Groundbreaking Study Reveals Best Positions to Save Your Spine During Sex (video) University of Waterloo Share Print E-Mail Loading video... Caption Contrary to popular belief, spooning is not always the best sex position for those with a bad back, according to research from the University of Waterloo. For the first time ever, scientists have successfully documented the way the spine moves during sex and discovered exactly why certain positions are better than others when it comes to avoiding back pain. The pioneering study combined infrared and electromagnetic motion capture systems – like those used in the creation of video games – to track how 10 couples' spines moved when attempting five common sex positions. The findings were used to create an atlas, or set of guidelines, that recommends different sex positions and thrusting techniques based on what movements trigger a patient's pain. In this video, Waterloo's Dr Spine – Professor Stu McGill – and the study's lead author, Natalie Sidorkewicz explain how they carried out the research and what they found out. Credit University of Waterloo Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.