Research reveals: Women's back is more tough more flexible than that of men

Research reveals: Women's back is more tough, more flexible than that of men
Research reveals: Women's back is more tough, more flexible than that of men
A research from Harvard University reveals, women's back is more tough, more flexible than that of men. And this kind of difference, just reached through the evolution of several million years, in order to be convenient for pregnant woman to continue the activity in a flexible way during pregnancy, in this way the foetus' weight will not make them greatly admire. This result, came from one and studied modern woman, human backbone and contrast of chimpanzee's backbone 2 million years ago. The chimpanzee is most close to the human wild animal. This research report is published in Nature. During women are pregnant, will usually increase weight 25 to 35 pounds. This weight of increasing, has changed women's center - -Make them very difficult to stand upright - -So the pregnant woman needs a back apt to curve. Director and scholar of this research, Catherine of Harvard University. The nurse of White department says: "Pregnant to bring the enormous challenge to women's body. " She says: "Women's health must be adjusted greatly, in order to hold and adapt to the baby in the belly, this kind of change has influenced stability and posture of woman's body. The result of study reveals, the strengthening of increase and lower vertebra of crooked tenacity of the back, women maintain the key of the normal activity during it is pregnant. " Reveal to 19 research which pregnant women carries on, when the pregnant woman stands, will recede, make the bending of the vertebra increase by 60%. This makes weight shift backward, has left top of their buttock. And the reason why this extra mutability can take shape, crooked to happen in the lower vertebra (or the waist district) Three stick vertebra at - -And the man has only two incident and crooked vertebras. The woman's joint is older than the man's too, and extend to the vertebra more deeply - -Thus has improved the support strength of the vertebra. As researcher's vertebra of the ancient more than 2 million years ago, they found that there is a similar difference too between men and women. Another author of the research, Daniel of Texas university. Liberman says: "The life of the women in ancient times is very arduous, the pregnant woman must be while searching for the food and escaping the carnivore, deal with pregnant heavy load. " He adds: "This makes women keeping more flexible figure during pregnancy in ancient times. It is very essential for surviving to be flexible, and seem to be resulted from natural selection. "


|