#12 x 1 1 â 4 FHWS, wall 3 3 â 4  wall to door 1.7 lbs. L012913 ea. plastic anchorsBody: 4 ea.# 10 x 1 1 â 4 FH WS494R Strike: 3 ea. 12-24 x 1 FH MS, wall 3 3 â 4  wall to door 1.7 lbs. L012913 ea. lead anchorsBody: 4 ea. #10 x 1 1 â 4 FH WS494S Strike: 3 ea. 12-24 x 1 FH MS, wall 3 3 â 4  wall to door 1.7 lbs.
inhibition of the antagonist muscle group is mediated by the muscle spindle. If the agonist muscle contracts, then the spindle fires, sending messages to the spinal cord causing the antagonist muscle to relax. PNF Stretching: Autogenic Inhibition. The golgi tendon organ is a nerve receptor found in tendons.This receptor fires when tension increases within the tendon. This tension can be due to stretch or contracting muscle.o achieve this the limb is place in painfree range and an isometric contraction is sustained. The limb is then moved into the new range. The hold-relax method of PNF stretching is facilitated by the golgi tendon organ to allow a reflexive relaxation of the muscle.
PNF is considered an optimal stretching method when the aim is to increase range of motion, especially as regards short-term changes.uring the 1960s, the physical therapy departments of several universities began offering courses in PNF and by the late 1970s PNF stretching began to be used by athletes and other healthy people for more flexibility and range of motion.