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J Int Soc Sports Nutr. 2017 Feb 7;14:5. doi: 10.1186/s12970-017-0162-2. eCollection 2017.

Effect of low dose, short-term creatine supplementation on muscle power output in elite youth soccer players.

Author information

1
Dirección de Investigación, Universidad Mayor Santiago de Chile; Universidad Santo Tomás, Talca. Chile. Carrera de Educación Física, Santiago de Chile, Chile.
2
Department of Physical Education, North University of Parana, Londrina, Brazil.
3
School of Physical Education, Max Planck Faculty, Indaiatuba, Brazil.
4
Department of Physical Education, Research Group on Metabolism, Nutrition and Strength Training, Curitiba, Brazil.
5
Department of Health and Exercise Science, Appalachian State University, Boone, USA.

Abstract

BACKGROUND:

To determine the effects of a low dose, short-term Creatine monohydrate (Cr) supplementation (0.03 g.kg.d-1 during 14 d) on muscle power output in elite youth soccer players.

METHODS:

Using a two-group matched, double blind, placebo-controlled design, nineteen male soccer players (mean age = 17.0 ± 0.5 years) were randomly assigned to either Cr (N = 9) or placebo (N = 10) group. Before and after supplementation, participants performed a 30s Wingate Anaerobic Test (WAnT) to assess peak power output (PPO), mean power output (MPO), fatigue index (FI), and total work.

RESULTS:

There were significant increases in both PPO and MPO after the Cr supplementation period (P ≤ 0.05) but not the placebo period. There were also significant increases in total work, but not FI, after the Cr supplementation and placebo periods (P ≤ 0.05). Notably, there were differences in total work between the Cr and placebo groups after (P ≤ 0.05) but not before the 14 d supplementation period.

CONCLUSION:

There is substantial evidence to indicate that a low-dose, short-term oral Cr supplementation beneficially affected muscle power output in elite youth soccer players.

KEYWORDS:

Anaerobic performance; Creatine supplementation; Wingate test

PMID:
28190980
PMCID:
PMC5296953
DOI:
10.1186/s12970-017-0162-2
[Indexed for MEDLINE]
Free PMC Article

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