Post Isometric Relaxation

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An Investigation to Determine Whether Post-Isometric Relaxation Combined with Prior Application of Massage is more Effective in Promoting Increased Hamstring Flexibility than Post Isometric Relaxation Alone
One of the most important aspects of chiropractics and osteopathy is concerned with enabling patients to maintain and restore maximum movement and functional ability throughout the lifespan (Vickers and Zollman, 1999).


In this context, a distinction must be made between muscle relaxation techniques and muscle stretching techniques. These techniques are usually applied on the muscles that are hypertonic, and before application of these techniques as modes of manual therapy, it is important to demonstrate muscle tightness. In the muscles, there are stretch receptors called Golgi tendon organs, located in the tendons of the agonist muscles (Schwellnus, 2009). These receptors limit overstretching of the muscle bundles through their reactions to inhibit muscle contractions beyond a certain limit. It is known physiologically that these organs react through inhibition of efferent motor neurons impulse transmission, preventing further contraction of the muscles. This leads to reduction of the muscle tone, which results in agonist relaxation and lengthening. It is important to note that the Golgi tendon organs react to both passive and active movements. This leads to an important therapeutic physical principle of passive mobilisation of a joint, since these Golgi tendon organs respond to both active and passive movements. ...
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