“BOF”quote:
“Lets get back focused here.”
Focused, It’s the timeline that concerns me, quit readjusting the lens..
quote:
Your comments were that the leg drive had nothing to do with velocity.
No! You did not read what I said, I said that the forwards acceleration gained by initial ball side leg drive was later decelerated to a stop from glove side leg bracing, the legs still play their postural role in allowing you to then signal the contracting drive muscles from the top half to reaccelerate the ball. If you did not have legs you could not use their
rotational contractions later to help accelerate the ball.
quote:
“Tom House has suggested that it may be 20% of the velocity component”
We don’t know this unless you quote him from material that is brought or available here by him! If he did I’m sure it was not a scientific finding and may show he has not studied High speed film or understand what he has actually seen by his continued support of injurious centripetal mechanics.
quote:
“which you challenged”
I have shown you from live high speed video examples as I would do him if he were here.
When you don’t answer the many direct questions like I asked you about the high speed video that I provided it leads you to believe you are still correct apparently and says much more.
quote:
“Bauer, etc that there is an effect on different leg drive on velocity of a baseball”
You said he was slower from the windup pitchers delivery in competition, I agreed by saying because he was standing up straighter and rotating more that it was a preferable mechanic by stepping shorter and allows you to actually use the previously generated velocity from the ball side leg then force doubled now by being able to use the glove side leg to conserve our precious inertia, get it right.
quote:
“I have calculated the energy of a moving body to be substantial enough to be considered”
And again I am saying it was never disconsidered! Just a different mechanic by way of its continuance opposed to stopping, meaning you have showed nothing. Try calculating how much energy it takes to walk one step then stop and you will come closer to a real correlation.
quote:
“when taking into account using simple linear body motions. (in the 70% range) Now you have rightfully pointed out that some of this energy is absorbed at foot contact.”
I have proved by the video with the longest strider and how even this mechanic comes to a complete stop for many frames before the acceleration phase even begins. Read that line again! You might go back and decide when the ball actually starts towards home plate.
quote:
“ The center of mass of a moving human body is somewhere mid stomach +/- (for youth pitchers it is probably higher than old guys like you and me.)”
Body mass when talking about forwards inertia runs front to back not up and down.
quote:
“so when the footstrike happens the mass continues forward”
Take an honest look at the HSvid. and you will see where you have this wrong as the bodies mass is not advancing forwards after foot strike for many frames at all, I’ll count them again if you need me to .
quote:
“and starts rotating more or less around the contact point”
Can you understand that it takes completely different muscle groups to start rotational contractions making this statement also false.
quote:
“I agree that some energy is lost at footstike”
I disagree by the evidence I posted, you have not even answered the questions I posed to you about the video?
quote:
“some portion of it continues to move the body forward”
Late rotation and torso angulations and shoulder and arm contractions count for this restart of forwards body tilt then recovery. No portion of the initial forwards inertia is maintained as witnessed in the video, maybe I should draw in one of those fancy bright vertical lines so you have a reference to see the legs and hips have virtually come to a stop all while the ball is traveling backwards. Look at it.
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“I don’t know exactly what it is but it is probably in the 35-60% range”
Try calculating what you are seeing and you will come up with a grand total of 0%.
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“Lets for argument sakes say it is toward the high side”
Get up off your knees! Lets never talk about what is not happening to confuse the issue.
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“there of course are some losses so by the time it gets to the fingers guess what, bingo it is around 20% as Tom House has suggested”
This means Tom House has no clue what the acceleration phase and its posture when signaled is and when it starts like you are portraying, I think not!. Lets not talk about someone who is not here to defend himself and guess at what he is saying.
quote:
“Thanks Yard you have helped prove Tom right!”
Oh no thank you, now many people are thinking about how Kinesiology actually works and that and many other High speed videos have finally broken down the phases of this destructive pitching motion.
quote:
“Honestly I really did not know what the numbers would work out so well until I sat down yesterday and ran some quick calks and sat down to respond to your post today”
You should have done what I said and took a good long look at the phases of this mechanic instead of figuring out the energy it tales walk one cycle a completely different mechanic.
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“I am sorry but if you can’t understand basic physics”
This is not the problem! The problem is you dodging pertinent questions.
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“remained blinded by the coolaide you have been drinking”
Uh Oh! here comes the negative and personal Marshall talking points you have learned so well. I’ll bet you just could not wait to use snotty language besides I drink Koolaid, coolaide is what this information is.
quote:
“there is not much more I can do to enlighten you”
Until you answer some of those questions you will never understand it and continue to think if I get my son to stride farther than he will gain velocity. Remember this the farther the splits stride the more injurious stress from a lowered mass on the knees, hips and back.
quote:
“show you the error of your ways”
Get your hand off my back and be nice.
I’ve tested all these theories on actual pitchers and glad I did!
quote:
“Been fun though!”
I would think twice about confusing concerned parents about the safest way to proceed, especially when they post about injuries by guessing at what you have been told by others who have had this wrong for so long but at least you are a good sounding board to get this good information out and commend you for that.
Your not afraid to talk about the work stoppage and the frames your missing are you?