The definition of physical activity in the literature on sports practice is highly heterogeneous. This article provides evidence of the extent to which the inclusion of walking, which is one of the most frequent types of physical activity, and the minimum frequency used to consider a person a practitioner affect the conclusions about the correlates of physical activity practice and frequency. To this end, we compared participation and frequency models by applying different measures of physical activity. We found that the activities included under the definition of physical activity play a...Read more
