Population attributable risk: implications of physical activity dose.

摘要: Purpose: The purpose of this study is to describe the application population attributable risk estimates in relation dose-related benefits or risks physical activity. Methods: Assumptions and limitations calculations interpretations are reviewed evaluated context activity dose. Theoretical developed for several hypothetical situations. Results: National may be inaccurate because definitions measurement techniques applied research studies prevalence surveys do not correspond. In addition, it established whether vigorous moderate independent contributors, sequential categories, interactive variables process disease reduction. This information necessary calculate most appropriately. Conclusion: Estimates burden inactivity will improved by two advances empirical studies: first, pairing relative nationally representative population-based samples; second, refined various doses