Accelerometer Assessment of Physical Activity in Active, Healthy Older Adults
Accelerometer Assessment of Physical Activity in Active, Healthy Older Adults
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DOI：
10.1123/japa.17.1.17
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发表时间：
2009-01-01
影响因子：
1.5
通讯作者：
Esliger, Dale W.
中科院分区：
文献类型：
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作者：
Copeland, Jennifer L.;Esliger, Dale W.
尽管加速度计被广泛用于客观地监测成年人和青年人的身体活动，但对老年人的关注很少。本研究的目的是定义一组老年人的加速度计计数临界点，然后评估该组的身体活动7天。参与者（N = 38，年龄69.7 +/- 3.5岁）使用Actigraph 7164加速度计完成了基于实验室的校准。定义中度至剧烈体力活动（MVPA）的临界点为1，041计数/分钟。平均而言，参与者每天获得68分钟的MVPA，尽管超过65%的MVPA是零星活动。较长时间的活动发生在早上（早上6点到晚上12点）。比一天中的其他时间更频繁。几乎14小时/天花在光强度活动。这项研究证明了加速计提供的关于老年人活动模式的丰富信息，这些信息可能会进一步加深我们对身体活动和健康衰老之间关系的理解。
Despite widespread use of accelerometers to objectively monitor physical activity among adults and youth, little attention has been given to older populations. The purpose of this study was to define an accelerometer-count cut point for a group of older adults and to then assess the group's physical activity for 7 days. Participants (N = 38, age 69.7 +/- 3.5 yr) completed a laboratory-based calibration with an Actigraph 7164 accelerometer. The cut point defining moderate to vigorous physical activity (MVPA) was 1,041 counts/min. On average, participants obtained 68 min of MVPA per day, although more than 65% of this occurred as sporadic activity. Longer bouts of activity occurred in the morning (6 a.m. to 12 p.m.) more frequently than other times of the day. Almost 14 hr/day were spent in light-intensity activity. This study demonstrates the rich information that accelerometers provide about older adult activity patterns-information that might further our understanding of the relationship between physical activity and healthy aging.