Effect of creatine ingestion after exercise on muscle thickness in males and females
Chilibeck PD, Stride D, Farthing JP, Burke DG
Medicine and science in sports and exercise · 51 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
- 2004-10-01 · Med Sci Sports Exerc · vol. 36 · número 10 · págs. 1781–1788
- Editorial
- Lippincott Williams & Wilkins
- Citado
- 89 citas · más que el 73% de estudios similares · 1.1× el promedio de su campo
- Referencias
- 36 trabajos
- Acceso
- De pago
- Áreas de investigación
- Muscle metabolism and nutrition · Sports Performance and Training · Biochemical effects in animals
- Palabras clave
- creatine supplementation, post-exercise supplementation, muscle thickness, lean body mass, sex differences, elbow flexors, knee extensors, one-repetition maximum, bone mass, fat mass, resistance training
- MeSH
- knee, arm, muscle, skeletal, humans, creatine, ultrasonography, exercise, body composition, sex characteristics, bone density, dietary supplements, adult, female, male
4 autores
- Philip David Chilibeck🇨🇦University of Saskatchewan
- David E. Stride🇨🇦University of Saskatchewan
- Jonathan P. Farthing🇨🇦University of Saskatchewan
- DAREN G. BURKE🇨🇦St. Francis Xavier University
Resumen
El texto original del estudio, en el idioma en que se publicó.
Unlabelled
Muscles exercised before creatine (Cr) supplementation have a greater elevation of intramuscular Cr than nonexercised muscles.
Purpose
To determine whether preferential increase of muscle thickness could be achieved by ingesting Cr immediately after exercise of specific muscles over 6 wk. Another purpose was to determine if the increase in lean tissue mass (LTM) with Cr supplementation is greater in males than females.
Methods
Subjects randomly assigned to Cr (six males, five females, 0.2 g Cr x kg(-1)) and placebo (PL; five males, five females) performed single-limb training with one side of the body two times per week and with the opposite limbs two times per week. Cr was consumed after training of one side of the body and PL after training the opposite side. Subjects on PL always consumed PL after exercise. Elbow flexors and knee extensors muscle thickness, LTM, fat, and bone mass, and single-limb bench and leg press one-repetition maximum (1-RM) were assessed before and after 6 wk.
Results
Within the Cr group, elbow flexors muscle thickness increased more in the limbs trained on days Cr was supplemented compared with limbs trained on days PL was supplemented (P < 0.02). All other measures changed to a similar extent between limbs. Males on Cr had the greatest increase in LTM (P < 0.05) with no difference between females on Cr and PL. Bench press 1-RM increased more in Cr than PL groups (P < 0.01). All other measures changed to a similar extent between groups. Males increased bone mass (P < 0.01) with no effect of Cr supplementation.
Conclusion
Supplementing with Cr after training of the arms resulted in greater increase in muscle thickness of the arms. Males have a greater increase in LTM with Cr supplementation than females.
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