Welcome to the official www.PssAthletics.com newsletter!!!

It is once again time for another cutting edge training newsletter from

Progressive Sporting Systems, Inc.

In this edition you will find an informative article on the biomechanical

foundations of proper cutting mechanics. You will find a complete

killer bodyweight workout you can use as a dynamic warm-up

or as an outside workout.

Please enjoy...and feel free to pass this on to your friends.

Featured Article

Biomechanical Cutting

Tony Reynolds, MS, CSCS, YCS Level

To improve movement, each coach and/or athlete must have a firm

understanding of the function of the kinetic chain and its relationship

and interaction with ground reaction forces and momentum.

Once this understanding is developed a logical progression can be

implemented to correct and enhance movement skills.

Ground Reaction Forces

The foundation for all movement must reside in the knowledge that

movement is completely dependant on the ability of the athlete to

utilize and manipulate forces, most importantly the forces that interact

with the ground (ground reaction forces GRF).

The ability to powerfully apply force to the ground is crucial to

movement, but is only part of the equation. We must also be able to

efficiently deal with the force the ground supplies back into the body,

because in reality, these are the primary forces that propel and stop

the body.

Thanks to Newton’s laws of motion, we know that for every action

there is an equal and opposite reaction. With respect to movement,

this means that when we push against the ground with X pounds of

force, the ground is going to push back with that same (X) amount

of force (dependant upon the surface).

I call this the FIFO (force in = force out) response. When you further

examine the FIFO response you will see that the harder you push into

the ground the harder the ground is going to push back. This concept

will become increasingly important later when we start to discuss

acceleration and deceleration.