[alophysio]

thanks for that garjang - i think you definitely have it right about people not wanting to know!

As for the hypertrophy of the right leg, i think it may be dependent on the rider's dominant leg - the way a bike is set up, i wouldn't think that the left pedal is different to the right pedal since they have to go through the same joints to the cogwheels. When you get tired, you tend to drop the power in the non-dominant leg (weaker leg for want of a better term) and so exercise the "stronger" leg longer and so over time set-up a bulk difference.

Alternatively, the pelvis might also be overworking on the dominant side when you get tired and setting up a similar pattern where the dominant side is overworking. The lists can go on and on!

Good luck and let us know how you go...