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Best Sitting Posture Is Not Straight Up
An anonymous reader writes, "Researchers at Woodend Hospital in Aberdeen, Scotland used a new form of magnetic resonance imaging to collect images from 22 healthy volunteers, who assumed three different sitting positions: slouching posture in which the body is hunched forward, an upright 90-degree sitting position, and a relaxed position where the subject reclined backward 135 degrees. They concluded that the reclined position is the best, and the forward slouch the worst." From the article: "'We were not created to sit down for long hours, but somehow modern life requires the vast majority of the global population to work in a seated position,' Dr. Bashir said. 'This made our search for the optimal sitting position all the more important.'"
Or did you start to slouch the moment you read this?
Does the vast majority of the global population really work in a sitting position, or is it just the vast majority that are participating in the "global economy"? I.e., if you factor in the billions who are living in poverty, is that statement still true? I'm skeptical.
Ben Hocking
Need a professional organizer?
But not necessarily for the task.
In other words, can you please do a study confirming (to my employer, of course) that this 135 degree reclined position does not adversely affect my the bloodflow to the brain, attention span, ability to perform complex mental tasks, etc?
From my anecdotal experience with video games, I can definitely say that my performance is much better when I am leaning forward than when I am reclining -- though this may also have something to do with distance from the monitor, etc.
"Trolls they were, but filled with the evil will of their master: a fell race..." -- J.R.R. Tolkien on Olog-hai
To everyone who has ever criticized my working posture: IN YOUR FACE BITCHES!!!
I now return you to your regularly scheduled slouching.
ad logicam Claiming a proposition is false because it was presented as the conclusion of a fallacious argument.
No seriously, that's what I was told, kinda.
My work had some ergonomics person come in and monitor us for a few minutes and ask us questions about our chairs and desks. Apparently someone at my work must have developed some sort of carpal tunnel or something because in the 6 years I've been here this was the first time I was ever asked about how I liked my desk or chair. Anyway I don't actually sit in my chair, I tend to curl up into it, and essentially I sit on one leg at a time and lean to the left or right depending on which leg is under me. I also am a big fan of occasionally placing both feet up on the APC under the desk and leaning from side to side.
In addition to this I don't stay in any one position very long, but rather am constantly shifting or moving from time to time. The lady interviewing me told me that this was actually good and that only people who confine themselves to one given position for a very long time (read entire work day) are the ones who generally have trouble or develop problems with their joints.
So slither and fidget in your chair, it's good for you.
Ave Molech Setting
Sitting upright -> better
Sitting in 135 degrees -> healthy
Sitting in 180 degrees -> wow, that feels great!
So basically they've found out that the more you incline backward the less you put preassure on your body. Very impressive. Too bad we can't lay down and work at the same time.
1. The intervertebral disc is NOT the only thing that can cause back pain. Slouching may unload the intervertebral disc but it will put strain on other structures.
2. Intervertebral discs NEED load too - it's actually healthy for the disc. So unloading it all day will make it weaker and could actually lead to a disc prolapse.
3. One study recently showed that it was actually beneficial for your discs if you were overweight! However if you do have a degenerated disc - it becomes more a part of the problem. Still the rest of your discs will need to be loaded.
4. Another study that tried to identify risk factors for long term disability in workers found that x-rays and MRI's gave little value - one factor that actually did prove to be a risk was if the worker was miserable at work.
Which brings me to my point; Keep moving. No one posture is good or bad for your back - they all become bad if you sustain them for too long. The worst thing a back patient can do is to stop using their backs. I always encourage my patients (I'm a physical therapist with a masters in manual therapy) to keep moving!