Document Detail


Estimation of peak oxygen uptake from maximal power output among 9-10 year-old children in Lhasa, Tibet.
MedLine Citation:
PMID:  20842087     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
AIM: The aims of the present study of Tibetan and Han Chinese children were to establish prediction equations for peak oxygen uptake (V.O2peak) using conventional power output measures, and to compare with prediction models based on data from sea level.
METHODS: In 25 Tibetan children and 15 Han Chinese children aged 9-10 years, living in Lhasa at 3700 meters above sea level, V.O2peak was measured directly using a portable oxygen analyzer, and predicted from maximal power output (Wmax) using a maximal cycle ergometer test.
RESULTS: In multiple regression analyses with V.O2peak as dependent variable and Wmax and sex as covariates, a total adjusted R2 of 0.76 and 0.82 were found in Tibetan and Han Chinese children, separately. Sex made a unique, and statistically significant, contribution to the prediction of V.O2peak. Three equations derived from sea level data were compared with the equations from the present study. None of the three could accurately predict the direct measured V.O2peak, and predictions differed in an unsystematic manner, including over- or underestimation and no differentiation between genders.
CONCLUSION: Peak oxygen uptake could be estimated from Wmax and sex in a progressive cycle ergometer test among children living at 3700 meters in Tibet. The estimate of V.O2peak is probably more valid using the present equations than prediction models based on data from sea level. The equations used for the prediction are: BianbaeqT: (l·min-1) = 0.5419 + (0.0096· Wmax) - (0.0562· sex); boys=0; girls=1 BianbaeqH: (l·min-1) = 0.4060 + (0.0124· Wmax) - (0.1775· sex); boys=0; girls=1.
Authors:
B Bianba; S Berntsen; L B Andersen; H Stigum; E Bjertness
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of sports medicine and physical fitness     Volume:  50     ISSN:  0022-4707     ISO Abbreviation:  J Sports Med Phys Fitness     Publication Date:  2010 Sep 
Date Detail:
Created Date:  2010-09-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0376337     Medline TA:  J Sports Med Phys Fitness     Country:  Italy    
Other Details:
Languages:  eng     Pagination:  274-80     Citation Subset:  IM    
Affiliation:
Tibet University Medical College, Lhasa, Tibet, China - bianbajinzha2@yahoo.com.
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