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For example, high blood glucose levels, called hyperglycemia, can boost the number of breathing movements. Conversely, hypoglycemia can reduce the number of fetal breathing movements. Tobacco use is also known to lower fetal breathing rates. Fetal breathing may help tone the muscles in preparation for breathing movements once the fetus is born.
Kristofer Schipper notes that, "embryonic breathing is not a late development in the breathing exercises, but has always existed under different names" (1993: 242). As Daoist adepts began to practice taixi embryonic breathing, "things got to be horribly varied and complicated", they developed myriad, and sometimes contradictory, techniques such as the "holding of breath, slowing of breathing ...
The Bradley method emphasizes that birth is a natural process: mothers are encouraged to trust their body and focus on diet and exercise throughout pregnancy; and it teaches couples to manage labor through deep breathing and the support of a partner or labor coach. [1]
"Childbirth educators" are instructors who aim to teach pregnant women and their partners about the nature of pregnancy, labour signs and stages, techniques for giving birth, breastfeeding and newborn baby care. Training for this role can be found in hospital settings or through independent certifying organisations.
Fernand Lamaze visited the Soviet Union in the 1950s, and was influenced by birthing techniques which involved breathing and relaxation methods. [3] The Lamaze method gained popularity in the United States after Marjorie Karmel wrote about her experiences in her 1959 book Thank You, Dr. Lamaze, as well as Elisabeth Bing's book Six Practical Lessons for an Easier Childbirth (1960).
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According to a study conducted by Whitcome, et al., lumbar lordosis can increase from an angle of 32 degrees at 0% fetal mass (i.e. non-pregnant women or very early in pregnancy) to 50 degrees at 100% fetal mass (very late in pregnancy). Postpartum, the angle of the lordosis declines and can reach the angle prior to pregnancy.
At the end of pregnancy, the fetus must take the journey of childbirth to leave the reproductive mother. Upon its entry to the air-breathing world, the newborn must begin to adjust to life outside the uterus. This is true for all viviparous animals; this article discusses humans as the most-researched example. [citation needed]