采用Lifecorder加速度计和身体活动记录法(Physical Activity Record, PAR)观察研究对象7天内的能量消耗状况。以能量平衡法测量值作为参照,评价这两种策略的测量效度。
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physical activity record
身体活动记录
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Keeping a record of your physical activity routine inspires you to do more.
CNN: Vital Signs health tips
In the latest study, the researchers from the Harvard School of Public Health asked 189 young men who were students at a university in New York to record how many hours they had been spending doing physical activity and watching TV in a typical week.
BBC: Prolonged TV viewing linked to lower sperm count
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