| Practical neck cooling and time-trial running performance in a hot environment. | |
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MedLine Citation:
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PMID: 20694731 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The aim of this two-part experiment was to investigate the effect of cooling the neck on time-trial performance in hot conditions (~30°C; 50% RH). In Study A, nine participants completed a 75-min submaximal (~60% V(O₂(max)) pre-load phase followed by a 15-min self-paced time-trial (TT) on three occasions: one with a cooling collar (CC(90)), one without a collar (NC(90)) and one with the collar uncooled (C(90)). In Study B, eight participants completed a 15-min TT twice: once with (CC(15)) and once without (NC(15)) a cooling collar. Time-trial performance was significantly improved in Study A in CC(90) (3,030 ± 485 m) compared to C(90) (2,741 ± 537 m; P = 0.008) and NC(90) (2,884 ± 571 m; P = 0.041). Fifteen-minute TT performance was unaffected by the collar in Study B (CC(15) = 3,239 ± 267 m; NC(15) = 3,180 ± 271 m; P = 0.351). The collar had no effect on rectal temperature, heart rate or RPE. There was no effect of cooling the neck on S100β, cortisol, prolactin, adrenaline, noradrenaline or dopamine concentrations in Study A. Cooling the neck via a cooling collar can improve exercise performance in a hot environment but it appears that there may be a thermal strain threshold which must be breached to gain a performance benefit from the collar. |
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Authors:
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Christopher James Tyler; Perry Wild; Caroline Sunderland |
Publication Detail:
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Type: Journal Article; Randomized Controlled Trial Date: 2010-08-08 |
Journal Detail:
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Title: European journal of applied physiology Volume: 110 ISSN: 1439-6327 ISO Abbreviation: Eur. J. Appl. Physiol. Publication Date: 2010 Nov |
Date Detail:
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Created Date: 2010-11-05 Completed Date: 2011-02-28 Revised Date: 2011-06-24 |
Medline Journal Info:
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Nlm Unique ID: 100954790 Medline TA: Eur J Appl Physiol Country: Germany |
Other Details:
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Languages: eng Pagination: 1063-74 Citation Subset: IM |
Affiliation:
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School of Life Sciences, Whitelands College, Roehampton University, London, UK. chris.tyler@roehampton.ac.uk |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Athletes* Athletic Performance / physiology* Body Temperature / physiology Dopamine / blood Epinephrine / blood Heart Rate / physiology Hot Temperature / adverse effects* Humans Hydrocortisone / blood Hypothermia, Induced / methods* Male Neck / physiology* Nerve Growth Factors / analysis Norepinephrine / blood Oxygen Consumption / physiology Prolactin / blood Running / physiology* S100 Proteins / analysis Young Adult |
| Chemical | |
Reg. No./Substance:
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0/Nerve Growth Factors; 0/S-100 calcium-binding protein beta subunit; 0/S100 Proteins; 50-23-7/Hydrocortisone; 51-41-2/Norepinephrine; 51-43-4/Epinephrine; 9002-62-4/Prolactin |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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