Abstract：
OBJECTIVE: 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.
METHODS: 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.
RESULTS: 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.
CONCLUSIONS: 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.
METHODS: 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.
RESULTS: 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.
CONCLUSIONS: 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.
摘要：
目标：在老年日间医院（GDHs）中，等速膝关节伸肌强度评估不佳，尽管与握力相比，它具有潜在的功能意义。这项研究旨在调查社区居住的老年GDH患者对绝对和相对等速膝关节伸肌峰值扭矩（KEPT）数据的年龄相关影响。
方法：共有472名法国GDH患者（179名男性和293名女性，75-94岁）参加了这项研究。在0.52至3.14rad/s之间的六个不同角速度下测量绝对和相对KEPT。此外,评估了舒适的步态速度和握力。参与者以5年的间隔按性别和年龄进行分层。单向ANOVAs用于检查年龄对KEPT值的影响。采用多元线性回归模型来研究步态速度与平均KEPT值和握力之间的关联。对绝对值和相对值进行单独的模型。
结果：与健康社区居住老年人的既定参考值相比，招募的GDH患者的绝对和相对KEPT值较低，男人总是比女人强壮。值得注意的是,在85岁以后,男女性别的KEPT绝对值和相对值均显著下降.重要的是,进行的多元线性回归分析显示，步态速度和平均KEPT值之间存在显著正相关关系，超过握力的关联。
结论：这些发现强调了评估社区居住的老年GDH患者等速膝关节伸肌力量的临床重要性，特别是定制个性化的体育活动干预措施。
方法：共有472名法国GDH患者（179名男性和293名女性，75-94岁）参加了这项研究。在0.52至3.14rad/s之间的六个不同角速度下测量绝对和相对KEPT。此外,评估了舒适的步态速度和握力。参与者以5年的间隔按性别和年龄进行分层。单向ANOVAs用于检查年龄对KEPT值的影响。采用多元线性回归模型来研究步态速度与平均KEPT值和握力之间的关联。对绝对值和相对值进行单独的模型。
结果：与健康社区居住老年人的既定参考值相比，招募的GDH患者的绝对和相对KEPT值较低，男人总是比女人强壮。值得注意的是,在85岁以后,男女性别的KEPT绝对值和相对值均显著下降.重要的是,进行的多元线性回归分析显示，步态速度和平均KEPT值之间存在显著正相关关系，超过握力的关联。
结论：这些发现强调了评估社区居住的老年GDH患者等速膝关节伸肌力量的临床重要性，特别是定制个性化的体育活动干预措施。
