Relation of physical activity and cardiovascular fitness to coronary heart disease, Part I: A meta-analysis of the independent relation of physical activity and coronary heart disease
- PMID: 1532879
Relation of physical activity and cardiovascular fitness to coronary heart disease, Part I: A meta-analysis of the independent relation of physical activity and coronary heart disease
Abstract
Background: This paper is the first of two reports that together review the scientific evidence regarding the inverse relation between physical activity and cardiovascular fitness and coronary heart disease (CHD).
Methods: In Part I, the evidence suggesting a causal link between physical activity and CHD protection independent of other CHD risk factors is reviewed, accounting for bias, confounding, and different study designs.
Results: A strong, consistent inverse relation is found. Using meta-analytic techniques, the relative risk of the independent relation of physical inactivity to CHD is 1.37, with a 95 percent confidence interval (1.27-1.48).
Conclusions: A graded biologic response of CHD protection to physical activity is shown, but the intensity, duration, and frequency of activity necessary for CHD benefit remain unclear. Plausible biologic mechanisms for the inverse relation of physical activity to CHD are the risk factor modifications that accrue with physical activity.
Comment in
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Physical activity and coronary heart disease.J Am Board Fam Pract. 1992 Jul-Aug;5(4):448-50. J Am Board Fam Pract. 1992. PMID: 1496905 No abstract available.
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