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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) x HR(rest)(-1) or HR(max) x 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 x kg(-1) x min(-1); females: 35.90 ± 3.46 ml x kg(-1) x min(-1)) and predicted VO(2max) or P VO(2max) (males: 38.87 ± 1.15 ml x kg(-1) x min(-1); females: 36.24 ± 1.94 ml x kg(-1) x min(-1)) from HR(peak) x HR(rest)(-1) or estimated VO(2max) or E VO(2max) (males: 37.72 ± 2.55 ml x kg(-1) x min(-1); females: 37.20 ± 1.50 ml x kg(-1) x min(-1)) from HR(max)x 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) x HR(rest)(-1) and HR(max) x HR(rest)(-1) were 1.87 ml x kg(-1) x min(-1) and 2.14 ml x kg(-1) x min(-1), respectively, in males and 2.09 ml x kg(-1) x min(-1) and 2.83 ml x kg(-1) xmin(-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 x kg(-1)x min(-1); females: 34.23 ± 3.70 ml x kg(-l) x min(-1)) from P VO(2max (males: 38.99 ± 3.68 ml x kg(-l) x min(-1); females: 34.47 ± 3.55 ml x kg(-1)x min(-1)) or from EVO(2max), (males: 38.39 ± 3.66 ml x kg(-l) x min(-); females: 33.87 ± 3.52 ml x kg(-l) x min(-l)). Based on the present observation, the heart rate ratio method is recommended for predicting VO(2max) in Indian university students.

Prediction of maximum oxygen uptake by using the heart rate ratio method in Indian university students.