Key result
Higher physical activity (≥90 mins/day) was associated with lower depression risk (RR 0.80; 95% CI 0.70-0.92), whereas watching TV ≥21 hours/week increased risk (RR 1.13; 95% CI 1.00-1.27).
Why the study?
Do physical activity and television watching affect the risk of clinical depression in older women?
Cohort (n=49,821)
Do physical activity and television watching affect the risk of clinical depression in older women?
Effect estimate: RR 0.80 (95% CI 0.70-0.92)
p-value: p=< 0.001
Higher physical activity is independently associated with a lower risk of clinical depression, whereas more time spent watching television is associated with a higher risk in older women.
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Supports activity and TV counseling in older women; leaves open whether interventions alter depression incidence.
Lucas et al. (2011) conducted a cohort in Clinical depression (n=49,821). Physical activity vs. <10 minutes/day was evaluated on Clinical depression (self-reported physician-diagnosed depression or use of antidepressants) (RR 0.80, 95% CI 0.70-0.92, p=< 0.001). Higher physical activity (≥90 mins/day) was associated with lower depression risk (RR 0.80; 95% CI 0.70-0.92), whereas watching TV ≥21 hours/week increased risk (RR 1.13; 95% CI 1.00-1.27).
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