Table 1.

The level of evidence linking physical activity with lower risk and sitting time with higher risk of cancer in 2008 [43] and 2018 [9] according to the Physical Activity Guidelines for Americans Advisory Committee.

Cancer	Physical activity and lower risk, 2008	Physical activity and lower risk, 2018	Sitting time and higher risk, 2018
Colon	Strong	Strong	Moderate
Breast	Strong	Strong	-
Kidney	-	Strong	-
Endometrial	Limited	Strong	Moderate
Bladder	-	Strong	-
Esophageal (adenocarcinoma)	-	Strong	-
Stomach (cardia)	-	Strong	-
Lung	Limited	Moderate	Moderate
Hematologic	-	Limited	-
Head and neck	-	Limited	-
Pancreas	-	Limited	-
Prostate	No effect (limited)	Limited	-
Ovary	Limited	Limited	-
Brain	-	Not assignable	-
Thyroid	-	No effect (limited)	-
Rectal	No effect (limited)	No effect (limited)