Test timed up and go and its correlation with age and functional exercise capacity in asymptomatic women

Abstract Introduction: The Timed Up and Go test (TUG) is widely used and valid in chronic patients, but rarely addressed in asymptomatic individuals. Objective: To assess the reliability, the age-related changes and the correlation between TUG and the Functional Exercise Capacity (FEC) adjusted for non-institutionalized middle-aged and elderly women. Methods: Ninety-eight women (57 ± 10 years) were selected and stratified into age groups. We have performed the tests TUG, Berg Balance Scale (BBS) and evaluation of usual gait speed (UGS). Fifty-eight participants (57 ± 10 years) also performed incremental shuttle walk test (ISWT). Results: Worse performance in TUG (p < 0,05) for participants aged ≥ 70 years for age groups 40-49 and 50-59 years. The reliability of TUG was excellent between the first and second TUG (intraclass correlation coefficient, 0.933; confidence interval of 95%, from 0.901 to 0.955) and between the second and third TUG (0.958, 0.938 to 0.972). The group of 58 participants who underwent further the ISWT, TUG correlated significantly (p <0.05) with ISWT (r = -0.72), VUM (r = -0.54) and BBS (r= 0.58). A multiple linear regression analysis selected TUG (R2 = 0.517) and VUM (R2 = 0.083) as determinants of FEC. Conclusion: TUG adapted for asymptomatic women is reliable and able to assess the decline of physical mobility with advancing age and it also crucial to the FEC.

摘要：引言：计时起立行走测试（Timed Up and Go test，TUG）在慢性疾病患者中应用广泛且效度良好，但针对无症状人群的相关研究较为匮乏。研究目的：评估非住院中老年女性群体中，TUG的信度、年龄相关变化特征，以及校正混杂因素后TUG与功能运动能力（Functional Exercise Capacity，FEC）之间的相关性。方法：本研究纳入98名女性受试者（年龄57±10岁），按年龄分层分组。所有受试者均接受计时起立行走测试（TUG）、伯格平衡量表（Berg Balance Scale，BBS）评估以及常规步速（usual gait speed，UGS）检测。其中58名受试者（年龄57±10岁）额外完成了增量穿梭行走测试（incremental shuttle walk test，ISWT）。结果：相较于40~49岁与50~59岁年龄组，≥70岁受试者的TUG表现更差（p<0.05）。TUG的重测信度优异：首次与第二次TUG测试的组内相关系数为0.933，95%置信区间为0.901~0.955；第二次与第三次TUG测试的组内相关系数为0.958，95%置信区间为0.938~0.972。在完成ISWT的58名受试者中，TUG与增量穿梭行走测试（ISWT，r=-0.72）、VUM（r=-0.54）以及伯格平衡量表（BBS，r=0.58）均呈显著相关（p<0.05）。多元线性回归分析显示，TUG（决定系数R²=0.517）与VUM（决定系数R²=0.083）可作为功能运动能力（FEC）的预测因子。结论：针对无症状女性适配后的TUG测试具有良好信度，能够评估随年龄增长出现的身体移动能力下降，同时对功能运动能力评估具有重要价值。