[Mathematical model for epidemiologic survey of the cardiorespiratory fitness without effort test]

Develop models to estimate the cardiopulmonary fitness without the effort test accomplishment, focusing an epidemiologic survey in young Brazilians. For that purpose, 243 volunteers were evaluated: 137 men (25 ,4 +/-6,39 years old) and 106 women (23,68+/-5,23 years old).

The volunteers were randomized into two groups (Group 1 : control - with 81 men and 58 women; and Group 2 : cross-validation - with 56 men and 48 women), submitted to cardiopulmonary effort tests with direct gas analysis. The models were developed through multiple regression , applying the stepwise method, followed by the ANOVA One-Way analysis as Tukey's Post Hoc test to compare the averages.

The average of the maximum oxygen consumption in Group 1 was 48 ,45 +/-11,91 ml/kg.min -1 and in Group 2 was 46,54+/-9,89 ml/kg.min -1 . The multiple regression lines had described two models to estimate the maximum oxygen consumption with the following average values: model 1 =48 ,46 +/-11,41 and model 2=46,83+/-11.11 ml/kg.min -1 . No important difference was observed for the effort value. The average results of the maximum oxygen consumption estimated for Group 2 model 1=48 ,14 +/-10,74 ml/kg.min -1 and model 2 =46,59+/-10,36 ml/kg.min -1 were not significantly different from the values observed in the effort test.

the models for estimating the maximum oxygen consumption demonstrated good applicability in the epidemiologic survey for young Brazilians.