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Motor performance in sustained multiple weight exercises to concentric failure

The aim of this study was to analyze the number of repetitions to concentric failure sustained in multiple sets of weight exercises. Three sets of 1-RM were performed by 17 men (28.0 ± 5.1 years) in bench press, squat, arm curl, leg extension, and leg curl exercises, with rest period of 2-min between sets and 5-min between exercises. A larger number of total repetitions (p < 0.05) was identified in multiple-joint (33 repeats) compared to single-joint exercises (24 to 28 repetitions). A significant reduction in performance (p < 0.05) was found between the first and second set (28 to 35) and between the second and third set (22 to 36). The results suggest that the motor performance is not sustained in multiple sets the 70% of 1-RM in single- and multiple-joint exercises, with rest periods of 2-min.

strength endurance; muscular fatigue; muscular strength; motor tests


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