Effect of creatine loading on anaerobic performance and skeletal muscle volume in NCAA Division I athletes
Ziegenfuss TN, Rogers M, Lowery L, Mullins N, Mendel R, Antonio J, Lemon P
Nutrition (Burbank, Los Angeles County, Calif.) · 35 citas
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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
- 2002-05-01 · Nutrition · vol. 18 · número 5 · págs. 397–402
- Editorial
- Elsevier BV
- Citado
- 81 citas · más que el 77% de estudios similares · 1.3× el promedio de su campo
- Referencias
- 41 trabajos
- Acceso
- De pago
- Áreas de investigación
- Muscle metabolism and nutrition · Sports Performance and Training · Biochemical effects in animals
- Palabras clave
- creatine supplementation, creatine loading, anaerobic performance, repeated sprint performance, thigh muscle volume, skeletal muscle volume, power athletes, sex differences, peak power, weight gain
- MeSH
- thigh, muscle, skeletal, humans, creatine, placebos, magnetic resonance imaging, exercise test, exercise, administration, oral, double-blind method, anaerobiosis, sex characteristics, dietary supplements, adult, female, male
7 autores
- Tim N. Ziegenfuss🇺🇸 · autor de correspondenciaKent State University
- Michael Rogers🇺🇸Kent State University
- Lonnie Michael Lowery🇺🇸Kent State University
- Nicole M. Mullins🇺🇸Kent State University
- Ronald W. Mendel🇺🇸Kent State University
- José António
- Peter W.R. Lemon🇨🇦Western University
Resumen
El texto original del estudio, en el idioma en que se publicó.
Objective
We measured the effect of 3 d of creatine (Cr) supplementation on repeated sprint performance and thigh muscle volume in elite power athletes.
Methods
Ten male (mean +/- standard deviation of body mass and percentage of fat (81.1 +/- 10.5 kg and 9.8 +/- 3.5) and ten female (58.4 +/- 5.3 kg and 15.0 +/- 3.4) athletes were matched for sex and 10-s cycle sprint scores, paired by rank, and randomly assigned to the Cr or placebo (P) group. Subjects completed six maximal 10-s cycle sprints interspersed with 60 s of recovery before and after 3 d of Cr (0.35 g/kg of fat-free mass) or P (maltodextrin) ingestion. Before and after supplementation, 10 contiguous transaxial images of both thighs were obtained with magnetic resonance imaging.
Results
Cr supplementation resulted in statistically significant increases in body mass (0.9 +/- 0.1 kg, P < 0.03), total work during the first sprint (P < 0.04), and peak power during sprints 2 to 6 (P < 0.10). As expected, total work and peak power values for males were greater than those for their female counterparts during the initial sprint (P < 0.02); however, the reverse was true during the last three sprints (P < 0.01). Imaging data showed a 6.6% increase in thigh volume in five of six Cr subjects (P = 0.05).
Conclusion
These data indicate that 3 d of Cr supplementation can increase thigh muscle volume and may enhance cycle sprint performance in elite power athletes; moreover, this effect is greater in females as sprints are repeated.
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