What is muscle excitability?

Excitability is the ability to respond to a stimulus, which may be delivered from a motor neuron or a hormone. Extensibility is the ability of a muscle to be stretched.

Why do you hold a stretch for 30 seconds?

But how long should you hold a stretch? Matt Dobler, Physician Assistant with OrthoCarolina and former competitive cross country runner, says that research has shown 30 seconds to be the optimal time to hold a static stretch. This amount of time allows the muscles to relax and be prepped to work.

What is the difference between PNF and met?

These latter are activated during PNF and typically occur at forces greater than 25% of the person’s maximal force [5]. Another difference between MET and PNF is that the contraction during MET is performed at the initial barrier of tissue resistance, rather than at the end of the range of motion (ROM) of a joint [6].

Why are muscle cells called excitable?

Nerve cells and muscle cells are excitable. Their cell membrane can produce electrochemical impulses and conduct them along the membrane. In muscle cells, this electric phenomenon is also associated with the contraction of the cell.

What are the PNF patterns?

The PNF exercise patterns involve three components: flexion-extension, abduction-adduction, and internal-external rotation. The patterns mimic a diagonal rotation of the upper extremity, lower extremity, upper trunk, and neck. The pattern activates muscle groups in the lengthened or stretched positions.

What 2 things should you never do when stretching?

Mistakes you should avoid while stretching

  1. Not warming up. You should stretch with warm muscles.
  2. Overstretching the muscles.
  3. Stretching injured muscles.
  4. Not using the proper techniques.
  5. Doing static stretches.

What is PIR stretching?

Post-isometric relaxation (PIR) is a soft tissue stretching technique used by many health care professionals to lengthen both acute and chronic short muscles. PIR is commonly used on patients with low back pain to lengthen short hamstring muscles that can contribute to their low back pain.