Anna M. Maltby of Men's Health Magazine emailed Dr. Kelsey with a question that some of her readers had regarding back pain from sitting too long. Here's her question:
"How can I keep my back from hurting when I sit for a long time"
Dr. Kelsey's reply is below:
The answer to "How can I keep my back from hurting when I sit for a long time" has a few components. I'll break it down for you and if after reading it, you have additional questions, please feel free to call me.
The most common reason you hurt from sitting is increased pressure on the annular wall of the intervertebral disc. The disc is like a cushion between two bones of the back and is made up of an inner gelatinous substance (nucleus) and an outer ligamentous tissue (annulus). Sitting places high levels of pressure on the disc and causes a stretching of the annulus and since the annulus has a nerve in it, you can hurt if the stretch is too much.
Butt amnesia is a term I use to describe weakness and atrophy of the gluteus maximus muscle. This muscle, when working properly, helps "share the load" with the spine. With a sedentary lifetsyle (now classified as taking fewer than 5000 steps per day), this muscle can whither away from lack of use. And, sitting causes the hip flexors to become tighter which tends to aggravate the gluteal weakness. Some people, who for example work at a desk job, think that by going to the gym three or four days per week, that they are not sedentary but unless you are getting at least 5000 steps per day, weight lifting at they gym may still place you in the sedentary category.
To reduce the pain in sitting:
- Get up from the sitting position for 3-5 minutes each hour. I often suggest using a digital timer. Set it for one hour. When it goes off, re-set it, get up and take a brief walk. This will greatly reduce the accumulated pressure in the spine.
- Use a small pillow or other support in the lower part of the back (between the back and the chair). This will shift some of the force to other parts of the spine instead of most of it going directly to the disc.
- Use a chair that has a reclining feature. Once an hour, tilt the chair back and rest for 3-5 minutes (if you are getting up and moving around, you do not have to do this also).
- Buy a pedometer to find out exactly how many steps you take in a day and shoot for 10000 .(http://www.amazon.com/Omron-HJ-112-Digital-Premium-Pedometer/dp/B0000U1OCI/sr=8-1/qid=1160059617/ref=pd_bbs_1/102-2981924-6995346?ie=UTF8&s=hpc).
The key is to reduce the pressure of sitting and move intermittently. Your spine was built for movement; not to be stationary for long periods of time.
You must also rehabilitate the weakened gluteal muscles. I gave some tips for this in the article I wrote. Your readers may also want to contact a physical therapist for more detailed information.