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.

文章阐述了正握引体向上比反握引体向上难,确了引体向上动作,主要用来发展胸大肌、背阔肌和肱二头肌肌力,发达这些肌肉肌肉块。