| Method of lactate elevation does not affect the determination of the lactate minimum. | |
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MedLine Citation:
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PMID: 12439078 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: The aim of the study was to examine the effects of different lactate elevation protocols on the determination of the lactate minimum (Lac(min)) point. METHODS: Eight highly trained racing cyclists each completed four continuous ramp lactate minimum tests using the following blood lactate elevation protocols: 1) continuous ramp maximal aerobic power (RMP(max)) assessment, 2) 30-s maximal sprint, 3) 40-s maximal sprint, and 4) two 20-s maximal sprints separated by a 1-min recovery. Each blood lactate elevation protocol was followed by a 5-min active recovery leading into a continuous ramp test commencing at a power of 60% of RMP(max), using a 6 W x min ramp rate, lasting 15 min. RESULTS: Peak [La](b) values were significantly higher (P > 0.05) after the RMP(max) compared with all other protocols and higher in the 40-s versus 30-s sprint. However, by the start of Lac(min) ramp, [La](b) after the RMP(max) was no longer higher than the 40-s sprint, but Lac(min) [La](b) was similar for all protocols. This resulted in no differences in the total decline of [La](b) measured as a percentage from the highest to the lowest value. At Lac(min) point, there were no significant differences in power (P > 0.05), but heart rate was higher in the RMP versus 2 x 20 s and VO(2) was significantly higher after the 40 s compared with the 2 x 20 s protocol. CONCLUSION: This study demonstrated that the determination of lactate minimum power in cycling is not dependent upon the lactate elevation protocol. |
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Authors:
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Mark F Smith; James Balmer; Damian A Coleman; Steve R Bird; R C Richard Davison |
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Publication Detail:
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Type: Clinical Trial; Comparative Study; Journal Article |
Journal Detail:
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Title: Medicine and science in sports and exercise Volume: 34 ISSN: 0195-9131 ISO Abbreviation: Med Sci Sports Exerc Publication Date: 2002 Nov |
Date Detail:
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Created Date: 2002-11-19 Completed Date: 2003-03-06 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 8005433 Medline TA: Med Sci Sports Exerc Country: United States |
Other Details:
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Languages: eng Pagination: 1744-9 Citation Subset: IM; S |
Affiliation:
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Department of Sport and Exercise Science, Canterbury Christ Church University College, United Kingdom. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Anaerobic Threshold Analysis of Variance Bicycling / physiology* Cohort Studies Confidence Intervals Energy Metabolism / physiology* Exercise Test Female Humans Lactates / blood*, metabolism Lactic Acid / blood, metabolism Male Oxygen Consumption / physiology Physical Endurance / physiology Physical Exertion / physiology* Probability |
| Chemical | |
Reg. No./Substance:
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0/Lactates; 50-21-5/Lactic Acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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