[quote=“dm59”][quote=“Roger”]Just because the hips rotate ahead of the shoulders doesn’t mean they’re doing so explosively.[/quote]You got that right!!
[quote=“Roger”]To be honest, I think it is hard to pivot the back foot before the front foot has planted.[/quote]Roger. Look at some of the videos you have and you’ll see that, by the time the front foot has landed, the back foot has “rolled over” almost entirely onto the laces. This roll over happens very late though.
Rotating as early as shown in the photo is just plain wrong. It ain’t rocket science. Nothing complicated or technical here, just that there’s no contribution to the throw. It’s that simple.
[quote=“Chris”]The strange thing is that their hips will be rotating ahead of their shoulders, but there’s something about how they do it (possibly involving what their back foot is doing) that robs them of power.[/quote]Yes, hip/shoulder separation is a key component in velo production but it’s existence alone doesn’t mean anything. Nothing. The most important thing is the effectiveness of the kinetic chain. The engagement of one component of the chain MUST happen at the point where the velocity of the preceding component is at it’s maximum. The timing of this transfer is CRUCIAL. If it’s ONE then PAUSE, then TWO, you’ve lost the opportunity to transfer the maximum amount of the built up momentum. You’ve also lost the opportunity to take advantage of the stretch shortening cycle of the involved muscles.
Look at the pros. The “chain” of events isn’t really discernable when viewed at full speed. It’s an extremely smooth, flowing transfer up. It’s why they’re pros. They just got it baby. They take all of these little, nit-picky details we argue about for years and put them together seamlessly. Efficiently. Effectively. That’s the holy grail guys.[/quote
D.M-- BINGO!!! If the people that read this board read and understand the points you just made things would be alot better for many of them in regards to velocity. Its NOT if one does a certain mechanic its HOW WELL and WHEN they do it! Your dead on with your concept of chaining and how the chain should transfer energy. Wasted time equals wasted energy. Wasted energy equals loss of optimum potential/performance. Its this simple for the sake of this discussion. The frontside/stride leg is internally rotated as it begins to open or the toe starts to point at the target, allowing the pelvis to unlock/open than the backside/pivot leg pushes/DRIVES the frontside into full external rotation. So as the frontside goes into external rotation the backside internally rotates at the same time this internal rotation is what turns the ankle or laces over, as another poster eludes to it is NOT the frontside pulling the backside along ESPECIALLY if one does find credence in the kinetic chain. It all starts FROM the pivot leg foot which is where EVERYTHING begins. The amount of force one can gather accumlilate/produce sets of the outcome as in how much potential energy they can create. Perhaps better said it ENHANCES what else they do. From a biomechanical standpoint it is ALL internal and external rotations for the most part.