Document Detail


The ventilatory anaerobic threshold is related to, but is lower than, the critical power, but does not explain exercise tolerance at this workrate.
MedLine Citation:
PMID:  16596094     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
AIM: The aim of the present study was to investigate the relationships between critical power (CP), maximal aerobic power and the anaerobic threshold and whether exercise time to exhaustion and work at the CP can be used as an index in the determination of endurance. METHODS: An incremental maximal cycle exercise test was performed on 30 untrained males aged 18-22 years. Lactate analysis was carried out on capillary blood samples at every 2 minutes. From gas exchange parameters and heart rate and lactate values, ventilatory anaerobic thresholds, heart rate deflection point and the onset of blood lactate accumulation were calculated. CP was determined with linear work-time method using 3 loads. The subjects exercised until they could no longer maintain a cadence above 24 rpm at their CP and exercise time to exhaustion was determined. RESULTS: CP was lower than the power output corresponding to VO2max, higher than the power outputs corresponding to anaerobic threshold. CP was correlated with VO2max and anaerobic threshold. Exercise time to exhaustion and work at CP were not correlated with VO2max and anaerobic threshold. CONCLUSIONS: Because of the correlations of the CP with VO2max and anaerobic threshold and no correlation of exercise time to exhaustion and work at the CP with these parameters, we conclude that exercise time to exhaustion and work at the CP cannot be used as an index in the determination of endurance.
Authors:
N Okudan; H Gökbel
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of sports medicine and physical fitness     Volume:  46     ISSN:  0022-4707     ISO Abbreviation:  J Sports Med Phys Fitness     Publication Date:  2006 Mar 
Date Detail:
Created Date:  2006-04-05     Completed Date:  2006-10-24     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0376337     Medline TA:  J Sports Med Phys Fitness     Country:  Italy    
Other Details:
Languages:  eng     Pagination:  15-9     Citation Subset:  IM    
Affiliation:
Department of Physiology, Meram Faculty of Medicine, Selçuk University, Konya, Turkey.
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Anaerobic Threshold / physiology*
Exercise / physiology*
Exercise Test
Fatigue / physiopathology*
Heart Rate / physiology
Humans
Lactic Acid / blood
Male
Oxygen Consumption / physiology*
Physical Endurance / physiology*
Chemical
Reg. No./Substance:
50-21-5/Lactic Acid

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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