Recently, I was asked to do a seminar on bone density and its connection to yoga. We had a wonderful group of ladies at the Bangor Y’s Isaac Farrah Mansion in Bangor, Maine, and they had great questions. Here is some of the material I included in the seminar:
What the Research Shows
Researchers say just 12 sessions of yoga can significantly improve rheumatoid arthritis (RA) disease activity. In fact, a study through the Dubai Bone and Joint Center in the United Arab Emirates showed that study subjects who participated in bi-weekly yoga practices showed drastically more progress than those who did not use yoga as part of their overall treatment. Study leader Humeira Badsha was noted as saying that most patients with arthritis do not exercise regularly, but those who DO exercise report less pain and have better mobility. After the completion of the yoga study, there were significant improvements in patients who did yoga on a regular basis. (Findings from the Journal Rheumatology International)
Why Exercise Matters
To maintain or increase bone mass, most doctors recommend exercising consistently—30 minutes a day, 5 days a week. Kendra Zuckerman, M.D., director of the osteoporosis program at Allegheny University Hospitals in Philadelphia, also says weight bearing exercises such as walking, running, and aerobics are what stimulate the bones to retain calcium and produce more bone mass. By contrast, swimming does little to increase bone density, although it can help with joint pain and mobility.
But here’s the problem. If a woman has already started to lose bone mass, then running, or similar pounding exercises can put too much stress on the knees, ankles, and lumbar spine. Also, these activities only benefit the lower limbs and do nothing to strengthen the wrists, shoulders, upper back, or elbows. The National Osteoporosis Foundation actually warns that too much aerobic exercise can increase your chances of osteoporosis and other conditions.
Yoga helps in many ways. Some physicians recommend it to fight stress. It’s actually not the stress that directly causes health problems. When fear and anxiety strike, blood pours into the areas that feel the stress. The body diverts its energy from the immune, digestive, and other important systems, putting those functions at risk. Yoga helps people manage stress, thus lowering the chances of stress-related illnesses.
So Why Does It Work?
There are many aspects of yoga, including breathing exercises, meditation, relaxation, and “asanas” or physical postures. These physical movements allow the bones to be renewed and repaired more gradually and naturally.
Many types of western exercise are “contractive”. The movements are designed to tighten, shorten, and harden the body. Eventually, those activities lead to short, drier, hardened muscles. This then contributes to bone loss and a lack of bone health. Yoga is different. It expands the muscles, lengthening the areas with each practice. Even though yoga can lead to weight loss and burn calories, it actually expands the muscles in your body, drawing more fluid to them and leading to increased mobility.
When the muscles warm and lengthen either through hot yoga practice or just through the body heating up from exercise, Thixotropy occurs. This is when a solid is turned to a liquid by the mechanical action surrounding it. Thixotropy is often seen in earthquakes, where sandy soil will seem to almost liquefy, and homes will be swallowed up. Many doctors believe the same thing happens to the muscle tissue when practicing yoga. This helps keep the tissue loose and flexible.
Yoga actually increases bone density. In a controlled study, Professor Steven Hawkins from the Department of Kinesiology and Physical Education at California State University, Los Angeles found that women who did certain yoga postures in class twice a week and practiced on their own three times a week showed notable increases in the bone density of their spine.
Yoga helps with weight loss, as well, not only because of the calories that are burned. Yoga incorporates breathing exercises, and this increases lung capacity and helps the metabolism to function at a higher level. The postures bring increased body awareness and an inner quiet that allow a greater exploration of the emotional issues buried by overeating. Yoga also increases the energy level and improves circulation.
Yoga can help your sleep patterns, too. Deep breathing through yoga practice has been found to increase melatonin levels, aiding in better sleep. At all ages and under many different health conditions, yoga helps to quiet the mind, focus attention, and relax the body.