The Function of Office Chair Armrests

The functions of office chair armrests are mainly reflected in three aspects: providing support and relaxation, reducing muscle burden and preventing strain, and adapting to different scenario needs.

Providing Support and Relaxation

In office or writing scenarios, reasonably adjusting the height and angle of the armrests and moving them forward can provide effective support for the arms, relax the shoulders, and help users focus and complete work more efficiently. During lunch breaks, adjusting the armrests to an inward-V shape to support the elbws can prevent the hands from hanging down for a long time, avoid shoulder discomfort, and help users enter a deeply relaxed rest state. When reading, adjusting the armrests to an appropriate height and using the inward-V shape can support the elbows and make the reading process more relaxed. When watching dramas or playing mobile games, since a large range of elbow movement and maintaining a posture for a long time are required, widening the armrests and using the inward-V shape can meet this need.

Reducing Muscle Burden and Preventing Strain

Armrests can be regarded as the 'invisible shoulder protectors' of office chairs. Even a height deviation of just 1 centimeter can pose a risk of strain. Adjusting the height of the armrests can reduce muscle burden by 50%. If the height of the armrests is inappropriate, it can cause a series of health problems. For example, if the armrests are too high, it will force the scapular girdle muscles to remain in a contracted state continuously, which may lead to muscle fibrosis and joint adhesions. For instance, a 32-year-old designer went from 'occasional shoulder soreness' to 'difficulty raising the arms' within half a year due to high armrests and was eventually diagnosed with frozen shoulder. If the armrests are too low and not used, having the arms hanging in the air will put more pressure on the shoulder muscles. Long-term suspension will lead to an imbalance in the muscles around the cervical spine and accelerate cervical spine degeneration. For example, a 28-year-old programmer developed a straight cervical spine curvature and experienced pain when shaking the head due to not using low armrests.

Adapting to Different Scenario Needs

Currently, there are various types of ergonomic chair armrests on the market. Fixed armrests have relatively limited functions, while multi-dimensional adjustable armrests can be adjusted in terms of height, front-back position, and inward-outward angle, etc., and can be adjusted according to different needs during work. Retractable armrests are convenient for storing when not in use, but their functions are not as flexible as those of multi-dimensional adjustable armrests, and frequent folding will increase the wear and tear on the armrests. In addition, there is also the Sihoo 8D armrest, which has 8 independent adjustment dimensions, including lifting, 360-degree rotation, armrest distance, front-back tilting, rear-end folding, and rear-tilt linkage, etc. The upward tilt can support the wrist and keep the arm hanging naturally.