The article explains the morphology factor of chinning in combined grip. It points out that chinning movement can well-developed muscles such as pectoralis major, latissimus dorsi and biceps brachii.
文章阐述了正引体向上引体向上难做因素,明确了做引体向上动作,主要用发展胸大、背阔和肱二头力,发达这些块。