To a large extent, yes. Head position (varies with helmet), back curve, hand and arm positions etc. We measure the number of watts saved by various combinations of rider position/rider equipment (helmets/skinsuits etc) in real time and pop the number up on the on-bike screen in real time. Currently moving to doing this out on the road (following validation on indoor velodromes and wind tunnels), kind of fun being able to see this position saves 10 watts, that one saves 15 watts but is too uncomfortable to hold for long etc.
