Creatine supplementation combined with resistance training in older men
Chrusch MJ, Chilibeck PD, Chad KE, Davison KS, Burke DG
Medicine and science in sports and exercise · 133 citas
Etiquetas de revisión
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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
- 2001-12-01 · Med Sci Sports Exerc · vol. 33 · número 12 · págs. 2111–2117
- Editorial
- Lippincott Williams & Wilkins
- Citado
- 234 citas · más que el 83% de estudios similares · 1.8× el promedio de su campo
- Referencias
- 34 trabajos
- Acceso
- De pago
- Áreas de investigación
- Muscle metabolism and nutrition · Nutrition and Health in Aging · Sports Performance and Training
- Palabras clave
- creatine supplementation, resistance training, older men, sarcopenia, lean body mass, muscle strength, muscular endurance, average power, body composition, fat mass, aging
- MeSH
- muscle, skeletal, humans, muscle cramp, diarrhea, creatine, exercise, double-blind method, task performance and analysis, body composition, physical endurance, weight lifting, aged, aged, 80 and over, middle aged, male
5 autores
- Murray Justin Chrusch🇨🇦University of Saskatchewan
- Philip David Chilibeck🇨🇦University of Saskatchewan
- Karen E. Chad🇨🇦University of Saskatchewan
- Kelly S. Davison🇨🇦University of Saskatchewan
- DARREN G. BURKE🇨🇦University of Saskatchewan
Resumen
El texto original del estudio, en el idioma en que se publicó.
Purpose
To study the effect of creatine (Cr) supplementation combined with resistance training on muscular performance and body composition in older men.
Methods
Thirty men were randomized to receive creatine supplementation (CRE, N = 16, age = 70.4 +/- 1.6 yr) or placebo (PLA, N = 14, age = 71.1 +/- 1.8 yr), using a double blind procedure. Cr supplementation consisted of 0.3-g Cr.kg(-1) body weight for the first 5 d (loading phase) and 0.07-g Cr.kg(-1) body weight thereafter. Both groups participated in resistance training (36 sessions, 3 times per week, 3 sets of 10 repetitions, 12 exercises). Muscular strength was assessed by 1-repetition maximum (1-RM) for leg press (LP), knee extension (KE), and bench press (BP). Muscular endurance was assessed by the maximum number of repetitions over 3 sets (separated by 1-min rest intervals) at an intensity corresponding to 70% baseline 1-RM for BP and 80% baseline 1-RM for the KE and LP. Average power (AP) was assessed using a Biodex isokinetic knee extension/flexion exercise (3 sets of 10 repetitions at 60 degrees.s(-1) separated by 1-min rest). Lean tissue (LTM) and fat mass were assessed using dual energy x-ray absorptiometry.
Results
Compared with PLA, the CRE group had significantly greater increases in LTM (CRE, +3.3 kg; PLA, +1.3 kg), LP 1-RM (CRE, +50.1 kg; PLA +31.3 kg), KE 1-RM (CRE, +14.9 kg; PLA, +10.7 kg), LP endurance (CRE, +47 reps; PLA, +32 reps), KE endurance (CRE, +21 reps; PLA +14 reps), and AP (CRE, +26.7 W; PLA, +18 W). Changes in fat mass, fat percentage, BP 1-RM, and BP endurance were similar between groups.
Conclusion
Creatine supplementation, when combined with resistance training, increases lean tissue mass and improves leg strength, endurance, and average power in men of mean age 70 yr.
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