Originally posted by automaton89
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'A showed some differences that were new to me, and may influence our choice between the pull up and chin up exercises.
The authors compared EMG activity of several muscle groups during both the pull up and chin up in 25 healthy subjects. Both exercises showed significant involvement of the latissimus dorsi, ranging from 117-130% MVIC, obviously. The chin up, as expected, had significantly higher biceps activity, however, the chin up also had significantly higher pectoralis major activity.
The pull up did have one advantage in regard to the EMG activity. Lower t****zius activity was significantly higher in the pull up versus the chin up.'
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