Proprioceptive Neuromuscular Facilitation is a type of isometric tension where a muscle is stretched, held and then contracted. The contraction is usually held for somewhere around 15 to 20 seconds. This contraction is repeated two to three times and then the muscle is stretched once again. This process is repeated for several sets. This is a type of neuromuscular facilitation (N.M.F.) where the muscle and its motor neurons are being stimulated through tension and held for a period of time. The theory behind proprioceptive neuromuscular facilitation is that it works to lengthen the neuro-muscular pathways and increase the firing rate of the muscle.

Many studies have shown that this type of training can lead to significant increases in muscle strength and power. This is because it can help to facilitate the muscles and increase their firing rate. This type of training is not the same as isometric training though. While isometrics use a static contraction, P.N.F. uses a dynamic contraction where the muscle is being both stretched and contracted at the same time.

There are a couple of different ways that P.N.F. can be performed. The first is by using a machine that allows you to stretch and contract your muscle at the same time. This machine can be adjusted to accommodate any muscle group and a large amount of weight can be used. This type of machine has a lot of different benefits. One is that it allows you to easily change the angle of the stretch and contraction. The second is that it allows you to use a lot of weight so that the muscle is being challenged more.

The second way that P.N.F. is done is by using free weights. This is a lot more challenging to do, but it is also a lot more effective. Free weights have been shown to be more effective than machines for this type of training. The reason for this is that it is easier to stretch the muscle and contract it at the same time with free weights. You can not do this with a machine.