Quote Originally Posted by zencentury View Post

It could also be a matter of stem height or reach, couldn't it?
Absolutely. This is particularly a problem if your using tri bars on a bike that has a traditional road geometry.

Tri bikes (and TT bikes) have a shorter effective top tube to bring the rider forward over the wheel, they also have a steeper down tube angle which creates space around the anterior groin area. When you put tri bars on a road bike the rider is almost always bent too much at the hip and too stretched out which puts pressure more towards the front of the pelvic floor. It's also a good Idea to tip the nose of the saddle slightly downward.