How do armrests affect ergonomics in an ergonomic chair?

Armrests reduce load on the upper trapezius muscles, cervical spine, and shoulders by supporting forearm weight (approximately 5–8 lbs per arm). Without armrests, or with armrests at the wrong height, shoulder muscles must continuously support arm weight — a major contributor to neck and shoulder tension. Armrests should be set so the elbows rest naturally when shoulders are fully relaxed. Armrests set too high force shoulders upward; too low encourages a slumped posture. At OfficeFurniture2go.com, ergonomic chair specs include full armrest adjustment details — call 1-800-460-0858.