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dc.contributor.author
Flück, Joëlle Leonie
dc.contributor.author
Schläpfer, Max Walter
dc.contributor.author
Perret, Claudio
dc.date.accessioned
2019-06-24T15:53:25Z
dc.date.available
2017-06-12T13:41:33Z
dc.date.available
2019-06-24T15:53:25Z
dc.date.issued
2016-09-22
dc.identifier.issn
2072-6643
dc.identifier.other
10.3390/nu8100586
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/121231
dc.identifier.doi
10.3929/ethz-b-000121231
dc.description.abstract
(1) Background: studies with able-bodied athletes showed that performance might possibly be influenced by vitamin D status. Vitamin D seems to have a direct impact on neuromuscular function by docking on vitamin D receptors in the muscle tissue. Additionally, a high prevalence of vitamin D deficiency was shown not only in infants and in the elderly but also in healthy adults and spinal cord injured individuals. Therefore, the aim of our study was to investigate whether a vitamin D dose of 6000 IU daily over 12 weeks would be sufficient to increase vitamin D status in indoor wheelchair athletes to a normal or optimal vitamin D level and whether vitamin D deficiency is associated with an impairment in muscle performance in these individuals; (2) Methods: vitamin D status was assessed in indoor elite wheelchair athletes in order to have a baseline measurement. If vitamin D status was below 75 nmol/L, athletes were supplemented with 6000 IU of vitamin D daily over 12 weeks. A vitamin D status over 75 nmol/L was supplemented with a placebo supplement. Vitamin D status, as well as a Wingate test and an isokinetic dynamometer test, were performed at baseline and after six and 12 weeks; (3) Results: 20 indoor elite wheelchair athletes participated in this double-blind study. All of these athletes showed an insufficient vitamin D status at baseline and were, therefore, supplemented with vitamin D. All athletes increased vitamin D status significantly over 12 weeks and reached an optimal level. Wingate performance was not significantly increased. Isokinetic dynamometer strength was significantly increased but only in the non-dominant arm in isometric and concentric elbow flexion; (4) Conclusion: a dose of 6000 IU of vitamin D daily over a duration of 12 weeks seems to be sufficient to increase vitamin D status to an optimal level in indoor wheelchair athletes. It remains unclear, whether upper body performance or muscle strength and vitamin D status are associated with each other.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
MDPI
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
25[OH]D
en_US
dc.subject
Spinal cord injuries
en_US
dc.subject
Anaerobic performance test
en_US
dc.subject
Dynamometer test
en_US
dc.title
Effect of 12-Week Vitamin D Supplementation on 25[OH]D Status and Performance in Athletes with a Spinal Cord Injury
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
ethz.journal.title
Nutrients
ethz.journal.volume
8
en_US
ethz.journal.issue
10
en_US
ethz.pages.start
586
en_US
ethz.size
13 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.identifier.scopus
ethz.identifier.nebis
006947861
ethz.publication.place
Basel
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2017-06-12T13:45:00Z
ethz.source
ECIT
ethz.identifier.importid
imp593654c2c27b413373
ethz.ecitpid
pub:183325
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-13T15:07:03Z
ethz.rosetta.lastUpdated
2019-06-24T15:53:36Z
ethz.rosetta.versionExported
true
ethz.COinS
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