"I wonder has anyone worked out why a DVD in slow motion the strides look colossal. It doesn't affect the height just the length of the steps. But isn't that the way to go if you want to see what is really happening."

Perhaps because a dancer being artifically displayed at a slow speed appears to take gravity-defyingly large strides. We could not emulate that size of movement at such a slow speed, because moving slowly we would fall too far and too fast if we spent so much extended time in unbalanced phases.

Be we can learn to create those large movements that the speed at which they were actually danced though. Then we will spend the same amount of time off balance as the dancer on the recording did, and fall a comparable distance and rate. Assumign we are strong enough and have the skill to synchronize our movements the same way that is.