The effect of short-term creatine loading on active range of movement
Sculthorpe N, Grace F, Jones P, Fletcher I
Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme · 3 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
- 2010-06-01 · Appl Physiol Nutr Metab · vol. 35 · número 4 · págs. 507–511
- Editorial
- NRC Research Press
- Citado
- 9 citas · más que el 51% de estudios similares · 0.1× el promedio de su campo
- Referencias
- 20 trabajos
- Acceso
- De pago
- Áreas de investigación
- Muscle metabolism and nutrition · Sports Performance and Training · Exercise and Physiological Responses
- Palabras clave
- creatine monohydrate, creatine loading, joint mobility, phosphocreatine, intracellular water, shoulder extension, shoulder abduction, ankle dorsiflexion, weight gain, ergogenic aids
- MeSH
- joints, humans, body weight, creatine, range of motion, articular, administration, oral, double-blind method, time factors, beverages, dietary supplements, adult, england, male, arthrometry, articular, young adult
4 autores
- Nicholas F. Sculthorpe🇬🇧University of Bedfordshire; Kingston University London; Moulton College
- Fergal Grace🇬🇧University of Bedfordshire; Kingston University London; Moulton College
- Peter Jones🇬🇧University of Bedfordshire; Kingston University London; Moulton College
- Iain M. Fletcher🇬🇧University of Bedfordshire; Kingston University London; Moulton College
Resumen
El texto original del estudio, en el idioma en que se publicó.
During high-intensity exercise, intracellular creatine phosphate (PCr) is rapidly broken down to maintain adenosine triphosphate turnover. This has lead to the widespread use of creatine monohydrate as a nutritional ergogenic aid. However, the increase in intracellular PCr and the concomitant increase in intracellular water have not been investigated with regard to their effect on active range of movement (ROM). Forty male subjects (age, 24+/-3.2 years) underwent restricted randomization into 2 equal groups, either an intervention group (CS) or a control group (C). The CS group ingested 25 g.day(-1) of creatine monohydrate for 5 days, followed by 5 g.day(-1) for a further 3 days. Before (24 h before starting supplementation (PRE) and after (on the 8th day of supplementation (POST)) this loading phase, both groups underwent goniometry measurement of the shoulder, elbow, hip, and ankle. Data indicated significant reductions in active ROM in 3 movements: shoulder extension (57+/-11.3 degrees PRE vs. 48+/-11.2 degrees POST, p<0.01), shoulder abduction (183.4+/-6.8 degrees PRE vs. 180.3+/-5.1 degrees POST, p<0.05), and ankle dorsiflexion (14.2+/-4.7 degrees PRE vs. 12.1+/-6.4 degrees POST, p<0.01). There was also a significant increase in body mass for the CS group (83.6+/-6.2 kg vs. 85.2+/-6.3 kg, p<0.05). The results suggest that short-term supplementation with creatine monohydrate reduces the active ROM of shoulder extension and abduction and of ankle dorsiflexion. Although the mechanism for this is not fully understood, it may be related to the asymmetrical distribution of muscle mass around those joints.
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