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<front>
<journal-meta>
<journal-id journal-id-type="publisher-id">Front. Sports Act. Living</journal-id>
<journal-title>Frontiers in Sports and Active Living</journal-title>
<abbrev-journal-title abbrev-type="pubmed">Front. Sports Act. Living</abbrev-journal-title>
<issn pub-type="epub">2624-9367</issn>
<publisher>
<publisher-name>Frontiers Media S.A.</publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.3389/fspor.2024.1366451</article-id>
<article-categories>
<subj-group subj-group-type="heading">
<subject>Sports and Active Living</subject>
<subj-group>
<subject>Original Research</subject>
</subj-group>
</subj-group>
</article-categories>
<title-group>
<article-title>Cross-sectional association between frequency of vigorous physical activity and academic achievement in 214,808 adolescents</article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author" corresp="yes"><name><surname>Zhang</surname><given-names>Xiaohui</given-names></name>
<xref ref-type="aff" rid="aff1"><sup>1</sup></xref>
<xref ref-type="corresp" rid="cor1">&#x002A;</xref><uri xlink:href="https://loop.frontiersin.org/people/1795262/overview"/>
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</contrib>
<contrib contrib-type="author"><name><surname>Zhang</surname><given-names>Danqing</given-names></name>
<xref ref-type="aff" rid="aff2"><sup>2</sup></xref><uri xlink:href="https://loop.frontiersin.org/people/2210083/overview" />
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<contrib contrib-type="author"><name><surname>Yang</surname><given-names>Xingyi</given-names></name>
<xref ref-type="aff" rid="aff2"><sup>2</sup></xref><uri xlink:href="https://loop.frontiersin.org/people/2569012/overview" />
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<contrib contrib-type="author"><name><surname>Chen</surname><given-names>Sitong</given-names></name>
<xref ref-type="aff" rid="aff2"><sup>2</sup></xref><uri xlink:href="https://loop.frontiersin.org/people/1459985/overview" />
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<aff id="aff1"><label><sup>1</sup></label><institution>School of Physical Education, Suzhou University</institution>, <addr-line>Suzhou</addr-line>, <country>China</country></aff>
<aff id="aff2"><label><sup>2</sup></label><institution>Centre for Mental Health, Shenzhen University</institution>, <addr-line>Shenzhen</addr-line>, <country>China</country></aff>
<author-notes>
<fn fn-type="edited-by"><p><bold>Edited by:</bold> Alberto Ruiz-Ariza, University of Ja&#x00E9;n, Spain</p></fn>
<fn fn-type="edited-by"><p><bold>Reviewed by:</bold> Lobo Louie, The Education University of Hong Kong, Hong Kong SAR, China</p>
<p>Khadijeh Irandoust, Imam Khomeini International University, Iran</p></fn>
<corresp id="cor1"><label>&#x002A;</label><bold>Correspondence:</bold> Xiaohui Zhang <email>xhuityxy@163.com</email></corresp>
</author-notes>
<pub-date pub-type="epub"><day>08</day><month>08</month><year>2024</year></pub-date>
<pub-date pub-type="collection"><year>2024</year></pub-date>
<volume>6</volume><elocation-id>1366451</elocation-id>
<history>
<date date-type="received"><day>24</day><month>01</month><year>2024</year></date>
<date date-type="accepted"><day>25</day><month>07</month><year>2024</year></date>
</history>
<permissions>
<copyright-statement>&#x00A9; 2024 Zhang, Zhang, Yang and Chen.</copyright-statement>
<copyright-year>2024</copyright-year><copyright-holder>Zhang, Zhang, Yang and Chen</copyright-holder><license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0/">
<p>This is an open-access article distributed under the terms of the <ext-link ext-link-type="uri" xlink:href="http://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution License (CC BY)</ext-link>. The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.</p></license>
</permissions>
<abstract>
<sec><title>Background</title>
<p>This study explores the intricate link between vigorous physical activity and academic achievement in adolescents. By analyzing data from the Health Behaviour in School-aged Children (HBSC) survey, it seeks to understand how engaging in high-intensity physical activities influences academic achievement.</p>
</sec>
<sec><title>Methods</title>
<p>A comprehensive cross-sectional analysis was conducted on a vast dataset comprising 214,808 adolescents aged 11, 13, and 15 years. The frequency of vigorous physical activity was determined through self-reports, while academic achievement was assessed based on students&#x2019; self-perceptions, reflecting their understanding of teachers&#x2019; evaluations of their academic performance.</p>
</sec>
<sec><title>Results</title>
<p>Adolescents who reported engaging in vigorous physical activity daily were more likely to report higher academic achievement. This positive correlation was consistent across various demographic groups, including different age cohorts and both genders, indicating a universal benefit of regular vigorous physical activity on perceived academic success.</p>
</sec>
<sec><title>Conclusion</title>
<p>The findings of this study underscore the significant role that regular vigorous physical activity plays in the academic lives of adolescents. The correlation between daily vigorous physical activity and enhanced self-reported academic achievement suggests that encouraging high-intensity physical activities in schools could be a key strategy in boosting educational outcomes.</p>
</sec>
</abstract>
<kwd-group>
<kwd>physical activity</kwd>
<kwd>academic performance</kwd>
<kwd>exercise</kwd>
<kwd>high intensity</kwd>
<kwd>schoolchildren</kwd>
</kwd-group>
<counts>
<fig-count count="0"/>
<table-count count="4"/><equation-count count="0"/><ref-count count="58"/><page-count count="9"/><word-count count="0"/></counts><custom-meta-wrap><custom-meta><meta-name>section-at-acceptance</meta-name><meta-value>Physical Education and Pedagogy</meta-value></custom-meta></custom-meta-wrap>
</article-meta>
</front>
<body>
<sec id="s1" sec-type="intro"><label>1</label><title>Introduction</title>
<p>Regular physical activity is important for children&#x0027;s development, as it enhances healthy growth and health outcomes, such as improving physical fitness, bone health and healthy weight status, while controlling type 2 diabetes, high blood pressure and cardiovascular diseases (<xref ref-type="bibr" rid="B1">1</xref>). Furthermore, physical activity benefits cognitive processes and meta-cognition, fostering engagement, academic performance, learning, and eligibility for higher education (<xref ref-type="bibr" rid="B2">2</xref>&#x2013;<xref ref-type="bibr" rid="B5">5</xref>). Two studies revealed that children engaged in daily moderate physical activity during the nine years of compulsory education had higher eligibility for upper secondary school at ages 15&#x2013;16, compared to those participating in physical activity 1&#x2013;2 times weekly (<xref ref-type="bibr" rid="B3">3</xref>, <xref ref-type="bibr" rid="B4">4</xref>). In a prospective controlled intervention trial, daily physical activity sessions from ages seven to fifteen were linked to a seven percent increase in boys&#x2019; eligibility for upper secondary school, but no significant change was observed for girls (<xref ref-type="bibr" rid="B3">3</xref>). A study by Mavilidi et al. added new knowledge to the literature, by showing that just 5&#x2005;min of physical activity three times per week during maths lessons were associated with improved learning behaviour and performance (<xref ref-type="bibr" rid="B6">6</xref>).</p>
<p>Research indicates that physical activity positively influences the brain and nervous system, as evidenced that physically fit adolescents have larger brain volumes in key areas such as the hippocampus and basal ganglia, compared to their inactive peers (<xref ref-type="bibr" rid="B7">7</xref>). This is also replicated in older adults, where those who are physically active possess greater volumes of brain matter than less active ones (<xref ref-type="bibr" rid="B8">8</xref>). Electroencephalogram studies support these findings, revealing enhanced electro-cortical functions in physically active subjects (<xref ref-type="bibr" rid="B9">9</xref>). Animal research further indicates that physical activity promotes neural cell proliferation, survival, and long-term potentiation, essential for memory and learning (<xref ref-type="bibr" rid="B10">10</xref>). Additionally, physical activity increases catecholamines, which are crucial for learning (<xref ref-type="bibr" rid="B3">3</xref>, <xref ref-type="bibr" rid="B10">10</xref>). Studies in neuroscience have found links between physical activity and changes in brain structure/function, including alterations in grey matter thickness (<xref ref-type="bibr" rid="B11">11</xref>), white matter integrity (<xref ref-type="bibr" rid="B12">12</xref>), and enhancements in attention, memory, and executive function (<xref ref-type="bibr" rid="B13">13</xref>&#x2013;<xref ref-type="bibr" rid="B16">16</xref>). These neurobiological benefits are believed to contribute to improved academic achievement. Beyond these direct effects, physical activity also indirectly benefits cognition and academic performance through improvements in psychological factors such as self-esteem and mental health (<xref ref-type="bibr" rid="B3">3</xref>, <xref ref-type="bibr" rid="B4">4</xref>). A comprehensive meta-analysis has confirmed the broad impacts of physical activity on various cognitive aspects in children aged 4&#x2013;18, demonstrating its extensive influence on the learning process (<xref ref-type="bibr" rid="B17">17</xref>).</p>
<p>Researchers have extensively explored the relationship between physical activity and academic achievement in adolescents, focusing on its impact on both academic outcomes and cognitive functioning (<xref ref-type="bibr" rid="B18">18</xref>&#x2013;<xref ref-type="bibr" rid="B20">20</xref>). Meta-analyses have consistently demonstrated a positive link between physical activity and cognitive performance, revealing significant benefits of physical activity on academic performance in children and adolescents (<xref ref-type="bibr" rid="B21">21</xref>). However, earlier studies primarily assessed the effects in preadolescent children through a few intervention studies, often involving longitudinal physical activity programs (<xref ref-type="bibr" rid="B22">22</xref>). More recent research includes randomized controlled trials investigating both acute and chronic physical activity programs and their influence on cognitive functions (<xref ref-type="bibr" rid="B23">23</xref>&#x2013;<xref ref-type="bibr" rid="B25">25</xref>). While the association between physical activity, particularly moderate to vigorous, and academic achievement is generally positive (<xref ref-type="bibr" rid="B19">19</xref>, <xref ref-type="bibr" rid="B20">20</xref>), the findings are not always consistent. Some studies also reported non-significant associations (<xref ref-type="bibr" rid="B26">26</xref>, <xref ref-type="bibr" rid="B27">27</xref>) or even negative impacts (<xref ref-type="bibr" rid="B19">19</xref>, <xref ref-type="bibr" rid="B28">28</xref>) of physical activity on academic performance. It is noteworthy that most research concentrates on moderate to vigorous physical activity, with very few specifically examining the individual effects of vigorous physical activity on academic achievement in adolescents.</p>
<p>While the current body of literature offers valuable insights into the association between physical activity intensity and academic performance, a significant research gap is apparent, particularly when investigating the influence of vigorous physical activity on academic outcomes among adolescents within large sample size. Previous studies, including those exploring the effects of the High-Intensity Interval Training (HIIT) interventions, have shown promising enhancements in executive functions (<xref ref-type="bibr" rid="B29">29</xref>&#x2013;<xref ref-type="bibr" rid="B31">31</xref>). However, these interventions were often characterized by small sample size, and a lack of comprehensive exploration of academic outcomes. Tomporowski&#x0027;s 2003 meta-analysis focused on the impact of acute bouts of physical activity on information processing, revealing an inverted U-shaped relationship between acute physical activity and cognitive performance. This underscored the potential for decreased cognition with physical fatigue, aligning with the literature suggesting that over-arousal may be detrimental to performance. In contrast, certain researchers, including Chang, Labban, Gapin, and Etnier (2012), underscored the pivotal role of exercise intensity (<xref ref-type="bibr" rid="B32">32</xref>). They proposed that low-intensity PA immediately facilitates cognitive processes after exercise, while high-intensity work may induce fatigue and subsequent cognitive degradation, with potential improvement after physiological recovery. The present study, recognizing the interconnected nature of physical activity intensity as closely linked variable, cautiously presents results indicating a potential positive association between vigorous physical activity and increased math scores. This finding aligns with earlier literature reporting similar outcomes after high-intensity physical activity interventions, as demonstrated by Castelli et al. (<xref ref-type="bibr" rid="B33">33</xref>). However, a critical research gap exists in exploring vigorous physical activity and its specific impact on academic outcomes among adolescents within large and diverse sample sizes. Future research endeavours should prioritize addressing this gap to provide a more comprehensive understanding of how vigorous physical activity influences cognitive functions and academic performance. Such investigations are pivotal in guiding evidence-based strategies to optimize the positive impact of physical activity on academic outcomes among adolescents.</p>
<p>The aim of the present study therefore was to investigate the association between frequency of vigorous physical activity and academic achievement in large sample size of adolescents.</p>
</sec>
<sec id="s2" sec-type="methods"><label>2</label><title>Methods</title>
<sec id="s2a"><label>2.1</label><title>Study design</title>
<p>This study used a cross-sectional approach, utilising data from the 2014 Health Behaviour in School-aged Children (HBSC) study conducted in Europe and North America. The HBSC survey, a collaborative initiative led by the World Health Organisation (WHO), gathered information from adolescents with a four-year interval. Adolescents provided insights into their health status through self-administered questionnaires distributed within classroom settings. Individual countries had the flexibility to categorise their samples, ensuring diverse representation based on factors such as geographical location, ethnicity, and school type. The recruitment process employed a methodical multistage stratified cluster randomised sampling approach. The survey was conducted at various points during the academic year, aligning with national school schedules and resulting in samples reflecting mean ages of 11.5, 13.5, and 15.5 years. Participants completed the HBSC questionnaire under the supervision of teachers, school nurses, or other designated staff, following standardised instructions (<xref ref-type="bibr" rid="B34">34</xref>, <xref ref-type="bibr" rid="B35">35</xref>). Ultimately, this analysis included 214,808 adolescents aged 11, 13, and 15 years.</p>
</sec>
<sec id="s2b"><label>2.2</label><title>Measures</title>
<sec id="s2b1"><label>2.2.1</label><title>Frequency of vigorous physical activity</title>
<p>The frequency of vigorous physical activity was evaluated using the following question: &#x201C;During non-school hours, how often do you usually exercise in your free time so much that you get out of breath or sweat?&#x201D; Responses were: &#x201C;Every day&#x201D;, &#x201C;4&#x2013;6 times a week&#x201D;, &#x201C;2&#x2013;3 times a week&#x201D;, &#x201C;Once a week&#x201D;, &#x201C;Once a month&#x201D;, &#x201C;Less than once a month&#x201D;, &#x201C;Never&#x201D;. Prior studies have demonstrated that the frequency of vigorous physical activity item from the HBSC study has acceptable reliability, with ICC values ranging from 0.62 to 0.71, and fair validity, demonstrated by a correlation with maximal oxygen consumption (VO2max) of <italic>r</italic>&#x2009;&#x003D;&#x2009;0.33, in students from various countries (<xref ref-type="bibr" rid="B36">36</xref>&#x2013;<xref ref-type="bibr" rid="B39">39</xref>).</p>
</sec>
<sec id="s2b2"><label>2.2.2</label><title>Academic performance</title>
<p>Academic performance was gauged with a single question: &#x201C;In your opinion, what does your class teacher(s) think about your school performance to your classmates?&#x201D; Response options included: &#x201C;very good&#x201D;, &#x201C;good&#x201D;, &#x201C;average&#x201D;, and &#x201C;below average&#x201D;. Self-reported academic performance has been confirmed as an acceptable and valid measure in the previous research (<xref ref-type="bibr" rid="B40">40</xref>).</p>
</sec>
<sec id="s2b3"><label>2.2.3</label><title>Covariates</title>
<p>Demographic information, including age, gender, well off, self-rated health, screen time (i.e., watching TV, playing game, using computer, breakfast, soft drinks, sweets, vegetables, fruits and alcopops consumption as well as smoking were collected from study participants using a self-reported questionnaire.</p>
</sec>
</sec>
<sec id="s2c"><label>2.3</label><title>Statistical analysis</title>
<p>All analyses were conducted using IBM SPSS version 28.0. The descriptive characteristics of participants were reported as percentage (&#x0025;). Ordered logistic regression models were employed to examine the association between vigorous physical activity and weight status across the overall sample, as well as separately for boys and girls. Participating in vigorous physical activity every day was set as the reference group. All models were adjusted for age, gender, well off, self-rated health, screen time, eating habits, alcopops consumption, and smoking (except for sex in the overall sample). The statistical significance level was set as <italic>p</italic>&#x2009;&#x003C;&#x2009;0.05 in this study.</p>
</sec>
</sec>
<sec id="s3" sec-type="results"><label>3</label><title>Results</title>
<p>A pooled sample of 214,808 adolescent (boy: 49.2&#x0025;) with aged 11, 13 and 15 years old were extracted from the HBSC survey. The prevalence of good and very good academic achievement was 43.2&#x0025; and 24.0&#x0025;. Results indicate the proportion of study participants who engaged in frequency of vigorous physical activity at different levels. 19.2&#x0025;, 24.4&#x0025;, 29.2&#x0025;, 13.1&#x0025;, 3.8&#x0025; and 4.7&#x0025; of study participants reported engaging in frequency of vigorous physical activity every day, 4&#x2013;6 times a week, 2&#x2013;3 times a week, once a week, once a month and less than once a month, respectively. More details can be found in <xref ref-type="table" rid="T1">Table&#x00A0;1</xref>.</p>
<table-wrap id="T1" position="float"><label>Table 1</label>
<caption><p>Sample characteristics of this study.</p></caption>
<table frame="hsides" rules="groups">
<colgroup>
<col align="left"/>
<col align="center"/>
<col align="left"/>
<col align="center"/>
</colgroup>
<thead>
<tr>
<th valign="top" align="left">Variables</th>
<th valign="top" align="center">Proportion</th>
<th valign="top" align="center">Variables</th>
<th valign="top" align="center">Proportion</th>
</tr>
</thead>
<tbody>
<tr>
<td valign="top" align="left" colspan="2">Age</td>
<td valign="top" align="left" colspan="2">Smoking</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;11 years old</td>
<td valign="top" align="center">32.2&#x0025;</td>
<td valign="top" align="left">&#x2003;Every day</td>
<td valign="top" align="center">3.5&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;13 years old</td>
<td valign="top" align="center">34.6&#x0025;</td>
<td valign="top" align="left">&#x2003;Once a week</td>
<td valign="top" align="center">1.8&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;15 years old</td>
<td valign="top" align="center">33.2&#x0025;</td>
<td valign="top" align="left">&#x2003;Less than once a week</td>
<td valign="top" align="center">2.7&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left" colspan="2">Gender</td>
<td valign="top" align="left">&#x2003;Don&#x0027;t</td>
<td valign="top" align="center">92.0&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Boy</td>
<td valign="top" align="center">49.2&#x0025;</td>
<td valign="top" align="left" colspan="2">Alcopops</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Girl</td>
<td valign="top" align="center">50.8&#x0025;</td>
<td valign="top" align="left">&#x2003;Every day</td>
<td valign="top" align="center">1.0&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left" colspan="2">Well off</td>
<td valign="top" align="left">&#x2003;Every week</td>
<td valign="top" align="center">1.4&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Very well off</td>
<td valign="top" align="center">19.5&#x0025;</td>
<td valign="top" align="left">&#x2003;Every month</td>
<td valign="top" align="center">3.9&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Quite well off</td>
<td valign="top" align="center">34.4&#x0025;</td>
<td valign="top" align="left">&#x2003;Rarely</td>
<td valign="top" align="center">12.6&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Average</td>
<td valign="top" align="center">39.0&#x0025;</td>
<td valign="top" align="left">&#x2003;Never</td>
<td valign="top" align="center">81.0&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Not very well off</td>
<td valign="top" align="center">5.7&#x0025;</td>
<td valign="top" align="left" colspan="2">TV (weekend)</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Not at all well off</td>
<td valign="top" align="center">1.4&#x0025;</td>
<td valign="top" align="left">&#x2003;None at all</td>
<td valign="top" align="center">3.7&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left" colspan="2">TV (weekdays)</td>
<td valign="top" align="left">&#x2003;Half an hour a day</td>
<td valign="top" align="center">7.4&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;None at all</td>
<td valign="top" align="center">5.5&#x0025;</td>
<td valign="top" align="left">&#x2003;1&#x2005;h a day</td>
<td valign="top" align="center">13.1&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Half an hour a day</td>
<td valign="top" align="center">14.5&#x0025;</td>
<td valign="top" align="left">&#x2003;2&#x2005;h a day</td>
<td valign="top" align="center">19.7&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;1&#x2005;h a day</td>
<td valign="top" align="center">21.6&#x0025;</td>
<td valign="top" align="left">&#x2003;3&#x2005;h a day</td>
<td valign="top" align="center">18.0&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;2&#x2005;h a day</td>
<td valign="top" align="center">23.5&#x0025;</td>
<td valign="top" align="left">&#x2003;4&#x2005;h a day</td>
<td valign="top" align="center">14.0&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;3&#x2005;h a day</td>
<td valign="top" align="center">15.6&#x0025;</td>
<td valign="top" align="left">&#x2003;5&#x2005;h a day</td>
<td valign="top" align="center">9.2&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;4&#x2005;h a day</td>
<td valign="top" align="center">8.6&#x0025;</td>
<td valign="top" align="left">&#x2003;6&#x2005;h a day</td>
<td valign="top" align="center">5.4&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;5&#x2005;h a day</td>
<td valign="top" align="center">4.6&#x0025;</td>
<td valign="top" align="left">&#x2003;7&#x2005;h or more a day</td>
<td valign="top" align="center">9.5&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;6&#x2005;h a day</td>
<td valign="top" align="center">1.9&#x0025;</td>
<td valign="top" align="left" colspan="2">Play game (weekend)</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;7&#x2005;h or more a day</td>
<td valign="top" align="center">4.2&#x0025;</td>
<td valign="top" align="left">&#x2003;None at all</td>
<td valign="top" align="center">13.7&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left" colspan="2">Play game (weekdays)</td>
<td valign="top" align="left">&#x2003;Half an hour a day</td>
<td valign="top" align="center">14.5&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;None at all</td>
<td valign="top" align="center">19.0&#x0025;</td>
<td valign="top" align="left">&#x2003;1&#x2005;h a day</td>
<td valign="top" align="center">15.4&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Half an hour a day</td>
<td valign="top" align="center">20.2&#x0025;</td>
<td valign="top" align="left">&#x2003;2&#x2005;h a day</td>
<td valign="top" align="center">15.3&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;1&#x2005;h a day</td>
<td valign="top" align="center">19.2&#x0025;</td>
<td valign="top" align="left">&#x2003;3&#x2005;h a day</td>
<td valign="top" align="center">11.7&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;2&#x2005;h a day</td>
<td valign="top" align="center">15.6&#x0025;</td>
<td valign="top" align="left">&#x2003;4&#x2005;h a day</td>
<td valign="top" align="center">9.0&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;3&#x2005;h a day</td>
<td valign="top" align="center">9.7&#x0025;</td>
<td valign="top" align="left">&#x2003;5&#x2005;h a day</td>
<td valign="top" align="center">6.4&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;4&#x2005;h a day</td>
<td valign="top" align="center">5.9&#x0025;</td>
<td valign="top" align="left">&#x2003;6&#x2005;h a day</td>
<td valign="top" align="center">4.3&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;5&#x2005;h a day</td>
<td valign="top" align="center">3.7&#x0025;</td>
<td valign="top" align="left">&#x2003;7&#x2005;h or more a day</td>
<td valign="top" align="center">9.7&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;6&#x2005;h a day</td>
<td valign="top" align="center">1.9&#x0025;</td>
<td valign="top" align="left" colspan="2">Computer (weekend)</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;7&#x2005;h or more a day</td>
<td valign="top" align="center">4.8&#x0025;</td>
<td valign="top" align="left">&#x2003;None at all</td>
<td valign="top" align="center">9.6&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left" colspan="2">Computer (weekdays)</td>
<td valign="top" align="left">&#x2003;Half an hour a day</td>
<td valign="top" align="center">14.2&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;None at all</td>
<td valign="top" align="center">10.1&#x0025;</td>
<td valign="top" align="left">&#x2003;1&#x2005;h a day</td>
<td valign="top" align="center">16.3&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Half an hour a day</td>
<td valign="top" align="center">19.2&#x0025;</td>
<td valign="top" align="left">&#x2003;2&#x2005;h a day</td>
<td valign="top" align="center">15.7&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;1&#x2005;h a day</td>
<td valign="top" align="center">20.4&#x0025;</td>
<td valign="top" align="left">&#x2003;3&#x2005;h a day</td>
<td valign="top" align="center">12.1&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;2&#x2005;h a day</td>
<td valign="top" align="center">16.8&#x0025;</td>
<td valign="top" align="left">&#x2003;4&#x2005;h a day</td>
<td valign="top" align="center">9.1&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;3&#x2005;h a day</td>
<td valign="top" align="center">11.1&#x0025;</td>
<td valign="top" align="left">&#x2003;5&#x2005;h a day</td>
<td valign="top" align="center">6.7&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;4&#x2005;h a day</td>
<td valign="top" align="center">7.1&#x0025;</td>
<td valign="top" align="left">&#x2003;6&#x2005;h a day</td>
<td valign="top" align="center">4.7&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;5&#x2005;h a day</td>
<td valign="top" align="center">4.9&#x0025;</td>
<td valign="top" align="left">&#x2003;7&#x2005;h or more a day</td>
<td valign="top" align="center">11.6&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;6&#x2005;h a day</td>
<td valign="top" align="center">2.8&#x0025;</td>
<td valign="top" align="left" colspan="2">Fruits</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;7&#x2005;h or more a day</td>
<td valign="top" align="center">7.6&#x0025;</td>
<td valign="top" align="left">&#x2003;Never</td>
<td valign="top" align="center">3.0&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left" colspan="2">Breakfast weekdays</td>
<td valign="top" align="left">&#x2003;Less than once a week</td>
<td valign="top" align="center">6.0&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Never</td>
<td valign="top" align="center">15.7&#x0025;</td>
<td valign="top" align="left">&#x2003;Once a week</td>
<td valign="top" align="center">9.5&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;One day</td>
<td valign="top" align="center">4.0&#x0025;</td>
<td valign="top" align="left">&#x2003;2&#x2013;4 days a week</td>
<td valign="top" align="center">28.2&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Two days</td>
<td valign="top" align="center">4.9&#x0025;</td>
<td valign="top" align="left">&#x2003;5&#x2013;6 days a week</td>
<td valign="top" align="center">15.4&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Three days</td>
<td valign="top" align="center">6.6&#x0025;</td>
<td valign="top" align="left">&#x2003;Once daily</td>
<td valign="top" align="center">17.8&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Four days</td>
<td valign="top" align="center">5.5&#x0025;</td>
<td valign="top" align="left">&#x2003;More than once daily</td>
<td valign="top" align="center">20.2&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Five days</td>
<td valign="top" align="center">63.3&#x0025;</td>
<td valign="top" align="left" colspan="2">Sweets</td>
</tr>
<tr>
<td valign="top" align="left" colspan="2">Breakfast weekend</td>
<td valign="top" align="left">&#x2003;Never</td>
<td valign="top" align="center">4.1&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Never</td>
<td valign="top" align="center">7.1&#x0025;</td>
<td valign="top" align="left">&#x2003;Less than once a week</td>
<td valign="top" align="center">12.1&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;One day</td>
<td valign="top" align="center">13.3&#x0025;</td>
<td valign="top" align="left">&#x2003;Once a week</td>
<td valign="top" align="center">19.2&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Both days</td>
<td valign="top" align="center">79.5&#x0025;</td>
<td valign="top" align="left">&#x2003;2&#x2013;4 days a week</td>
<td valign="top" align="center">28.2&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left" colspan="2">Vegetables</td>
<td valign="top" align="left">&#x2003;5&#x2013;6 days a week</td>
<td valign="top" align="center">12.8&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Never</td>
<td valign="top" align="center">4.5&#x0025;</td>
<td valign="top" align="left">&#x2003;Once daily</td>
<td valign="top" align="center">12.0&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Less than once a week</td>
<td valign="top" align="center">5.8&#x0025;</td>
<td valign="top" align="left">&#x2003;More than once daily</td>
<td valign="top" align="center">11.6&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Once a week</td>
<td valign="top" align="center">9.8&#x0025;</td>
<td valign="top" align="left" colspan="2">Soft drinks</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;2&#x2013;4 days a week</td>
<td valign="top" align="center">25.3&#x0025;</td>
<td valign="top" align="left">&#x2003;Never</td>
<td valign="top" align="center">11.1&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;5&#x2013;6 days a week</td>
<td valign="top" align="center">19.1&#x0025;</td>
<td valign="top" align="left">&#x2003;Less than once a week</td>
<td valign="top" align="center">22.0&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Once daily</td>
<td valign="top" align="center">19.0&#x0025;</td>
<td valign="top" align="left">&#x2003;Once a week</td>
<td valign="top" align="center">18.8&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;More than once daily</td>
<td valign="top" align="center">16.6&#x0025;</td>
<td valign="top" align="left">&#x2003;2&#x2013;4 days a week</td>
<td valign="top" align="center">21.7&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left" colspan="2">Self-rated Health</td>
<td valign="top" align="left">&#x2003;5&#x2013;6 days a week</td>
<td valign="top" align="center">8.7&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Excellent</td>
<td valign="top" align="center">36.4&#x0025;</td>
<td valign="top" align="left">&#x2003;Once daily</td>
<td valign="top" align="center">7.4&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Good</td>
<td valign="top" align="center">50.2&#x0025;</td>
<td valign="top" align="left">&#x2003;More than once daily</td>
<td valign="top" align="center">10.4&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Fair</td>
<td valign="top" align="center">11.8&#x0025;</td>
<td valign="top" align="left" colspan="2">Frequency of vigorous physical activity</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Poor</td>
<td valign="top" align="center">1.6&#x0025;</td>
<td valign="top" align="left">&#x2003;Every day</td>
<td valign="top" align="center">19.2&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left" colspan="2">Academic achievement</td>
<td valign="top" align="left">&#x2003;4&#x2013;6 times a week</td>
<td valign="top" align="center">24.4&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Very good</td>
<td valign="top" align="center">24.0&#x0025;</td>
<td valign="top" align="left">&#x2003;2&#x2013;3 times a week</td>
<td valign="top" align="center">29.2&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Good</td>
<td valign="top" align="center">43.2&#x0025;</td>
<td valign="top" align="left">&#x2003;Once a week</td>
<td valign="top" align="center">13.1&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Average</td>
<td valign="top" align="center">28.1&#x0025;</td>
<td valign="top" align="left">&#x2003;Once a month</td>
<td valign="top" align="center">3.8&#x0025;</td>
</tr>
<tr>
<td valign="top" align="left">&#x2003;Below average</td>
<td valign="top" align="center">4.7&#x0025;</td>
<td valign="top" align="left">&#x2003;Less than once a month</td>
<td valign="top" align="center">4.7&#x0025;</td>
</tr>
</tbody>
</table>
</table-wrap>
<p><xref ref-type="table" rid="T2">Table&#x00A0;2</xref> presents the association between the frequency of vigorous physical activity and academic achievement. Results show that engaging in vigorous physical activity 4&#x2013;6 times a week, 2&#x2013;3 times a week, or once a week were associated with higher likelihood of lower academic achievement compared to the reference group, with OR of 1.03 (95&#x0025; CI: 1.01&#x2013;1.06), 1.03 (95&#x0025; CI: 1.00&#x2013;1.06), and 1.04 (95&#x0025; CI: 1.01&#x2013;1.08) respectively. Engaging in frequency of vigorous physical activity once a month showed OR of 0.96 (95&#x0025; CI: 0.92&#x2013;1.01), while engaging less than once a month or never showed OR of 1.09 (95&#x0025; CI: 1.05&#x2013;1.14) and 1.07 (95&#x0025; CI: 1.03&#x2013;1.12) respectively, indicating a slightly higher likelihood of lower academic achievement compared to the reference group.</p>
<table-wrap id="T2" position="float"><label>Table 2</label>
<caption><p>Association between the frequency of vigorous physical activity and academic achievement.</p></caption>
<table frame="hsides" rules="groups">
<colgroup>
<col align="left"/>
<col align="center"/>
<col align="center"/>
</colgroup>
<thead>
<tr>
<th valign="top" align="left">Frequency of vigorous physical activity</th>
<th valign="top" align="center" colspan="2">Academic achievement</th>
</tr>
<tr>
<th valign="top" align="center"/>
<th valign="top" align="center">OR</th>
<th valign="top" align="center">95&#x0025; CI</th>
</tr>
</thead>
<tbody>
<tr>
<td valign="top" align="left">Every day</td>
<td valign="top" align="center" colspan="2">Reference group</td>
</tr>
<tr>
<td valign="top" align="left">4&#x2013;6 times a week</td>
<td valign="top" align="center"><bold>1</bold><bold>.</bold><bold>03</bold></td>
<td valign="top" align="center"><bold>1.01&#x2013;1.06</bold></td>
</tr>
<tr>
<td valign="top" align="left">2&#x2013;3 times a week</td>
<td valign="top" align="center"><bold>1</bold>.<bold>03</bold></td>
<td valign="top" align="center"><bold>1.00&#x2013;1.06</bold></td>
</tr>
<tr>
<td valign="top" align="left">Once a week</td>
<td valign="top" align="center"><bold>1</bold>.<bold>04</bold></td>
<td valign="top" align="center"><bold>1.01&#x2013;1.08</bold></td>
</tr>
<tr>
<td valign="top" align="left">Once a month</td>
<td valign="top" align="center">0.96</td>
<td valign="top" align="center">0.92&#x2013;1.01</td>
</tr>
<tr>
<td valign="top" align="left">Less than once a month</td>
<td valign="top" align="center"><bold>1</bold>.<bold>09</bold></td>
<td valign="top" align="center"><bold>1.05&#x2013;1.14</bold></td>
</tr>
<tr>
<td valign="top" align="left">Never</td>
<td valign="top" align="center"><bold>1</bold>.<bold>07</bold></td>
<td valign="top" align="center"><bold>1.03&#x2013;1.12</bold></td>
</tr>
</tbody>
</table>
<table-wrap-foot>
<fn id="table-fn4"><p>OR, Odd Ratio; CI, Confidence Interval. Bold values: <italic>p</italic>&#x2009;&#x003C;&#x2009;0.05.</p></fn>
<fn id="table-fn1"><p>Model controlled for all covariates (age, gender, well off, self-rated health, screen time, eating habits, alcopops consumption, and smoking).</p></fn>
</table-wrap-foot>
</table-wrap>
<p><xref ref-type="table" rid="T3">Table&#x00A0;3</xref> illustrates the association between the frequency of vigorous physical activity and academic achievement in boys. Results indicate that there was no in general significant association between engaging in vigorous physical activity 4&#x2013;6 times a week, 2&#x2013;3 times a week, or once a week and academic achievement, as evidenced by OR of 1.02 (95&#x0025; CI: 0.99&#x2013;1.06), 1.00 (95&#x0025; CI: 0.97&#x2013;1.03), and 0.98 (95&#x0025; CI: 0.93&#x2013;1.02), respectively. Similarly, engaging in vigorous physical activity once a month, less than once a month, or never did not have significant associations with academic achievement, as indicated by OR of 0.93 (95&#x0025; CI: 0.86&#x2013;1.00), 1.02 (95&#x0025; CI: 0.95&#x2013;1.10), and 0.98 (95&#x0025; CI: 0.92&#x2013;1.05) respectively.</p>
<table-wrap id="T3" position="float"><label>Table 3</label>
<caption><p>Association between the frequency of vigorous physical activity and academic achievement in boys.</p></caption>
<table frame="hsides" rules="groups">
<colgroup>
<col align="left"/>
<col align="center"/>
<col align="center"/>
</colgroup>
<thead>
<tr>
<th valign="top" align="left">Frequency of vigorous physical activity</th>
<th valign="top" align="center" colspan="2">Academic achievement</th>
</tr>
<tr>
<th valign="top" align="center"/>
<th valign="top" align="center">OR</th>
<th valign="top" align="center">95&#x0025; CI</th>
</tr>
</thead>
<tbody>
<tr>
<td valign="top" align="left">Every day</td>
<td valign="top" align="center" colspan="2">Reference</td>
</tr>
<tr>
<td valign="top" align="left">4&#x2013;6 times a week</td>
<td valign="top" align="center">1.02</td>
<td valign="top" align="center">0.99&#x2013;1.06</td>
</tr>
<tr>
<td valign="top" align="left">2&#x2013;3 times a week</td>
<td valign="top" align="center">1.00</td>
<td valign="top" align="center">0.97&#x2013;1.03</td>
</tr>
<tr>
<td valign="top" align="left">Once a week</td>
<td valign="top" align="center">0.98</td>
<td valign="top" align="center">0.93&#x2013;1.02</td>
</tr>
<tr>
<td valign="top" align="left">Once a month</td>
<td valign="top" align="center">0.93</td>
<td valign="top" align="center">0.86&#x2013;1.00</td>
</tr>
<tr>
<td valign="top" align="left">Less than once a month</td>
<td valign="top" align="center">1.02</td>
<td valign="top" align="center">0.95&#x2013;1.10</td>
</tr>
<tr>
<td valign="top" align="left">Never</td>
<td valign="top" align="center">0.98</td>
<td valign="top" align="center">0.92&#x2013;1.05</td>
</tr>
</tbody>
</table>
<table-wrap-foot>
<fn id="table-fn5"><p>OR, Odd Ratio; CI, Confidence Interval.</p></fn>
<fn id="table-fn2"><p>Model controlled for all covariates (age, gender, well off, self-rated health, screen time, eating habits, alcopops consumption, and smoking).</p></fn>
</table-wrap-foot>
</table-wrap>
<p><xref ref-type="table" rid="T4">Table&#x00A0;4</xref> presents the relationship between the frequency of vigorous physical activity and academic achievement in girls. The results indicate a significant association between decreasing frequencies of vigorous physical activity and higher odds of lower academic achievement. Engaging in vigorous physical activity 4&#x2013;6 times a week, 2&#x2013;3 times a week, and once a week were associated with progressively higher odds of lower academic achievement, with OR of 1.06 (95&#x0025; CI: 1.02&#x2013;1.10), 1.08 (95&#x0025; CI: 1.04&#x2013;1.12), and 1.12 (95&#x0025; CI: 1.08&#x2013;1.17) respectively. Moreover, engaging in vigorous physical activity once a month, less than once a month, or never is also associated with higher probability of lower academic achievement, as indicated by OR of 1.02 (95&#x0025; CI: 0.96&#x2013;1.08), 1.18 (95&#x0025; CI: 1.11&#x2013;1.25), and 1.18 (95&#x0025; CI: 1.11&#x2013;1.24) respectively.</p>
<table-wrap id="T4" position="float"><label>Table 4</label>
<caption><p>Association between the frequency of vigorous physical activity and academic achievement in girls.</p></caption>
<table frame="hsides" rules="groups">
<colgroup>
<col align="left"/>
<col align="center"/>
<col align="center"/>
</colgroup>
<thead>
<tr>
<th valign="top" align="left">Frequency of vigorous physical activity</th>
<th valign="top" align="center" colspan="2">Academic achievement</th>
</tr>
<tr>
<th valign="top" align="center"/>
<th valign="top" align="center">OR</th>
<th valign="top" align="center">95&#x0025; CI</th>
</tr>
</thead>
<tbody>
<tr>
<td valign="top" align="left">Every day</td>
<td valign="top" align="center" colspan="2">Reference group</td>
</tr>
<tr>
<td valign="top" align="left">4&#x2013;6 times a week</td>
<td valign="top" align="center"><bold>1</bold><bold>.</bold><bold>06</bold></td>
<td valign="top" align="center"><bold>1.02&#x2013;1.10</bold></td>
</tr>
<tr>
<td valign="top" align="left">2&#x2013;3 times a week</td>
<td valign="top" align="center"><bold>1</bold>.<bold>08</bold></td>
<td valign="top" align="center"><bold>1.04&#x2013;1.12</bold></td>
</tr>
<tr>
<td valign="top" align="left">Once a week</td>
<td valign="top" align="center"><bold>1</bold>.<bold>12</bold></td>
<td valign="top" align="center"><bold>1.08&#x2013;1.17</bold></td>
</tr>
<tr>
<td valign="top" align="left">Once a month</td>
<td valign="top" align="center">1.02</td>
<td valign="top" align="center">0.96&#x2013;1.08</td>
</tr>
<tr>
<td valign="top" align="left">Less than once a month</td>
<td valign="top" align="center"><bold>1</bold>.<bold>18</bold></td>
<td valign="top" align="center"><bold>1.11&#x2013;1.25</bold></td>
</tr>
<tr>
<td valign="top" align="left">Never</td>
<td valign="top" align="center"><bold>1</bold>.<bold>18</bold></td>
<td valign="top" align="center"><bold>1.11&#x2013;1.24</bold></td>
</tr>
</tbody>
</table>
<table-wrap-foot>
<fn id="table-fn6"><p>OR, Odd Ratio; CI, Confidence Interval. Bold values: <italic>p</italic>&#x2009;&#x003C;&#x2009;0.05.</p></fn>
<fn id="table-fn3"><p>Model controlled for age, gender, well off, self-rated health, screen time, eating habits, alcopops consumption, and smoking.</p></fn>
</table-wrap-foot>
</table-wrap>
</sec>
<sec id="s4" sec-type="discussion"><label>4</label><title>Discussion</title>
<p>The current study presents the results on association between frequency of vigorous physical activity and academic achievement, aligning with previous findings while also highlighting some differences and consistencies. Consistent with prior research, the current study found a potential association between more vigorous physical activity and better academic achievement. This aligns with a growing body of literature that has demonstrated the positive effects of regular physical activity on cognitive function, attention, and academic performance. The current study&#x0027;s results indicate a potential association between vigorous physical activity and academic achievement (<xref ref-type="bibr" rid="B41">41</xref>, <xref ref-type="bibr" rid="B42">42</xref>), especially in girls but not in boys. This finding presents a notable difference from the general trend observed in previous research, which has often shown positive associations between physical activity and academic achievement across genders (<xref ref-type="bibr" rid="B43">43</xref>, <xref ref-type="bibr" rid="B44">44</xref>).</p>
<sec id="s4a"><label>4.1</label><title>Association between vigorous physical activity and academic achievement</title>
<p>The significant associations observed in the current study are consistent with a substantial body of evidence indicating that physical activity is beneficial for cognitive function and academic performance (<xref ref-type="bibr" rid="B17">17</xref>, <xref ref-type="bibr" rid="B45">45</xref>). Research has suggested that regular physical activity can lead to improvements in attention, memory, and information processing, all of which are fundamental to academic success (<xref ref-type="bibr" rid="B46">46</xref>, <xref ref-type="bibr" rid="B47">47</xref>). These findings underscore the potential role of physical activity in enhancing overall academic achievement. The results also underscore the importance of considering potential confounding variables, which is consistent with previous findings (<xref ref-type="bibr" rid="B20">20</xref>, <xref ref-type="bibr" rid="B48">48</xref>). As noted in the prior studies, it is essential to recognize that adolescents who engage in vigorous physical activity more frequently may have less time available for academic studying, potentially impacting their academic performance. This highlights the need to account for factors such as time allocation for studying, socioeconomic status, access to resources, nutrition and overall lifestyle habits, which have been consistently identified as potential moderators in the association between physical activity and academic achievement. The significant impact of breakfast consumption on nutritional benefits has been thoroughly demonstrated across various age groups, particularly among individuals engaged in mental and physical activities (<xref ref-type="bibr" rid="B49">49</xref>). Moreover, this study&#x0027;s findings prompt the need for further research to better understand the mechanisms underlying the association between vigorous physical activity and academic achievement (<xref ref-type="bibr" rid="B48">48</xref>, <xref ref-type="bibr" rid="B50">50</xref>). This aligns with previous calls for more in-depth exploration into how different types of physical activity might impact cognitive function, attention, and overall academic performance. Understanding the specific mechanisms through which physical activity influences cognitive function and academic achievement is crucial for developing targeted interventions and strategies to support students&#x2019; overall well-being and academic success.</p>
<p>Engaging in vigorous physical activity has been demonstrated to exert profound effects on various aspects of cognitive functioning, particularly executive functions that can benefit academic success. The enhancement of working memory and cognitive flexibility, key components in problem-solving and comprehension tasks, underscores the significance of vigorous physical activity in fostering cognitive development during adolescence (<xref ref-type="bibr" rid="B51">51</xref>). The puberty period, characterized by dynamic neural changes, is particularly sensitive to the positive impact of vigorous physical activity. Research indicates that vigorous physical activity promotes neurogenesis, the generation of new neurons, and angiogenesis, the formation of new blood vessels. These neurobiological processes contribute to cognitive and mental health improvements, providing a solid foundation for effective learning. Moreover, vigorous physical activity plays a pivotal role in improving cardiorespiratory fitness (CRF), a factor intricately linked to cognitive performance. The positive association between CRF and cognitive abilities highlights the holistic benefits of vigorous physical activity on both physical and mental well-being. Adolescents engaging in regular vigorous physical activity not only experience improvements in their cardiovascular health but also enjoy enhanced cognitive functioning, ultimately supporting their academic endeavors. Additionally, vigorous physical activity exerts a positive impact on mental health, contributing to improved concentration and heightened engagement in academic activities. The psychological benefits of vigorous physical activity extend beyond the physiological realm, fostering a conducive environment for effective learning. This dual influence on cognitive and mental health aspects reinforces the notion that vigorous physical activity serves as a comprehensive strategy for promoting overall well-being in the academic context. Furthermore, the immediate cognitive benefits observed after vigorous physical activity, such as enhanced math test performance shortly following activity, underscore the direct and acute positive effects of vigorous physical activity on learning. The rapid improvements in cognitive functions provide valuable insights into the potential for incorporating vigorous physical activity as a proactive approach to enhance academic achievement.</p>
</sec>
<sec id="s4b"><label>4.2</label><title>Association between vigorous physical activity and academic achievement by gender</title>
<p>The current study finding suggests that a potential association between frequent vigorous physical activity and academic achievement particularly in girls. Previous research has consistently demonstrated the positive impact of physical activity on cognitive function, attention, and academic achievement across genders. However, the gender-specific nature of the association observed in the current study highlights the need to delve deeper into potential gender-related differences in how physical activity influences academic outcomes (<xref ref-type="bibr" rid="B43">43</xref>, <xref ref-type="bibr" rid="B44">44</xref>). The positive association observed in girls aligns with a growing body of evidence that links physical activity to improved cognitive function and academic performance. Regular physical activity has been associated with enhanced attention, memory, and information processing, all of which are critical for academic success. The current study&#x0027;s findings add to the body of evidence, suggesting that vigorous physical activity may have a particularly beneficial impact on academic achievement in girls. This discrepancy underscores the need to further investigate potential gender-specific factors that may underlie the differing effects of physical activity on academic performance in boys and girls. Understanding why the association between vigorous physical activity and academic achievement appears to be specific to girls is crucial. Further research is needed to explore potential underlying mechanisms that may contribute to this gender-specific difference (<xref ref-type="bibr" rid="B52">52</xref>, <xref ref-type="bibr" rid="B53">53</xref>). Factors such as hormonal influences, social dynamics, and differences in the ways boys and girls engage in physical activity could all play a role in shaping this relationship (<xref ref-type="bibr" rid="B54">54</xref>). The current study&#x0027;s findings emphasize the importance of considering potential confounding variables, such as time allocation for studying, socioeconomic status, access to resources, and overall lifestyle habits (<xref ref-type="bibr" rid="B20">20</xref>, <xref ref-type="bibr" rid="B48">48</xref>). These factors may interact with physical activity in complex ways, influencing academic achievement differently in boys and girls.</p>
<p>The observed gender-specific effects in the context of physical activity and academic achievement may be attributed to the distinct patterns of vigorous physical activity across girls and boys, potentially exerting a more pronounced impact on cognitive function and academic success compared to the patterns observed in boys (<xref ref-type="bibr" rid="B52">52</xref>, <xref ref-type="bibr" rid="B54">54</xref>). This distinction arises from variations in activity types, intensity, and duration, which could lead to differing cognitive and academic outcomes (<xref ref-type="bibr" rid="B1">1</xref>, <xref ref-type="bibr" rid="B55">55</xref>). The study&#x0027;s findings in turn shed light on the potential influence of gender-specific physical activity patterns on cognitive and academic development. Moreover, the results of the study may be influenced by how boys and girls allocate their time between physical activity and academic pursuits (<xref ref-type="bibr" rid="B48">48</xref>). It is plausible that the time devoted to vigorous physical activity impacts academic engagement and study time differently for boys and girls, ultimately shaping their academic achievement in different ways. This suggests that the relationship between physical activity and academic success is mediated by gender-specific time management and engagement in academic activities. Understanding these differences in time allocation and activity engagement is crucial in comprehending the nuanced relationship between physical activity and academic performance across genders. Furthermore, the unique developmental changes associated with puberty in boys and girls may interact with physical activity in distinct ways, potentially influencing cognitive function and academic performance differently across genders (<xref ref-type="bibr" rid="B51">51</xref>). The onset of puberty brings about hormonal fluctuations and neurological developments that differ between boys and girls. These biological and developmental factors could contribute to the observed gender-specific effects, emphasizing the need to consider the impact of puberty-related changes on the relationship between physical activity and academic achievement (<xref ref-type="bibr" rid="B56">56</xref>, <xref ref-type="bibr" rid="B57">57</xref>). In essence, the varying impact of physical activity on cognitive function and academic achievement between boys and girls underscores the importance of considering gender-specific activity patterns, time allocation, and developmental changes. These factors play a pivotal role in shaping the relationship between physical activity and academic success.</p>
</sec>
<sec id="s4c"><label>4.3</label><title>Strength and limitations</title>
<p>This study offers valuable insights into the association between vigorous physical activity and academic achievement in a substantial sample of adolescents. This study used data from 214,808 adolescents, offering a robust and representative sample for analysis. Also, this study incorporates various confounding variables, such as socioeconomic status, parental education, and school environment, into the statistical analyses, enhancing the internal validity of the association between vigorous physical activity and academic achievement. However, it is important to acknowledge the study limitations. The study findings primarily derive from data collected from adolescents in Europe and North America. There might be biases in the research findings due to regional and cultural differences. Cross-sectional design, this study used, limits the establishment of causal relationships between vigorous physical activity and academic achievement, as it only captures associations at a single point in time. Longitudinal studies are essential to explore the enduring effects of vigorous physical activity on academic performance. Self-reported variables like academic achievement and vigorous physical activity may introduce recall or reporting biases, potentially leading to overestimation or underestimation. Moreover, Biddle et al. (<xref ref-type="bibr" rid="B58">58</xref>) indicated that the vigorous physical activity item from the HBSC study demonstrates strong reliability and validity. However, other studies have noted that its validity compared to objective monitoring of physical activity is lacking, suggesting the possibility of errors stemming from subjective surveys. Although the study accounts for various covariates, there may still be unmeasured confounding factors that could impact the observed relationship between physical activity and academic performance.</p>
</sec>
<sec id="s4d"><label>4.4</label><title>Implications for research and practice</title>
<p>Future research should adopt longitudinal approaches to track changes over time and gain deeper insights into the association between vigorous physical activity and academic performance. Objective measures such as wearable devices and standardized tests could mitigate biases associated with self-reported measurement. Moreover, Future research could investigate this relationship in various geographical and cultural settings to improve the external validity of the findings. Furthermore, thorough exploration of gender differences in the impact of vigorous physical activity on academic achievement is warranted. Understanding the underlying mechanisms driving these differences is crucial for providing valuable insights into gender-specific effects. Therefore, future studies should delve deeper into these mechanisms to contribute to a more comprehensive understanding of the interplay between vigorous physical activity and academic performance.</p>
</sec>
</sec>
<sec id="s5" sec-type="conclusions"><label>5</label><title>Conclusions</title>
<p>The findings highlight the potential benefits of vigorous physical activity on academic achievement among adolescents in adolescents. Future research should be suggested to employ longitudinal designs, utilize objective measures of vigorous physical activity and academic achievement, conduct intervention studies, and explore mediating factors.</p>
</sec>
</body>
<back>
<sec id="s6" sec-type="data-availability"><title>Data availability statement</title>
<p>Publicly available datasets were analyzed in this study. This data can be found here: Data from the Health Behaviour in School-aged Children (HBSC) survey.</p>
</sec>
<sec id="s7" sec-type="ethics-statement"><title>Ethics statement</title>
<p>Written informed consent was obtained from the minor(s)&#x0027; legal guardian/next of kin for the publication of any potentially identifiable images or data included in this article.</p>
</sec>
<sec id="s8" sec-type="author-contributions"><title>Author contributions</title>
<p>XZ: Data curation, Formal Analysis, Methodology, Project administration, Writing &#x2013; original draft, Writing &#x2013; review &#x0026; editing. DZ: Data curation, Investigation, Methodology, Writing &#x2013; original draft, Writing &#x2013; review &#x0026; editing. XY: Data curation, Formal Analysis, Writing &#x2013; original draft, Writing &#x2013; review &#x0026; editing. SC: Conceptualization, Formal Analysis, Supervision, Writing &#x2013; original draft, Writing &#x2013; review &#x0026; editing.</p>
</sec>
<sec id="s9" sec-type="funding-information"><title>Funding</title>
<p>The author(s) declare that no financial support was received for the research, authorship, and/or publication of this article.</p>
</sec>
<sec id="s10" sec-type="COI-statement"><title>Conflict of interest</title>
<p>The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.</p>
</sec>
<sec id="s12" sec-type="disclaimer"><title>Publisher&#x0027;s note</title>
<p>All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article, or claim that may be made by its manufacturer, is not guaranteed or endorsed by the publisher.</p>
</sec>
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