Interestingly, cycling (track sprint) is a strength sport, unlike endurance cycling, and we do a lot of overgeared starts etc to build strength on the bike - or rather, teach the body to use the muscle we've built in the gym, on the bike. That's what I think is going on anyway. I don't think that, discounting novice effects, you can sufficiently overload the body on a bike to force any significant muscle gains. That's where squats and deadlifts come in to play, and I *think* that using the gym for general strength and then doing OTB strength and power work is the most effective way to train.
The hard part is finding *any* studies to support any particular methods (that agree or disagree!) that aren't so deeply flawed that to cite them is laughable. It's all done on gut feeling, experience, hunches and anecdotes, as far as I can tell anyway.