Document Detail


Relationship between aerobic physical fitness and ventilatory control during exercise in young swimmers.
MedLine Citation:
PMID:  2616928     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The aim of this study was to specify in young trained swimmers, during progressive exercise, whether different aerobic physical fitness goes along with differences in breathing pattern and in mouth occlusion pressure used as a non-invasive index of neuromuscular output. Ten children (aged 10.5-16 years) with high VO2 max (57.6 +/- 3.6 ml.min-1.kg-1) and ten children (aged 11-17 years) with moderate VO2 max (44 +/- 3.8 ml.min-1.kg-1) realized a maximal exercise test on a cycle ergometer. During the last minute of each power level we measured the following parameters: VO2, VCO2, VEBW, f, VTBW/TI,TI/TTOT, as well as mouth occlusion pressure (P0.1) and 'effective impedance' of the respiratory system (P0.1/VTBW/TI). Our results showed that at a same VCO2, children with high VO2 max had significantly lower P0.1, P0.1/VTBW/TI and f than children with moderate VO2 max and same VEBW/TI. At different levels of VO2, in the twenty children of the two groups, we have found significant correlations between VO2 max of each subject and P0.1 (P less than 0.01), P0.1/VTBW/TI (P less than 0.001). At a same VO2, children with a higher VO2 max showed significantly lower P0.1, P0.1/VTBW/TI at all levels of VO2 and lower VEBW and VTBW/TI at high level of VO2. At a same VE, the two groups of children showed the same values of VT/TI and f. In conclusion this study shows first, that different aerobic physical fitness does not go along with different breathing pattern, and second, that swimmers with high physical fitness have a lower ventilatory response to exercise but a higher ventilatory and neuromuscular efficiency during exercise than children with moderate physical fitness.
Authors:
M Ramonatxo; J Mercier; C Prefaut
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Respiration physiology     Volume:  78     ISSN:  0034-5687     ISO Abbreviation:  Respir Physiol     Publication Date:  1989 Dec 
Date Detail:
Created Date:  1990-03-13     Completed Date:  1990-03-13     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0047142     Medline TA:  Respir Physiol     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  345-56     Citation Subset:  IM    
Affiliation:
Service d'Exploration de la Fonction Respiratoire, Hôpital Aiguelongue, Montpellier, France.
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Airway Resistance
Body Weight
Child
Exercise*
Female
Humans
Male
Mouth / physiology
Oxygen Consumption
Physical Fitness*
Pressure
Pulmonary Ventilation
Respiration*
Swimming*
Tidal Volume
Time Factors

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


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