The effects of low-dose creatine supplementation versus creatine loading in collegiate football players

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Bibliographic Details
Title translated into German:Die Auswirkungen gering dosierter Kreatinsupplementierung gegenüber hoher Kreatinzufuhr bei College-Footballspielern
Author:Wilder, Nathan; Deivert, Richard G.; Hagerman, Frederick; Gilders, Roger
Published in:Journal of athletic training
Published:36 (2001), 2, S. 124-129, Lit.
Format: Publications (Database SPOLIT)
Publication Type: Journal article
Media type: Electronic resource (online) Print resource
Language:English
ISSN:1062-6050, 0160-8320, 1938-162X
Keywords:
Online Access:
Identification number:PU201101000759
Source:BISp

Abstract

Objective: To compare the effects of low doses of creatine and creatine loading on strength, urinary creatinine concentration, and percentage of body fat. Design and Setting: Division IA collegiate football players took creatine monohydrate for 10 weeks during a sport-specific, periodized, off-season strength and conditioning program. One-repetition maximum (1-RM) squat, urinary creatinine concentrations, and percentage of body fat were analyzed. Subjects: Twenty-five highly trained, Division IA collegiate football players with at least 1 year of college playing experience. Measurements: We tested strength with a 1-RM squat exercise before, during, and after creatine supplementation. Percentage of body fat was measured by hydrostatic weighing before and after supplementation. Urinary creatinine concentration was measured via light spectrophotometer at 0, 1, 3, 7, 14, 21, 28, 35, 42, 48, 56, and 63 days. An analysis of variance with repeated measures was computed to compare means for all variables. Results: Creatine supplementation had no significant group, time, or interaction effects on strength, urinary creatinine concentration, or percentage of body fat. However, significant time effects were found for 1-RM squat and fat-free mass in all groups. Conclusions: Our data suggest that creatine monohydrate in any amount does not have any beneficial ergogenic effects in highly trained collegiate football players. However, a proper resistance training stimulus for 10 weeks can increase strength and fat-free mass in highly trained athletes. Verf.-Referat