Introduction: Regular practice of resistance training offer positive results on muscular and physical performance. Thus, some strategies have been developed to influence the increase of performance results. Therefore, the objective of this study was to verify the influence of music, placebo supplementation and biofeedback on the number of executions and total volume, as well as the myoelectric activity of the pectoralis major muscles and triceps brachii. Methods: Men between 18 and 40 years of age, practicing and not practicing bodybuilding, were selected for convenience. Data recording was performed in four different conditions: a. Without intervention, b. Placebo intervention, c. Music and d. Biofeedback. As for the variables, the number of repetitions, total load and myoelectric activity of the evaluated muscles were measured. Results: A significant increase in the number of repetitions (p = 0.008) and total load (p = 0.001) with music application was observed, although the condition biofeedback also significantly influenced (p < 0.05) the total load (p = 0.005). Conclusion: It was verified with this study that music and biofeedback increased the total load and only the music increased the number of repetitions. However, there was no change in myoelectric activity.