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Time spent walking and risk of colorectal cancer in Japan: the Miyagi Cohort study.
Eur J Cancer Prev. 2007 Oct; 16(5):403-8.EJ

Abstract

Higher levels of physical activity have been consistently associated with a lower risk of colon cancer in earlier epidemiological studies. The specific benefits of walking, however, remain relatively unexplored. In 1990, 20 519 men and 21 469 women in Japan completed a self-administered questionnaire including a question on time spent walking per day. During 7 years of follow-up, 260 cases of colorectal cancer were documented in 305 790 person-years. We used the Cox proportional hazards regression model to estimate the relative risk of incident cancer (colorectal, colon, and rectal) according to three levels of walking. Time spent walking was inversely associated with risk of colorectal cancer incidence in men. Compared with men who walked 0.5 h or less per day, the multivariate relative risks were 1.06 (95% confidence interval 0.72-1.57) for men who walked between 0.5 and 1 h per day, and 0.57 (95% confidence interval 0.38-0.83) for men who walked 1 h or more per day (P for trend=0.003). Time spent walking per day was associated with a lower risk of colon cancer in Japanese men but not in women, and there was no association between time spent walking and the risk of rectal cancer.

Authors+Show Affiliations

Division of Epidemiology, Department of Public Health and Forensic Medicine, Tohoku University Graduate School of Medicine, Seiryo, Aoba, Sendai, Japan.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17923810

Citation

Takahashi, Hideko, et al. "Time Spent Walking and Risk of Colorectal Cancer in Japan: the Miyagi Cohort Study." European Journal of Cancer Prevention : the Official Journal of the European Cancer Prevention Organisation (ECP), vol. 16, no. 5, 2007, pp. 403-8.
Takahashi H, Kuriyama S, Tsubono Y, et al. Time spent walking and risk of colorectal cancer in Japan: the Miyagi Cohort study. Eur J Cancer Prev. 2007;16(5):403-8.
Takahashi, H., Kuriyama, S., Tsubono, Y., Nakaya, N., Fujita, K., Nishino, Y., Shibuya, D., & Tsuji, I. (2007). Time spent walking and risk of colorectal cancer in Japan: the Miyagi Cohort study. European Journal of Cancer Prevention : the Official Journal of the European Cancer Prevention Organisation (ECP), 16(5), 403-8.
Takahashi H, et al. Time Spent Walking and Risk of Colorectal Cancer in Japan: the Miyagi Cohort Study. Eur J Cancer Prev. 2007;16(5):403-8. PubMed PMID: 17923810.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Time spent walking and risk of colorectal cancer in Japan: the Miyagi Cohort study. AU - Takahashi,Hideko, AU - Kuriyama,Shinichi, AU - Tsubono,Yoshitaka, AU - Nakaya,Naoki, AU - Fujita,Kazuki, AU - Nishino,Yoshikazu, AU - Shibuya,Daisuke, AU - Tsuji,Ichiro, PY - 2007/10/10/pubmed PY - 2007/11/9/medline PY - 2007/10/10/entrez SP - 403 EP - 8 JF - European journal of cancer prevention : the official journal of the European Cancer Prevention Organisation (ECP) JO - Eur. J. Cancer Prev. VL - 16 IS - 5 N2 - Higher levels of physical activity have been consistently associated with a lower risk of colon cancer in earlier epidemiological studies. The specific benefits of walking, however, remain relatively unexplored. In 1990, 20 519 men and 21 469 women in Japan completed a self-administered questionnaire including a question on time spent walking per day. During 7 years of follow-up, 260 cases of colorectal cancer were documented in 305 790 person-years. We used the Cox proportional hazards regression model to estimate the relative risk of incident cancer (colorectal, colon, and rectal) according to three levels of walking. Time spent walking was inversely associated with risk of colorectal cancer incidence in men. Compared with men who walked 0.5 h or less per day, the multivariate relative risks were 1.06 (95% confidence interval 0.72-1.57) for men who walked between 0.5 and 1 h per day, and 0.57 (95% confidence interval 0.38-0.83) for men who walked 1 h or more per day (P for trend=0.003). Time spent walking per day was associated with a lower risk of colon cancer in Japanese men but not in women, and there was no association between time spent walking and the risk of rectal cancer. SN - 0959-8278 UR - https://www.unboundmedicine.com/medline/citation/17923810/Time_spent_walking_and_risk_of_colorectal_cancer_in_Japan:_the_Miyagi_Cohort_study_ L2 - http://dx.doi.org/10.1097/01.cej.0000236249.63489.05 DB - PRIME DP - Unbound Medicine ER -