Buy computer desks scientifically
1. How does incorrect use of computer desks and chairs affect health?
Different postures, pressure and weight on the spine: sitting> standing> lying down.
When the human body is standing, the average pressure on the intervertebral disc is 100 psi (100 pounds per square inch), while the pressure when sitting is 150 psi, and it is as high as 185 psi when hunched over.
People generally don’t sit in the correct posture, leaning on the table, hunched over, and leaning on their legs. These postures concentrate almost all the weight of the upper body on the 4th and 5th lumbar vertebrae, resulting in uneven pressure on the intervertebral discs.
The resulting hazards include but are not limited to:
Long-term compression of the lumbar spine in certain locations will cause a series of chronic diseases. Sore waist is the most common reaction.
Stooping down leads to a reduction in the space of the chest and abdomen, affecting the function of the respiratory and digestive systems.
Working at the desk with the head down for a long time causes uneven stress on the cervical spine, compressing the neck muscles and stretching, and excessive force on the part of the body, resulting in muscle tension and pain, and shoulder and neck problems.
If things go on like this, the body will not be able to return to its natural posture. Poor sitting posture will continue to aggravate the pain, affecting health and posture.
2. The scientific posture of using computer desks and chairs
If you search for a healthy office sitting posture, most articles or answers will tell you that the posture should be three 90°. With the development of scientific research, this answer is no longer the most scientific answer. Let's talk about the conclusion first, then the principle.
The judgment of a healthy sitting posture is shown in the figure:
If you already have a computer/desk and chair at home, you can also self-check according to these standards
1. The healthiest sitting posture is that the knees and thighs are at an angle of about 135 degrees to the upper body, not 90 degrees
This is a joint study by Canadian and Scottish experts. Why is it 135 degrees? Because the large angle allows you to tilt the pelvis forward and maintain the natural curve of the lower back. This can reduce the pressure on the intervertebral disc, and the surrounding muscles and ligaments can be relatively more relaxed.
If you sit too low, your feet will easily be placed in front of you naturally, rather than on the sides, inadvertently creating a hunched posture, causing your back to bend abnormally.
2. The ideal desktop height is just below your elbow and forms a 90-degree angle with your elbow. Your elbows should be relaxed on the elbow support pad. A table that is too high or too low can cause shoulder and neck problems.
3. When looking up, the line of sight is the upper edge of the computer screen. No matter how big the screen is, it is the upper edge. The best condition is to look up completely without lowering the head. This will relieve the pressure on the cervical spine.
To maintain the above-mentioned healthy sitting posture, the most scientific solution at present is to choose a saddle chair, and the best partner of the saddle chair is an electric lift table that can adjust the height of the table top.
Why is the scientific solution the saddle chair?
Because the forward-leaning design of the saddle chair can promote the body to maintain a natural posture, the spine can naturally maintain upright and balance, and the surrounding muscle groups can effectively relax. In addition, it can relieve the pressure on the lungs and abdomen due to chest hunchback. Promote work efficiency while maintaining good health.
Why is an electric lift table the best partner for a saddle chair?
If we want to maintain a healthy sitting posture so that our elbows and the tabletop form a 90-degree angle, the table height must be able to adapt to everyone's height. The tables on the market usually have a fixed height. If there is no table with a matching height, the neck will be stretched too much, which is not good for the cervical spine and neck muscles.
In addition, another big advantage of the electric lift table is that it can support alternate sitting and standing office, which not only allows you to have a healthy sitting posture, but also helps you to ease sedentary sitting.
Therefore, if I want to recommend, I only recommend electric lifting tables. All the money is spent, why not buy a good one?
We understand the prerequisite for purchasing, so let's talk about how to choose a computer desk.
3. How to choose a qualified computer desk?
The design principle of the computer desk should conform to the principle of ergonomics. Simply put, the size of the computer desk should be in harmony with the height of the user, the height of the chair, and the body shape.
Dimensions, disassembled, are three elements: length, width, and height. For computer desks, the important levels of the three elements are:
High: Decide whether the user can have the correct sitting posture.
Length: Determine whether the arm can be stretched and ensure space for movement. Good planning of storage space brings better office experience
Wide: Decide whether there is enough space on the desktop for arm support, and work more effortlessly