Can functional exercise capacity discriminate older individuals with poor postural control?

AbstractPostural instability can be related to functional limitations as a result of the aging process. This study aimed to compare functional exercise capacity and postural control in older adults. Participants were allocated into three groups according to their functional exercise capacity based on the six minute walking test (6MWT): 1) Low performance group (LP: distance walked ≤ 80% of the predicted value n = 19), 2) Normal performance group (NP: distance walked 81-100% of the predicted value n = 21) and, 3) High performance group (HP: distance walked >100% of the predicted value n = 23). All groups performed three trials of a one-leg stance for 30s on a force platform. LP showed worse postural control in comparison to NP and HP, and significant differences (p摘要 姿势不稳与衰老过程引发的功能受限密切相关。本研究旨在比较老年人群的功能运动能力与姿势控制能力。本研究依据6分钟步行试验（six minute walking test, 6MWT）评估受试者的功能运动能力，并据此将其分为三组：1）低运动能力组（Low performance group, LP：步行距离≤预测值的80%，n=19）；2）正常运动能力组（Normal performance group, NP：步行距离为预测值的81%~100%，n=21）；3）高运动能力组（High performance group, HP：步行距离＞预测值的100%，n=23）。所有受试者均在测力平台（force platform）上完成3次单腿站立测试，每次持续30秒。低运动能力组的姿势控制能力相较于正常运动能力组与高运动能力组更差，且组间存在显著差异（p