[quote author="Jeremy Richmond" date="1313070631"]
An exercise like the glute bridge will hardly transfer to sprinting; its performed such that the angles of force through the leg are much less than 62 degrees required in the block start up to 85 degrees or so at top speeds.
In addition, for any exercise to transfer well the muscles must be recruited in the same pattern as would be required in sprinting. Antagonist and agonist recruitment patterns must be easily replicable in sprinting which requires reflexive recruitment; adaptations within the CNS will follow
The force through the legs… are you refering to knee joint angles.. not sure i understand your comment fully. Anyways, yes angles a very different. Glut bridge only replicates hip extension.
I am not advocating it will transfer well to sprinting cause i did not see any data on it. And i agree on your statement on a theoretical basis that it will not transfer well.
Anyways i am also pretty sure that key to increased maxV speed is not to find exercises that have optimal intermusculare recruitment patterns. I think Frank Bosch disagrees.[/quote]
Force angle is from where the force is applied through the body centre-of-mass. i.e. from the balls of the foot through a point near/inside the lower abdomen. A glute bridge performed with a more upright body (angled back 5-10 degrees) would be better. Even better if it a single leg angled glute bridge plyometric jump squat; now there’s a secret I thought I would never share.