JH picked up on the segweigh from "proximal acceleration" to "anyspacewhatever", and asked why I chose that particular foot/hand movement. The rotational step cause the L shoulder to go through something that looked like flexion, horizontal abduction, then maybe abduction (sagittal, transverse, frontal). "Troupling" if you will. What I was going after was the pelvis & shoulder moving out of sync. If you remember, I used a similar movement in the "reactive abs" post last August. I could also choose to have the pelvis/shoulder moving in sync, with the shoulder moving a little faster (kind of what goes on in the cocking phase of throwing, or swimming).