Effects of Caffeine-based Supplement on Physical Performance

The aim of our study was to determine the acute effects of commercially available multi-ingredient pre-workout supple-ment (MIPS) containing: beta-alanine, taurine, caffeine, L-tyrosine, and cayenne pepper (capsai-cin) on physical performance in untrained men. The aerobic and anaerobic capacity was determined after ingestion of MIPS. A randomized, crossover, single-blind design was used to evaluate the effects of the dietary supplement on physical performance. The participants performed the exercise test twice, in random order: as a control test and after supplement administration (MIPS). The measurements took place over two consecutive days. Somatic measurements were taken on the same day that the first all-out test was performed. Twelve young healthy men, without medical contraindications to supramaximal and maximal intensity exercise, participated in the study. The exercise tests took place under medical supervision.

Inclusion criteria

lack of neuromuscular and musculoskeletal disorders; no medication nor dietary supplements used within the previous month which could potentially affect the study outcomes and self-described good health status. An additional inclusion criterion was the small amount of caffeine consumed per day, i.e. only one caffeinated coffee drink per day or less.

Exclusion criteria

consumption of energy drinks