Chapter 14 Flexibility Flashcards
what is Reciprocal inhibition?
it allows movement to take place. Reciprocal inhibition is defined as the simultaneous contraction of the agonist (prime mover) muscle and the relaxation of its antagonist
What is altered reciprocal inhibition?
Altered reciprocal inhibition is caused by an overactive agonist muscle decreasing the neural drive to its functional antagonist
(an impairment of the HMS, and fitness professionals should aim to correct this)
What is Synergistic dominance ?
is a neuromuscular phenomenon that occurs when synergists take over function for a weak or inhibited prime mover
( if the gluteal muscles are underactive and not able to produce force effectively, other muscles, such as the hamstrings, are now recruited more than usual to assist in performing hip extension. The result of synergistic dominance is faulty movement patterns leading to soft tissue and joint dysfunction and eventual injury (such as hamstring strains).
What’s it called when the knees move inward?
Knee Valgus
what is a muscle spindle and what does it do?
The muscle spindle is a major sensory organ of the muscle and is composed of microscopic fibers that lie parallel to the muscle fiber.
When a muscle is stretched, the muscle spindle records the change in muscle length and speed (rate) of length change and sends this information to the central nervous system to help prevent the muscle from stretching too far or too fast. This reaction is called the stretch reflex
Golgi Tendon Organ
It is sensitive to changes and muscular tension and speed, Prevents the muscle from being placed under excessive stress. prolong stimulation causes autogenic inhibition
autogenic inhibition
a protective mechanism that reduces a muscles excitability to prevent the muscle from using more force that the tendon or bone can handle
What is Davie’s law?
Soft tissue models along the line of stress and if myofascial is not stimulated by movement, lengthening and broadening, these connective tissue fibers may act as a roadblock preventing soft tissue mobility. This creates alterations in normal tissue mobility and causes relative flexibility.
What is a contraindication?
Medical conditions that would make any type of flexibility, exercise, unsafe for a client to participate in i.e. Osteopenia, varicose veins (foam rolling)
