AUTHOR=O’Brien Myles W. TITLE=Time to stand up faster: underutilization of real-world sit-to-stand transition velocity in aging research JOURNAL=Frontiers in Aging VOLUME=Volume 7 - 2026 YEAR=2026 URL=https://www.frontiersin.org/journals/aging/articles/10.3389/fragi.2026.1639286 DOI=10.3389/fragi.2026.1639286 ISSN=2673-6217