PNF Stretching

Question 1

What is PNF

Answer 1

Proprioceptive neuromuscular facilitation

Question 2

What is the CRAC technique

Answer 2

Contract
Relax
Antagonist
Contract

Question 3

What are Proprioceptors and what types are there

Answer 3

Sensory organs in the muscles, tendons and joints that inform the body of the extent of movement
Muscle spindles
Golgi tendon organs

Question 4

Where are muscle spindles found

Answer 4

Between skeletal muscle fibres

Question 5

Where are golgi tendon organs found

Answer 5

Between the muscle fibre and tendon

Question 6

What do muscle spindles detect

Answer 6

How fast + far a muscle has been stretched

Question 7

What do golgi tendon organs detect

Answer 7

Levels of tension in a muscle

Question 8

What do the muscle spindle do

Answer 8

Produces stretch reflex to prevent overstretching

Provides info to CNS about muscle stretch, signal sent back to stimulate muscle contraction to trigger stretch reflex and prevent overstretch

Question 9

What does the golgi tendon organ do

Answer 9

Sense increase in muscle tension during isometric muscle contraction during PNF

Sends inhibitory signals to brain that allow antagonist muscle to relax and lengthen, preventing stretch reflex

This is called Autogenic inhibition

Question 10

Autogenic inhibition

Answer 10

Sudden relaxation of the muscle in response to high tension

Prevents muscle reflex

Question 11

What decreases immediately after autogenic inhibition

Answer 11

Power and speed