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Backrest angle: 103-112 degrees. The angle between the back and the cushion also serves two purposes, preventing the seated human body from sliding forward and guiding the bend of the lumbar (includingSacral vertebraeLeaning on the backrest.
This angle of 115 degrees is appropriate for the condition of the human spine, and it produces a shape that is closer to the natural waist. When sitting, the optimal angle for reading is 101-104 degrees, and 105-108 degrees is more relaxing. Almost everyone has the experience of low back pain, and most of them are unknowingly caused by poor posture or improper exertion, resulting in many inconveniences in life and the cost of medical treatment.
Many studies have pointed out that low back pain has become an "epidemic".Male-to-female ratioQuite。Countries in Europe and the United States have a higher proportion of low back pain. For example, back pain in the United Kingdom and the United States ranks second among all the reasons for seeking medical treatment, after colds, and it is the limited movement of young adults in the United States and the sick leave of British employees.
The number one reason; Sweden.
14.8 million days of work are lost each year due to low back pain. In fact, the main reason for these situations is that we don't know how to protect our lower back.
The first thing to do is to choose a good chair. Different chairs serve different purposes, and the chair that is best for operating a computer is not necessarily suitable for writing. ElectedIt is important to choose a suitable chair for work, and the selected chair should have a good support effect on the lower back.
Choose a chair to sit on the knee joint.
It should be slightly higher than the hip joint.
The chair should be chosen for which the feet can rest comfortably flat on the floor. The chair you choose should sit with your feet on the ground. (It can not only reduce the pressure on the lower back, but also avoid the rotation when sitting, which can stretch the lower back.)
When choosing a chair, you should also check: the height, depth, width of the chair, the inclination of the backrest, the shape of the support, the angle and height of the chair and the backrest, the height of the armrests of the chair, the distance between the armrests。In addition, if the height of the chair cannot be adjusted, the work surface can be raised or lowered to fit the height of the chair, or it can be cushioned with a footrest or a box with a footrest; If the back of the chair does not support the lumbar area, a pillow or soft cushion can be placed on the back.
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Adjusting the backrest of the chair is more appropriate at 115 degrees from the perspective of the situation of the human spine
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The optimal angle for the swingarm and chair is 103 to 112 degrees.
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I think the best angle to rely on is about 15 degrees, which is not harmful to the body and very comfortable.
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105-108 degrees is more relaxing, it can produce a shape that is more ergonomic close to the natural waist, the best angle for reading is 101-104 degrees: 103-112 degrees, this angle is more appropriate at 115 degrees, the angle is about 100 degrees, so the back of the comfortable work chair is curved.
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The angle between the back and the cushion also serves two purposes, preventing the seated body from sliding forward and guiding the lumbar bend (including the sacral vertebrae) to lean on the backrest, which produces a shape that is closer to the natural waist.
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This angle is more appropriate at 115 degrees, and the angle is about 100 degrees, so the back of the comfortable work chair is curved.
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The optimal angle between the back of the waist and the backrest of the chair is 110°.
The angle of the backrest reaches 90°, and the lumbar does not need to be padded, and the pressure in the lumbar intervertebral disc is the greatest at this time; However, when the backrest angle reaches 110° and a cushion is placed at the lumbar spine, the pressure on the lumbar disc can be minimized.
Buying a car and choosing a seat is like buying shoes, you must pay attention to comfort. Some sedans have seats that look beautiful after being decorated with colors and fabrics, but they are not necessarily suitable for the driver. Comfort is far more important than good looks.
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Generally speaking, it is.
I also do it, I think the best time to sleep is different for everyone, sometimes sleep 7 hours a day and still very sleepy, sometimes sleep more than 2 o'clock in the morning, sleep 5-6 hours the next day is still very good. The IT industry is an industry with heavy brain use, and it is recommended that you take the time to do more aerobic exercise, which may help you, and it is recommended that you go to bed around 11 o'clock at night, so that you generally do not get up at night and will sleep well.
More teaching ** has been introduced, this is a very professional skill, if you don't know how to spray or something, the optimization is very proficient, and you can keep up with the master. In fact, compared with ordinary drift, the time of pressing the drift key is shorter, (let me make it clearer, in fact, it is to gently click the drift key, but the arrow key should be pressed all the time, if the arrow key is not held down, it will become a small drift.) You'll notice that the corners of your car aren't very big, but the gas you get is about the same as a normal drift. >>>More