A person performing apull-up with anarrowsupine grip. It is also chin-up since the chin reaches the bar. This is the form most commonly associated with "chin" up due to it being the easiest way of pulling this high.Person doing a pull-up with awideprone grip. It is also achin-up since the chin reaches the bar. Bringing the chin up is more difficult with wider prone grips, so it is not as frequently associated with chinning.
Fromchin +up, but not a deverbal, unlikepull-up. Thechin-up and themuscle-up as variations of pulling oneself upward were named later than thepull-up, with influence from its name.
(weightlifting)(US) Anexercise done for strengthening thearms andback, in which one lifts one's ownweight while hanging from abar. It can be defined more restrictively on criteria like the arms starting at lock-out, or the chin requiring contact with the bottom of the bar, or touching the neck to the bar. Palms may be facing in any direction.
Compare the actions of the humerus during the performance of achin-up with supinated grip with those during the performance of achin-up with pronated grip. Are thechin-ups alike or different with respect to muscle involvement?
