The process of a 1992 consensus conference that examined relationships among physical activity, fitness, and health variables is described. The conference involved internationally known scientists with relevant expertise. The paper discusses potential sources of physical activity, the benefits of physical activity, the possible harmful effects of…

This paper presents epidemiologic evidence on the contributions of physical inactivity and reduced cardiorespiratory fitness to risk of coronary heart disease (CHD). The types and dose of physical activity to reduce risk of CHD and plausible biologic mechanisms for the partial protective effect are reviewed. (Author/SM)