[Ergometric validation of a questionnaire on the physical activity in 2 Swiss towns].

A questionnaire concerning physical activity used in the National Research Program No. 1A (PNR 1A) was evaluated by using a physical fitness test on an ergometric bicycle. The values of maximum oxygen consumption correspond to different classes of physical activity set up according to the questionnaire (comparison of groups statistically significant). In addition, it appears that maximal oxygen consumption is in direct relation to the intensity of physical activity during leisure hours, whilst the degree of activity connected with professional or household duties is of very little importance.