How do the height and seat angle of the chair frame affect the health of sitting posture?
Publish Time: 2024-08-17
The height and seat angle of the chair frame are important factors that affect the health of sitting posture. They have a significant impact on the comfort of the human body, the pressure distribution of the spine, and blood circulation.
The appropriate chair frame height is essential for maintaining a good sitting posture. If the chair frame height is too low, the knees will be higher than the hip joints, causing pressure on the back thigh muscles, affecting blood circulation. Sitting in this position for a long time can easily cause leg numbness and swelling. On the contrary, if the chair frame is too high, the feet will be suspended in the air, unable to stably support the body, increase the burden on the waist, and easily cause waist muscle fatigue and pain. Generally speaking, when sitting, the feet can be placed flat on the ground, the thighs are parallel to the ground, and the knee joints are about 90 degrees. This is a more ideal chair frame height.
The seat angle should not be ignored. A slightly forward seat angle can cause the body's center of gravity to move forward naturally, which helps to maintain the normal physiological curvature of the lumbar spine and reduce the pressure on the waist. For example, a seat that is tilted forward about 5 to 15 degrees can help users better maintain the straightness of the spine while sitting and reduce the tendency to hunch over.
However, if the seat angle is too forward, it may cause the body to slide forward, increase the friction between the thigh and the seat, and cause discomfort. On the contrary, a backward seat angle will cause the body's center of gravity to move backward, and the waist will not be adequately supported, which may easily lead to excessive bending of the lumbar spine and increase the pressure on the spine. Long-term use may cause problems such as lumbar disc herniation.
In addition, the combination of chair frame height and seat angle is also very critical. An inappropriate combination will break the body's balance and affect the stability of the sitting posture. For example, a higher chair frame with an overly forward-tilted seat may make people feel unstable and unsafe when using it.
In order to ensure a healthy sitting posture, you should fully consider your body size and usage needs when choosing a chair frame. For people who need to sit on a chair for a long time to work or study, the appropriate chair frame height and seat angle can effectively prevent problems such as scoliosis and cervical spondylosis, improve work efficiency, and help maintain physical health.
In summary, the height of the chair frame and the seat angle have a profound impact on the health of sitting posture. Sufficient attention should be paid when choosing a chair to ensure that a correct, comfortable and healthy sitting posture can be maintained.
