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Physical activity: Health impact, prevalence, correlates and interventions
Ryan E Rhodes1, Ian Janssen2, Shannon S D Bredin3
1a Behavioural Medicine Laboratory, School of Exercise Science, Physical and Health Education , University of Victoria , Victoria , Canada.
Psychology & Health
|May 31, 2017
Summary
Regular physical activity (PA) prevents chronic diseases, with about 75% of adults meeting guidelines. Future research should focus on mechanisms, optimal dosage, surveillance, and effective behavior change techniques for better interventions.
Area of Science:
- Public Health
- Exercise Science
- Behavioral Medicine
Background:
- Physical activity (PA) is crucial for preventing numerous chronic conditions.
- Understanding PA's role requires examining definitions, benefits, prevalence, correlates, and interventions.
Purpose of the Study:
- To synthesize current research on physical activity.
- To provide an overview of PA definitions, health benefits, prevalence, correlates, and interventions.
Main Methods:
- Literature review of published reviews.
- High-level synthesis of existing research findings.
Main Results:
- PA reduces risk for at least 25 chronic conditions (20-30% risk reduction).
- Approximately 75% of adults meet PA guidelines, with lower prevalence in women, youth, older adults, and higher-income countries.
- Motivation, self-efficacy, and self-regulation are key PA correlates; interventions show small effect sizes with considerable heterogeneity.
Conclusions:
- Future research should investigate PA's health outcome mechanisms and optimal dosage.
- Improving PA surveillance scope and validity is essential.
- Developing innovative, scalable, and sustainable behavior change techniques for PA interventions is critical.
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