Increases Cardiac Output, stronger heart contractions pump more blood, increased stroke volume, thickens left ventricle wall (more muscular), decreases hearts' oxygen requirements.
心输出量增加，心脏收缩加强能泵更多的血液，心搏量增加，左心室壁变厚(更多肌肉)，心脏对氧气的需要减少。
Between them, Endurance Group changed more:not only left ventricle cavity shin enlarged, but also the wall of left heart thickened slightly, the weight of left cardiac muscle increased apparently.
而力量组变化较小，表现为左室壁厚度的明显增加和左室重量的轻度增大。
Between them, Endurance Group changed more:not only left ventricle cavity shin enlarged, but also the wall of left heart thickened slightly, the weight of left cardiac muscle increased apparently.
而力量组变化较小，表现为左室壁厚度的明显增加和左室重量的轻度增大。
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