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Article
Effect of Creatine Phosphate Supplementation on Anaerobic Working Capacity and Body Weight After Two and Six Days of Loading in Men and Women
Journal of Strength and Conditioning Research
  • Joan M. Eckerson
  • Jeffrey R. Stout
  • Geri A. Moore
  • Nancy J. Stone, Missouri University of Science and Technology
  • Kate A. Iwan
  • Amy N. Gebauer
  • Rachelle Ginsberg
Abstract

The purpose of this study was to determine the effects of 2 and 6 days of creatine phosphate loading on anaerobic working capacity (AWC) and body weight (BW) in men and women. Sixty-one men (n = 31) and women (n = 30) randomly received 1 of 3 treatments (4 x 5 g·d-1 x 6 days) using a double blind design: (a) 18 g dextrose as placebo (PL); (b) 5.0 g Cr + 20 g dextrose (Cr); or (c) 5.0 g Cr + 18 g dextrose + 4 g of sodium and potassium phosphates (CrP). AWC was determined at baseline and following 2 and 6 days of supplementation using the Critical Power Test. BW increased significantly over time, and the mean value for the men was significantly greater compared to that for women, but there were no interactions (p > 0.05). There were gender-specific responses for AWC expressed in both absolute values (kJ) and relative to BW (kJ·kg-1), with the women demonstrating no significant interactions. For the men, CrP loading significantly increased AWC following 2 days (23.8%) and 6 days (49.8%) of supplementation vs. PL (kJ and kJ·kg-1). Cr supplementation increased AWC 13-15% in both genders compared to PL (1.1%-3.0% decline); although this result was not statistically significant, it may have some practical significance.

Department(s)
Psychological Science
Keywords and Phrases
  • Critical Power Test,
  • Ergogenic Aids,
  • Gender Difference
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2005 National Strength and Conditioning Association (NSCA), All rights reserved.
Publication Date
1-1-2005
Disciplines
Citation Information
Joan M. Eckerson, Jeffrey R. Stout, Geri A. Moore, Nancy J. Stone, et al.. "Effect of Creatine Phosphate Supplementation on Anaerobic Working Capacity and Body Weight After Two and Six Days of Loading in Men and Women" Journal of Strength and Conditioning Research Vol. 19 Iss. 4 (2005) p. 756 - 763 ISSN: 10648011
Available at: http://works.bepress.com/nancy-stone/2/