The effect of carbohydrate feeding on repeated bouts of anaerobic exercise in pre- and early-pubertal boys

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Authors
Marjerrison, Andrea D.
Advisor
Mahon, Anthony D.
Issue Date
2006
Keyword
Degree
Thesis (M.S.)
Department
School of Physical Education, Sport, and Exercise Science
Other Identifiers
Abstract

The purpose of this study was to examine the effects of pre-exercise carbohydrate feeding on repeated bouts of anaerobic exercise in pre- and early-pubertal boys. Eleven boys, (10.2 ± 1.3 yrs) maturation stage I and II according to Tanner participated in this study. Peak (PP) and mean power (MP) were examined using 4 repeated Wingate Anaerobic Tests (WAnT) bouts. Two double-blind, randomized trials were performed; a carbohydrate (CHO) and placebo (PL) trial. A two-way (trial by time) ANOVA was used to analyze PP, MP, blood glucose, lactate, heart rate (HR) and ratings of perceived exertion (RPE). Statistical significance was set at p < 0.05. PP and MP were not significantly different across trials. Glucose was significantly higher after CHO consumption, but post-exercise responses did not vary between trials. There was no significant trial or time effect and no interaction effect for HR. There was a significant time effect for lactate and RPE. The results suggest that pre-exercise CHO feeding does not enhance anaerobic exercise performance in children, a finding that is similar to outcomes involving adults.

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