Strength performance parameters when adopting different exercise sequences during agonist-antagonist paired sets

Objective: To investigate the effect of different exercise sequences during agonist-antagonist paired sets on training volume, ratings of perceived exertion, and muscle activation.

Material and methods: Thirteen recreationally trained males participated in this study. Two protocols were adopted in two non-consecutive days. BS — participants performed three repetition to failure sets (with 8 repetition maximum loads) of bench-press (BP) followed by seated row exercise in alternate manner. SB — the seated row (SR) was performed before bench press. Two-minute rest interval was adopted between sets and exercises. The number of repetitions and electromyography signals of the posterior deltoids (PD), biceps brachii (BB), pectoralis major (PM), and triceps brachii (TB) muscles were recorded during both exercises.

Results: No significant differences were noted in training volume (1486.6 ± 200.3; 1492 ± 282.5) and total work (22.3 ± 1.3; 22 ± 2) BS and SB sequences for BP, respectively. Higher training volume (1709.7 ± 177.6; 1424.4 ± 196) and total work (25.3 ± 1.8; 21 ± 1.6) were noted for SR under BS compared to SB. Higher PD activation was noted during SR under BS compared to SB.

Conclusion: The exercise sequence showed significant differences in strength performance and agonist muscle activation during agonist-antagonist paired sets for SR exercise. These results suggest that antagonist pre-loading may have a potential effect on back muscles.