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

Area of Science:

• Exercise Physiology
• Sports Nutrition
• Human Performance

Background:

• Investigating the acute effects of pre-workout supplements is crucial for understanding their impact on athletic performance.
• Resistance-trained individuals often seek ergogenic aids to enhance their training outcomes.

Purpose of the Study:

• To examine the acute effects of a specific pre-workout supplement on anaerobic performance metrics in resistance-trained men.
• To determine if supplementation influences measures of strength, power, and anaerobic capacity.

Main Methods:

• A randomized, double-blind, placebo-controlled study involving 23 resistance-trained men.
• Participants completed isokinetic strength tests, a three-repetition maximum (3-RM) test, and a Wingate anaerobic power test.
• Data analysis utilized linear mixed models in the R statistical environment.

Main Results:

• The pre-workout supplement significantly increased peak torque (T@0.2s) in knee flexors and extensors.
• Mean anaerobic power and mean power output during the Wingate test were significantly improved with supplementation.
• A significant increase in mean three-repetition maximum (3-RM) strength was observed in the supplemented condition.

Conclusions:

• The pre-workout supplement demonstrated significant improvements in both upper and lower body strength and power output.
• These findings indicate that the supplement is an effective ergogenic aid for enhancing anaerobic performance in resistance-trained men.