| Sweat lactate response between males with high and low aerobic fitness. | |
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MedLine Citation:
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PMID: 14551778 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Sweat lactate indirectly reflects eccrine gland metabolism. However the potential influence of aerobic fitness on sweat lactate is not well-understood. Six males with high aerobic fitness [peak oxygen consumption ( VO(2)peak): 61.6 (2.5) ml.kg(-1).min(-1)] and seven males with low aerobic fitness [ VO(2)peak: 41.8 (6.4) ml.kg(-1).min(-1)] completed a maximal exertion cycling trial followed on a different day by 60 min of cycling (60 rev.min(-1)) in a 30 degrees C wet bulb globe temperature environment. Intensity was individualized at 90% of the ventilatory threshold ( V(E)/ VO(2) increase with no concurrent V(E)/ VCO(2) increase). Sweat samples were collected from the lumbar region every 10 min and analyzed for lactate concentration. Sweat rate (SR) was significantly greater ( p<0.05) for subjects with a high [1445 (254) ml.h(-1)] versus a low [1056 (261) ml.h(-1)] fitness level. Also, estimated total lactate excretion (SRxmean sweat lactate concentration) was marginally greater ( p=0.2) in highly fit males. However, repeated measures ANOVA showed no significant differences ( p>0.05) between groups for sweat lactate concentration at any time point. Current results show highly fit (vs. low fitness level) males have a greater sweat rate which is consistent with previous literature. However aerobic fitness and subsequent variations in SR do not appear to influence sweat lactate concentrations in males. |
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Authors:
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J M Green; R C Pritchett; T R Crews; J R McLester; D C Tucker |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2003-10-09 |
Journal Detail:
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Title: European journal of applied physiology Volume: 91 ISSN: 1439-6319 ISO Abbreviation: Eur. J. Appl. Physiol. Publication Date: 2004 Jan |
Date Detail:
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Created Date: 2003-12-23 Completed Date: 2004-11-02 Revised Date: 2006-11-15 |
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: 1-6 Citation Subset: IM |
Affiliation:
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Department of Physical Education and Recreation, Western Kentucky University, 1 Big Red Way, Bowling Green, KY 42101, USA. matt.green@wku.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Body Temperature Regulation Eccrine Glands / chemistry Humans Lactic Acid / analysis* Male Physical Fitness / physiology* Sweat / chemistry* |
| Chemical | |
Reg. No./Substance:
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50-21-5/Lactic Acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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