Real contractions of orgasm

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Eleven nulliparous women manually self-stimulated to orgasm, each on three separate occasions. Pelvic contraction pressure was measured by an anal probe and a vaginal probe simultaneously. Near the perceived start of orgasm, a series of regular contractions began in nine of the women. Anal and vaginal contraction waveforms were synchronized with each other, and the same number of orgasmic contractions occurred in each lumen. Anal pressure had a higher resting baseline and greater amplitude contractions than vaginal pressure. The perceived start of orgasm did not correspond precisely with the onset of regular contractions.
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Orgasm Contractions Porn Videos

Pelvic muscle contractions during sexual response can be monitored conveniently by the anal probe method described. Eleven young adult male subjects were each recorded for three sessions of masturbation to orgasm. Electrical signals from an anal pressure probe were automatically digitized by computer.
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Vaginal contractions are contractions of the pelvic muscles surrounding the vagina , especially the pubococcygeus muscle. Vaginal contractions are generally an involuntary muscular response to sexual stimulation , including sexual arousal , and are commonly most intense during sexual stimulation and culminating in orgasm. Though usually an involuntary response, some women can control the muscles of the vagina to perform vaginal contractions at will. Vaginal contractions enhance the sexual experience and pleasure for both parties during sexual intercourse.
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