CH 7 Human Movement Science Flashcards
Regional Interdependence Model
Concept describing the integrated functioning of multiple body systems or regions of the body
Biomechanics
Study of mechanical laws or principles relating to the movement of the body. Internal and external forces acting on the body and the movements they produce
Kinesiology
Study of movement as it relates to anatomy and physiology
Osteokinematics
Movement of a limb that is visible
Arthrokinematics
Joint surface movements (roll, slide and spin
Abduction
Movement in the frontal plane away from the midline of the body
Adduction
Movement in the frontal plane back toward the midline of the body
Inversion
Moving the foot inward with toes pointing medially
Eversion
Moving the foot laterally so the the toes face out
Isotonic Muscle action
Force is produced and muscle tension is developed. (resistance)
Isometric
No visible change is muscle structure (plank)
Eccentric muscle action
Extending the muscle (lowering a bicep curls)
Concentric Muscle Action
Flexing the muscle (raising a bicep curl)
Muscle Action Spectrum
The full range of eccentric, isometric and concentric muscle contractions required to perform a movemnt
Feed Forward Activation
When a muscle is automatically activated in anticipation of a movement
Agonist
The main muscle providing force / movement
Synergists
Secondary or helper muscles to perform an action
Stablilizers
Muscles that help to stabilize (hold) a muscle
Antagonist
Opposite muscle of an agonist
Length Tension Relationship
The resting length of a muscle and the amount of tension it can produce at this resting length
Stretch Shortening Cycle
Loading of a muscle eccentrically to prepare for a rapid concentric contraction
Series elastic component
Springlike noncontractile component of muscle and tendon that stores elastic energy (squatting before a jump)
Amortization Phase
Transition from eccentric to concentric
Integrated Performance Paradigm
To move with efficiency, forces must be dampened (eccentrically) stabilized (isometrically) and then accelerated (concentrically)