On Apr 23, 12:04 am, Evan <
evan.ye...@fuse.net> wrote:
> I'm gonna try my hand at an explanation to see if it makes any sense.
> Take what I have to say with a grain of salt, as I've been doing this
> far less than many people on these boards. In addition, if I say
> anything that you guys disagree with, let me know so I can learn what
> I'm doing wrong! :)
>
> The concept of 'dropping power' in GC is a bit of a misnomer, as it
> should probably be named "dropping/rebounding power'. I suppose that
> would be a bit too cumbersome a term, though.
I think GC makes this distinction quite clearly (I say this as an
outside who would be confused by this had it not been clear), but of
course you are correct it is a bit of a misnomer and perhaps a more
precise term might be found and that MIGHT lead to better or quicker
understanding for some people who are trying to learn this.
> While most proficient
> martial artists recognize the value of getting one's body weight
> behind a strike, I found that this concept of 'rebound energy' really
> increased my striking power significantly with using far less effort.
Actually the key is rapidly transferring energy (i.e. IMPACT and
MOMENTUM transfer), and "getting body weight" into a blow is but one
of several ways to do that. You can get body weight (and momentum)
into a punch by simply moving forward (this frequently has negative
effects like leading to over-commitment or making it possible for the
opponent to avoid you like a matador side-steps a bull.)
You can get more impact by moving the weapon (e.g., fist/hand)
faster. There are several (at least) other ways.
> More importantly, the concept is backed by good physics, rather than
> the nebulous concept of 'chi' that seems to permeate a lot of the
> internal arts.
I generally think of "Chi" as being merely a LABEL for using proper
body mechanics, especially when those mechanics are actually too
complex to analyze mathematically but are testable empirically.
It's not magic (in the supernatural sense) but it is a sometimes
useful term for the magic (in the sleight of hand or illusion) sense
that many martial artists can perform.
I am philosophically a scientist. There are however some things I can
do which are difficult to explain. I am convinced there ARE
explanations and I am looking to find those, but this won't keep me
from DOING those things in the mean time.
> In physics, Force = mass * acceleration, and acceleration = velocity/
> time. We can increase the force applied to something by increasing
> the mass of the hitting object, or by increasing the speed of the
> hitting object.
Remember the "acceleration' we are mostly concerned with is the
acceleration of the opponents body or body part -- so the key point
you get to it in the next sentence:
> One can also have more of an effect on a target if we
> dramatically shorten the time over which that force is applied . For
> example, a car hitting a solid metal wall will suffer far more
> structural damage than a car that hits a soft snowbank that
> decelerates it slowly.
This is termed "IMPACT".
It is impact that causes the majority of damage in most auto
collisions.
You can use one car to push another car safely at even fairly high
speeds (or at least you could when most cars had standard
transmissions <grin>) if you BEGIN the push slowly and carefully.
Apply the same force quickly (such as during a collision) and metal
bends or breaks.
It's worth reading the Wikipedia articles on IMPACT, MOMENTUM,
IMPULSE, and FORCE to understand what they really mean in physics and
mechanics (which is somewhat different from everyday usage) and when
these ideas aren't directly applicable in less than "ideal elastic"
collisions.
Human bodies are not perfectly elastic, and moreover they CHANGE their
elasticity from moment to moment in response to gravity/balance,
collisions, pain, etc.
> If we rely primarily on gravity to generate the force with a drop in
> body weight, without the rebound effect, gravity has a finite
> acceleration (9.8meters/second^2). This can generate significant
> force, but once something is in freefall, gravity is the only method
> of acceleration. While 9.8m/sec^2 seems like fairly rapid
> acceleration, if the distance is only 1 or 2 inches the actual speed
> of the object after that short distance isn't all that much. ...
There is something discomforting about this statement above, if the
REBOUND from that SAME gravity force is to be used as the replacement.
Either we are using the drop for the rebound or we are just using the
muscular energy directly.
If all the drop is doing is "cocking the trigger" then this would be
akin to cocking your arm before a punch with all the attendant
disadvantages. (I don't subscribe to this explanation but it would be
the case logically.)
> Very much as a ball that is thrown against a wall absorbs the force of
> impacting the wall and rebounds back to the thrower, the force
> generated by that short drop hits the ground through the feet and
> rebounds through the properly aligned skeletal structure into the
> opponent through the hand, elbow, shoulder, or whatever striking
> surface is used. This force is augmented by whatever forward motion
> is generated through the relaxed legs, hips, waist, spine, and
> shoulders. The rebound actually changes the direction of the force so
> it is more in-line with the forward motion of the body and legs, and
> since both vectors of force are heading in roughly the same direction
> (unlike when only a body weight drop is used), the resultant force is
> greater. The sudden halt to the downward motion of the body that
> occurs in a fraction of a second dramatically shortens the time over
> which that force is applied to the opponent. The sudden rapid change
> in direction of force that the rebound causes has the same effect on
> the target as the car hitting the iron wall, rather than the
> snowbank. The sudden impact of the drop/rebound strike doesn't move
> the opponent like a push would. Instead of all of that energy being
> used to overcome the opponent's inertia to move them backwards, the
> force is transmitted to within the target where they stand. Having
> experienced the stopping power of one of these drop/rebound strikes
> myself, I'd liken it to feeling like I had run into a telephone pole,
> with minimal movement on the other person's part.
The above sounds interesting but it isn't really dealing with the
IMPACT and issues of human anatomy that alter the way equations of
mechanics are ideally applied.
> Now, can something with simliar effect be done without the drop/
> rebound? I imagine that it is certainly possible for very talented
> people who are in very good physical shape, that have the muscles and
> the physique, and/ or the coordination to throw extremely fast,
> powerful punches. The advantage of the drop/rebound method of
> striking, though, is efficiency. Since we are relying far more on
> gravity and the laws of physics with proper body alignment to channel
> that force, it means there is less reliance on muscular effort for
> power generation, and less energy is expended for a similar result.
If we are "relying on gravity" then we cannot dismiss that force of
gravity as you did earlier in the explanation. We are either using
the gravity or not.
> Since I'm a fairly small guy (150lbs soaking wet), and I don't have
> the muscle mass or the weight to generate big haymaker punches, I need
> to rely on something else in order to generate significant power.
Right. But hit someone with a 20 pound cement block that is moving
fast enough that they cannot absorb or avoid the impact and you get
really destructive results.
If you can some significant portion of your weight (temporarily)
converted to momentum and apply quickly (i.e., high impact) your
opponent will resemble MUCH MORE CLOSELY a brittle body that can be
broken or damaged.
This is the reason that Systema and oddly enough EVEN Boxers (and also
GC I believe) learn to take punches NOT by tensing the body he-man
fashion, but rather by RELAXING the body and turning it into a big
water bag that dissipates the impact slowly and safely.
The works much better for blows to the body -- largely water -- than
it does for blow to the skull which is more like wood or cement and
thus cannot be 'fully' relaxed for absorption.
Of course, relaxation helps with blows to the head too; you roll with
the punch by moving the neck and other muscles to change the angles
and slow down the force transfer over a greater distance and thus over
a greater time (i.e., reduce impact.)
Oddly enough another way to reduce the damage (to the brain) of a head
blow is to actually do the opposite: solidify the neck and core and
just "take the punch" -- you are likely going to take more superficial
damage (cuts, bruises to your face etc) but the damage to the brain
CAN be reduces because the impact doesn't get transferred TO THE
BRAIN, neither initially when otherwise the brain would be accelerated
in the direction of the blow, nor later when the moving brain --
eventually -- strikes the opposite side of the brain case and thus
suffers would suffer a secondary -- much of the time worse -- impact.
Watch enough boxing knockouts and you see the worst punch (for the guy
being knocked out) is the one that cuts across the point of the chin
therefore rapidly accelerates the skull in a circular directions --
especially if the fighter being hit doesn't "see it coming". The
blows are frequently much less 'forceful' than other blows which do
little or no damage, yet this perfect acceleration of the brain case
and thus the brain causes near immediate unconsciousness.
> Grandmaster Perkins and Grandmaster Carron have far less physical
> gifts than many of their students when it comes to size and muscle
> mass, yet they can still rattle them with what looks like minmal
> movement. If someone is gifted with size, speed, and strength, the
> dropping/rebounding energy makes their strikes that much more
> powerful.
This represent good bio-mechanics. They get that force and momentum
they DO have transferred efficiently -- and this generally means
rapidly -- thus creating high impact and rapid momentum changes in the
target.
It also helps, if you can do it without alerting the opponent who may
have options for dissipating, absorbing, or otherwise dealing with
that force transfer.
> Herb, I actually think it's great that you've got a skeptical mind
> when it comes to these things.
You have all been very tolerant of my outsider attitude (especially
the GM); not all martial arts communities have that attitude.
Let me be clear though:
I am philosophically a scientist and a mathematician. I am not
(particularly) skeptical of GC any more than I am skeptical of
(literally) everything.
At the same time, I have an open mind, and hearing of good results
from enough people with a good attitude (like you folks here) is very
encouraging and provides the evidence to make GC worth pursuing.
Generally you must be most skeptically when you encounter a religious
or fanatical attitude or devotion to received wisdom. Some other
martial arts suffer from this problem in varying degrees.
But I have been reading Attackproof and following this list or the GC
web site for years precisely because there is real value within it.
> As you've stated before, people make a
> lot of claims about combat systems and sometimes its difficult to sort
> out the hype from what's real. It's even more difficult to get an
> idea of what's going on when the only exposure to GC for many people
> is through books and DVDs. I had read the AttackProof book from cover
> to cover and watched the DVD companion series multiple times before I
> finally met up with Ari in Louisville. All of that preparation still
> didn't prepare me for what contact flow was like at the hands of an
> adept. I know there's a number of people in the group that have had
> Systema training that eventually wound up sticking with GC. With
> luck, you'll get a chance to meet up with one of the instructors if
> they ever get down to your neck of the woods. I'm sure you'll get
> something out of it to aid with whatever training you decide to do!
That evidence would mean more if it were presented by the actual
people along with their level of Systema experience and ability.
I have seen quite a few Systema students who were at a plateau DESPITE
continued practice and quality instructors This is one of the
problems that Systema folks do NOT like to discuss openly.
> OK, all of you GC board regulars. Lemme know what I screwed up! :)