The Hazards of Office Chairs
The hazards of office chairs are mainly reflected in safety risks, chronic damage to the lumbar and cervical spine, muscle strain and pain in the back, shoulders, and neck, obstruction of blood circulation in the lower limbs, and reduced work efficiency and concentration.
Safety risks: Some office chairs on the market have quality issues, such as backrest breakage and bolt failure. These component failures can cause users to fall and get injured. Low-quality gas springs may explode due to factors like thin tube walls, impure inert gases, or the use of compressed air instead of inert gases, as well as excessive heat generated by frequent seat adjustments. In addition, if the tube walls of the five-star base of a swivel chair are thin and have poor strength, it may break during daily use, causing the user to fall.
Chronic damage to the lumbar and cervical spine: Sitting for long periods in a chair that lacks effective lumbar support and fails to conform to the natural physiological curve of the spine can leave the lumbar spine in a suspended or incorrectly curved state. This leads to uneven pressure distribution on the intervertebral discs, causing issues such as lower back pain, weakness in the back, and numbness from prolonged sitting, and accelerating the aging process of the spine. At the same time, to accommodate an ill-fitting chair or screen position, users may unconsciously lower their heads and lean forward, placing a huge burden on the cervical spine and resulting in a high prevalence of cervical spondylosis among young white-collar workers.
Muscle strain and pain in the back, shoulders, and neck: On a chair without proper support, to maintain body stability, the muscles in the back, shoulders, and neck remain in a state of continuous tension and compensatory contraction. This sustained static load far exceeds the muscle's capacity, leading to muscle fatigue, lactic acid buildup, and subsequent soreness and stiffness. Over time, this can develop into chronic muscle strain, causing severe pain even after short periods of sitting.
Obstruction of blood circulation in the lower limbs: Sitting for extended periods, especially if the seat cushion is too deep or the height is inappropriate, causing the legs to curl up and be compressed, can seriously affect the venous blood return in the lower limbs. This results in discomfort such as heaviness, numbness, and swelling in the legs. In severe cases, it may even increase the risk of deep vein thrombosis.
Reduced work efficiency and concentration: Physical discomfort directly interferes with work performance. Frequent lower back pain makes it difficult to concentrate, requiring constant adjustments in sitting posture to seek relief and disrupting the work rhythm. Fatigue caused by poor blood circulation and the need to get up and rest due to pain both lead to decreased work efficiency and reduced concentration.
