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Date Permissions Signed

5-9-2017

Date of Award

Spring 2017

Document Type

Masters Thesis

Degree Name

Master of Science (MS)

Department

Health and Human Development

First Advisor

Buddhadev, Harsh H. (Harsh Harish)

Second Advisor

Brilla, Lorraine R., 1955-

Third Advisor

Chalmers, Gordon R.

Abstract

Creatine supplementation is recommended to improve repetitive sprint cycling performance. Creatine absorption is increased in the presence of electrolytes. The purpose of this study was to investigate the effect of creatine-electrolyte (CE) supplementation on peak power and total work performed during repeated cycling sprints. Peak power and total work performed by 38 cyclists (CE group: n = 17; 23.4 ± 4.0 years; placebo (P) group: n = 18; 23.4 ± 4.0 years) were measured on a Velotron cycle ergometer as they completed five 15-s cycling sprints with two minutes of recovery between sprints. Participants’ body composition was estimated using three site skinfold measurements. Mixed-model ANOVAs were used for statistical analyses. A supplement-time interaction showed a 4% increase in peak power (27 W; p = 0.025) and a 5% increase in total work (1862 J; p = 0.023) from pre- to post-supplementation for the CE group. For the P group, no differences were observed in these variables from pre- to post-testing. Fat free mass increased by 2% (1.4 kg; p = 0.001) for the CE group, whereas no differences were found for the P group. For the CE group, a strong association (r = 0.626; p = 0.007) was observed between the increases in peak power and fat free mass. A CE supplement improves repeated short duration cycling sprint performance when sprints are interspersed with adequate recovery periods. Additionally, the ergogenic effect of CE supplement is associated with an increase in fat free mass.

Type

Text

DOI

https://doi.org/10.25710/erhj-vm47

Publisher

Western Washington University

OCLC Number

987459046

Subject – LCSH

Creatine--Physiological effect; Electrolytes--Physiological effect; Body composition; Cycling

Format

application/pdf

Genre/Form

masters theses

Language

English

Rights

Copying of this document in whole or in part is allowable only for scholarly purposes. It is understood, however, that any copying or publication of this thesis for commercial purposes, or for financial gain, shall not be allowed without the author's written permission.

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