Edited by Dr. Giovanni Chetta
Both types of stretching (district and global) can be combined with specific eccentric isometric stretching exercises or PNF techniques(Proprioceptive Neuromuscolar Facilitation). This method, developed by the American neurophysiologist Herman Kabat at the end of the 1940s as a neuromuscular re-education, consists of isometric contractions of the muscle group, for about 15-20 seconds, after having placed it in maximum elongation. This allows, through the activation of the organs tendon muscles of the Golgi and of the relative inverse myotatic reflex, a subsequent further relaxation, therefore elongation of the muscle group involved.
Finally, it "sprung stretching" , a type of muscle stretch that was once very popular, can be harmful. The muscles are in fact protected by fused neuromuscular proprioceptors which activate the spinal myotatic reflex (ROT), when the former are subjected to excessive stretching, contracting them. The consequences of all this can be microtraumas, strains and muscle tears that create scars in the muscle tissue with a consequent decrease in its permanent elasticity.
For postural and lifestyle reasons, there are some muscles that tend to be hypertonic and short and therefore will mostly be stretched, and hypotonic muscles that tend to weaken that will mainly be strengthened. Here are some examples of what often happens.
Muscles prone to hypoactivity
- dorsal part of the body -
Triceps sural
Small and middle gluteus
Ischio-crurali
Middle and lower trapezius)
Lumbar paravertebral
Anterior toothed
Square of the loins
Above and subspinous
Upper trapezius
Deltoid
Scapula elevator
- ventral part -
Adductors of the thigh
Tibialis anterior
Rectus femoris
Foot Extensors
Tensor of the fascia lata
Peronieri
Goose leg muscles
Medial vast
Ileopsoas
Wide lateral
Small breastplate
Big breastplate
Subscapularis
Abdominal muscles
Scaleni
Deep neck flexors
Sterno-cleido-mastoid
Digastric
Chewing muscles
- Upper limbs -
Pronators and supinators
Extensors and flexors
More precisely i postural muscles real, also called static otonic (shunt-muscles), constantly act as anti-gravity systems (they are the tie rods that make our skeleton stand) remaining in tension; they have a predominantly tonic, stabilizing action. For this reason they are deep muscles, rich in fibrous connective substance and predominantly red muscle fibers (type I muscle fibers or Slow Twitch) or with a high content of myoglobin (due to the high oxygen consumption required) and are governed by motor neurons a low rate of discharge (slow acting but resistant muscles). They naturally evolve towards shortening. It is their constant reduction of elasticity that involves joint compression and the consequent premature wear (arthrosis, reduction of the range of movement, tendonitis, etc.). They represent about 2/3 of our musculature. Their constant lengthening is essential through properly performed stretching.
On the contrary, the muscles dynamic ophasics (spurt-muscles) are the muscles of movement, accelerators. They act only if a certain command occurs and for this reason they are superficial, rich in white muscle fibers (muscle fibers type IIa and IIx or Fast Twitch) with a diameter greater than muscle fibers type I, poor in connective tissue and innervated by high motor neurons. frequency of discharge (muscles fast but not very resistant). Over time they tend to weaken normally. Muscle strengthening activity, which must be performed regularly (especially with advancing age), must particularly affect this phasic muscle component.
In postural gymnastics TIB Muscle strengthening exercises focus on dynamic muscles and are performed, free body or with the use of special bands, in a slow and controlled manner, seeking maximum fluidity and precision, in order to prevent damage and discomfort and obtain maximum efficiency The sessions, lasting at least 1.5 hours, are interspersed with short breaks in order to increase muscular and general endurance.
Muscle stretching exercises mainly involve the use of the stretching technique of the myofascial chains.
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