Effect of Low Dose, Short-Term Creatine Supplementation on Muscle Power Output in Elite Youth Soccer Players

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

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.

Publication types

  • Randomized Controlled Trial

MeSH terms

  • Adolescent
  • Creatine / administration & dosage*
  • Creatine / pharmacology
  • Dietary Supplements*
  • Double-Blind Method
  • Humans
  • Male
  • Muscle, Skeletal / drug effects
  • Muscle, Skeletal / physiology*
  • Physical Endurance / drug effects
  • Soccer*
  • Sports Nutritional Physiological Phenomena
  • Task Performance and Analysis

Substances

  • Creatine