profesormental
05-23-2007, 08:47 PM
Greetings.
On the placement of the rear foot. I will discuss rear foot planted and rear foot on ball of foot, heel not touching floor.
When the tori's body is on the impact state positioning of the straight reverse punch there is a certain load on punching hand. That force is buffered through the tori's joints including the rear ankle.
IF the heel is planted and the body aligned, conservation of momentum dictates that most of the momentum will be transfered to the uke, since the tori's body is braced and won't budge (or budge minimally).
If the heel is off the floor, the joint will absorb a certain amount of force and momentum, lowering the amount of momentum and kinetic energy transfered to the uke.
Again this is a compromise between
1. stability, alignment for optimized kinetic energy transfer and maximum control of your own body...
vs.
2. maneuverability, range and forward body momentum generation.
Control Manipulation applications favor #1, speed hitting and closing gap applications favor #2.
Both configurations have these attributes to some extent, yet each approach optimizes for the application is needs.
My statements can be easily demonstrated by considering the follow ups in each configuration.
Let me give examples.
If you're looking for control manipulation and taking into account that you just hit the attacker, the most probable reaction to you hitting the attacker is that the attacker goes for a grab, since you're in control manipulation range.
You body needs to maximize stability in order to execute a control manipulation, thus you go for the most stable configuration (heel on floor). This tends to happen immediately since you don't intend to go over the guy like a train (this might hamper grappling control mechanisms).
If you're in punching range near contact penetration range, you need to close the gap to put the hurt on. You need speed to create forward momentum .
You hit with the reverse punch using a push drag closing gap maneuver. The attacker flinches back and you want to keep hitting forward and/or off angle to angles of cancellation/obscurity of the attacker since you're now a contact manipulation range.
And so the whomping continues.
If your body feels it needs to move more to get to a desired target probably the heels will stay up to maintain fast moving footwork.
There are many examples of this and it is easy to convince yourself by subjecting the impact stage of the punch to horizontal loads (same vector yet reverse direction of punching direction).
If you wish to do this, experiment and report the results.
Enjoy!
Juan M. Mercado
P.S. Yes we need a mat to play around with these!!!
On the placement of the rear foot. I will discuss rear foot planted and rear foot on ball of foot, heel not touching floor.
When the tori's body is on the impact state positioning of the straight reverse punch there is a certain load on punching hand. That force is buffered through the tori's joints including the rear ankle.
IF the heel is planted and the body aligned, conservation of momentum dictates that most of the momentum will be transfered to the uke, since the tori's body is braced and won't budge (or budge minimally).
If the heel is off the floor, the joint will absorb a certain amount of force and momentum, lowering the amount of momentum and kinetic energy transfered to the uke.
Again this is a compromise between
1. stability, alignment for optimized kinetic energy transfer and maximum control of your own body...
vs.
2. maneuverability, range and forward body momentum generation.
Control Manipulation applications favor #1, speed hitting and closing gap applications favor #2.
Both configurations have these attributes to some extent, yet each approach optimizes for the application is needs.
My statements can be easily demonstrated by considering the follow ups in each configuration.
Let me give examples.
If you're looking for control manipulation and taking into account that you just hit the attacker, the most probable reaction to you hitting the attacker is that the attacker goes for a grab, since you're in control manipulation range.
You body needs to maximize stability in order to execute a control manipulation, thus you go for the most stable configuration (heel on floor). This tends to happen immediately since you don't intend to go over the guy like a train (this might hamper grappling control mechanisms).
If you're in punching range near contact penetration range, you need to close the gap to put the hurt on. You need speed to create forward momentum .
You hit with the reverse punch using a push drag closing gap maneuver. The attacker flinches back and you want to keep hitting forward and/or off angle to angles of cancellation/obscurity of the attacker since you're now a contact manipulation range.
And so the whomping continues.
If your body feels it needs to move more to get to a desired target probably the heels will stay up to maintain fast moving footwork.
There are many examples of this and it is easy to convince yourself by subjecting the impact stage of the punch to horizontal loads (same vector yet reverse direction of punching direction).
If you wish to do this, experiment and report the results.
Enjoy!
Juan M. Mercado
P.S. Yes we need a mat to play around with these!!!