Creatine supplementation enhances muscular performance during high-intensity resistance exercise
Volek JS, Kraemer WJ, Bush JA, Boetes M, Incledon T, Clark KL, Lynch JM
Journal of the American Dietetic Association · 127 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
- 1997-07-01 · J Am Diet Assoc · vol. 97 · número 7 · págs. 765–770
- Editorial
- Elsevier BV
- Citado
- 219 citas · más que el 94% de estudios similares · 4.4× el promedio de su campo
- Impacto
- Entre el 10 % más citado de su campo
- Referencias
- 21 trabajos
- Acceso
- De pago
- Áreas de investigación
- Muscle metabolism and nutrition · Sports Performance and Training · Biochemical effects in animals
- Palabras clave
- creatine monohydrate, creatine supplementation, muscle performance, high-intensity resistance training, bench press, jump squat, peak power, weight gain
- MeSH
- muscle, skeletal, humans, creatine, lactic acid, placebos, exercise, diet, double-blind method, body composition, weight lifting, adult, male
7 autores
- Jeff S. Volek🇺🇸Pennsylvania State University
- William J. Kraemer🇺🇸Pennsylvania State University
- Jill A. Bush🇺🇸Pennsylvania State University
- Mark Boetes🇺🇸Pennsylvania State University
- Thomas Incledon🇺🇸Pennsylvania State University
- K. L. Clark🇺🇸Pennsylvania State University
- James M. Lynch🇺🇸Pennsylvania State University
Resumen
El texto original del estudio, en el idioma en que se publicó.
Objective
This study was undertaken to investigate the influence of oral supplementation with creatine monohydrate on muscular performance during repeated sets of high-intensity resistance exercise.
Subjects/design
Fourteen active men were randomly assigned in a double-blind fashion to either a creatine group (n = 7) or a placebo group (n = 7). Both groups performed a bench press exercise protocol (5 sets to failure using each subject's predetermined 10-repetition maximum) and a jump squat exercise protocol (5 sets of 10 repetitions using 30% of each subject's 1-repetition maximum squat) on three different occasions (T1, T2, and T3) separated by 6 days.
Intervention
Before T1, both groups received no supplementation. From T1 to T2, both groups ingested placebo capsules. From T2 to T3, the creatine group ingested 25 g creatine monohydrate per day, and the placebo group ingested an equivalent amount of placebo.
Main outcome measures
Total repetitions for each set of bench presses and peak power output for each set of jump squats were determined. Other measures included assessment of diet, body mass, skinfold thickness, and preexercise and 5-minute postexercise lactate concentrations.
Results
Lifting performance was not altered for either exercise protocol after ingestion of the placebos. Creatine supplementation resulted in a significant improvement in peak power output during all 5 sets of jump squats and a significant improvement in repetitions during all 5 sets of bench presses. After creatine supplementation, postexercise lactate concentrations were significantly higher after the bench press but not the jump squat. A significant increase in body mass of 1.4 kg (range = 0.0 to 2.7 kg) was observed after creatine ingestion.
Conclusion
One week of creatine supplementation (25 g/day) enhances muscular performance during repeated sets of bench press and jump squat exercise.
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