Effects of Pre-Workout Multi-Ingredient Supplement on Anaerobic Performance: Randomized Double-Blind Crossover Study.

Piotr Kaczka,Kinga Humińska-Lisowska,Artur Płonka,Tomasz Zając,Monika Michałowska-Sawczyn,Marcin Maciejczyk,Marta Przydział,Paweł Cięszczyk,Amit Batra,Katarzyna Kubicka,Iwona Pezdan-Śliż,Agata Rzeszutko-Bełzowska

doi:10.3390/ijerph17218262

Abstract

Background: The purpose of this research was to investigate the acute effects of a pre-workout supplement on anaerobic performance in resistance-trained men. Methods: Twenty-three men underwent three randomized, double-blind testing sessions separated by a seven-day break. The participants performed three tests: isokinetic strength, three repetition maximum (3-RM) strength and Wingate. Statistical analysis was conducted in R environment. Linear mixed models were estimated via R package lme4. Results: Mean T@0.2 s was significantly greater in supplemented condition for right and left knee flexors (PL: 103.2 ± 37.6 Nm; supplemented condition: 131.8 ± 29.3 Nm (p = 0.001)), and PL: 103.7 ± 39.3; supplemented condition: 129.4 ± 28.4 (p = 0.001)). T@0.2 s for right and left knee extensors (PL: 202.6 ± 58.6 Nm; supplemented condition: 237.2 ± 54.7 Nm (p = 0.001); PL: 203.3 ± 63.2 Nm, supplemented condition: 229.8 ± 50.8 Nm (p = 0.002)). Significant difference was in mean anaerobic power between supplemented and PL condition for right and left knee flexors (p = 0.002, p = 0.005) and for right and left knee extensors (p = 0.001 and p = 0.002). TTP was significantly shorter in supplemented condition for both sides knee flexors (p = 0.002). There was a significant difference for mean power in the Wingate test (placebo: 8.5 ± 0.6 W/kg; supplemented condition: 8.7 ± 0.5 W/kg (p = 0.038)). Mean 3-RM was significantly greater in supplemented condition (p = 0.001). Conclusions: The supplement significantly improves upper and lower body strength and power output in resistance-trained men.

Highlights

The physiological effect of a training session is dependent upon the quality of the work undertaken; athletes constantly search for methods to enhance the training outcome.Int
Significant difference was observed for the right leg (** p = 0.001) and left leg (* p = 0.002) and (B) for the right and left knee flexors
Significant difference was observed for the right leg (** p = 0.002) and left leg (* p = 0.002) and (B) for the right and left knee extensors

Summary

Introduction

The physiological effect of a training session is dependent upon the quality of the work undertaken (general information); athletes constantly search for methods to enhance the training outcome.Int. Results: Mean T@0.2 s was significantly greater in supplemented condition for right and left knee flexors (PL: 103.2 ± 37.6 Nm; supplemented condition: 131.8 ± 29.3 Nm (p = 0.001)), and PL: 103.7 ± 39.3; supplemented condition: 129.4 ± 28.4 (p = 0.001)). Significant difference was in mean anaerobic power between supplemented and PL condition for right and left knee flexors (p = 0.002, p = 0.005) and for right and left knee extensors (p = 0.001 and p = 0.002). TTP was significantly shorter in supplemented condition for both sides knee flexors (p = 0.002). There was a significant difference for mean power in the Wingate test (placebo: 8.5 ± 0.6 W/kg; supplemented condition: 8.7 ± 0.5 W/kg (p = 0.038)). Conclusions: The supplement significantly improves upper and lower body strength and power output in resistance-trained men

Objectives

Methods

Results

Discussion

Conclusion