Originally Posted by
Brian Ratliff
But see, this is just wrong. What you really mean is that clipless does not increase pedaling efficiency under steady state pedaling conditions; it most certainly allows for more power into the drivetrain.
Right, and the study clearly states this in their conclusions,
"Although our results suggest that actively pulling on the pedal reduces gross efficiency during steady-state cycling, there may be situations during which an active pull is beneficial in terms of adding power to the crank"