Foundational Concepts Flashcards
The Muscle Action Spectrum
Concentric, eccentric, isometric
Concentric
moving in opposite direction of force, accelerates or produces force; muscle shortens
Eccentric
muscle develops tension while lengthening; decelerates force
Isometric
muscular force equal to resistive force, stabilizes force; no change in muscle length
Length-tension relationship
resting length of a muscle and the tension it can produce at that length
Force-couple
muscles working together to produce movement
Force-velocity curve
as the velocity of a contraction increases, concentric force decreases and eccentric force increases
Neuromuscular efficiency
ability to produce and reduce force, and stabilize the kinetic chain in all three planes of motion
Structural efficiency
alignment of the musculoskeletal system that allows center of gravity to be maintained over a base of support
Davis’s law
soft tissue models along the lines of stress
Autogenic inhibition
neural impulses that sense tension are greater than the impulses that cause muscles to contract; provides inhibitory effect to muscle spindles
Reciprocal inhibition
simultaneous contraction of one muscle, and relaxation of its antagonist to allow movement
Relative flexibility
tendency of the body to seek the path of least resistance
Pattern overload
consistently repeating the same motion; places abnormal stresses on the body
Postural distortion patterns
predictable patterns of muscle imbalances
