Chapter 14: Flexibility Training Concepts Flashcards
The normal extensibility of soft tissues that allows for full range of motion of a joint
Flexibility
Capability to be elongated or stretched
Extensibility
The degree to which specific joints or body segments can move; often measures in degrees
Range of motion (ROM)
Optimal flexibility and joint range of motion; ability to move freely
Mobility
The body’s connective tissue that includes muscles and fascia
Myofascial
The process in which the body seeks the path of least resistance during functional movements
Relative flexibility
The collective components and structures that work together to move the body: muscular, skeletal, and nervous systems
Human movement system (HMS)
Tissue connecting, supporting, and surrounding bodily structures and organs
Soft tissue
Predictable patterns of muscle imbalances
Postural distortion patterns
When muscles on each side of a joint have altered length-tension relationships
Muscle imbalance
The synergistic action of multiple movement around a joint
Force-couple relationships
Movement of a limb that is visible
Osteokinematic
The description of joint surface movement; consists of three major types: roll, slide, and spin
Arthrokinematics
When an agonist receives a signal to contract, its functional antagonist also receives an inhibitory signal allowing it to lengthen
Reciprocal inhibition
Occurs when an overactive agonist muscle decreases the neural drive to its functional antagonist
Altered reciprocal inhibition
When elevated neural drive causes a muscle to be held in a chronic state of contraction
Overactive
When a muscle is experiencing neural inhibition and limited neuromuscular recruitment
Underactive
The neuromuscular phenomenon that occurs when synergists take over function for a weak or inhibited prime mover (agonist)
Synergistic dominance
When a muscle’s resting length is too short or too long, reducing the amount of force it can produce
Altered length-tension relationship
The ability of the nervous system to recruit the correct muscles to produce force, reduce force, and dynamically stabilize the body’s structure in all three planes of motion
Neuromuscular efficiency
Sensory receptors sensitive to change in length of the muscle and the rate of that change
Muscle spindle
A division of the nervous system that includes the brain and spinal cord
Central nervous system
Neurological signal from the muscle spindle that causes a muscle to contract to prevent excessive lengthening
Stretch reflex
A specialized sensory receptor located at the point where skeletal muscle fibers insert into the tendons of skeletal muscle; sensitive to changes in muscular tension and rate of tension change
Golgi tendon organ (GTO)