To optimize/maximize increases on muscle strength and mass in well resistance-trained individuals, the use of resistancetraining (RT) systems have been widely recommended by powerlifters, bodybuilders and coaches. These systems may be characterized as advanced techniques that manipulate specific RT variables emphasizing physiologic mechanisms. However, there is a lack of evidence on literature supporting the advantages of RT systems on muscle strength and mass increases compared with traditional RT performed with constant sets, repetitions and load. It is possible that these equivocal findings are associated with methodological limitations that preclude the correct interpretation of the results. Therefore, the purpose of the present review article was to critically analyze studies and draw conclusions on the effects of RT systems on muscle strength and mass enhancements. The evidence available so far does not allow the determination of wheter RT systems can optimize/maximize increases in muscle strength and mass when compared to traditional RT.
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