Cancer-type Variation

Blood cancer and uterine and cervical cancer survivors did not show a significant physical activity association, even after adjustment. In breast cancer survivors, a crude association was observed but neither lower-activity group had a significantly higher or lower adjusted risk. Prior reviews reported that physical activity effects vary by cancer type, with positive effects documented especially in prostate, breast, colorectal, and lung cancer. The absence of a significant adjusted effect in breast cancer survivors may relate to the cohort skewing toward older, longer-term survivors who are healthier than newly diagnosed patients. In prostate cancer survivors, both lower physical activity groups had significantly higher risk than the exercise-and-walking group after adjustment. In colorectal, stomach, and lung cancer survivors, no physical activity was significantly associated with higher risk of mortality or LTCI certification after adjustment.