I fail to see how slapping one's self would increase speed and power... being a novice feel free to correct me as necessary. In the argument of slapping your body to gain power and speed is based upon Chi/Ki it seems contradictive to how Chi is supposed to work. I am under the impression that Chi would be disrupted by these slaps... Perhaps I am missinformed.
To me slapping my chest or shoulder is just a timing check for me. It serves as a double reference for my body, the sound and impact of the hand that is striking my body signifies the weapon I am striking the opponent with should be hitting the the target at the same time. This helps me ensure that I am not over reaching the range of my weapons and keeps the flow of the technique. The other perpuse it serves (for myself that is) is that when my hand makes contact with my body I "know" where it is. I have a better sense of where my hand is in relation to the rest of me.
Slapping the opponent I view a method of controling the depth of contact. Open handed I am not quite as concerned with penetrating too far causing harm to my opponent (dummy opponent that is "real life" is another matter); and that is not to say that you can not have a devastating open handed strike. It is my understanding that generally (not always) if you are in range to strike with an open hand, you are in range to strike with a closed fist, so there is no sacrificing of range. Secondly slapping an opponent helps them (again this is IMO and speaking about myself) understand the placement of the strikes. Being a good "dummy" they should be reacting to the strikes you are using, by understanding how the strikes are supposed to make the opponent react they gain a deeper understanding of not just "how" to execute the technique, but "why" the technique designed as such.
Again this is based upon my limited and novice experience... feel free to enlighten me of my errors of judgement or fact.
-Josh
To me slapping my chest or shoulder is just a timing check for me. It serves as a double reference for my body, the sound and impact of the hand that is striking my body signifies the weapon I am striking the opponent with should be hitting the the target at the same time. This helps me ensure that I am not over reaching the range of my weapons and keeps the flow of the technique. The other perpuse it serves (for myself that is) is that when my hand makes contact with my body I "know" where it is. I have a better sense of where my hand is in relation to the rest of me.
Slapping the opponent I view a method of controling the depth of contact. Open handed I am not quite as concerned with penetrating too far causing harm to my opponent (dummy opponent that is "real life" is another matter); and that is not to say that you can not have a devastating open handed strike. It is my understanding that generally (not always) if you are in range to strike with an open hand, you are in range to strike with a closed fist, so there is no sacrificing of range. Secondly slapping an opponent helps them (again this is IMO and speaking about myself) understand the placement of the strikes. Being a good "dummy" they should be reacting to the strikes you are using, by understanding how the strikes are supposed to make the opponent react they gain a deeper understanding of not just "how" to execute the technique, but "why" the technique designed as such.
Again this is based upon my limited and novice experience... feel free to enlighten me of my errors of judgement or fact.
-Josh