It is mainly used to develop the anterior deltoid muscles of the shoulder.
[1] The standing version was once a component of the sport of Olympic weightlifting as part of the clean and press movement, but was removed in 1972 due to difficulties in judging proper technique.
[2] The lift is set up by taking either a barbell, a pair of dumbbells or kettlebells, and holding them at shoulder level.
[4] Other variations of the exercise include the push press, a similar movement that involves an additional dipping motion in the legs to increase momentum.
[1] An overhead press may also be performed unilaterally, with the lift being performed one handed; or in an alternating fashion with both hands holding a dumbbell or kettlebell, and then pressing with one arm and then the other.