Weight Reduction for Osteoarthritis
Can losing weight help your arthritis? The results are not conclusive.
One observational study suggested that weight loss can reduce the risk of developing symptomatic osteoarthritis of the knee in women. This seems reasonable, as excess weight increases the stress on the knee joint. However, to date, no studies have tested weight loss as a treatment for osteoarthritis. One study did look at the possibility that the positive results seen in other studies on changes in diet were caused by weight loss, but found no correlation between the amount of weight loss and the improvement of symptoms.
Nonetheless, if you are overweight, you should make every attempt to lose weight. Increased weight is associated with accelerated progression of the disease.
Exercise
Exercise can play a central role in keeping your joints healthy.
It was once thought that exercising a joint with osteoarthritis would cause it to “wear out” faster. Recent evidence, however, suggests that exercise can play a central role in maintaining a healthy joint. Furthermore, research shows that exercises designed to strengthen the muscles surrounding an osteoarthritic joint can lead to improved function and better psychological health. However, the fact that it is difficult, if not impossible, to do “placebo” exercise makes these studies suggestive only.
Two controlled studies on osteoarthritis of the knee have found that strengthening the muscle that straightens the leg (the quadriceps) allows participants to have less disability and possibly less pain. Another couple of studies suggested that a regimen of moderate aerobic exercise, like walking or swimming, also improves the ability to function with osteoarthritis. In one study, which also included stretching and psychological support, physical activity increased by 24% and pain decreased by 14%. The use of medications was also lower. However, because all three elements of the treatment were combined, we don’t know if the positive effects were because of the exercise, the stretching, or the psychological support – or all of them.
Both of the studies that included aerobic exercise indicated that participants with moderate to severe osteoarthritis of the knee can benefit from participating in activities equivalent to walking or swimming for 30 minutes 3 times a week. Putting all this information together, it appears that regular exercise should probably be a part of your treatment plan if you develop osteoarthritis.
Consult with your doctor or a physical therapist for recommendations about the type of exercise and its intensity.
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