Effect of Intensity and Type of Physical Activity on Mortality: Results From the Whitehall II Cohort Study
Key result
Reporting ≥1 hour per week of moderate activity was associated with a 33% lower mortality risk, and sports participation reduced mortality risk (HR 0.71; 95% CI 0.56-0.91).
Why the study?
Does the intensity and type of physical activity reduce all-cause mortality in adults?
Population
7,456 men and women from the Whitehall II Study, mean age 55.9 ± 6.0 years
Comparison
Physical activity of varying intensity and type vs Lower levels of physical activity
Design
Cohort
Follow-up
mean 9.6 years (SD = 2.7)
Authors
Discussion
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Member takes
Implication
Should not change practice; leaves open whether activity type causally lowers mortality in observational cohorts.
Study Design
Type
Cohort (n=7,456)
Structured PICO
Does the intensity and type of physical activity reduce all-cause mortality in adults?
P
Population
7,456 men and women from the Whitehall II Study (mean age 55.9 years) followed for a mean of 9.6 years to assess the association of physical activity with mortality.
E
Exposure
Physical activity of varying intensity and type (e.g., at least 1 hour per week of moderate activity, sports, do-it-yourself activity)
C
Comparator
Lower levels of physical activity (e.g., less than 1 hour per week of moderate activity)
O
Outcome
All-cause mortality assessed until April 2009hard clinical
Main Result
Hazard Ratio: 0.71 (95% CI 0.56–0.91)
Engaging in at least 1 hour per week of moderate physical activity, particularly sports and do-it-yourself activities, is associated with a significantly lower risk of all-cause mortality.
Cite This Study
Sabia et al. (2011) reported a cohort. Physical activity (moderate, sports, or do-it-yourself) vs. Less than 1 hour per week or no participation was evaluated on All-cause mortality (sports participation) (HR 0.71, 95% CI 0.56-0.91). Reporting ≥1 hour per week of moderate activity was associated with a 33% lower mortality risk, and sports participation reduced mortality risk (HR 0.71; 95% CI 0.56-0.91).