title: The effect of pre-exercise carbohydrate supplementation on anaerobic exercise performance in adolescent males.
abstract: Carbohydrate (CHO) consumption before anaerobic exercise was studied in 13 adolescent boys (15.2 ± 0.9 yrs). A within subjects design was employed where subjects consumed a 22% CHO or volume-matched placebo (PL) beverage 30-min before anaerobic exercise on two separate days. Exercise consisted of a Wingate Anaerobic Test (WAnT), ten by 10-s-sprints, and a second WAnT. Fatigue index and peak power (PP) were similar while mean power (MP) was higher (p < .025) in CHO trial; however this difference was ascribed to initial WAnT performance. PP and MP for the 10-s sprints were similar between trials. Intravenous blood glucose and insulin concentrations were higher (p < .05) in the CHO trial while lactate and catecholamine concentrations were similar. Improved performance on a single WAnT was apparent with CHO consumption before exercise; however, this strategy did not attenuate fatigue over time in adolescent boys.
authors: Human Performance Laboratory, Ball State University, Muncie, IN, USA.
authors: Jonah D
authors: JD
authors: Lee
authors: Lauren E
authors: LE
authors: Sterrett
authors: Lisa M
authors: LM
authors: Guth
authors: Adam R
authors: AR
authors: Konopka
authors: Anthony D
authors: AD
authors: Mahon
mesh_terms: D000293:Adolescent; D015308:Anaerobic Threshold / Q000502:physiology*; D000704:Analysis of Variance; D001786:Blood Glucose; D004040:Dietary Carbohydrates / Q000008:administration & dosage* / Q000378:metabolism / Q000627:therapeutic use; D019587:Dietary Supplements; D005080:Exercise Test; D006339:Heart Rate; D006801:Humans; D007328:Insulin / Q000097:blood; D008297:Male; D012420:Running / Q000502:physiology*; D013647:Task Performance and Analysis; D013997:Time Factors
chemical_list: D001786:Blood Glucose; D004040:Dietary Carbohydrates; D007328:Insulin