Effects of Pre Exhaustion of a Secondary Synergist on a Primary Mover in a Compound Exercise
Subjects have performed the bench press with and without PRE of PM with a dumbbell chest flying exercise (2 dumbbells are simultaneously moved vertically from a position of shoulders horizontally abducted at 90deg to nearly 0deg)[12] Electromyographic (EMG) data were recorded for the pectoralis major (PM) anterior deltoid (DA) and triceps brachii (TB) No significant changes in the tonic control of PM and DA were noted between the two treatment groups, however, TB did have a significantly (p .05) higher motor unit activation when the chest was pre exhausted with a dumbbell chest flying exercise.