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The Effects of Creatine Supplementation on High-Intensity Exercise Performance in Elite Performers

Citation

McNaughton, LR and Dalton, BS and Tarr, JE, The Effects of Creatine Supplementation on High-Intensity Exercise Performance in Elite Performers, European Journal of Applied Physiology, 78, (3) pp. 236-240. ISSN 0301-5548 (1998) [Refereed Article]

DOI: doi:10.1007/s004210050413

Abstract

The aim of this research was to determine whether creatine supplementation at a dose of 20 g.day -1, given in 4 x 6-g doses (5 g creatine monohydrate and 1 g glucose) for 5 days, was effective in improving kayak ergometer performances of different durations. Sixteen male subjects with the following characteristics [mean (SEM)]: age 21 (1.2) years, height 170.2 (1.7) cm, weight 75.3 (2.3) kg, Σ8 skinfolds 59.3 (2.6) mm, and maximal oxygen consumption 67.1 ± (4.3) ml.kg.min -1, undertook three maximal kayak ergometer tests of 90, 150 and 300 s duration on a wind-braked kayak ergometer (CON). Two groups were then randomly formed, with one group taking the supplement (SUP) while the other took a placebo (PLAC). No pre-test differences existed between the SUP and the PLAC groups in any of the variables measured. After supplementation each group then repeated the same kayak ergometer tests as performed previously and after a 4-week 'washout period' the groups took either the PLAC or SUP for another 5 days and then completed the final tests. The SUP group completed significantly more work than either the CON or PLAC groups in all of the tests (90 s, P < 0.01; 150 s, P < 0.001; 300 s, P < 0.05). Body mass remained stable throughout the test period in both the CON and PLAC groups, but both were significantly less than the SUP body mass of 77.3 (1.0) kg (P < 0.01). The results of this work indicate that creatine supplementation can significantly increase the amount of work accomplished during kayak ergometer performance at durations ranging from 90 to 300 s.

Item Details

Item Type:Refereed Article
Research Division:Medical and Health Sciences
Research Group:Medical Physiology
Research Field:Systems Physiology
Objective Division:Cultural Understanding
Objective Group:Arts and Leisure
Objective Field:Organised Sports
Author:Dalton, BS (Mr Brad Dalton)
Author:Tarr, JE (Mrs Janine Tarr)
ID Code:15418
Year Published:1998
Web of Science® Times Cited:38
Deposited By:Secondary and Post-Compulsory Education
Deposited On:1998-08-01
Last Modified:2011-08-10
Downloads:0

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