摘要：Rodrigues B, Maior AS, Sakugawa R, Bezerra E. Acute Effects ofFixed Rest Time during Multiple Sets on Upper Limbs Performance.JEPonline 2018;21(3):86-93. This study analyzed the acute effectsof a 2-min rest interval on range of motion (ROM), blood lactate, andmyoelectric activation (sEMG). Ten healthy resistance-trained menparticipated in the experimental protocol. Previously, they performedtest and retest of 10RM (repetition maximum) on bench press (BP).After 48 hrs, the myoelectric activation on upper trunk and armmuscles; ROM elbow flexion; and blood lactate level were monitoredbefore, during, and after 3 sets of BP with a 2-min rest intervalbetween sets. Triceps brachii sEMG showed a decrease in set 2 andset 3 when compared to set 1 (P<0.05). Rectus abdominis sEMGincreased in set 3 when compared to sets 1 and 2 (P<0.05). Therewere no significant differences on myoelectric activity for thepectoralis major and anterior deltoid between sets (P>0.05) andphases (P>0.05), respectively. Elbow flexion showed a higher ROMduring set 1 when compared to sets 2 and 3 (P<0.05). Elbowextension showed no significant difference between sets (P>0.05).Blood lactate showed increase over the periods (set 3> set 2> set 1>rest, P<0.05). Absolute load volume was lower in set 3 in relation toset 2 and set 1 (P<0.05). We conclude that the fixed interval of 2 minis not sufficient to control for reduction in performance during benchpress with load of 10RM. Thus, we suggest a rest time >2 min forbetter performance in this specific exercise for multiple sets.
关键词：Electromyography;Kinematic;Resistance Training
