Department of Education Sciences, University of Alcalá, Madrid, Spain.
Physiotherapy and Rehabilitation Service, Mar Báltico Health Center (SERMAS), Madrid, Spain.
J Bodyw Mov Ther. 2024 Oct;40:1195-1200. doi: 10.1016/j.jbmt.2023.05.001. Epub 2023 May 31.
The time dedicated to movement (e.g., physical activity) and non-movement behaviours (e.g., sitting) has important implications in terms of maintaining physical performance (PP), while it has also been independently associated with better or poorer PP. Physical performance in older adults may be significantly improved by changing daily movement and non-movement behaviours. Therefore, the aims of this study were: (i) to analyse the associations of the time dedicated to movement and non-movement behaviours (i.e., lying down, sitting, standing, and locomotion) with PP (Time up and Go test and the Short Physical Performance Battery); and (ii) to examine how theoretically reallocating time between these behaviours is associated with this outcome.
Forty-nine older adults (mean age: 82.9 ± 6.9 yrs) wore an activity monitor to measure periods of lying down, sitting, standing and locomotion. PP measures included the Time up and Go test (TUG) and the Short Physical Performance Battery (SPPB).
Replacing 60 min∙d-1 of lying down time with standing resulted in a significant improvement in TUG (β = -4.99, 95% CI = -8.81, -1.17), and SPPB (β = -0.93, 95% CI = 0.04, 1.82). Likewise, replacing 60 min∙d-1 of sitting time with standing also resulted in a significant improvement in TUG (β = -4.51, 95% CI = -8.67, -0.37). Meanwhile, replacing 60 min∙d-1 of lying down or sitting time with locomotion resulted in a significant improvement in the Sit to Stand test of the SPPB (β = 0.82, 95% CI = 0.14, 1.49, and β = 0.90, 95% CI = 0.23, 1.56, respectively).
Isotemporal substitution modelling suggests that replacing 60 min∙d-1 of non-movement or stationary behaviours, such as standing, with an equivalent locomotion time may contribute to improved PP in older adults.
在保持身体表现（PP）方面，分配给运动（如体力活动）和非运动行为（如坐着）的时间具有重要意义，同时它也与更好或更差的 PP 独立相关。通过改变日常的运动和非运动行为，老年人的身体表现可能会显著提高。因此，本研究的目的是：（i）分析分配给运动和非运动行为（即躺下、坐着、站立和移动）的时间与 PP（起立行走测试和简短身体表现电池）之间的关联；（ii）研究如何在理论上重新分配这些行为之间的时间与这一结果相关联。
49 名老年人（平均年龄：82.9±6.9 岁）佩戴活动监测器，以测量躺下、坐着、站立和移动的时间。PP 测量包括起立行走测试（TUG）和简短身体表现电池（SPPB）。
用站立代替 60 分钟/天的卧床时间，TUG（β=-4.99，95%CI=-8.81，-1.17）和 SPPB（β=-0.93，95%CI=0.04，1.82）均显著改善。同样，用站立代替 60 分钟/天的坐姿也使 TUG（β=-4.51，95%CI=-8.67，-0.37）显著改善。同时，用 60 分钟/天的卧床或坐姿代替运动，SPPB 的坐立站测试也显著改善（β=0.82，95%CI=0.14，1.49，β=0.90，95%CI=0.23，1.56）。
等时替代模型表明，用相当于运动的时间代替 60 分钟/天的非运动或静止行为（如站立），可能有助于提高老年人的 PP。
