Glenn Jordan M, Gray Michelle, Vincenzo Jennifer, Paulson Sally, Powers Melissa
J Aging Phys Act. 2017 Apr;25(2):305-310. doi: 10.1123/japa.2016-0031. Epub 2016 Oct 21.
This investigation examined differences in functional sit-to-stand power/velocity between cohorts of adults aged 18-97 years. This study included 264 healthy adults classified into four cohorts (18-40, C1; 60-69, C2; 70-79, C2; ≥ 80, C4). Participants completed the sit-to-stand task five times. Power and velocity were measured via the TENDO power analyzer. Absolute average power was maintained from C1-C3, but decreased (p < .01) in C4. Absolute peak power decreased between C1-C2 (p < .01), was similar between C2-C3, and decreased in C4 (p < .01). Relative (to body weight) average and peak power decreased between C1-C2 (p < .01), was similar between C2-C3, and decreased in C4 (p < .01). Average velocity was similar between C1 and C2, but decreased in C3 (p < .01) and C4 (p < .01), respectively. Peak velocity was significantly different between all cohorts (p < .01). Declines in functional power may plateau during the seventh and eighth decades, accelerating after 80 years.
本研究调查了18至97岁成年人队列之间功能性坐立起的力量/速度差异。该研究纳入了264名健康成年人，分为四个队列（18 - 40岁，C1；60 - 69岁，C2；70 - 79岁，C3；≥80岁，C4）。参与者完成五次坐立起任务。通过TENDO功率分析仪测量力量和速度。从C1到C3，绝对平均功率保持稳定，但在C4中下降（p < 0.01）。绝对峰值功率在C1到C2之间下降（p < 0.01），在C2到C3之间相似，在C4中下降（p < 0.01）。相对（相对于体重）平均功率和峰值功率在C1到C2之间下降（p < 0.01），在C2到C3之间相似，在C4中下降（p < 0.01）。平均速度在C1和C2之间相似，但在C3（p < 0.01）和C4（p < 0.01）中分别下降。峰值速度在所有队列之间存在显著差异（p < 0.01）。功能性力量的下降在七十和八十岁时可能趋于平稳，80岁以后加速。
