A method used to ensure that, during weight training involving the simultaneous action of two muscles of different strength, both muscles are fully stimulated. Normally, the training would have to stop when the weaker muscle becomes fatigued, long before the stronger one is fully stimulated. To overcome this problem, a preliminary exercise (called an isolation exercise) is performed using only the stronger muscle so that it is ‘pre-fatigued’. When the two-muscle exercise is performed immediately afterwards, both muscles will have a similar relative strength and will have to work equally hard during the training. The pre-fatigue method is used, for example, before the incline press which involves the pectorals and the weaker triceps. Either dumbbell flyes or cable crossovers are used as the isolation exercise, pre-fatiguing the pectorals.
Subjects: Medicine and Health.