What is the value of an adjustable back angle on an ergonomic chair?

Adjustable recline range is a key specification in our ergonomic chair portfolio at OfficeFurniture2go.com. Research in occupational biomechanics documents that maintaining the spine at 90 degrees is not the ergonomic ideal—a 100–110-degree recline reduces nucleus pulposus pressure in L4-L5 by up to 30% compared to strict upright seating. Our premium task chairs offer 90–135-degree recline with infinite position locking and calibrated tilt tension adjustment. The tension mechanism is particularly important: a spring too stiff for the user's weight prevents comfortable recline, defeating the feature's purpose. We specify tension ranges calibrated to the weight distribution of the user population. Call 1-800-460-0858.