82457acb1a Researchers found that this position isnt very easy on the spine, and is the least recommended position for men experiencing flexion-intolerant pain. (Perhaps the thinking was'If Bob Dole, a politician, can admit he has a problem, maybe I can, too!') Besides, doctors have heard it all and they're ready to help. 1 2 3 . The study showed that this position, in addition to the mQUAD1 variation, is considered to be easier on the spine for flexion-intolerant men. 2001;385:82-87. Bending backwards is called extension. But there might be a way to stay in the game: New research from the University of Waterloo discovered that certain sex positions can be better for those with bad backs.