Validity of heart rate based nomogram fors estimation of maximum oxygen uptake in Indian population.
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Date
2012-07
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Abstract
Maximal oxygen uptake (VO2max) during a graded maximal
exercise test is the objective method to assess cardiorespiratory fitness.
Maximal oxygen uptake testing is limited to only a few laboratories as it
requires trained personnel and strenuous effort by the subject. At the
population level, submaximal tests have been developed to derive VO2max
indirectly based on heart rate based nomograms or it can be calculated
using anthropometric measures. These heart rate based predicted standards
have been developed for western population and are used routinely to
predict VO2max in Indian population. In the present study VO2max was
directly measured by maximal exercise test using a bicycle ergometer and
was compared with VO2max derived by recovery heart rate in Queen’s
College step test (QCST) (PVO2max I) and with VO2max derived from
Wasserman equation based on anthropometric parameters and age (PVO2max
II) in a well defined age group of healthy male adults from New Delhi. The
values of directly measured VO2max showed no significant correlation either
with the estimated VO2max with QCST or with VO2max predicted by
Wasserman equation. Bland and Altman method of approach for limit of
agreement between VO2max and PVO2max I or PVO2max II revealed that
the limits of agreement between directly measured VO2max and PVO2max
I or PVO2max II was large indicating inapplicability of prediction equations
of western population in the population under study. Thus it is evident that
there is an urgent need to develop nomogram for Indian population, may
be even for different ethnic sub-population in the country.
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Keywords
heart rate, nomogram, maximal oxygen consumption
Citation
Kumar S Krishna, Khare P, Jaryal A K, Talwar A. Validity of heart rate based nomogram fors estimation of maximum oxygen uptake in Indian population. Indian Journal of Physiology and Pharmacology. 2012 Jul-Sept; 56(3): 279-283.