Why the study?
Does physical activity reduce the risk of heart attacks in middle-aged men?
Does physical activity reduce the risk of heart attacks in middle-aged men?
Overall physical activity, particularly moderate to moderately vigorous levels, is an independent protective factor against ischemic heart disease in middle-aged men.
May support activity counseling in middle-aged men; leaves open need for RCTs to confirm causality.
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Shaper et al. (1991) studied this question.
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