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Exercise as cancer treatment
From Elizabeth Quinn,
Your Guide to Sports Medicine.
Evidence seems to support the benefits
of exercise as a treatment for cancer. Several studies have
examined the relationship between exercise, rehabilitation
and quality of life in cancer patients and reported positive
findings.
Studies have followed women undergoing breast cancer treatment
who added moderate exercise to their treatment regimen.
In most studies women exercised at a moderate intensity
(60-85% maximal heart rate) for twenty to thirty minutes,
3 times per week from 4 to 12 weeks. The exercise programs
included bicycle ergometer and walking programs.
These studies have found that overall, exercise had a positive
effect on physical and psychological functioning of cancer
patients while in treatment. These benefits include the
following objective and self-reported findings:
•increasedfunctionalcapacityand[ahref="/gi/dynamic/offsite.htm?site=http:
//www.brianmac.demon.co.uk/vo2max.htm"]VO2Max[/a]
• decreased body fat
• increased lean muscle mass
• decreased nausea and fatigue
• improved natural defense mechanisms
• improved sense of control
• improved mood
• improved self-esteem
• self reported improved quality of life
Other studies found that exercising cancer patients had
improved work capacity, lower heart rates at given exercise
intensity, increased maximum workloads and time to exhaustion
than did non-exercising cancer patients.
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Psychological changes, including a decrease in total mood
disturbances, decrease in depression and fewer problems
sleeping were noted between the exercise and non-exercise
groups.
A review of the literature shows some evidence that exercise
rehabilitation has a beneficial effect on the physical and
psychological well-being of patients with breast cancer.
However, more focused studies are needed to draw specific
conclusions. While these results must be considered with
some degree of caution, it would suggest that performing
moderate exercise can provide great benefit and little risk
to cancer patients.
References:
• Friedenreich C M, Courneya K S. Exercise as rehabilitation
for cancer patients. Clinical Journal of Sport Medicine1996,
6(4), 237-244.
• Kerry S. Courneya, PhD; John R. Mackey, MD; Lee W. Jones,
MSc. Coping With Cancer - Can Exercise Help? THE PHYSICIAN
AND SPORTSMEDICINE - VOL 28 - NO. 5 - MAY 2000
• Winningham ML. Related Articles, Strategies for managing
cancer-related fatigue syndrome. Cancer. 2001 Aug 15;92(S4):988-97.
• Schwartz AL, Mori M, Gao R, Nail LM, King ME. Exercise
reduces daily fatigue in women with breast cancer receiving
chemotherapy.
Med Sci Sports Exerc. 2001 May;33(5):718-23.
• Schwartz AL. Daily fatigue patterns and effect of exercise
in women with breast cancer. Cancer Pract. 2000 Jan-Feb;8(1):16-24.
• MacVicar MG, Winningham ML, Nickel JL. Effects of aerobic
interval training on cancer patients' functional capacity.
Nurs Res. 1989 Nov-Dec;38(6):348-51.
• Winningham ML, MacVicar MG, Bondoc M, Anderson JI, Minton
JP. Effect of aerobic exercise on body weight and composition
in patients with breast cancer on adjuvant chemotherapy.
Oncol Nurs Forum. 1989 Sep-Oct;16(5):683-9.
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