Personal Performance Porfolio Anatomy and Physiology Warm-Up and Cool-Down

Authors Avatar

                        Personal Performance Porfolio

                            Anatomy and Physiology

                           Warm-Up and Cool-Down

Time spent on a warm up will improve performance. Benefits for the Skeletal

system due to an increase in temperature of the muscles include-

 

~ Greater strength of contraction due to improved elasticity of muscle fibres.

~ Faster speed of contraction due to an increased speed of nerve transmission

to the muscle fibres.

~ Faster speed of contraction and relaxation of the muscle fibres due to a

higher muscle temperature.

~ Increased speed of strength of contraction due to an improvement in

coordination between antagonistic pairs because of a reduction in muscle

viscosity.

~ Increased speed and strength of contraction due to an increase in enzyme

activity in warmer muscle fibres.

~ Reduced risk of injury despite and increase in speed of strength of

contraction due to an increase in blood flow and oxygen to the muscle.

The effects of a warm up on your Vascular System include -

~ Gradual increase in blood flow (Q) due to the vascular shunt mechanism via :

      * vasoconstriction of arterioles/precapillary sphincters to organs  

Join now!

        decreasing blood flow to organs and therefore increasing blood         flow

to working muscles

      * vasodilation of muscle arterioles/precapillary sphincters increasing        

        blood flow delivery to working muscles.

~ Increased body/muscle temperature causing a more rapid increase in

transport of the enzymes required for energy systems and muscle contraction.

~ Increase in body/muscle temperature which :

  * decreases blood viscosity, improving blood flow to working muscles

  * increases the dissociation of oxygen from haemoglobin in muscles

      tissues.

The effects of a Cool Down on the vascular system ...

This is a preview of the whole essay