King Grub
2018-02-06, 12:13
This study examined the acute effects of a multi-ingredient pre-workout supplement on: 1) total, lower, and upper body volume of resistance exercise; and 2) the subsequent lower body strength (isokinetic leg extension and flexion), lower (vertical jump [VJ] height), upper body power (bench-throw velocity [BTv]), and cycle ergometry performance (critical power [CP] and anaerobic work capacity [AWC]). Twelve men completed baseline strength and power measures prior to two experimental visits, supplement (SUP) and placebo (PL). The experimental visits involved a fatiguing cycling protocol 30 min after ingestion of the SUP or PL and 15 min prior to the beginning of the resistance exercise protocol, which consisted of 4 upper and 4 lower body resistance exercises performed for 4 sets to failure at 75% 1RM. The exercise volume for the total, lower, and upper body was assessed. The VJ height and BTv were measured immediately following the resistance exercise. Post-exercise isokinetic leg extension and flexion strength was measured 15 minutes after completion of a second cycling protocol. There was a 9% increase in the total body volume of exercise and a 14% increase in lower body volume of exercise for the SUP compared to the PL, with no effect on exercise volume for the upper body between the SUP and PL. The increased lower body volume for the SUP did not result in greater lower body strength and power performance decrements after exhaustive exercise, compared with the PL. These findings suggested the potential for the SUP to increase resistance exercise volume, primarily related to an increased lower body volume of exercise.
J Strength Cond Res. 2018 Feb 1. Examination of A Multi-Ingredient Pre-Workout Supplement on Total Volume of Resistance Exercise and Subsequent Strength and Power Performance.
J Strength Cond Res. 2018 Feb 1. Examination of A Multi-Ingredient Pre-Workout Supplement on Total Volume of Resistance Exercise and Subsequent Strength and Power Performance.