Prediction of maximal oxygen intake from Astrand-Rhyming test, 12-minute run, and anthropometric variables using stepwise multiple regression. Academic Article uri icon

abstract

  • When used with normally distributed groups of subjects simple regression techniques, such as the Astrand Rhyming Test and 12 Min Run which are based upon the rectilinear relationship of heart rate to VO2 or the relationship between physical working capacity and maximal oxygen intake, seem to differentiate fairly well among varying levels of cardio respiratory fitness. If, however, volunteer subjects are tested with these instruments, the predictive validity may tend to fall in relation to the homogeneity of the group. Since these tests probably measure different aspects of cardio respiratory fitness, it seemed reasonable to utilize multiple regression analysis to improve upon the predictions of the simple regression modes. It was the problem of this investigation to compare the prediction of maximal oxygen intake with simple and with multiple regression models in young volunteer subjects. The subjects were 40 volunteer male college students, 18 to 23 yr of age. Each subject performed the Balke Treadmill Test of physical working capacity, at the end of which one min air samples were collected and analyzed for V(E) with a dry gas meter and for percent CO2 and O2 with a Micro Scholander apparatus. The Astrand Rhyming Test and 12 Min Run were administered approximately one wk apart. The data were analyzed with a computer program that performed a stepwise linear regression. Max VO2 ranged from 2.40 to 4.05 l/min (mean 3.39). The simple regression model predicting Max VO2 from that predicted by the Astrand Rhyming Nomogram yielded a correlation coefficient of r = 0.64. The best multiple prediction equation, Max VO2 = 1.466 + Age (0.005) - Height (0.118) + Weight (0.014) + Diast (0.007) + Leg Length (0.099) + 12 Min Run (0.232) + Astrand (0.345), yielded a coefficient of R = 0.814. Stepwise multiple regression analysis appears to improve the prediction of Max VO2 in homogeneous volunteer subjects.

published proceedings

  • Am J Phys Med

author list (cited authors)

  • Jessup, G. T., Tolson, H., & Terry, J. W.

citation count

  • 10

complete list of authors

  • Jessup, GT||Tolson, H||Terry, JW

publication date

  • August 1974