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美国运动医学院提出了成年人在进行体育锻炼时应注意的四条原则: 1.次数:每周3—5次。2.运动量:心率应保持在最高心率的60—90%;吸氧量应保
The American College of Sports Medicine puts forward four principles that adults should pay attention to when performing physical exercises: 1. Times: 3-5 times a week. 2 exercise: heart rate should be maintained at a maximum heart rate of 60-90%; oxygen should be insured