Physical inactivtity is a major cause of preventable premature morbidity and mortality in the U.S.

Associated with heart disease, colon and breast cancers, Diabetes and osteoporosis.

Cause of 250,000 premature deaths in the U.S

In the past 15 years or so a lot of research has been conducted on physical activity and racial or gender variations…

Recently (past 5 years) as we in public health have begun to recognize more complex factors in health behavior more research has begun to examine factors like: socioeconomic status,

social support,

personal barriers,

and environmental attributes