I began this series by discussing the physics of striking, followed by guidelines for functional strength training. The crux of raw physical ability in martial arts, regardless of size or strength, is effective understanding and use of biomechanics.

More specifically, the secret to maximal power generation is the efficient use of the kinetic chain.

The kinetic chain involves the group of body parts that generate and transfer transfer energy from the initiation of a technique to the final execution. In the case of a punch, energy transfer starts from the ball of the back foot and travels up through the arch, the ankle, the knee, the hips, the waist, the back, shoulder, the elbow, the wrist, and finally out through the last three knuckles. Each link along this chain has its own potential to generate and add its energy to the cumulative end product. With the correct sequence and proper timing, a straight lead punch or kick can deliver the same or greater force than the average rear attack. This is where the concept of the whole being greater than the sum of its parts, comes into play. Far advanced in his thinking, Bruce Lee saw the potential in this principle as is evident from this quote:

“The whiplike or coiled-spring action of the human body in its striking movement-pattern is a remarkable phenomenon. . . .The timing is such that each segment adds its speed to that of the others.” -Bruce Lee, from the Tao of Jeet Kune Do

Biomechanics has shown us time and again, that selective contraction and relaxation, coupled with precise timing and body alignment through the kinetic chain of any specific technique, can yield truly tremendous results. A prime example is Bruce Lee’s famous one inch punch, where he generated enough force, over the course of one inch, to send a grown man reeling backwards.

These are the details that dedicated martial artists spend years cultivating and perfecting through experienced instruction and feedback, development of body feel, and application through practice. Jeet Kune Do specifically focuses on these subtle yet tremendously powerful details. I can rattle on about structural alignment, the power line, footwork, hip torque, leverage, timing, etc., but ultimately as Bruce Lee said. “Knowing is not enough, you must apply.”

Happy training!

–
Nhan-Esteban Khuong, L.Ac.
www.SGVJeetKuneDo.com