How Does Exercise Improve Chronic Low Back Pain?

After years of chronic low back pain, I started exercising regularly despite having bad days. Over time my pain has gotten much better. Though I still have some bad days, these are far fewer. Can anyone explain why exercise works this way?

It's clear that exercise does have an impact on pain levels. This is true for many conditions. The exact way it works isn't clear. Exercise does release natural pain killers in the body. It's possible exercise alters pain you're expecting before you even begin.

Scientists aren't sure how that works either but they are studying various aspects of exercise and diseases, illnesses, and other conditions. It's clear that general exercise
benefits the body overall. In time we expect to be able to find out which exercise works best for each problem and apply that to each individual patient. This idea is called
prescription exercise

Some exercise programs are already known. Back problems caused by disc disease can be managed with McKenzie exercises. Osteoporosis is treated with specific weight bearing and weight lifting exercises. Heart disease can be prevented with aerobic exercise. Someday it's expected that we will know what exercise to prescribe for liver disease, thyroid conditions, autoimmune diseases, and so on.

James Rainville, MD, et al. The Influence of Intense Exercise-Based Physiotherapy Program on Back Pain Anticipated before and Induced by Physical Activities. In The Spine Journal. March/April 2004. Vol. 4. No. 2. Pp. 176-183.

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