A recent study suggest that weight management may be more important than exercise in controlling tumor spread.
Men that were getting one to two hours per week of exercise in 1998 were 23% more likely to be alive 12 years later than those who exercised less than an hour per week.
In this study, cancer risk among exercisers was lessened substantially for the following cancers: esophagus (decrease of 42%); liver (decrease of 27%); lung (decrease of 26%); kidney (decrease of 23); gastric cardia (decrease of 22%); endometrium/uterus (decrease of 21%); myeloid leukemia (decrease of 20%); myeloma (decrease of 17%); colon (decrease of 16%); head and neck (decrease of15%); rectum (decrease of 13%); bladder (decrease of 13%); and breast (decrease of 10%).
A study of a weight training intervention for cancer survivors showed it increased their upper- and lower body strength at three months and even more at six months. This study showed that breast cancer survivors were able to improve their function over six months.
In a study exploring the relationship between exercise and memory, breast cancer survivors who increased their physical activity had decreased levels of stress and fatigue, and felt better about their ability to remember things.