2.50
Hdl Handle:
http://hdl.handle.net/10547/223804
Title:
The effect of short-term creatine loading on active range of movement
Authors:
Sculthorpe, Nicholas ( 0000-0001-8235-8580 ) ; Grace, Fergal; Jones, Peter; Fletcher, Iain M.
Abstract:
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.
Affiliation:
University of Bedfordshire
Citation:
Sculthorpe, N., Grace, F., Jones, P., and Fletcher, I. (2010) 'The effect of short-term creatine loading on active range of movement', Applied physiology, nutrition, and metabolism, 35(4) pp.507-11.
Journal:
Applied physiology, nutrition, and metabolism = Physiologie appliquée, nutrition et métabolisme
Issue Date:
Aug-2010
URI:
http://hdl.handle.net/10547/223804
DOI:
10.1139/H10-036
PubMed ID:
20725117
Type:
Article
Language:
en
ISSN:
1715-5312
Appears in Collections:
Muscle Cellular and Molecular Physiology

Full metadata record

DC FieldValue Language
dc.contributor.authorSculthorpe, Nicholasen_GB
dc.contributor.authorGrace, Fergalen_GB
dc.contributor.authorJones, Peteren_GB
dc.contributor.authorFletcher, Iain M.en_GB
dc.date.accessioned2012-05-15T12:19:00Z-
dc.date.available2012-05-15T12:19:00Z-
dc.date.issued2010-08-
dc.identifier.citationSculthorpe, N., Grace, F., Jones, P., and Fletcher, I. (2010) 'The effect of short-term creatine loading on active range of movement', Applied physiology, nutrition, and metabolism, 35(4) pp.507-11.en_GB
dc.identifier.issn1715-5312-
dc.identifier.pmid20725117-
dc.identifier.doi10.1139/H10-036-
dc.identifier.urihttp://hdl.handle.net/10547/223804-
dc.description.abstractDuring 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.en_GB
dc.language.isoenen
dc.rightsArchived with thanks to Applied physiology, nutrition, and metabolism = Physiologie appliquée, nutrition et métabolismeen_GB
dc.subjectNutritionen_GB
dc.subjectMuscle functionen_GB
dc.subjectFlexibilityen_GB
dc.subject.meshAdministration, Oral-
dc.subject.meshAdult-
dc.subject.meshArthrometry, Articular-
dc.subject.meshBeverages-
dc.subject.meshBody Weight-
dc.subject.meshCreatine-
dc.subject.meshDietary Supplements-
dc.subject.meshDouble-Blind Method-
dc.subject.meshEngland-
dc.subject.meshHumans-
dc.subject.meshJoints-
dc.subject.meshMale-
dc.subject.meshRange of Motion, Articular-
dc.subject.meshTime Factors-
dc.subject.meshYoung Adult-
dc.titleThe effect of short-term creatine loading on active range of movementen
dc.typeArticleen
dc.contributor.departmentUniversity of Bedfordshireen_GB
dc.identifier.journalApplied physiology, nutrition, and metabolism = Physiologie appliquée, nutrition et métabolismeen_GB

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