Laboratoire Motricité Humaine Expertise Sport Sant (UPR 6312), Université Côte d'Azur, École Universitaire de Recherche HEALTHY: Ecosystèmes Des Sciences de La Santé, Campus STAPS - Sciences du Sport, 261, Boulevard du Mercantour, Nice Cedex 03, 06205, Nice, France.
Centre Hospitalier Universitaire de Nice, Nice, France.
Eur Geriatr Med. 2024 Aug;15(4):927-937. doi: 10.1007/s41999-024-01008-8. Epub 2024 Jul 11.
Isokinetic knee extensor strength is poorly evaluated in geriatric day hospitals (GDHs), despite its potential functional significance compared to grip strength. This study aimed to investigate age-related effects on absolute and relative isokinetic knee extensor peak torque (KEPT) data in community-dwelling older GDH patients.
A total of 472 French GDH patients (179 men and 293 women, aged 75-94 years) participated in this study. Absolute and relative KEPT were measured at six distinct angular velocities between 0.52 and 3.14 rad/s. In addition, comfortable gait speed and grip strength were assessed. Participants were stratified by sex and age using 5-year intervals. One-way ANOVAs were used to examine age-related effects on KEPT values. Multiple linear regression models were employed to investigate the associations between gait speed and both mean KEPT values and grip strength, with separate models conducted on absolute and relative values.
The recruited GDH patients presented lower absolute and relative KEPT values in comparison with established reference values for healthy community-dwelling older individuals, with men being consistently stronger than women. Notably, there was a significant decline in both absolute and relative KEPT values beyond the age of 85 for both sexes. Importantly, the multiple linear regression analyses conducted revealed a significant positive relationship between gait speed and mean KEPT values, surpassing the association with grip strength.
These findings underscore the clinical importance of assessing isokinetic knee extensor strength in community-dwelling older GDH patients, particularly for tailoring personalized physical activity interventions.
与握力相比，等速膝关节伸肌力量在老年日托中心（GDH）中的评估效果较差，尽管其具有潜在的功能意义。本研究旨在调查社区居住的老年 GDH 患者中与年龄相关的绝对和相对等速膝关节伸肌峰值扭矩（KEPT）数据的影响。
共有 472 名法国 GDH 患者（179 名男性和 293 名女性，年龄 75-94 岁）参与了这项研究。在 0.52 到 3.14 弧度/秒的六个不同角速度下测量绝对和相对 KEPT。此外，还评估了舒适的步行速度和握力。参与者按性别和年龄分为 5 年间隔的组。使用单因素方差分析来检查 KEPT 值与年龄相关的影响。采用多元线性回归模型研究了步行速度与平均 KEPT 值和握力之间的关系，分别对绝对和相对值进行了单独的模型。
与健康社区居住的老年个体的既定参考值相比，招募的 GDH 患者的绝对和相对 KEPT 值较低，男性始终比女性更强壮。值得注意的是，男女两性的绝对和相对 KEPT 值均在 85 岁以上显著下降。重要的是，进行的多元线性回归分析表明，步行速度与平均 KEPT 值之间存在显著的正相关关系，超过了与握力的关联。
这些发现强调了在社区居住的老年 GDH 患者中评估等速膝关节伸肌力量的临床重要性，特别是对于制定个性化的体育活动干预措施。
