老年人自觉让位，在旁边可以帮助一下，但不要作障碍人的事。
Old people should voluntarily offer younger ones their places and give them help from the sidelines, but never stand in their way.
自觉运动障碍与休閒身体活动量、费力身体活动量、中等费力身体活动量呈显著负相关；
Perceive exercise for barrier were negative correlated with leisure physical activity, vigorous physical activity, moderate physical activity.
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