American adults' knowledge of exercise recommendations.James R. Morrow, Jeanette A Krzewinski-Malone, Allen W. Jackson, Timothy J. Bungum, Shannon J FitzgeraldResearch quarterly for exercise and sport2004Physical inactivity is a major risk factor for cardiovascular disease, stroke, hypertension, diabetes, obesity, osteoporosis, and some cancers. Approximately 950,000 Americans die annually from… (More)