Core versus Appendages. Function and Response

The ‘core’ can be likened to the stick in the picture below.

The appendages in turn can be likened to the propeller.  The more efficient the ‘core’ or stick is at transferring energy into the ‘appendages’ or propeller, the greater the influence on the environment (function) is produced.

In this picture, a general relationship can be established with the kinetic chain of the human body.

WALKING:

  1. The ‘hands’ in the picture = the foot in an activity such as walking.  This is because the foot initiates everything in the kinetic chain during an activity such as walking.
  2. The ‘post’ in the picture = the ‘core’, or axial skeleton, and surrounding tissues as they work to efficiently and in their respective roles transfer energy up the kinetic chain.
  3. The ‘propeller’ in the picture = the arms, or ‘appendages’ which become reactive to the demands that the feet, then core, place upon them.

THROWING:

  1. The ‘hands’ in the picture = the hand that is throwing the object.  This is because the hand initiates everything in the kinetic chain during the activity of throwing.
  2. The ‘post’ in the picture = the ‘core’, or axial skeleton and surrounding tissues as they work to efficiently and in their respective roles transfer energy down the kinetic chain.
  3. The ‘propeller’ in the picture = the feet which respond to assist in loading and decelerating the forces delivered from the core.