Published at Saturday, April 14th, 2018 - 02:30:05 AM. . By Sarai Mixon.
Are your knees below your hips? When seated with your feet resting on the floor, you want to ensure your knees are below your hips. This is especially critical on heavy use chairs to ensure you maintain proper circulation below the knee. As a general rule, the angle formed by your torso and thighs should be between 90 and 105 degrees. Is the chair rounded at the front? A rounded front also helps to maintain proper circulation in your legs. How’s the back? Make sure the back rest feels comfortable. Lumbar support systems vary, so make sure the fit is good.
When choosing an exercise ball chair, it's important to select one that's properly sized for you. A chair that's too big will raise you too high over the keyboard, forcing you to rest your wrists as you type. A chair that's too low will force your thighs and knees up while your arms strain to reach the desk. Most balls come in optional 45 cm, 55 cm, 65 cm or 75 cm dimensions, so choose accordingly.
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