Leisure time physical activity and disease-specific mortality among men with chronic bronchitis: evidence from the Whitehall study.
OBJECTIVE
This study examined the association between leisure time physical activity and cause-specific mortality among male Whitehall Study participants with chronic bronchitis.


METHODS
Rate ratios were calculated for 4 mortality outcomes, according to level of activity and baseline bronchitis status, in a 25-year follow-up of 6479 men.


RESULTS
After multiple adjustment for potential confounding or mediating variables, activity was inversely related to all-cause, cardiovascular, coronary heart disease, and noncardiovascular mortality among men free of chronic bronchitis. Among men with bronchitis, weak, nonsignificant positive associations were observed between activity and these outcomes, with the exception of noncardiovascular mortality.


CONCLUSIONS
The suggestion of a positive activity-mortality association among individuals with chronic bronchitis-albeit weak and nonsignificant-requires further investigation.
Epidemiology Unit, Department of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, Keppel Street, London WC1E 7HT, England. david.batty@lshtm.ac.uk
G David
GD
Batty
Martin J
MJ
Shipley
Michael G
MG
Marmot
George Davey
GD
Smith
D029481:Bronchitis, Chronic / Q000150:complications / Q000401:mortality*; D002318:Cardiovascular Diseases / Q000150:complications / Q000401:mortality; D002423:Cause of Death; D003327:Coronary Disease / Q000150:complications / Q000401:mortality; D003644:Death Certificates; D004651:Employment / Q000145:classification; D015444:Exercise; D006077:Government Agencies; D006801:Humans; D015994:Incidence; D007899:Leisure Activities; D008131:London / Q000453:epidemiology; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D010809:Physical Fitness; D016016:Proportional Hazards Models; D012307:Risk Factors; D011795:Surveys and Questionnaires