Spinal Biomechanics and Biomechanical Studies of Human Movement and Physical Anthropology

 
Spinal Biomechanics and Biomechanical Studies of Human Movement, Spinal, kinesiology, Biomechanics, Biomechanical, Strength & Conditioning Athletic Training ,Studies of Human Movement, Human Movement, Levers , Leverage, Athletic spinal development, Super Bowl, Athletic trainers, Strength Coaches, Massage Therapists, muscular skeletal, Home Study Continuing Education ,American Biomechanics Society's, Dr. Scherger. Chemical Medical

                                                          Biomechanics Human Movement Levers and Leverage
 

 

 

 

 

 

 

 

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Aging

The aging of the human spine typically goes from the infant with the C-shape spine into the strong adult S-shape, then into old age developing, again, into the C-shape.

 

 

These two have C-shaped spines.

Developing the humped over posture in the aging process is a natural progression of the spine into a stable 1st class lever system to function upright against the force of gravity.

Under the skin, the bent over posture uses more 1st class vice-like compression forces to stabilize against gravity.

You will learn mathematically why this happens and how it detrimentally affects human functions like walking.

120 lb. human S-shape

At the L5-S1 joint there is

130 lbs. of compression

23 lbs. of shear

120 lb. human C-shape

At the L5-S1 joint there is

90 lbs. of compression

2 lbs. of shear

You will see the mathematics of the forces at work in the knee and hip between the proper upright spine in the youth and the bent forward spine that typifies humans in old age.

Above we've depicted a 200 lb. individual with the center of mass over the hips characterized by the S-shape posture.  Below, we've shown the same type of individual, but with the center of mass 4" forward.

                                                               Biomechanics Human Movement Levers and Leverage

 

 

Questions? Contact us at: The Spinal Fitness Center 19321 NE 10th Avenue Ridgefield, WA 98642 

Phone: 360.887.8600

E-mail: spinalf@spinalfitness.com

Last Modified : 10/18/04 09:53 PM

Author Info

Copyright 2003

All concepts and diagrams, unless noted otherwise,  of human spinal development in gravitational environment are under copyright registration to John S. Scherger, D.C.. This information may be shared with others for personal use, however no document may be republished in any form or embedded in public databases without the permission of Dr. Scherger.