Despite the fact that it ’s happening all the time all over the humanity , there ’s a average bit that   researchersdon’t knowaboutsex and pregnancy . A group of sexual urge - pondering scientists decided to take on a few relentless pregnancy myth , and , introduce their body of work at the one-year group meeting of theEuropean Society of Human Reproduction and Embryology , it reckon like they ’ve busted another one – namely , that layer relaxation after insemination increases the chance of a successful innovation .

A squad of researchers at the VU University Medical Center ( UMC ) in Amsterdam decided to test this old wife ’ tale by randomly assigning 479 women receiving intrauterine insemination ( IUI ) – a appendage wherein sperm cell cells are directly interject into the uterus – to either post - IUI motion or 15 moment of bottom residue .

The absolute majority of cleaning woman undergo IUI treatment , many of which completed several round of it . In sum , 2,000 IUI cycle were performed . As it turns out , pregnancy pace of the bed respite group were around 32.2 percent , whereas those that stood up immediately afterwards and had a bit of a ramble around the way had an ordinary success charge per unit of 40.3 percent .

So although it may seem that the opposite of the quondam married woman ’ story is actually true , these rates are n’t divergent enough to be statistically significant . Overall , then , there seems to be no benefit in doing either after being inseminated .

As reported byMedical Daily , it come along that this myth has actually been plunk for by aprevious subject field , in that up to 15 minutes of quietus after IUI appeared to give bailiwick participants a cost increase in their ability to get fraught . However , these results were based on a single unit of ammunition of treatment , and only in after three to six rounds of IUI are pregnancy rate significantly put forward , by as much as 80 percent . Other small - scale study lean to agree with these finding , though , which means this new subject is in disagreement with the preexisting lit .

“ It was these old written report showing a benefit of bed rest which instigate us to perform this study , ” Joukje van Rijswijk , an expert in tocology and gynecology at VU UMC , articulate in astatement . “ Our goal was to replicate the results . There ’s always a possibility that a plus outcome in studies is the result of chance . ”

Rijswijk points out that many other study show that sperm cells reach the fallopian tubes five second after initial insemination occurs , and that they can survive for several days in the womb . “ Why should bed rest period involve that ? There ’s no biologic account for a positive effect of immobilization . ”

Although she can not be certain whether instinctive conception methods – sex , essentially – follow by layer relief would ameliorate the fortune of a successful pregnancy , Rijswijk and her team are very surefooted about their study looking at IUI . “ We believe our result in such a gravid randomize trial are solid , and sufficiently secure to provide the good word for layer rest obsolete , ” she concludes .

Mythbusted , then ? It ’s depend likely .