[slicer mcgolf]

TGM has been fairly content with the 4 accumulators, however, with the increased science behind movement patterns and ground reaction forces....... could the knees be considered an accumulator?

All accumulators create stored energy which is then released: flexion and extension of the knee joint.

All accumulators have pressure points in which they are driven into or against: the feet into the ground!

I had this discussion with an oldschool TGM'er who described the knee antion as part of what drives the pivot, and therefore is part of ACC4. It made sense.. at the time.

ACC4 is more of a rotaty pressure which increases not because the arm is forcing itself on the chest, but because the ribcage/chest/upper torso is driving into the arm.

If the knees flex and extend along a vertical plane, then can assist the rotation but it isn't fully rotation.

So what would make them NOT be considered a Power Accumulator?

Would Brian Gay's impact position (and Ricky Folwer BTW - legs almost fully extended) not show us that he has increased the angle in his knee flex therefore using the ground to accumulate and release energy ?