Hi All

Following on from Pete's question about punching power, where lots of people discussed exercise and strengthening. A question popped in to my head; what is the science of the strike?

To deliver an effective strikes (kick, punch, elbow etc) that have penetrative power on an opponent, is it:
• Acceleration with clean stop.
• Timing
• Accuracy
• Weight
• Muscle strength.
• Something else?
I ask because I have sparred with people what have caught me clean and the punch has had no effect. Whereas other times I’ve been hit and the punch has shaken my whole body. I’ve also felt this with a couple of leg strikes (once with a taekwondo guy and once with Thai boxer’s knee) both seemed to cut through to the bone.

Any thoughts?