Auxiliary An optional exercise that may supplement a basic exercise . Auxiliary exercises may place greater relative intensity on a specific muscle or a head of a muscle. Compound An exercise that involves two or more joint movements. Isolated An exercise that involves just one discernible joint movement. An exercise in which the end segment of the exercised limb is fixed, or the end is supporting the weight.
Most compound exercises are closed chain movements.
An exercise in which the end segment of the exercised limb is not fixed, or the end is not supporting the weight. Most isolated exercise are open chain movements. Push Movement away from center of body during the concentric contraction of the target muscle . Isolated movements are classified by their compound counterparts. Pull Movement toward center of body during the concentric contraction of the target muscle .