Aerobic exercise is a series of activities which can improve our heart-lung function by maintaining longer, including running, bicycling, swimming and so on.
有氧运动是在长期坚持下可改善心肺功能的一系列活动。有氧运动包括跑步、骑单车、游泳等。
But the body constitution of senior students was worse than the juniors, the main differences lay in heart-lung function and strength, while the stature and avoirdupois were not evidently different.
经过对比研究，发现高年级学生体质不如低年级，心肺机能、力量呈下降趋势，身高标准体重没有明显差异。
But the body constitution of senior students was worse than the juniors, the main differences lay in heart-lung function and strength, while the stature and avoirdupois were not evidently different.
经过对比研究，发现高年级学生体质不如低年级，心肺机能、力量呈下降趋势，身高标准体重没有明显差异。
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