Document Detail


Lung function, arterial saturation and oxygen uptake in elite cross country skiers: influence of exercise mode.
MedLine Citation:
PMID:  17040487     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Arterial desaturation during exercise is common in endurance-trained athletes, a phenomenon often more pronounced when the muscle mass engaged in the exercise is large. With this background, the present study monitored seven international-level cross country skiers performing on a treadmill while running (RUN), double poling (DP; upper body exercise) and diagonal skiing (DIA; arm and leg exercise). Static and dynamic lung function tests were performed and oxygen uptake was measured during submaximal and maximal exercise. Lung function variables (including the diffusion capacity) were only 5-20% higher than reported in sedentary men. Vital capacity was considerably lower than expected from the skiers' maximal oxygen uptake (VO(2max)), but the maximal ventilation followed a linear relationship with VO(2max). None or only a mild desaturation was observed in DP, RUN and DIA. Blood lactate concentration was slightly higher in DIA than in DP but not different from RUN. In DIA, VO(2max) was 6.23 +/- 0.47 L/min (mean +/- SD), which was 3.8% and 13.9% higher than in RUN and DP, respectively, with similar peak heart rates for the three exercise modes. No relationships were present either between the degree of desaturation and pulmonary functions tests, or with peak oxygen uptakes. The low blood lactate accumulation during the exhaustive efforts contributed to the arterial oxygen saturation being mild in spite of the very high oxygen uptake observed in these skiers.
Authors:
H-C Holmberg; H Rosdahl; J Svedenhag
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2006-10-13
Journal Detail:
Title:  Scandinavian journal of medicine & science in sports     Volume:  17     ISSN:  0905-7188     ISO Abbreviation:  Scand J Med Sci Sports     Publication Date:  2007 Aug 
Date Detail:
Created Date:  2007-07-26     Completed Date:  2007-10-25     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9111504     Medline TA:  Scand J Med Sci Sports     Country:  Denmark    
Other Details:
Languages:  eng     Pagination:  437-44     Citation Subset:  IM    
Affiliation:
Department of Physiology & Pharmacology, Karolinska Institute, Stockholm, Sweden. h.c.holmberg@sok.se
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MeSH Terms
Descriptor/Qualifier:
Anoxia
Arteries / physiology*
Exercise Test
Humans
Lung / physiology*
Male
Monitoring, Ambulatory
Oxygen / analysis*
Oxygen Consumption / physiology*
Physical Fitness / physiology
Skiing / physiology*
Sweden
Chemical
Reg. No./Substance:
7782-44-7/Oxygen

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


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