The effects of creatine and whey protein supplementation on body composition in men aged 48 to 72 years during resistance training
Eliot KA, Knehans AW, Bemben DA, Witten MS, Carter J, Bemben MG
The journal of nutrition, health & aging · 62 citas
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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
- 2008-03-01 · J Nutr Health Aging · vol. 12 · número 3 · págs. 208–212
- Editorial
- Springer Science+Business Media
- Citado
- 78 citas · más que el 63% de estudios similares · 0.5× el promedio de su campo
- Referencias
- 30 trabajos
- Acceso
- Acceso abierto (revista híbrida) · CC-BY-NC-ND
- Áreas de investigación
- Muscle metabolism and nutrition · Nutrition and Health in Aging · Body Composition Measurement Techniques
- Palabras clave
- creatine supplementation, whey protein supplementation, body composition, resistance training, middle-aged men, older men, ergogenic aids, intracellular and extracellular water, dietary intake
- MeSH
- humans, creatine, double-blind method, body composition, dietary supplements, aged, middle aged, male, resistance training, whey
6 autores
- Kathrin A. Eliot🇺🇸University of Oklahoma Health Sciences Center
- ALLEN W. KNEHANS🇺🇸 · autor de correspondenciaUniversity of Oklahoma Health Sciences Center
- Debra A. Bemben🇺🇸University of Oklahoma
- Michael S. Witten🇺🇸University of Oklahoma
- J. Carter🇺🇸University of Oklahoma
- Michael G. Bemben🇺🇸University of Oklahoma
Resumen
El texto original del estudio, en el idioma en que se publicó.
Objectives
Creatine and whey protein are supplements believed to have an ergogenic effect. Very little is known regarding the effects of these dietary supplements in older men. The purpose of this study was to determine the effect of creatine and whey protein supplements, consumed independently and in combination, on total and regional body composition in middle-aged men during a resistance-training program.
Design, setting, participants
Forty-two men were randomly assigned to four groups to receive supplements according to a double-blind protocol. Groups consumed their supplements three times per week immediately following their resistance training sessions. The groups were: 1) placebo (480 ml of Gatorade); 2) creatine (480 ml of Gatorade plus 5 grams of creatine); 3) whey protein (480 ml of Gatorade plus 35 grams of whey protein powder); and 4) whey protein/creatine (480 ml of Gatorade plus 5 grams of creatine and 35 grams of whey protein powder). All groups participated in resistance training 3 times per week for 14 weeks.
Measurements
At the beginning and end of the study, total and regional measures of body composition (DXA) and total (TBW), intracellular (ICW), and extracellular (ECW) body water (Multifrequency BIA) were measured and 3-day diet records were completed.
Results
There were significant training effects for regional arm fat (decrease), regional arm bone free-fat free mass (BF-FFM - increase), total body BF-FFM (increase), ICW (increase), and ECW (increase) but no significant group effects and only one significant group by training interaction (ECW). There were no significant changes for total calorie, carbohydrate, fat or protein intake for any of the groups from prestudy to post-study testing.
Conclusion
The results from this study suggest that supplementation with creatine, whey protein, or a combination of creatine and whey protein, when combined with resistance training in middle-aged men, have no added benefit to changes that occur to body composition due to resistance training alone.
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