The effects of acute creatine supplementation on multiple sprint cycling and running performance in rugby players
Ahmun RP, Tong RJ, Grimshaw PN
Journal of strength and conditioning research · 17 citas
Etiquetas de revisión
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Cómo se estudió
- Diseño
- Ensayo controlado aleatorizado (indexado por PubMed)
- Estudiado en
- Personas
- Resultado principal
- Marcadores de salud y funcionamiento
Quién lo pagó
- Financiación
- Financiación no declarada
Publicación
- Publicado
- 2005-01-01 · J Strength Cond Res · vol. 19 · número 1 · pág. 92
- Editorial
- Lippincott Williams & Wilkins
- Citado
- 40 citas · más que el 67% de estudios similares · 0.7× el promedio de su campo
- Referencias
- 0 trabajos
- Acceso
- De pago
- Áreas de investigación
- Muscle metabolism and nutrition · Sports Performance and Training · Biochemical effects in animals
- Palabras clave
- creatine supplementation, acute supplementation, rugby players, sprint performance, cycling performance, Wingate test, 40 m sprint, output power, fatigue index, body mass, fat mass, high-intensity exercise
- MeSH
- muscle, skeletal, humans, creatine, exercise test, cross-over studies, double-blind method, psychomotor performance, body composition, muscle fatigue, football, dietary supplements, adult, male
3 autores
- Robert Ahmun🇬🇧Cardiff Metropolitan University
- Richard J. Tong🇬🇧Cardiff Metropolitan University
- PAUL N. GRIMSHAW🇦🇺University of South Australia
Resumen
El texto original del estudio, en el idioma en que se publicó.
The benefits of creatine (CR) supplementation are well documented, particularly during repeated bouts of high-intensity muscular activity. Most published experiments use mass-supported (cycle ergometry) activities as a means of evaluating creatine's efficacy, therefore minimizing any possible adverse effects of increased body mass associated with CR supplementation. This study aims to use both mass-supported and mass-dependent activities to assess the effectiveness of acute CR supplementation on a group of highly trained rugby players. A randomized, double-blind, crossover research design was utilized, with subjects receiving 20 g.d(-1) x 5 d of both CR and a glucose placebo (PL). Subjects were assessed via 10 x 6-second Wingate test and a 10 x 40-m sprint test on separate days, presupplementation and postsupplementation. A 28-d washout period separated the two treatments. No significant treatment (p > 0.05) or treatment by test interaction effects (p > 0.05) were observed for peak or minimum power output (W), peak or minimum running velocity (m.s(-1)), or fatigue index (%). No significant differences (p > 0.05) were found postsupplementation for body mass and percentage body fat. Although statistical significance was not achieved for any of the measured parameters, there were small improvements in performance that may be of benefit to rugby players.
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