...将重要名词操作性定义界定如下: (一)运动行为 本研究中运动行为部份共有四题,每题共分4个尺度: 1、运动频率(exercise frequency):指每周运动的天数(含体育课),4个尺度 分别为0-2天、3-4天、5-6天、7天。
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low-frequency electron exercise 低频电体操疗法
In contrast, there was no significant association between exercise frequency or intensity.
相反，在运动频度或密度之间并无显著相关性。
Answer: it's normal to feel hungry when you start a new exercise regimen or you increase your exercise frequency or intensity.
答案：当开始一种新的锻炼方法或增加锻炼频率或紧张程度时，有饥饿感是很正常的。
Another experiment demonstrated that physical exercise, which was sufficiently vigorous to double the rate of breathing, had no effect on the frequency of yawning.
另一项实验表明，体育运动——尤其是剧烈的运动——可以使呼吸频率增加一倍，但这对打哈欠的频率没有影响。
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