The activPALTM Accurately Classifies Activity Intensity Categories in Healthy Adults.
The activPALTM Accurately Classifies Activity Intensity Categories in Healthy Adults.
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DOI：
10.1249/mss.0000000000001177
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发表时间：
2017-05
影响因子：
4.1
通讯作者：
Freedson PS
中科院分区：
文献类型：
--
作者：
Lyden K;Keadle SK;Staudenmayer J;Freedson PS
activePAL ™（AP）监测器已被广泛用于区分坐着、站立和踏步时间。然而，它的有效性在预测时间的身体活动强度类别在自由生活的环境中尚未确定。确定AP在估计自由生活环境中久坐、轻度和中度至剧烈体力活动（MVPA）时间方面的有效性。13名参与者（平均（SD）年龄24.8岁（5.2），BMI 23.8 kg.m2（1.9））直接观察（DO）三个10小时的时间段穿着AP。开发了一个自定义R程序，用于总结AP中详细的活动和久坐行为变量。将AP估计值与DO进行比较。AP准确和精确地估计了活动强度类别的时间（偏倚（95% CI）：久坐= 0.8 min（−2.9，4.5），光照= 1.7 min（2.2，5.7）和−2.6 min（−5.8，0.7））。强度类别中时间的总体准确率为96.2%。AP还准确地估计了指南分钟、指南回合、长时间静坐分钟和长时间静坐回合。AP可用于准确地捕获自由生活环境中活动和久坐行为变量的个性化估计。
The activPAL™ (AP) monitor is well established for distinguishing sitting, standing and stepping time. However, its validity in predicting time in physical activity intensity categories in a free-living environment has not been determined. To determine the validity of the AP in estimating time spent in sedentary, light and moderate-to-vigorous physical activity (MVPA) in a free-living environment. Thirteen participants (mean (SD) age 24.8 y (5.2), BMI 23.8 kg.m2 (1.9)) were directly observed (DO) for three 10-hr periods wearing an AP. A custom R program was developed and used to summarize detailed active and sedentary behavior variables from the AP. AP estimates were compared to DO. The AP accurately and precisely estimated time in activity intensity categories (bias (95% CI) sedentary = 0.8 min (−2.9, 4.5), light = 1.7 min (2.2, 5.7) and −2.6 min (−5.8, 0.7)). The overall accuracy rate for time in intensity categories was 96.2%. The AP also accurately estimated guideline minutes, guideline bouts, prolonged sitting minutes and prolonged sitting bouts. The AP can be used to accurately capture individualized estimates of active and sedentary behavior variables in free-living settings.