I've known Justin since he was about 14. I have worked with him via my website as well as a number of times in person. A VERY good student, i.e., very focused, willing to listen, highly motivated to improve, and works at it in smart ways.
"Very focused". I saw this the first time I worked him in person. Prior to actually hitting, he did a dynamic warm-up routine with the kind of seriousness, focus, and precision that you almost never see from athletes. I said to myself, "this guy's gonna be fun to work with!!"
Though not a big guy, he definitely was [and is] a guy who you know has the intent to swing hard. I worked with him over these yrs. to develop slightly more precision of movement and he has worked at this well I think.
Anyone who knows me knows that I'm a pretty tough grader as regards assessing swings. Justin has indeed created some damn good swings and has very good potential to keep building upon this.
I know he has had some setbacks in the last couple of yrs., but I'll emphatically say that Justin is THE kind of athlete that you want. He's a model citizen as regards doing what he needs to do to develop his true baseball potential.
If I were a college coach, and knowing what I know about Justin, his mindset of working hard and smart and his demonstrated athletic performance and potential are exactly what I am looking for and hoping for.
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Within this it says that ..."the value of the extension torque is quite small." IF you have an understanding/appreciation of the the complexities of ballistic/dynamic THIS statement is VERY revealing.
Here on twitter [and on my cite in much greater detail] I have talked about the very important concept of "interaction or motion dependent torques" wherein joint actions at joint A or being driven by joint actions that are NOT anatomically connected.
Understanding this is, I think, one of THE most important considerations that one needs to understand in terms of REALLY being able to accurately assess and ultimately effectively TEACHING movement development.
I want to make a few comments about "those who studied House [circa 2000]". I was most certainly around when Paul started critiquing some of House's info starting around 2001.
I bought Tom's bk. [1st ed.] on pitching mechanics. So, I am VERY aware of Tom's concepts such as "find the balance point" and "pause at the top." What struck me in these pgs. was an example of ---allegedly --- being ..."out of balance."
An ex., in other words of some type of inefficient postural/loading dynamics. The ex. he cited was Ron Guidry. Now, for the uninitiated Guidry was maybe 5'11" and 160 lbs. And he topped out at....98MHP!!
Let me add here as to the dubiousness of the concept of "riding the back leg" the fact that I have been talking about "cues vs. reality" for over 15 yrs.
The quote of "cues vs. reality" comes from Paul Nyman around 2001. That's about when I first ran across his website. He caught my attention with 2 articles. One was entitled: "Momentum is the most misunderstood thing in all of sports." And: "Cues vs. Reality."
In which he argued that the cues that many instructors use do NOT really describe what hitters/pitchers are ACTUALLY doing, i.e., the cues do NOT describe the actual "underlying realities" that actually create high level movement.
A few yrs. back I was working with a young hitting instructor in the context of trying to help him become a more effective instructor. He was working with a hitter and he kept saying to this hitter..."you need to sit more."
I stopped the instruction and ask the hitter: "Do you actually know what he means?" And the hitter said: "No, I really don't." I then ask the instructor to SHOW the player what he meant.
And what the instructor showed him--from my vantage point of someone who was THE guy who originally defined this term yrs. ago in detail [based on empirical observation AND thousands of hrs. of personally practicing movements],was NOT an accurate description of "sitting."
First let me say that I agree that the bottom clip is a better swing. Simply put it's more efficient. What do i mean by this? Simply put, it's quicker from initiation to contact. Then the question is why is this the case?
To put it into a basic context I have used to analyze elite level hitters: They do 2 things well:1] they create very good bat/body alignment from initiation to contact and;2] they rotate the trunk really well.
Paul Nyman recently cited this as regards how many typically tend to interpret/analyze information: exploringyourmind.com/only-hear-want…
You should read all of it. But I'll cite a few excerpts.
"The information we choose through our attention mechanism doesn’t always have to be the most valid or relevant. We rather try to pay attention only to the things that confirm our beliefs or opinions."
...." we look for environments that reinforce our beliefs. Since everyone around us thinks the same way we do, we believe our opinion is the one that’s right."