Years ago, I ran across a quote from the great sports scientist Mel Siff that I think is a very simple but effective analogy explaining complex ballistic activities like throwing/swinging.
He said: "Complex ballistic sporting activities are like a symphony of muscle actions."
The implications of this are at least 2-fold.
It implies that complex sporting behavior of movements and muscle action create a kind of synergy that is greater than the sum of the parts.
BUT. It also implies that if even one of the components are "off" in some way [think of a tuba going off ill-timed for ex.] the overall sound of the will suffer [potentially quite a bit].
So, that being the case, I think this analogy simply --but very astutely --captures the holistic quality of the performance. While understanding that EACH component has be working at a high level in order to create optimal performance.
A similar ex. of this analogy can be found in an ex. coming from the research of psychologist Anders Ericcson [known in some circles as the father, so to speak, of the concept of "deliberative practice."
In one of his books I have, he talks about the comments from a high level golfer that he interviewed. Paraphrasing, when Eric ask him to explain his thoughts on practicing he said:
"Well, I try to understand the whole swing really well, but I also try to understand how each of the parts fit within the whole."
I think that this is a VERY smart way of trying to think about practicing/developing. Both from a player and teacher perspective.
And it is a kind of perspective that I have tried to utilize ,i.e., I try to see the whole, but I also try to see how the various components can best "fit", so to speak, to develop better enhance the entire movement.
In other words, you try to see the whole in the context of the parts of the whole, AND you try to understand the parts in the context of trying to understand the whole.
Thus, the analytical framework involves a dynamic interaction of understanding holistically and understanding individual components [particular joints or muscles, or particular segments like one leg, or one arm ,etc].
...."centrifugal force-induced elbow extension motion"..
This statement very much relates to what I have talked about MANY times as regards the concept of "interaction" or "motion dependent" torques.
Meaning that from a CAUSAL perspective, joint actions you see ---and THINK --are a direct result of that joint, are, in fact, THE RESULT of OTHER joint actions [typically happening at a more proximal region to the hips or trunk].
From both an analytical and teaching perspective, this understanding is vital in terms of understanding how the body actually works in the context of swinging/throwing.
I grew up with 2 hitting idols: Williams and Aaron. I heard back then that Aaron had quick and powerful wrists. Thus I did I shit load of wrists curls starting when I was about 9yrs. old [I used a small wooden bar with a rope and weights attached].
I will say that, as a result of this, to this day my forearm musculature is pretty damn impressive!
But. As it turns out --as I learned yrs. later [and unfortunately after the fact ,i.e., dammit Paul Nyman why the hell could you not have been born yrs earlier!!]
the wrist strength ain't got much to do with how Aaron did what he did!!
Over the yrs. I have heard from many that one needs to create alot of dynamic loading to create a high level swing. These arguments have taken many forms over the yrs. e.g., "one needs to create "the move" [really amounts to simply creating some degree of eccentric --twisting
..of the hips]. Or, one HAS to create a "running start" of the bat [what ever that means exactly!!] Or, that one needs a dynamic leg kick [ok...I see...lifting--flexing- the lead leg will, ipso facto, create a high loading/high level unloading.
Or, a high level swing is primarily a function of variously manipulating the back arm ["top hand torque", proper "slotting", some kind of ill -defined "snapping" of the back arm]...etc,etc., ad infinitum.
About 10 yrs. ago in my obsessive search for good info about "how the body works" in the context of swinging a bat, I ran across a retired physician named Jeff Mann. After retiring he turned his attention to trying to understand the golf swing.
The link to his site: perfectgolfswingreview.net
I'll quickly add a couple of points before going further: 1] I did then and do now now understand that there are some pretty clear DISTINCTIONS between a golf swing and a baseball swing.;2] I have never swung a golf club.
Growing up when and where I did [basically Pasadena Tx in the early 70's] ,if you were caught playing golf or soccer, you were likely to get your ass kicked!!
Those who are pretty familiar with "my stuff" know of my thoughts as regards how I think focusing on the lead arm/torso linkage is a potentially KEY method in overcoming many typical flaws, e.g., bat drag, back arm pushing tendencies, poor rotation, poor swing plane.
Here's a golfer swinging with just the lead arm:
He hits the ball about 300 yards. Note the alignment of the lead arm at the peak of the takeaway, initiation of the downswing, and at lag. It is tight along the shoulder line and perpendicular to the spine.
This kind of geometry [alignment] is VERY similar to MLB hitters! Why is this good?
I recently received a msg asking about a recent tweet as regards the back leg flexion action. An action, I argued CAN help facilitate ["free up" as I sometimes say] the hip rotation.