在划臂的各个阶段,Michael的背部和躯干大部分时间保持水平。过多的垂直运动耗费体力和增加阻力。对于游泳速度而言,很重要的一点是:减少阻力要优先于增加推动力。
(Michael’s back and torso remains most horizontal through all phases of arm stroke. Excessive vertical motion wastes energy and increases resistances. It is important to realize that the top range of race speed: minimization of resistances takes priority over increased propulsive force.)