Sedentary male (n=94) and female (n=111) university students were randomly sampled to enumerate the prediction methods for estimating maximum oxygen uptake (VO
2max) by the heart rate ratio method (HR
peak &buli; HR
rest-1 or HR
max &buli; HR
rest-1). VO
2max was directly measured by incremental bicycle exercise whereas equations of Uth et al. (2004) were used for indirect prediction of VO
2max. The difference between directly measured VO
2max (males: 38.95±3.81 ml &buli; kg
-1 &buli; min
-1; females: 35.90±3.46 ml&buli;kg-1&buli;min-1) and predicted VO
2max or PVO
2max (males: 38.87±1.15 ml&buli;kg
-1&buli;min
-1; females: 36.24±1.94 ml&buli;kg
-1&buli;min
-1) from HR
peak&buli;HR
rest-1 or estimated VO
2max or E VO
2max (males: 37.72±2.55 ml&buli;kg
-1&buli;min
-1; females: 37.20±1.50 ml&buli;kg
-1&buli;min
-1) from HR
max&buli;HR
rest-1 was statistically insignificant. Correlation between VO
2max with P VO
2max (r=0.87 in males and r=0.58 in females) and E VO
2max (r=0.83 in males and r=0.79 in females) was significant (p<0.001). Regression analysis revealed standard errors of estimate of VO
2max when predicted from HR
peak&buli;HR
rest-1 and HR
max&buli;HR
rest-1 were 1.87 ml&buli;kg
-1&buli;min
-1 and 2.14 ml&buli;kg
-1&buli;min
-1, respectively, in males and 2.09 ml&buli;kg
-1&buli;min
-1 and 2.83 ml&buli;kg
-1&buli;min
-1, respectively, in females. The results by applying these norms in the confirmatory group were in good agreement with insignificant difference of VO
2max (males: 38.84±3.83 ml&buli;kg
-1&buli;min
-1; females: 34.23±3.70 ml&buli;kg
-1&buli;min
-1) from P VO
2max (males: 38.99±3.68 ml&buli;kg
-1&buli;min
-1; females: 34.47±3.55 ml&buli;kg
-1&buli;min
-1) or from EVO
2max (males: 38.39±3.66 ml&buli;kg
-1&buli;min
-1; females: 33.87±3.52 ml&buli;kg
-1&buli;min
-1). Based on the present observation, the heart rate ratio method is recommended for predicting VO
2max in Indian university students.
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