Evidence - It's all around...

Is there research to back that up? There are questions that trigger my gag reflex and - the research question is one of them.
(I won't bore you with the rest of the list)

Should things be researched? Yes
Should I wait for that research before acting? No - Now use your judgement here - because there isn't any research proving that a parachute prevents you from meeting the ground at an extreme rate of speed but that doesn't mean you shouldn't use one! So I think I will use the parachute and wait for research to catch up with the "real world" experience. But there are things I will wait for research on - like some of the experimental drugs coming down the pipes from the pharmaceutical companies.

Physics can prove that a bumblebee cannot fly. It is impossible according to the physics "numbers" - but (having been stung by one) I can tell you that they do in fact - fly. Science actually has a few more of these paradoxes - Lumbard's paradox for the functioning of agonist and antagonist muscles that cross two joints and have opposing actions at those two joints during a movement- (correct me if I have the paradox wrong - I got a bit sleepy and dazed reading about it). But like the bumblebee - I have stood up from a seated position and can in fact tell you that my muscles performed opposing joint actions. A fabulous thing the human body!

Maybe it is a leap of faith - maybe it is the knowledge that good research is VERY hard to come by - maybe it is the fact that research lags WAY behind what is actually being applied in the world of exercise - but I continue to experiment on myself and let real world results speak to me - instead of waiting for the "proof" to be handed to me from a study.