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Published on: March 7, 2019
Accelerometer-Determined Physical Activity and All-Cause Mortality in a National Prospective Cohort Study of Adults
Paul D Loprinzi1,2, Ovuokerie Addoh2
11 Jackson Heart Study Vanguard Center of Oxford, Oxford, MS, USA.
Purpose:
No epidemiological study has examined the association of objectively measured physical activity with all-cause mortality among adults who have had a stroke, which was the purpose of this study.
Design:
Prospective.
Setting:
National Health and Nutrition Examination Survey 2003 to 2006.
Participants:
One hundred eighty-four patients with stroke.
Measures:
Physical activity assessed via accelerometry (ActiGraph 7164), with stroke assessed via self-report of physician diagnosis. Mortality was assessed via linkage with the National Death Index, with follow-up through 2011.
Analysis:
Cox proportional hazard model.
Results:
The median follow-up period was 71.96 months, with 13 241 person-months; 53 deaths occurred during this follow-up period. After adjustments, for every 60 min/d increase in total physical activity, adults who have had a stroke had a 28% (hazard ratio = 0.72; 95% confidence interval: 0.59-0.88) reduced risk of all-cause mortality.
Conclusion:
Physical activity among stroke survivors is inversely associated with all-cause mortality.
