The impact of exercise upon medical costs.
D002908:Chronic Disease / Q000191:economics; D003327:Coronary Disease / Q000191:economics* / Q000517:prevention & control; D003365:Costs and Cost Analysis; D005102:Health Expenditures; D006299:Health Services for the Aged / Q000191:economics; D006801:Humans; D007109:Immunity; D008019:Life Style; D009017:Morbidity; D009026:Mortality; D005082:Physical Exertion; D014947:Wounds and Injuries / Q000191:economics