LITTLE ROCK — So what is it now, you experts? We need to learn how to sit?
Oh, puhleeze. We've been doing it all our lives. For many, sitting for eight hours straight is pivotal to the job, not to mention that post-work leisure time plopped on the La-Z-Boy watching TV or playing video games. Occasionally we'll get up to go sit in our cars so we can sit in restaurants and eat.
You'd think, therefore, we'd have this sitting thing down by now, that we'd be no slouches when it comes to taking a load off.
Turns out, we literally are slouches. Doctors, chiropractors and ergonomics experts, who make a nice living off our backs, say poor posture while sitting is something of an epidemic.
Eighty percent of Americans will cringe with back pain at some point in their lives, and back injuries prove the top reason for missed work, according to the National Institutes of Health. All those preventable injuries bother San Francisco chiropractor Gregg Carb.
Carb has self-published a book, The Science of Sitting Made Easy (Posture Press, $14.95, 176 pages), to address the problem. Boiled to its essence, his message is, "Sit up straight."
Spines are strong and resilient, Carb says, but "when you hold any body position for long periods of time, your spine is gradually reshaped into that very position through an adaptation of the connective soft tissues.
"Everyone has their own style of sitting, so to speak. But no one's immune to gravity and, therefore, you will experience [back pain] as a result."
This is not some breakthrough discovery. But "it's a huge issue," says Dr. George D. Picetti III, spine surgeon at the Sutter Neuroscience Medical Group in Sacramento, Calif. "Sitting is very hard on the spine, mostly in the lumbar [lower back] region. The longer you sit, the more you compress the discs.
"Throughout the day, the water content of each disc declines. You're very vulnerable to lifting or something like that."
Years of improper sitting can lead to disc degeneration, which is permanent. But, Carb says, mobility and comfort can be restored through rigid adherence to, well, better sitting.
"You will get some actual form changes over time if you improve your posture," Carb says. "It's almost like having braces [on your teeth]. But we've found we can loosen people up in a matter of weeks."
What not to do while sitting: Roll your shoulders inward, jut your head forward, round out your lower back, sink your chest.
What to do to avoid those bad habits: Set your seat back to a nearly upright position and sit as far back into the seat back as you can, keeping your rib cage and trunk upright and your head aligned directly above your shoulders.
And get up and walk around now and then.
Picetti recommends lumbar support - usually a molded foam pad - to promote the natural forward arch of the lower back. The support should be placed around the belt line, "but some people have more swayback, so you've got to fit yourself for it."
The other option is to spring for an ergonomically designed office chair. Picetti, though, says he just uses "a regular chair with a lumbar support."
Paying close attention to your breathing - deep breaths that expand the rib cage - is another key, Carb says.
"Patients are always worried about their head and shoulders being in the wrong position," Carb says. "But if you keep your rib cage up, the other parts will follow. That's how to do it without overwhelming yourself doing too many things at once."
Indeed, trying to remember to keep proper alignment and breathing while concentrating on work tasks - or gaining another level on the handheld video game - is hard but not impossible.
The only proven alternative, says Scottish researcher Dr. Waseem Amir Bashir, is to go into full La-Z-Boy recline on the job. Bashir's study at a hospital in Aberdeen, Scotland, compared magnetic resonance imaging results of people reclining vs. sitting upright. It showed reclining puts less strain on lumbar discs than does sitting up straight.
"The study is correct," Picetti says. "But how are you going to work reclining without craning your neck forward?"
Two other alternatives are sitting on a Swiss exercise ball in lieu of a chair, or standing at a specially aligned chest-level desk. Neither is practical, Carb says.
"I wouldn't want to stand all the time, because there's the issue of blood pooling in the lower extremities," Carb says. "If you do it, you need to shift your weight around, get some contraction in the muscles."
Picetti says the exercise ball is beneficial only if you're an athlete with a strong core and that "the average person is going to end up with more back pain."
ActiveStyle, Pages 30 on 08/31/2009