Originally Posted by jackson vile
The Toes do not produce any force, you stated they did.
The balls of the foot mearly transfer the energy of the rest of the body form the kenetic chain, that is all, the balls of the foot do not produce any force either
What don't you get?
Geee Einstein, I guess you like to turn things backward. Would you like me to be specific?
The tendons and muscles of the feet can create pushoff from the ground. This is very common in a professional serve. The toes and balls of the feet are what the player balances on and executes his push-off.
The calve muscles of the lower leg also contribute to this push-off as they work with the feet and in applying force or pressure. These muscles include the Gastrocnemius and the Soleus muscle groups.
When a player is extending upward to the ball, the push-off from the toes greatly helps a player rise off the ground as the body uses upward momentum. The spring in the feet/toes from the elasticity of the muscles and tendons in the feet along with the pressure against the ground assist a player in the rise.
So indeed it is not only obvious in professional film, it is part of the effort to thrust oneself off the ground. The toe push-off does indeed add force to a players serve.
It is very easy to prove this pushoff. simply get on your toes and push yourself off the ground.
The pinpoint stance affords one to balance themselves on their toes/balls of the feet and helps a player utilize the upward force by using the ground as a spring board.