Arthur S. Leon

TL;DR: An updated version of the Compendium of Physical Activities, a coding scheme that classifies specific physical activity (PA) by rate of energy expenditure, is provided to enhance the comparability of results across studies using self-reports of PA.

TL;DR: The 2011 Compendium is an update of a system for quantifying the energy cost of adult human PA and is a living document that is moving in the direction of being 100% evidence based.

TL;DR: In this article, a coding scheme for classifying physical activity by rate of energy expenditure, i.e., by intensity, was presented for classification of physical activity using five digits that classify activity by purpose (i.e. sports, occupation, sel

TL;DR: A questionnaire for evaluating energy expenditure in leisure time physical activity (LTA) along with information about its validity is presented in this paper, which is valid for use in longitudinal studies in North America of the relationship of physical activity to disease, in weight control clinics and in other researches in which leisure-time physical activity is of interest.

TL;DR: There are multiple, nonoverlapping dimensions of physical activity, reflected in multiple non overlapping validation realms, and most questionnaires were related to performance of heavy intensity physical activity and treadmill performance; these same questionnaires tended to be related to percent body fat.