Neuromuscular properties and fatigue in older men following acute creatine supplementation
Jakobi JM, Rice CL, Curtin SV, Marsh GD
European journal of applied physiology · 36 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
- 2001-03-03 · Eur J Appl Physiol · vol. 84 · número 4 · págs. 321–328
- Editorial
- Springer Science+Business Media
- Citado
- 56 citas · más que el 68% de estudios similares · 0.8× el promedio de su campo
- Referencias
- 0 trabajos
- Acceso
- De pago
- Áreas de investigación
- Muscle metabolism and nutrition · Nutrition and Health in Aging · Muscle Physiology and Disorders
- Palabras clave
- creatine supplementation, older men, muscle fatigue, elbow flexors, muscle activation, surface electromyography, muscle contractile properties, fatigue recovery, sarcopenia
- MeSH
- elbow joint, humans, creatine, polysaccharides, electromyography, aging, muscle fatigue, muscle contraction, aged, aged, 80 and over, male
4 autores
- Jennifer M. Jakobi🇨🇦Western University
- Charles L. Rice🇨🇦 · autor de correspondenciaWestern University
- Sarah Curtin🇨🇦Western University; Lawson Research Institute
- Greg D. Marsh🇨🇦Western University; Lawson Research Institute
Resumen
El texto original del estudio, en el idioma en que se publicó.
The purpose of this study was to investigate the effects of creatine (Cr) supplementation in 12 older (65-82 years) men. The subjects were randomly assigned to a Cr or a placebo (P) group. Seven men were supplemented with 5 g of Cr and 5 g maltodextrin four times a day for 5 days (Cr), and 5 men consumed 5 g of maltodextrin four times a day for 5 days (P). Following this treatment body mass increased significantly in the Cr group (1 kg), but did not change in the P group, and measurements of arm anthropometry were not affected in either group. Prior to and following supplementation maximal isometric voluntary force (MVC), muscle activation, contractile properties and surface electromyography (EMG) were measured in the elbow flexor muscles at baseline, during a fatiguing task and over 10 min of recovery. The fatigue protocol involved both voluntary and contractile stimulated. Stimulated contractile properties, MVC, and muscle activation were not affected by Cr supplementation. Furthermore, there were no changes in time to fatigue, decline in MVC force, muscle activation, EMG or contractile properties during the fatigue protocol. The rates of recovery of voluntary force, and stimulated contractile force did not change following Cr supplementation. These results indicate that short-term Cr supplementation in older men does not influence isometric performance of the elbow flexor muscles.
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