Term
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Definition
| Product of mass time velocity |
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Term
| What are the limits of stability? |
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Definition
| refers to the sway boundaries in which and individual can maintain equilibrium w/o changing BOS |
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Term
| What does Balance control require? (3) |
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Definition
1) Nervous System
2) Musculoskeletal System
3) Contextual effects |
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Term
| What sensory systems are involved in balance (3) |
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Definition
1) Visual system
2) somatosensory System
3) Vestibular System
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Term
| What does the visual system provide? (3) |
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Definition
1) position of the head relative to the environment
2) the orientation of the head to maintain level gaze
3) the direction and Speed of head movement |
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Term
| What does the somatosensory system provide? |
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Definition
| the position and motion of the body |
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Term
| Where does the somatosensory system recieve its information from ? (3) |
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Definition
1)muscle proprioception
2) Joint Receptors
3) Skin Mechanoreceptors |
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Term
| What does the vestibular system provide? |
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Definition
| info about the position and movement of the head with respect to gravity and internal forces |
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Term
| Where is sensory information integrated? (3) |
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Definition
1) Cerebellum
2) BG
3) Supplementary motor area |
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Term
| What does the ankle strategy help restore? |
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Definition
| a persons COM to stable a position |
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Term
How is the ankle strategy usually applied?
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Definition
| in the AP and PA direction |
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Term
| What is the weight shifting strategy used for? |
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Definition
| to control mediolateral perturbations |
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Term
| how is the weight shifting strategy performed |
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Definition
| shifting body weight laterally from one leg to the other |
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Term
| What are key control point for the weight shifting strategy? |
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Definition
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Term
| What is the suspension strategy? |
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Definition
| balance task when a person quickly lowers his bodies COM by flexing the knees |
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Term
| What is the hip strategy for ? |
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Definition
| rapid and large external perturbations |
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Term
| How does the hip strategy work? |
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Definition
| It uses rapid hip flexion or extension to move the COM w/in the BOS |
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Term
| What is the stepping strategy? |
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Definition
using foward or backward steps to enlarge BOS
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