The Effect of Shoulder Stability Exercises on Bench Press One-repetition Maximum Results
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The purpose of this investigation was to determine whether the performance of shoulder stability exercises prior to a bench press 1-repetition-maximum (1RM) protocol would improve strength results. Sixteen males whom were previous or current collegiate athletes, or competitive lifters participated in 3 testing sessions separated by a minimum of 48 hours. During each testing session, a 1RM protocol was performed on the bench press. After a general warm-up, subjects performed the 1RM protocol that consisted of submaximal sets with increasing loads prior to attempting the 1RM lifts. The testing protocols were performed in a randomized order, including the standard (SD) 1RM, or either high or low intensity shoulder-stability exercises before the 1RM protocol. The exercises consisted of a push-up plus, body row, press-up, a full-can raise, and internal and external rotations. During the light-intensity trial (L+SD), a Total Resistance Exercise Suspension Trainer (TRX) was used to raise the level of instability, while a weight-vest was used to increase the intensity of the high-intensity trial (H+SD). Analysis of the data exhibited no significant differences between the three trials (P=0.852). Regardless of the statistical insignificance, the inclusion of various forms of instability have shown increases in muscle activation, therefore, future research should investigate the possibilities of a TRX suspension trainer making its way into strength and conditioning, and/or rehabilitation programs.