Physical Activity Increases Colorectal Cancer Survival

As  you may recall from this post prolonged sitting is a risk factor for all-cause mortality even if you are physically active. The conclusion in this study is so clear-cut that there is no  need to rephrase it.

More recreational physical activity before and after colorectal cancer diagnosis was associated with lower mortality, whereas longer leisure time spent sitting was associated with higher risk of death.

http://www.ncbi.nlm.nih.gov/pubmed/23341510

J Clin Oncol. 2013 Mar 1;31(7):876-85. doi: 10.1200/JCO.2012.45.9735. Epub 2013 Jan 22.

Associations of recreational physical activity and leisure time spent sitting with colorectal cancer survival.

Abstract

PURPOSE Little is known about the association of recreational physical activity or leisure time spent sitting with survival after colorectal cancer diagnosis. This study examined the associations of prediagnosis and postdiagnosis recreational physical activity and leisure time spent sitting with mortality among patients with colorectal cancer.

PATIENTS AND METHODS From a cohort of adults without colorectal cancer at baseline in 1992-1993, we identified 2,293 participants who were diagnosed with invasive, nonmetastatic colorectal cancer up to mid-2007. At baseline, before their cancer diagnosis, and again after their cancer diagnosis, participants completed detailed questionnaires that included information concerning recreational physical activity and leisure time spent sitting. Results During a maximum follow-up of 16.1 years after colorectal cancer diagnosis, 846 patients with colorectal cancer died, 379 of them from colorectal cancer. Engaging in 8.75 or more metabolic equivalent (MET) hours per week of recreational physical activity (equivalent to approximately 150 minutes per week of walking) compared with fewer than 3.5 MET hours per week was associated with lower all-cause mortality (prediagnosis physical activity: relative risk [RR], 0.72; 95% CI, 0.58 to 0.89; postdiagnosis physical activity: RR, 0.58; 95% CI, 0.47 to 0.71). Spending 6 or more hours per day of leisure time sitting compared with fewer than 3 hours per day was associated with higher all-cause mortality (prediagnosis sitting time: RR, 1.36; 95% CI, 1.10 to 1.68; postdiagnosis sitting time: RR, 1.27; 95% CI, 0.99 to 1.64).

CONCLUSION More recreational physical activity before and after colorectal cancer diagnosis was associated with lower mortality, whereas longer leisure time spent sitting was associated with higher risk of death.

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3 thoughts on “Physical Activity Increases Colorectal Cancer Survival

  1. My first thought was did they record all the external factors? Maybe increased water intake from exercise played a part? Salts sweated out? It would be great if science makes the connection to why it increases longevity because more people would be inclined to exercise knowing the reason why.

  2. Pingback: The School Of Recreation | jamesgray2

  3. Pingback: Exercise Associated with Higher Cancer Survival | Animal Abstracts

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