in a chin up- palm supinated, which muscles are the prime movers, stabilizers, and synergists. Is there a difference with a pull-up (palms pronated)? If so, what are the differences? Do as many chin-ups as possible. Which muscles inhibit your ability to perform more repetitions? What does this say about the chin-up as an effective exercise for the latissimus dorsi? List as many variations of pull-ups and chin-ups as possible.