Among them high bars, a weight of institutions to suspension set to pull to increase the safety of spring, kick institutions and lie push frame agencies are bolts of hang dumbbell or stem of the bell.
2
为了增加效果,练习的时候可以在腰上绑一个杠铃片或者用脚踝夹个哑铃。
For added benefit, tie a weight plate around your waist or grasp a dumbbell between your ankles or knees while performing this exercise.