Truth: This is an advertisement for a foreign toilet product. Deleted the content about the product, the original intention may be to tell you the correct and healthy toilet knowledge. However, this infographic is not scientific. Squat pull can really make defecation less hard and reduce defecation time, but sitting pull is not the chief culprit of various anorectal diseases. It is completely cheating to try to simulate squat pull with your feet on a small bench.
Squatting is really smoother.
The theoretical basis of squatting defecation is superior to sitting posture mainly lies in a muscle called puborectalis muscle. This muscle starts from one side of the pubic bone, goes around the back of the rectum, and then returns to the other side of the pubic bone to form a ring, just pulling the rectal hook, so that the rectum and the tip form an angle forward, which is called "anorectal angle". The anorectal angle of sitting posture is about 80-90, while that of squatting posture can reach about100. Theoretically, the greater the anorectal angle, the more labor-saving defecation is.
Sit down. It has nothing to do with getting sick.
From this point of view, it seems that squatting is better than sitting. And so on, from the conclusion that the anorectal angle of squatting defecation is large, the conclusion that squatting defecation reduces constipation implies a premise that constipation is caused by the anorectal angle is too small. But in fact, although the larger anorectal angle can make defecation less hard and reduce defecation time, the decisive factor of constipation is not anorectal angle.
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There are many reasons for constipation, including:
Age. Constipation is more common in the elderly than in the younger generation. However, diseases and drugs are also a very important inducement.
Suppress one's will
Changes in living habits, such as holidays and outings.
Hormones change during pregnancy or menopause.
Take certain drugs, including antacids, powerful painkillers (such as morphine) and some antidepressants.
Some diseases, such as Parkinson's disease and diabetes.
There is no mention of the role of anorectal angle.
It should be said that constipation is a pathological state, and it is a feeling of illness before defecation. Squat posture may partially relieve the symptoms of defecation difficulty, but this does not mean that squatting defecation will not cause constipation, or sitting defecation will cause constipation. Just as hot water in the abdomen can relieve dysmenorrhea, it does not mean that dysmenorrhea will occur without hot water in the abdomen during menstruation. People who don't have dysmenorrhea, no matter whether hot water is enough or not, will not have dysmenorrhea.
Because small anorectal angle will not cause constipation during defecation, the logical chain of "sitting posture causes constipation due to small anorectal angle = sitting posture causes constipation" is broken. That is to say, people who are constipated will be constipated regardless of sitting position or squatting position, and people who are not constipated will not be constipated regardless of sitting position or squatting position, but squatting position may make people who are constipated more relaxed.
Other anorectal diseases mentioned in mythology-hemorrhoids, colitis, appendicitis and colon cancer are similar, and the different anorectal angles of squatting posture and sitting posture are not the reasons for these diseases.
Of course, this does not mean that squatting and defecating are useless for preventing diseases. The advantage of squatting defecation is that the strength is small and the defecator consciously empties for a short time. For people with high risk of coronary heart disease and stroke, defecation force is an important cause of cardiovascular and cerebrovascular accidents. Usually, for people with high risk of myocardial infarction or stroke, doctors will use some laxatives to reduce the force of defecation to reduce the risk. Squatting can reduce the exertion of defecation, which is theoretically beneficial to prevent accidents during defecation. The high-risk groups of cardiovascular and cerebrovascular accidents are mostly middle-aged and elderly, and their physical strength is relatively weak. However, when squatting, the stress on the legs and knees is relatively large, which is prone to accidents such as slipping and fracture. Therefore, for them, squatting posture may not have great advantages over sitting posture.
Step on the bench? Keng your dad
In mythology, it is suggested to step on a small bench with your feet to reduce the angle between your thighs and torso and simulate the effect of squatting and defecating. Does this work? Unfortunately, the answer is no.
Some scientists have studied the anorectal angles of three postures: normal sitting posture (90 degrees between thighs and trunk), sitting posture with legs up (60 degrees between thighs and trunk) and squatting posture, and found that the anorectal angle of squatting posture is obviously larger than that of sitting posture, but there is no difference between the two sitting postures. Another study thinks that the emptying time and abdominal force of squatting defecation are less than that of sitting posture, but there is no difference between sitting posture and leg lifting posture. Therefore, although stepping on a small bench can narrow the angle between the thigh and the trunk, it is not helpful to straighten the anorectal angle, and it is naturally useless to help reduce the pressure of defecation.
Anorectal angle in three defecation postures. The anorectal angle of squat posture is the largest, but the anorectal angle of normal sitting posture (90 degrees between thigh and trunk) and leg lifting sitting posture (60 degrees between thigh and trunk) is basically the same.
Conclusion: The rumor is shattered.
Squat defecation can really make defecation smoother, but it has no effect on preventing constipation. Sitting and defecating will not increase the risk of hemorrhoids, constipation, colitis, appendicitis, colon cancer and other diseases. In addition, squatting posture can reduce abdominal exertion, which may have certain advantages in preventing cardiovascular and cerebrovascular accidents during defecation, but improving leg sitting posture is completely useless.