Creatine supplementation and its effect on musculotendinous stiffness and performance
Watsford ML, Murphy A, Spinks WL, Walshe AD
Journal of strength and conditioning research · 7 citas
Etiquetas de revisión
Financiación no declaradaDatos neutrales que nuestra revisión registró sobre cómo se hizo este estudio. Describen el método, nunca si nos gusta el resultado.
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
- 2003-01-01 · J Strength Cond Res · vol. 17 · número 1 · pág. 26
- Editorial
- Lippincott Williams & Wilkins
- Citado
- 19 citas · más que el 63% de estudios similares · 0.6× el promedio de su campo
- Referencias
- 34 trabajos
- Acceso
- Acceso abierto (copia en repositorio)
- Áreas de investigación
- Muscle metabolism and nutrition · Sports Performance and Training · Biochemical effects in animals
- Palabras clave
- creatine supplementation, musculotendinous stiffness, triceps surae, jump performance, drop jump, countermovement jump, fluid retention, muscle strain, weight gain, output power
- MeSH
- leg, muscle, skeletal, tendons, humans, creatine, body mass index, muscle contraction, elasticity, dietary supplements, adult, male
4 autores
- Mark Langley Watsford🇦🇺University of Technology Sydney
- Aron J. Murphy🇦🇺University of Technology Sydney
- Warwick L. Spinks🇦🇺University of Technology Sydney
- Andrew D. Walshe🇦🇺University of Technology Sydney
Resumen
El texto original del estudio, en el idioma en que se publicó.
Anecdotal reports suggesting that creatine (Cr) supplementation may cause side effects, such as an increased incidence of muscle strains or tears, require scientific examination. In this study, it was hypothesized that the rapid fluid retention and "dry matter growth" evident after Cr supplementation may cause an increase in musculotendinous stiffness. Intuitively, an increase in musculotendinous stiffness would increase the chance of injury during exercise. Twenty men were randomly allocated to a control or an experimental group and were examined for musculotendinous stiffness of the triceps surae and for numerous performance indices before and after Cr ingestion. The Cr group achieved a significant increase in body mass (79.7 +/- 10.8 kg vs. 80.9 +/- 10.7 kg), counter movement jump height (40.2 +/- 4.8 cm vs. 42.7 +/- 5.9 cm), and 20-cm drop jump height (32.3 +/- 3.3 cm vs. 35.1 +/- 4.8 cm) after supplementation. No increase was found for musculotendinous stiffness at any assessment load. There were no significant changes in any variables within the control group. These findings have both performance- and injury-related implications. Primarily, anecdotal evidence suggesting that Cr supplementation causes muscular strain injuries is not supported by this study. In addition, the increase in jump performance is indicative of performance enhancement in activities requiring maximal power output.
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