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Effects of caffeine on anaerobic exercise in boys.
MedLine Citation:
PMID:  22728413     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
The effects of caffeine on anaerobic exercise in young boys was investigated. Twenty-four healthy 8-10 year old boys participated in a randomized double-blind, double-crossover, counter-balanced study. Each subject received the caffeinated drink (CAF-5 mg · kg-1) or placebo (PL) twice each on four separate visits. Sixty minutes following ingestion of either CAF or PL boys performed a static hand-grip test and then a Wingate test. Reliability was moderately high for the Wingate test (R = .70-0.95). Hand-grip reliability was higher for CAF (R = .88) than PL (R = .52). Mean power (180 ± 36 vs 173 ± 28 W) was significantly higher (p < .05) in CAF versus PL, respectively. There were no differences in peak power or static hand-grip maximal voluntary contraction with CAF. Further, peak HR (190 ± 10 vs 185 ± 10 beats · min-1) was significantly higher in CAF versus PL, respectively. Thus, in this study a moderately high dose of CAF significantly increased the average power during a Wingate test, yet it does not affect peak power or static hand-grip strength.
Authors:
Kenneth R Turley; Joey D Rivas; Jeremey R Townsend; Aaron B Morton; Jason W Kosarek; Mark G Cullum
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Pediatric exercise science     Volume:  24     ISSN:  1543-2920     ISO Abbreviation:  Pediatr Exerc Sci     Publication Date:  2012 May 
Date Detail:
Created Date:  2012-06-25     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8909729     Medline TA:  Pediatr Exerc Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  210-9     Citation Subset:  IM    
Affiliation:
Human Performance Laboratory, Dept. of Exercise and Sport Sciences, Harding University, Searcy, AR.
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