Is it true that women are not Virgin buttocks down?

I read (site address) that a woman who has never had sex, the ass goes down.

Much is written on the site are as follows:

"But in fact there are hormonal changes in women due to the formation of an orgasm. Phew! Climax of sex. This is the main cause physical changes in a woman. Following orgasm comes an excellent physical change significantly, although not visible in concrete. Namely widening the section below the navel , ie the pelvis (hips) and the wall of the uterus (fetus).

The muscles that support the vagina to be a bit soft due to load changes, thus changing the shape. [Please check!]. Hence there is a myth that women who are not virgins ass down, however this change results vary, depending on the physical activity of each person and the frequency of sexual activity.

The most concrete changes usually occur in women who rarely exercise and often sat. This change caused by muscle tension in fetal extraordinary but hampered by a penis (while having sex) so as to force the inner muscles to stretch beyond the normal (at the moment of orgasm is usually a layer of fetal muscle strain). The muscles are then (due to obstructed) softening or not as tight as before. "

Is it medically a woman whose ass down already had sex? Please given an explanation ya Doc. Thank you.

To investigate the phenomenon must be based on scientific principles. Similarly to trace the phenomenon of "Women who have had sex, whether a decline in her ass (ass)?"

Scientific principles are:

a) The sample should be enough, that sought the many women who have had sex with the same age period;

b) collected are also women who have had sex at the age period and the number of samples equal to the woman who had sex;

c) specified criteria ass drop;

d) and compared (a) and (b).

When the results of the comparison is statistically significant, then we can conclude that they will be true phenomenon. If the result is not significant then the phenomenon is a myth.

Until now the Sexual Medicine of the phenomenon has not been described as a characteristic of women who are not virgins anymore. Just observe your surroundings: "Old Virgin ass down in general because of the aging process (the aging process)".