As I have argued for yrs. good hitters know how to create movement that facilitates good hip rotation.
As I have argued, the legs do not CAUSE good hip rotation. But they can help or hinder hip rotation.
Here's 2 clips of Bonds /Kent:
As I have argued, the legs do not CAUSE good hip rotation. But they can help or hinder hip rotation.
Here's 2 clips of Bonds /Kent:
Note how quickly the back knee flexes --as they go into foot plant. This can help to "free up" [my term] the back hip rotation. Why?
Well, creating this quick flexion of the knee/ankle that in and of itself, facilitates a greater ease of back hip rotation. That's a kinesiological argument. The physics argument is that the knee flexion results in the upper leg[the thigh] to get CLOSER to the center mass .
This REDUCES the inertia of that segment in the context of the hip region overcoming angular inertia.
In effect, the knee flexion causing the upper thigh to become closer to the center of rotation facilitates a version of the "figure skater" effect.
In effect, the knee flexion causing the upper thigh to become closer to the center of rotation facilitates a version of the "figure skater" effect.
That physics concept is typically applied to the figure skater increasing rotational speed [angular] via tucking the arms more into the body [closer to the center of rotation]. Same concept can be applied to the back leg flexion!
@threadreaderapp unroll
• • •
Missing some Tweet in this thread? You can try to
force a refresh
