A population-based case-control study was conducted to assess the relation between physical activity and colon cancer among men and women aged 30-62 years.
Cases were 251 men and 193 women diagnosed with colon cancer in 1985-1989 in three counties in the Seattle metropolitan area who were identified from the Seattle-Puget Sound Surveillance, Epidemiology, and End Results registry.
Controls were 233 men and 194 women identified by random digit telephone dialing who were selected by stratified random sampling to approximate the age, sex, and county distribution of cases.
Physical activity was assessed by questions on frequency and duration of types of recreational and occupational activities during the 10-year period ending 2 years before diagnosis.
Each activity was classified as low intensity (<4.5 METs) or moderate to high intensity (=4.5 METs).
For men and women combined, moderate or high intensity recreational activity was associated with a decreased risk of colon cancer (relative risk (RR) for two or more times per week vs. none=0.70,95% confidence interval (Cl) 0.49-1.00).
This relation was stronger for men than women.
Occupational activity was not associated with colon cancer, except among men younger than 55 (RR for =14.5 hours per week of moderate activity vs. none=0.29,95% Cl 0.12-0.69).
Among men and women combined, total moderate or high intensity activity (occupational plus recreational) was marginally related to colon cancer (RR for =5 hours per week vs. (...)
Mots-clés Pascal : Tumeur maligne, Côlon, Epidémiologie, Homme, Sexe, Exercice physique, Loisir, Activité professionnelle, Washington, Etats Unis, Amérique du Nord, Amérique, Appareil digestif pathologie, Intestin pathologie, Côlon pathologie
Mots-clés Pascal anglais : Malignant tumor, Colon, Epidemiology, Human, Sex, Physical exercise, Leisure, Professional activity, Washington, United States, North America, America, Digestive diseases, Intestinal disease, Colonic disease
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 96-0327753
Code Inist : 002B13B01. Création : 10/04/1997.