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首页> 外文期刊>Journal of obesity >Accuracy of Intensity and Inclinometer Output of Three Activity Monitors for Identification of Sedentary Behavior and Light-Intensity Activity
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Accuracy of Intensity and Inclinometer Output of Three Activity Monitors for Identification of Sedentary Behavior and Light-Intensity Activity

机译：用于确定久坐行为和光强度活动的三个活动监视器的强度和测斜仪输出的精度

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Purpose. To examine the accuracy of intensity and inclinometer output of three physical activity monitors during various sedentary and light-intensity activities. Methods. Thirty-six participants wore three physical activity monitors (ActiGraph GT1M, ActiGraph GT3X+, and Step Watch) while completing sedentary (lying, sitting watching television, sitting using computer, and standing still) light (walking 1.0 mph, pedaling 7.0 mph, pedaling 15.0 mph) intensity activities under controlled settings. Accuracy for correctly categorizing intensity was assessed for each monitor and threshold. Accuracy of the GT3X+ inclinometer function (GT3X+Incl) for correctly identifying anatomical position was also assessed. Percentage agreement between direct observation and the monitor recorded time spent in sedentary behavior and light intensity was examined. Results. All monitors using all thresholds accurately identified over 80% of sedentary behaviors and 60% of light-intensity walking time based on intensity output. The Step Watch was the most accurate in detecting pedaling time but unable to detect pedal workload. The GT3X+Incl accurately identified anatomical position during 70% of all activities but demonstrated limitations in discriminating between activities of differing intensity. Conclusions. Our findings suggest that all three monitors accurately measure most sedentary and light-intensity activities althoughxhoice of monitors should be based on study-specific needs.
机译：目的。在各种久坐和光照强度活动中检查三个身体活动监视器的强度和测斜仪输出的准确性。方法。三十六名参与者在完成久坐（躺着，坐着看电视，坐在电脑旁坐着，站着不动）的灯光（步行1.0英里/小时，踩踏板7.0英里/小时，踩踏板15.0英寸）时，佩戴了三个身体活动监测器（ActiGraph GT1M，ActiGraph GT3X +和Step Watch）。英里/小时）强度活动在受控设置下进行。对每个监控器和阈值评估强度正确分类的准确性。还评估了GT3X +测斜仪功能（GT3X + Incl）正确识别解剖位置的准确性。检查了直接观察和监测器记录的久坐行为和光强度所花费时间之间的百分比一致性。结果。使用所有阈值的所有监视器都可以根据强度输出准确地识别80％以上的久坐行为和60％的光强度步行时间。 Step Watch是检测踏板时间最准确的方法，但无法检测踏板的工作量。 GT3X + Incl在所有活动的70％中都能准确识别出解剖位置，但在区分强度不同的活动方面显示出局限性。结论。我们的发现表明，尽管监视器的选择应基于特定研究的需求，但所有三台监视器都可以准确地测量大多数久坐和光照强度活动。

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