相反，在运动频度或密度之间并无显著相关性。
In contrast, there was no significant association between exercise frequency or intensity.
为探讨运动项目与运动频度对心肺功能的影响。
This article aims at discussing the effect of exercise events and frequency on cardiac pulmonary function.
运动强度须因人而异，运动频度一般要求每周3次至5次，每次持续20分钟至60分钟即可。
Exercise intensity should vary with the frequency of general requirements for exercise 3 to 5 times per week, each lasting 20-60 minutes can be.
结果表明：当代大学新生在高中阶段参加体育锻炼以得到快乐为首要目的，呈现出多元化的特征，并初步形成了现代多维的健康观念；高中阶段根据运动兴趣参加体育锻炼，并有较高的频度；
The results indicate:For the freshmen in this modern time, their aim to take part in sports activity is to gain happiness when they were high school students whose characteristics are diversified;
结果表明：当代大学新生在高中阶段参加体育锻炼以得到快乐为首要目的，呈现出多元化的特征，并初步形成了现代多维的健康观念；高中阶段根据运动兴趣参加体育锻炼，并有较高的频度；
The results indicate:For the freshmen in this modern time, their aim to take part in sports activity is to gain happiness when they were high school students whose characteristics are diversified;
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