* Sitting: Correct seated posture is a continual debate with ergonomic professionals. Some say that users need to have a 90-90-90 degree placement for the elbow, hip, and knee joints, respectively. Others feel that a variation in this placement is better, as long as it does not lead to slouching or hunching over. A good seated posture is one that is comfortable and does not put a lot of stress or strain on the user’s buttocks, back, or arm muscles, and allows the user’s feet to be on the floor.
Ergonomics and human design use (case study)
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