Lecture 7 Movement Science
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each of the black spaces below before clicking
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| Postural activation patterns can be divided into what tow parts? | Preparatory phase & Compensatory Phase
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| Preparatory phase | Postural muscles are activated in response to the direction of the reach (if forward, then posterior muscles are recruited, if sideways, then contralateral postural muscles (lateral flexors)
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| Compensatory Phase | After the movement is complete, postural muscles are again recruited in a feedback manner, to stabilize the body further.
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| There is a pre-selection of the postural adapter muscles referred to as a ___________? | Central Set:refers to a state of the nervous system that is influenced or determined by the context of the task…or anticipated task
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| What muscles are weaker in those with back pain and do not fire like healthy persons for postural sets? | TVA, internal obliques, and lumbar multifidi
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| Gait: What areas are responsible for CPG? | spinal cord, brainstem, cerebellum, basal ganglia, vision, cerebral input.
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| Gait: Spinal Cord | Reflexive gait
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| Gait: Cerebellum and Brainstem | Timing and Task Specific Adapatations (like stepping higher or lower)
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| Gait: Basal ganglia | Dynamic Stability and Postural Tone
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| Gait: Vision | Need to gain typical gait pattern that allows adjustment for rough terrain
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| Gait: Brain adds (assuming visual and cortex) | Vision
Orientation to novel Situations
Spatial orientation
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| What happens when we remove sensation from gait? | 1) Slow Down
2) Steps become stereotypical
3) Balance is poor
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| Vision for Reactive strategies help us determine...? | 1) our speed
2) influence our bodies alignment in space (PERCEPTION of our visual field1)
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| How do we initiate gait? | 1) Reduction of activity in gastroc/soleus
2) Activation of the TIb Anterior
3) GRFV moves toward stance leg, while moving leg swings and dorsiflexors become active
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