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做的因素,明确了做引体向上动作,主要用来发展胸大肌、阔肌和肱二头肌的肌力,发达这些肌肉的肌肉块。