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NASM Chapter 6
Flexibility Training Concepts
18
Science
Undergraduate 1
01/20/2009

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Term
flexibility
Definition
the normal extensibility of all soft tissues that allow the full range of motion of a joint.
Term
extensibility
Definition
capability to be elongated or stretched.
Term
dynamic range of motion
Definition
the combination of flexibility and the nervous system's ability to control this range of motion efficiently.
Term
neuromuscluar efficiency
Definition
the ability of the neuromuscluar system to allow antagonists, agonists, and stabilizers to work syngeristically to produce, reduce, and dynamically stabilize the entire kinetic chain in all three planes of motion.
Term
dynamic functional flexibility
Definition
multiplanar soft tissue extensibility with optimal neuromuscualar efficiency throughout the full range of motion.
Term
postural distortion patterns
Definition
predictable patterns of muscle imbalances.
Term
relative flexibility
Definition
the tendency of the body to seek the path of least resistance during functional movement patterns.
Term
muscle imbalance
Definition
alteration of muscle length surrounding a joint.
Term
altered reciprocal inhibition
Definition
the concept of muscle inhibition, caused by a tight antagonist, which inhibits its functional antagonist.
Term
synergistic dominance
Definition
the neuromuscular phenomenon that occurs when inappropriate muscles take over the function of a weak or inhibited prime mover.
Term
arthrokinematics
Definition
the motions of joints in the body.
Term
arthrokineteic dysfunction
Definition
altered forces at the joint that result in abnormal muscular activity and impaired neuromuscular communication at the joint.
Term
autogenic inhibition
Definition
the process when neural impulses that sense tension is greater than the impulses that cause muscles to contract, providing an inhibitory effect to the muscle spindles.
Term
pattern overload
Definition
consistently repeating the same pattern of motion, which may place abnormal stresses on the body.
Term
Davis's law
Definition
states that soft tissue models along the lines of stress.
Term
static stretching
Definition
the process of passively taking a muscle to the point of tension and holding the stretch for minimum of 20 seconds.
Term
active-isolated stretch
Definition
the process of using agonists and synergists to dynamically move the joint into a range of motion.
Term
dynamic stretch
Definition
the active extension of a muscle, using force production and momentum, to move the joint through the full available range of motion.
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