Before revision: Narrow, shoulder-width dips primarily train the triceps , with major synergists being the anterior deltoid, the pectoralis muscles (sternal, clavicular, and minor), and the rhomboid muscles of the back (in that order).
After revision: Narrow, shoulder-width dips only train the tricep , with major synergists being the anterior deltoid, the pectoralis muscles (sternal, clavicular, and minor), and the rhomboid muscles of the back (in that order).