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预处理标准对基于加速度计的身体活动分析的影响

Bing Han1, Lilian Perez2, Deborah A Cohen1

  • 1Kaiser Permanente Southern California, Pasadena, CA, United States of America.

PloS one
|January 2, 2025
PubMed
概括

使用加速度计测量身体活动对数据预处理敏感. 最低磨损时间要求显著影响中度至强度体力活动 (MVPA) 分析,不同的强度计算产生不同的结果.

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Factors Affecting Activity Coefficient01:17

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The extended Debye-Hückel equation indicates that the activity coefficient of an ion in an aqueous solution at 25°C depends on three partially interdependent properties: the ionic strength of the solution, the charge of the ion, and the ion size. 
The activity coefficient value for an ion is close to one when the solution has almost zero ionic strength, i.e., when the solution shows close to ideal behavior. As the ionic strength of the solution increases from 0 to 0.1 mol/L, a...
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