Lecture 7: PA and Cancer Flashcards
What are modifiable cancer risk factors?
Tobacco Physical Activity Diet Weight Radiation Exposure (x-rays, ultraviolet light, etc.)
What are non-modifiable cancer risk factors?
Heredity
Carcinogens (asbestos, cigarette smoke)
Certain viruses
Physical irritants (IBD of intestinal tract)
What is Relative Risk (RR)?
a ratio of the probability of the event occurring in the “exposed” group vs. a “non-exposed” group (probability of developing cancer among active vs. sedentary groups)
What is the relative risk of developing colon cancer in men who are physically active to those who are not?
The RR in those who are PA and expect 1000-2500 is reduced substantially, if you compare between that and >2500, maybe not worth the effort
How much PA is required to reduce risk of colon cancer?
30-45 mins/day of moderate intensity PA required to reduce risk
What is the relationship between PA and Uterine Cancer?
A lower relative risk among active persons, but evidence is not statistically significant
What is the relationship between PA and Breast Cancer?
Across studies, the most active women had a 20% lower risk in comparison to sedentary women
How much PA is required to reduce risk of breast cancer?
~30 mins/day of moderate intensity PA required to reduce risk
What is the relationship between PA and Prostate Cancer?
Lower relative risk in more physically active persons compared to less physically active persons
What is the relationship between PA and Lung Cancer?
Across studies, the most active individuals have a ~20% lower risk in comparison to least active
How much PA should adults get daily?
Recommend that all adults aim for 30 mins of moderate daily activity that gets your heart going
which cancers have Inverse relationships of varying strength between PA and cancer?
Colon Breast Prostate Uterine Lung
