Document Detail


Ventilatory threshold and work efficiency during exercise on cycle and paddling ergometers in young female kayakists.
MedLine Citation:
PMID:  8162918     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The aim of this study was to assess the effects of increasing specific (paddling ergometer) and non-specific (cycle ergometer) exercise on parameters relating to the ventilatory threshold (Th(vent)) and work efficiency in 11 young female flat-water kayakists. When these trained subjects were tested using non-specific workloads, their oxygen uptake (VO2) values at Th(vent), as a percentage of VO2max (%VO2max), were close to those of untrained subjects [74.2 (5.6) % VO2max, mean (SD)]. However, when we tested the same subjects using specific exercise, we recorded values typical of highly trained athletes [84.8 (4.7) % VO2max). For the non-specific exercise on the cycle ergometer, we recorded work efficiency values close to those of untrained subjects [22.3 (2.5) %]; however, for the specific exercise on the paddling ergometer, we recorded much lower values [13.4 (3.0) %] both at the level of Th(vent). The work efficiency at two warm-up submaximal exercise loads on the paddling ergometer was non-significantly lower than values at Th(vent) [12.3 (2.8) % and 12.9 (2.9) % respectively]. Significant correlations were found between maximal-performance VO2 (ml.kg-1.min-1) and performance at Th(vent) during paddling and race performance (0.623, 0.630 and 0.648 respectively, all P < 0.05). Because the results of both specific and non-specific submaximal exercise tests are different, we suggest caution in the interpretation of physiological variables that may be sensitive to training status. The evaluation of Th(vent) and work efficiency as supplementary parameters during laboratory studies enables the determination of the effectiveness of the training process and the specific adaptation of the subjects.
Authors:
V Bunc; J Heller
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  European journal of applied physiology and occupational physiology     Volume:  68     ISSN:  0301-5548     ISO Abbreviation:  Eur J Appl Physiol Occup Physiol     Publication Date:  1994  
Date Detail:
Created Date:  1994-05-26     Completed Date:  1994-05-26     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0410266     Medline TA:  Eur J Appl Physiol Occup Physiol     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  25-9     Citation Subset:  IM    
Affiliation:
Faculty of Physical Education and Sports, Charles University, Prague, Czech Republic.
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MeSH Terms
Descriptor/Qualifier:
Adaptation, Physiological
Adolescent
Bicycling / physiology
Exercise / physiology*
Exercise Test
Female
Humans
Oxygen Consumption / physiology
Physical Education and Training
Respiratory Mechanics / physiology*
Sports / physiology*
Work of Breathing / physiology*

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


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