目的:本研究旨在比较生理性震颤,握力,久坐和身体活跃的老年人的认知功能。
方法:24名年龄≥65岁的老年人参加了这项研究,并分为久坐(76.5±4.4岁,n=12)和体力活动(73.5±3.3年,n=12)组。每组完成认知功能评估的简易精神状态检查(MMSE)。使用加速度计对静止的双手和左/右手测量生理性震颤,手掌上的1,000g哑铃处于中立位置,肘部弯曲90°。通过握力强度和完成短物理性能电池(SPPB)和6分钟步行测试来测量身体健康。
结果:体力活动组比静坐组双手和手掌上有1000g哑铃的左/右手生理性震颤水平明显降低(P<0.05)。对于认知功能,运动组的得分明显高于久坐组(P<0.001)。认知功能与左右握力无显著相关性(左:r=0.117,P=0.585;右:r=0.230,P=0.279),休息时双手生理性震颤(左:r=-0.524,P<0.001;右:r=-0.508,P<0.05),左手/右手手掌上有1,000g哑铃(左:r=-0.505,P<0.05;右:r=-0.458,P<0.05)。
结论:手的生理性震颤有可能成为老年人认知功能的有用预测因子。
OBJECTIVE: This study aimed to compare the physiological tremor, grip strength, and cognitive function of sedentary and physically active older adults.
METHODS: Twenty-four older adults aged ≥65 years participated in this study and were divided into the sedentary (76.5±4.4 years, n=12) and physically active (73.5±3.3 years, n=12) groups. Each group completed the Mini-Mental State Examination (MMSE) for cognitive function assessment. Physiological tremor was measured using an accelerometer for both hands at rest and the left/right hand with a 1,000 g dumbbell on the palm in neutral positions and the elbow flexed at 90°. Physical fitness was measured by grip strength and completion of the Short Physical Performance Battery (SPPB) and the 6-min walk test.
RESULTS: The physically active group showed a significantly lower level of physiological tremor in both hands at rest and the left/right hand with a 1,000 g dumbbell on the palm (P<0.05) than that in the sedentary group. For cognitive function, the physically active group showed significantly higher scores than those in the sedentary group (P<0.001). No significant correlation was found between cognitive function and left/right grip strength (left: r = 0.117, P = 0.585; right: r = 0.230, P = 0.279), physiological tremor in both hands at rest (left: r = -0.524, P < 0.001; right: r = -0.508, P < 0.05), and the left/right hand with a 1,000 g dumbbell on the palm (left: r = -0.505, P < 0.05; right: r = -0.458, P < 0.05).
CONCLUSIONS: Physiological tremor of the hands has the potential to be a useful predictor of cognitive function in older adults.