title: Repeated sprint ability is not enhanced by caffeine, arginine, and branched-chain amino acids in moderately trained soccer players.
abstract: The aim was to investigate the effect of a dietary supplementation on the repeated sprint ability (RSA) performance in recreationally trained team sports athletes. Twelve young men underwent a RSA exercise protocol in five trials, in which participants ingested carbohydrates (CHO) plus caffeine (Caf), CHO plus arginine (Arg), CHO plus branched-chain amino acids (BCAA), CHO plus Caf, Arg, and BCAA (ALL), and CHO only. Heart rate, oxygen saturation, hematic lactate, ratings of perceived exertion, average sprint time, total time, best sprint time, peak power, and average power were taken. Data revealed no significant effects neither on physiological nor performance parameters with any of the supplements.
authors.affiliation: Sport and Exercise Medicine Division, Department of Medicine, University of Padova, Padova, Italy.
authors.forename: Andrea
authors.initials: A
authors.lastname: Ermolao
authors.affiliation: School of Health Sciences, Queen Margaret University, Edinburgh, United Kingdom.
authors.forename: Tobia
authors.initials: T
authors.lastname: Zanotto
authors.affiliation: Sport and Exercise Medicine Division, Department of Medicine, University of Padova, Padova, Italy.
authors.forename: Nicolò
authors.initials: N
authors.lastname: Carraro
authors.affiliation: Sport and Exercise Medicine Division, Department of Medicine, University of Padova, Padova, Italy.
authors.forename: Tommaso
authors.initials: T
authors.lastname: Fornasier
authors.affiliation: Sport and Exercise Medicine Division, Department of Medicine, University of Padova, Padova, Italy.
authors.forename: Marco
authors.initials: M
authors.lastname: Zaccaria
authors.affiliation: Sport and Exercise Medicine Division, Department of Medicine, University of Padova, Padova, Italy.
authors.forename: Daniel
authors.initials: D
authors.lastname: Neunhaeuserer
authors.affiliation: Sport and Exercise Medicine Division, Department of Medicine, University of Padova, Padova, Italy.
authors.forename: Marco
authors.initials: M
authors.lastname: Bergamin
keywords: Dietary supplements; Nutrition; Performance; Team sport