(09-02-06) Physical activity and risk of ovarian cancer: results from the Netherlands cohort study (the Netherlands).

Biesma RG, Schouten LJ, Dirx MJ, Goldbohm RA, van den Brandt PA.

Department of Epidemiology, NUTRIM, Maastricht University, PO Box 616, 6200 MD, Maastricht, The Netherlands.

Objective To investigate the association between nonoccupational physical activity and the risk of ovarian cancer among post-menopausal women.Methods The Netherlands Cohort Study on Diet and Cancer consists of 62,573 women aged 55-69 years at baseline. Information regarding baseline nonoccupational physical activity and history of sports activity was collected with a self-administered questionnaire in 1986. After 11.3 years of follow-up, 252 cases of invasive epithelial ovarian cancer were available for case-cohort analysis.Results In multivariate analysis and compared to women who spent less than 30 min per day on physical activity, the rate ratios (RRs) of ovarian cancer for women who spent up to 60, 90 and >90 min per day were 0.78, 0.86 and 0.72, respectively (95% confidence interval (CI) for the top category, 0.48-1.06; p-trend, 0.15). Women who spent more than 2 h per week on recreational biking and walking had a reduced risk of ovarian cancer (RR = 0.65; 95% CI: 0.41-1.01) compared to women who never participated in recreational biking or walking.Conclusions These data suggest a modest inverse association between moderate physical activity and ovarian cancer risk. Vigorous physical activity was not associated with ovarian cancer risk.

Cancer Causes Control. 2006 Feb;17(1):109-15.

PMID: 16411060 [PubMed - in process]

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