Total daily activity measured with actigraphy and motor function in community-dwelling older persons with and without dementia.
Total daily activity measured with actigraphy and motor function in community-dwelling older persons with and without dementia.
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DOI：
10.1097/wad.0b013e31822fc3cb
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发表时间：
2012-07
影响因子：
2.1
通讯作者：
Buchman AS
中科院分区：
文献类型：
--
作者：
James BD;Boyle PA;Bennett DA;Buchman AS
身体活动的活动记录测量不依赖于参与者的自我报告，并且对于检查整个老年人特别是痴呆症患者的身体活动的健康益处的努力可能特别重要，痴呆症患者是运动功能丧失特别突出的群体。我们测试了体动记录仪是否可以用来检查社区居住的老年人（n=70）和无临床痴呆症（n=624）的每日总体力活动和运动功能之间的关系。采用体动记录仪测量每日总活动量，中位数为9天（范围2-16天）。所有参与者还进行了结构化检查，包括9个肌肉力量和9个运动性能指标总结为一个复合措施。在控制年龄、性别和教育的线性回归模型中，每日总活动与整体运动评分相关（β=0.13，SD=0.01，p<0.001）。在调整身体成分、认知、抑郁症状、残疾、血管危险因素和疾病后，这种关联仍然显著（β=0.07，SD=0.01，p < 0.001）。这种关联不因痴呆状态而异（交互作用p=0.53）。在没有痴呆症的人中，这种关联与自我报告的身体活动无关。每日总活动量与肌肉力量（β=0.10，SD=0.02，p<0.001）和运动表现（β=0.16，SD=0.02，p<0.001）相关。活动记录仪可以在社区环境中使用，以提供与广泛的运动表现相关的日常活动的客观测量，这些关联不会因痴呆状态而变化。腕动计可以提供一种手段，以更充分地阐明老年运动障碍的性质和过程。
Actigraphic measures of physical activity do not rely on participant self-report and may be of particular importance for efforts to examine the health benefits of physical activity across the full spectrum of older individuals especially those with dementia, a group in which loss of motor function is particularly salient. We tested whether actigraphy could be employed to examine the relationship between total daily physical activity and motor function in community-dwelling older persons both with (n=70) and without clinical dementia (n=624). Total daily activity was measured with actigraphy for a median of 9 (range 2–16) days. All participants also underwent a structured examination including 9 muscle strength and 9 motor performance measures summarized as a composite measure. In linear regression models controlling for age, sex, and education, total daily activity was associated with global motor scores (β=0.13, SD=0.01, p<0.001). This association remained significant after adjusting for body composition, cognition, depressive symptoms, disability, vascular risk factors and diseases (β=0.07, SD=0.01, p < 0.001). The association did not vary by dementia status (interaction p=0.53). In persons without dementia, the association was independent of self-reported physical activity. Total daily activity was associated with both muscle strength (β=0.10, SD=0.02, p<0.001) and motor performance (β=0.16, SD=0.02, p<0.001). Actigraphy can be employed in the community-setting to provide objective measures of total daily activity that are associated with a broad range of motor performances and these associations did not vary by dementia status. Actigraphy may provide a means to more fully explicate the nature and course of motor impairment in old age.