If the athlete strengthens the stretching range of the hip joint during the single support,it will help to strengthen muscle force and improve the effect of pedaling ice.

• 在整个蹬冰过程中髋、膝关节起主要作用,单支撑蹬冰阶段膝关节伸展幅度过小,将造成消极蹬冰,影响肌力发挥;