R
RayR
Guest
You are way downstream....but once the barrel is launched the hips release and back leg takes over....the swing is over
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The hip joint.
This is an externally rotated position;
You get from neutral to an externally rotated position, from activation of the muscles that connect the pelvis to the femur. They pull the greater trochanter of the head of the femur in a posterior direction, which opens the pelvis if you have weight on the back leg, or twists the toes away from the body, if the leg is unweighted.
You cannot open the hips (externally rotate) by internally rotating the back leg.
Jbooth (any anyone else who likes to play along at home),
When you stand up, feet shoulder width apart, weight evenly distributed, knees bent, facing a wall, toes pointed at wall and hips facing wall... can you move your right thigh (femur) back and forth with IR and ER action? Your feet remain pointed at the wall, the weight remains relatively evenly distributed, and your hips do not turn (nor do they shift laterally) but the relationship between femur and socket changes. Your knee will move in space going from a "knock-kneed" position when the femur is in IR to a "bow-legged" position when the femur is in an ER position. I think this movement is not abduction or adduction as there is no lateral shifting of the hips or shifting of weight, it's just an IR to ER and back to IR movement of the femur in the socket. Are you with me? Can you replicate this movement?
Cheers,
Noontime
From the position that you describe; Moving to knock-kneed is an adduction movement of the femur, and moving the knee out is abduction. To internally rotate, or externally rotate from that position, the foot must pivot.
Not once it is unweighted it can't but prior to becoming unweighted it can.
That is why I asked if you could tell me from the clips provided when does the weight leave the rear leg.
You are way downstream....but once the barrel is launched the hips release and back leg takes over....the swing is over
Are you talking about the front hip being externally rotated?
I guess you missed my answer.
The weight is against the front side, on the front foot, while the swing is still in the lag position.
Hips are turning, and the rear foot gets pulled forward.
As many times i stare at high level swings in kinovea, i can see no great push from the rear foot, the dirt shows the toe is dragging.
The back foot looks like a walk off, from the side of the big toe.
From the quotes i have been reading, some of you think the swing happens before the bat even gets below the deltoid, and pure momentum, carries the rest of the swing through, riding the rear hip.
I love the one legged golfer analogy, like it proves the swing happens all because of the back leg.