After reading that compressive force on the spine is amplified about 7 times (or more, since the the ratio between the tangential and the normal component of the weight gets lower the closer the spine gets to horizontal; tangential= purely compressive (direction=direction of spine) normal= perpendicular on the tangential component ) , I started wandering how the spine works.
http://www.T-Nation.com/free_online_article/sports_body_training_performance_repair/5_common_technique_mistakes&cr= ) (i.e. squat 1000 N ~ 240 lb = 7000 N compression on the spine)
Can anyone give me a simplified model?
Or is the posted model (although overly simplistic) good enough for educational purposes (i.e. : me understanding how the spine works )
Thank you, Vlad
As can be seen, I've drawn only the tangential component, in order to make things simpler. And now I see the angle can't be that due to the reason stated in the beginning (changing ratio)