Sitting immobile for hours at a computer screen - a normal part of many office jobs - isn't exactly good for your back or your concentration. If you frequently change your position though, you'll do both your body and mind a favour.
This is the advice of the Campaign for Healthier Backs (AGR), a German association that promotes research and public information on back-pain prevention. How best to do it? By having what's known as a "dynamic" or "active" office chair, it says.
"The next time you start drifting off at your computer screen, it may not be the task you're working on that's to blame, but your chair," remarks Dieter Breithecker, a health and exercise scientist and AGR adviser.
As he explains it, dynamic office chairs are equipped with multidimensional, cushioned movement mechanisms in the seat that promote - unconsciously but effectively - dynamic sitting "and increased concentration and creativity besides."
It's scientifically proven that physical activity not only strengthens back muscles, but also enhances cognitive functioning. As described by embodiment theory in psychology, cognitive processes are influenced by sensorimotor systems. Creativity, problem-solving and concentration benefit from movement, even when you're seated.
Sitting still, on the other hand, increases the risk of back pain, muscle tension, cardiovascular disorders and diabetes. So Breithecker advises regular changes of position: "Stay dynamic when you're standing, sitting or thinking. And if you're sitting, move as much as possible."
The special mechanics of dynamic office chairs enable both micro- and macromovements that activate muscle groups and promote sensorineural-motor interaction.
What should you look for in a dynamic office chair? The AGR points to easily adjustable seat height and depth, multidimensional seat mobility, seamless adaptation to intuitive changes in position, and environmentally friendly, non-slip upholstery.
If the chair is on rollers, they should be braked by your body weight "so that you don't start rolling through the office if you give a jerk!"
Many dynamic office chairs are individually adjustable to the user's needs and have, for example, a backrest that can provide extra lower back support and adapt to different body shapes and postures, improving seating comfort in a leaning position. Chronic back pain sufferers get noticeable relief, the AGR says. – dpa
