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Postural Control Tru

Lecture 7 Movement Science

QuestionAnswer
Postural activation patterns can be divided into what tow parts? Preparatory phase & Compensatory Phase
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)
Compensatory Phase After the movement is complete, postural muscles are again recruited in a feedback manner, to stabilize the body further.
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
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
Gait: What areas are responsible for CPG? spinal cord, brainstem, cerebellum, basal ganglia, vision, cerebral input.
Gait: Spinal Cord Reflexive gait
Gait: Cerebellum and Brainstem Timing and Task Specific Adapatations (like stepping higher or lower)
Gait: Basal ganglia Dynamic Stability and Postural Tone
Gait: Vision Need to gain typical gait pattern that allows adjustment for rough terrain
Gait: Brain adds (assuming visual and cortex) Vision Orientation to novel Situations Spatial orientation
What happens when we remove sensation from gait? 1) Slow Down 2) Steps become stereotypical 3) Balance is poor
Vision for Reactive strategies help us determine...? 1) our speed 2) influence our bodies alignment in space (PERCEPTION of our visual field1)
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
Created by: evewave
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