Middle intensity (46-60%FC) can improve the cardiac fitness, e.g. increase EDD, EDV, EF, SV, reduce FIR and enhance the contraction ability of cardiac muscles, also meliorate vital capacity and systolic pressure.

• 进行中等强度(46-60%25FC)健走锻炼，可以改善心脏功能，表现为EDD、EDV加大，射血分数、每搏量增加，安静时心率减慢，心肌收缩能力增强，安静时收缩压和肺活量改善，还可使FC得到提高。