问题
单项选择题
老年人健身锻炼时适宜运动量用（）公式更为准确。
A.220－年龄；
B.208－（0.7×年龄）；
C.170－年龄；
D.最大心率×50%。
答案
参考答案：B
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老年人健身锻炼时适宜运动量用（）公式更为准确。
A.220－年龄；
B.208－（0.7×年龄）；
C.170－年龄；
D.最大心率×50%。
参考答案：B
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