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.

文章阐述引体向上比反引体向上难做的素,明确做引体向上动作,主要用胸大肌、背阔肌和肱二头肌的肌力,达这些肌肉的肌肉块。