Safety of a dose-escalated pre-workout supplement in recreationally active females

Journal of the International Society of Sports Nutrition
Roxanne M VogelJordan R Moon

Abstract

Pre-workout supplements (PWS) have increased in popularity among athletic populations for their purported ergogenic benefits. Most PWS contain a "proprietary blend" of several ingredients, such as caffeine, beta-alanine, and nitrate in undisclosed dosages. Currently, little research exists on the safety and potential side effects of chronic consumption of PWS, and even less so involving female populations. Therefore, the purpose of the present study was to examine the safety of consuming a dose-escalated PWS over a 28-day period among active adult females. 34 recreationally active, adult females (27.1 ± 5.4 years, 165.2 ± 5.7 cm, 68.2 ± 16.0 kg) participated in this study. Participants were randomly assigned to consume either 1 (G1) or 2 (G2) servings of a PWS daily or remain unsupplemented (CRL) for a period of 28 days. All were instructed to maintain their habitual dietary and exercise routines for the duration of the study. Fasting blood samples, as well as resting blood pressure and heart rate, were taken prior to and following the supplementation period. Samples were analyzed for hematological and clinical chemistry panels, including lipids. Significant (p < 0.05) group by time interactions were present for absolute monocy...Continue Reading

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Citations

Feb 28, 2018·International Journal of Sport Nutrition and Exercise Metabolism·Austin T RobinsonShane A Phillips
Oct 18, 2016·Current Opinion in Clinical Nutrition and Metabolic Care·Louise Deldicque, Marc Francaux
Aug 10, 2018·Journal of the International Society of Sports Nutrition·Patrick S HartyAndrew R Jagim
Apr 5, 2019·Journal of Functional Morphology and Kinesiology·Michael Timothy LaneTyler Hurley

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Methods Mentioned

BETA
blood draws

Software Mentioned

Statistica
Statsoft

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