Transcript Proprioception Ch 8

Proprioception
 Agility
 Balance
 Coordination
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Need strength and flexibility first
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Muscle too weak can’t control movement
Flexibility to be functional
Proprioception- body’s ability to transmit
position sense, interpret information, and
respond un/consciously to stimulation
through appropriate execution of posture and
movement
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Know where our fingers are
Maintain balance
Change free throw after a miss
Move from grass to concrete
Receptors
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Cutaneous
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Muscle and Tendon- muscle spindles and
GTO
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Vibration. Skin stretching
Injured body segments use these to supplement
other damaged receptors
GTO stimulates muscle relaxation
Muscle spindle stimulates muscle contraction
Joint receptors
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In joint capsule to measure joint motion
CNS
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Spinal cord- quick reflexes
Brain stem- correlation center
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Extremities, eyes, ears
Cerebral Cortex- conscious movement
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Correct movement learned here and consciously
controlled before it is an automatic response
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I.e. typing or texting
Balance
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Maintain equilibrium by controlling body’s
COG over base of support
Vestibular- static position and motion
Oculomotor
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Which is easier- eyes open or closed?
Ice skaters and gymnasts disregard visual imput
so they don’t get dizzy
Balance needed for safe RTP
Coordination
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Smooth pattern of activity produced with
muscles acting together with appropriate
intensity and timing
Coordination Components
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Activity Perception
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Awareness of volitional
muscle activity
Repetition
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Feedback
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Activity performed, CNS
evaluates to make
adjustments, activity
repeated with
adjustments made
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More accurate with
repetition and
adjustments
Inhibition
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Undesired muscle
activity
Can’t be trained. Start
slow, controlled and
progress
Coordination Development
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Simple to complex
Static to dynamic
Increase speed, force, complexity
Repetition
Repetition
Accuracy- if they fatigue and become less
accurate, discontinue
Agility
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Control direction of body/segment during
rapid movement
What UE agility is needed?
Slow, simple activity to normal speed
Reflect sport position
In general
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Balance first, coordination next, then agility
Static to dynamic
Simple to complex
Repetition