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Physical activity and erectile dysfunction: meta-analysis of population-based studies.
J Y W Cheng1, E M L Ng, J S N Ko
1Department of Psychiatry, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong. jackieyg@hku.hk
International Journal of Impotence Research
|August 25, 2006
Summary
Regular physical activity is linked to a reduced risk of erectile dysfunction (ED). Both moderate and high levels of exercise show a protective effect, warranting further investigation through large-scale studies.
Area of Science:
- Urology
- Public Health
- Epidemiology
Background:
- Erectile dysfunction (ED) is a prevalent condition affecting men's health.
- The relationship between physical activity and ED risk requires further clarification.
Purpose of the Study:
- To systematically review and meta-analyze the association between physical activity and erectile dysfunction.
- To quantify the risk of ED associated with different levels of physical activity.
Main Methods:
- Searched Medline, PubMed, and PsychInfo for population-based studies (cross-sectional, cohort, RCTs) on physical activity and ED.
- Included studies reporting adjusted odds ratios (OR) for physical activity in relation to ED.
- Performed meta-analysis using random effects models to derive summary estimates.
Main Results:
- A pooled analysis of seven cross-sectional studies, two cohort studies, and one RCT found a summary OR of 0.53 (0.31, 0.91) for physical activity in individuals with ED.
- Moderate physical activity showed an OR of 0.63 (0.43, 0.93), and high physical activity showed an OR of 0.42 (0.22, 0.82).
- Publication bias was not detected through visual inspection of funnel plots and statistical tests (Begg's, Egger's).
Conclusions:
- Physical activity appears to have a protective effect against erectile dysfunction.
- Further investigation with large-scale cohort studies or randomized controlled trials is recommended to establish causality.
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