The physiological and psychological performance effects of multi-ingredient pre-workout supplements in females during resistance training

<p>In recent years, the use of supplements to aid resistance training performance has increased, particularly through the consumption of multi-ingredient pre-workout supplements (MIPS). However, limited research exists regarding the efficacy of MIPS on physiological and psychological performance in resistance-trained females.</p> <p>PURPOSE: To determine the physiological and psychological performance effects of MIPS compared to a placebo and caffeine-only supplement in resistance-trained females.</p> <p>METHODS: Resistance-trained females (n=10) volunteered for the study. One-repetition maximum (1RM) was established at baseline for leg press (LP) and bench press (BP). A within-groups, double-blind, randomized, and counterbalanced design was used to assign the four supplement drinks (i.e., placebo, caffeine-only, single MIPS dose, and double MIPS dose). Following a progressive-load warm-up, participants completed repetitions to failure at 75% of 1RM for LP and BP. Participants completed questionnaires to assess rating of perceived exertion (RPE), rating of fatigue (ROF), and exercise enjoyment. Data were analyzed using one-way repeated measures ANOVA with an alpha level set at .05. RESULTS: There were no differences in repetitions to failure (LP: p = .44; BP: p = .54), RPE (LP: p = .08; BP: p = .70), ROF (LP: p = .09; BP: p = .86), or exercise enjoyment (LP: p = .67; BP: p = .88) across the four supplements. CONCLUSIONS: Our findings suggest that caffeine or MIPS consumption may not delay muscular failure or enhance subjective feelings of exertion in resistance-trained females. Future research should explore timing of MIPS, long-term use, and ingredients to determine the ergogenic benefit for resistance-trained females.</p>

Name thesis:degree_name

Master of Science (MS) in Wellness and Movement Sciences

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Wellness and Movement Sciences

Year

2023

Author dc:creator

• Snyder, Mariah L.

• Exercise Physiology
• Exercise Science
• Health Psychology

Statement dc:rights

• Access is available to all users

Repository record dc:identifier

https://dc.ewu.edu/theses/886

OAI identifier oai:identifier

oai:dc.ewu.edu:theses-1886