24 Questions
What happens when the muscle contracts and the GTO is activated?
It responds by inhibiting the contraction
What is the location of the muscle spindle?
Within the muscle belly
What is the effect of Post Isometric Relaxation (PIR) on muscle tone?
It decreases muscle tone
What is the percentage of contraction required for Post Isometric Relaxation (PIR)?
10-20%
What is the main difference between Post Isometric Relaxation (PIR) and Post Facilitation Stretch (PFS)?
PFS is more aggressive than PIR
Who developed the technique of Post Isometric Relaxation (PIR)?
Lewitt
What happens to the antagonist muscle when the muscle spindle is activated?
It relaxes
What is the purpose of taking the hypertonic muscle to a length just short of pain in Post Isometric Relaxation (PIR)?
To find the point of resistance
Who developed the Muscle Energy Technique (MET) in 1948?
Fred Mitchell
What is the primary goal of Muscle Energy Technique (MET)?
To relax the muscles and lengthen the muscle
What is the type of contraction used in Muscle Energy Technique (MET)?
Isometric contraction
What is the role of the Golgi tendon organ (GTO) in Muscle Energy Technique (MET)?
Senses muscle tension
What is Reciprocal Inhibition MET?
A sub-maximal contraction of a muscle followed by stretching of the opposite muscle
What is the difference between Muscle Energy Technique (MET) and static stretching?
MET is active, while static stretching is passive
What is the role of the muscle spindle in Muscle Energy Technique (MET)?
Helps in managing muscular control and coordination
What is the purpose of Muscle Energy Techniques (METs)?
To improve the function of the musculoskeletal system and reduce pain
What is the initial state of the hypertonic and shortened muscle in the PFS technique?
Between a fully stretched and a fully relaxed state
What happens to the patient's effort in the PFS technique after 5-10 seconds of contraction?
The patient relaxes and releases the effort
What is the primary concept behind Reciprocal Inhibition MET?
Reciprocal Inhibition
What is the position of the affected muscle in the Reciprocal Inhibition MET technique?
Mid-range position
What is one of the indications of MET techniques?
Lengthening a shortened, contractured, or spastic muscle
What is a contraindication of MET techniques?
Fracture
What is the purpose of the therapist's resistance in the Reciprocal Inhibition MET technique?
To completely resist the patient's effort
How many times is the procedure typically repeated in the PFS technique?
Between three to five times
Study Notes
Muscle Energy Technique (MET)
- Developed by Fred Mitchell in 1948
- A form of manual therapy that uses gentle isometric contractions to relax muscles and lengthen them
- Active technique, where the patient is an active participant
Principles of MET
- Based on Autogenic Inhibition and Reciprocal Inhibition
- Autogenic Inhibition: relaxation of a muscle after a sub-maximal contraction
- Reciprocal Inhibition: contraction of one muscle followed by stretching of the opposite muscle
Types of MET
- Autogenic Inhibition MET:
- Post Isometric Relaxation (PIR)
- Post Facilitation Stretching (PFS)
- Reciprocal Inhibition MET:
- Contraction of one muscle followed by stretching of the opposite muscle
Post Isometric Relaxation (PIR)
- Developed by Karel Lewitt
- Technique to decrease muscle tone after a brief period of submaximal isometric contraction
- Works on the concept of autogenic inhibition
- Steps:
- Take the hypertonic muscle to a length just short of pain
- Perform a sub-maximal contraction away from the barrier for 5-10 seconds
- Relax and exhale, then apply a gentle stretch to take up the slack till the new barrier
Post Facilitation Stretch (PFS)
- Developed by Janda
- Technique based on autogenic inhibition
- Steps:
- Place the hypertonic and shortened muscle between a fully stretched and a fully relaxed state
- Contract the agonist using maximum effort for 5-10 seconds
- Relax and release the effort, then apply a rapid stretch to a new barrier and hold for 10 seconds
Reciprocal Inhibition MET
- Different from PIR and PFS in that it involves the contraction of one muscle followed by stretching of the opposite muscle
- Steps:
- Place the affected muscle in a mid-range position
- Push towards the restriction/barrier while the therapist resists (isometric) or allows movement (isotonic)
- Relax and exhale, then apply a passive stretch to the new barrier
Indications and Contraindications
- Indications:
- Lengthen a shortened, contractured, or spastic muscle
- Reduce pain
- Stretch tight fascia
- Reduce localized edema
- Enhance proprioception and motor control
- Improve local circulation
- Guard against future injuries
- Contraindications:
- Fracture
- Tendon ruptures
- Muscle Inflammation
- Acute sprains
- Acute strains
- Dislocations
- Precautions:
- Osteoporosis
- Hypermobility
Learn about Muscle Energy Technique, a manual therapy developed by Fred Mitchell in 1948, which uses gentle isometric contractions to relax muscles. Compare it with static stretching and understand its benefits.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
