The 12- to 14-year-old boys and girls were asked to fill in questionnaires assessing their physical activity levels, their overall satisfaction with life and asking them to describe their own health.
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结果表明，本系统成功地实现了对身体成分测定的实验操作及数据采集，具有较高的精确性和可信度。
Results show that the analytical system succeeds in realizing the experiment and data collection for body composition measurement and has high accuracy and validity.
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