CHARACTERISTICS OF LEISURE-TIME PHYSICAL-ACTIVITY ASSOCIATED WITH DECREASED RISK OF PREMATURE ALL-CAUSE AND CARDIOVASCULAR-DISEASE MORTALITY IN MIDDLE-AGED MEN

The association between leisure time physical activity and the risk of all-cause and cardiovascular disease mortality was analyzed in a Finn ish cohort of 1,072 men aged 35-63 years who were followed up for 10 y ears and 10 months. During the period, 168 deaths were recorded, 93 of which were the result of cardiovascular diseases. Leisure time physic al activity was assessed by several measures: 1) a single question com bining an estimate of the frequency and intensity of the total amount of leisure time physical activity, 2) a compiled measure of leisure li me physical activity derived from three separate questions concerning the intensity and frequency of activity, 3) a physical activity energy expenditure index computed as an estimate of weekly energy expenditur e for leisure time activity and commuting to work, and 4) 16 separate specified activities of daily living and domestic chores included in t he leisure time physical activity index. The association between basel ine leisure time physical activity and the risk of death was assessed using the Cox proportional hazards model. After adjustment for potenti al confounders, the leisure time physical activity energy expenditure index and participation in several specific activities of daily living and domestic chores showed that the mortality risk for all causes and cardiovascular diseases was highest in the most sedentary men. With r espect to the leisure time physical activity energy expenditure index, sedentary men (those with an estimated weekly energy expenditure in l eisure time physical activity of <800 kcal) had an increased risk of 2 .74 (95% confidence interval 1.46-5.14) for all-cause mortality and a risk of 3.58 (95% confidence interval 1.45-8.85) for cardiovascular di sease mortality compared with the most active persons (those with an e stimated weekly energy expenditure in leisure time physical activity o f at least 2,100 kcal) when age, initial health status, marital status , employment status, and smoking were controlled.