The long-term effects of a multi-ingredient pre-workout supplement on exercise performance in active females

Abstract

Multi-ingredient pre-workout supplements (MIPS) are popularly used to enhance exercise performance, but little is known regarding the long term effects. Further, limited data are available in female populations. Therefore, the purpose of this study was to examine the long-term effects of a MIPS on training adaptations in active females. Nineteen females participated in a randomized, double-blind, placebo controlled study. Participants completed a seven-week strength training program and followed dietary recommendations. Subjects reported to the laboratory for identical baseline and post-training testing sessions. Lower body power was assessed using a counter-movement vertical jump. Upper body and lower body strength were assessed by one-repetition maximum (1 RM) on the bench press and leg press. Muscular endurance tests were assessed on the bench press and leg press by performing a set to failure at 75% of calculated 1 RM. Both groups showed significant improvement in upper body strength (p=0.00) and lower body strength (p=0.00), but were not significantly different from each other for upper body (p=0.74) or lower body (p=0.53). There were no significant improvements for lower body power (p=0.86), upper body endurance (p=0.39), or lower body endurance (p=0.37). In conclusion, this study suggests that consumption of a MIPS does not significantly influence training adaptations.