Effects of an amino acid/creatine energy supplement on the acute hormonal response to resistance exercise
Ratamess NA, Hoffman JR, Ross R, Shanklin M, Faigenbaum AD, Kang J
International journal of sport nutrition and exercise metabolism · 15 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
- 2007-12-01 · Int J Sport Nutr Exerc Metab · vol. 17 · número 6 · págs. 608–623
- Editorial
- Human Kinetics
- Citado
- 25 citas · más que el 69% de estudios similares · 0.7× el promedio de su campo
- Referencias
- 48 trabajos
- Acceso
- De pago
- Áreas de investigación
- Muscle metabolism and nutrition · Sports Performance and Training · Exercise and Physiological Responses
- Palabras clave
- resistance training, acute hormonal response, testosterone, growth hormone, fatigue, taurine, caffeine, glucuronolactone, essential amino acids, creatine, anabolic response
- MeSH
- humans, creatine, testosterone, human growth hormone, amino acids, area under curve, cross-over studies, double-blind method, energy intake, weight lifting, dietary supplements, adult, male
6 autores
- Nicholas A. Ratamess🇺🇸The College of New Jersey
- Jay R. Hoffman
- Ryan E. Ross
- Miles Shanklin
- Avery D. Faigenbaum
- Jie Kang
Resumen
El texto original del estudio, en el idioma en que se publicó.
The authors aimed to examine the acute hormonal and performance responses to resistance exercise with and without prior consumption of an amino acid/creatine/energy supplement. Eight men performed a resistance-exercise protocol at baseline (BL), 20 min after consuming a supplement (S) consisting of essential amino acids, creatine, taurine, caffeine, and glucuronolactone or a maltodextrin placebo (P). Venous blood samples were obtained before and immediately after (IP), 15 min (15P), and 30 min (30P) after each protocol. Area under the curve of resistance-exercise volume revealed that BL was significantly less than S (10%) and P (8.6%). For fatigue rate, only S (18.4% +/- 12.0%) was significantly lower than BL (32.9% +/- 8.4%). Total testosterone (TT) and growth hormone (GH) were significantly elevated at IP and 15P in all conditions. The GH response was significantly lower, however, in S and P than in BL. The TT and GH responses did not differ between S and P. These results indicated that a supplement consisting of amino acids, creatine, taurine, caffeine, and glucuronolactone can modestly improve high-intensity endurance; however, the anabolic-hormonal response was not augmented.
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