3.11 GAIT

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  1. What is gait?
    a particular way or manner of moving on foot
  2. What 4 things does walking require the neuromuscular system to accomplish? (4)
    -generate power to redirect and advance the body

    -maintain balance during single leg stance

    -swing the leg opposite the stance leg

    -support body weight without collapsing
  3. what are the 4 steps in GAIT?
    -right foot strike

    -stance phase

    -right toe off

    -swing phase
  4. how many steps are in a stride?
    2
  5. What does an EMG tell us?
    • measures muscle activity
    • *tells us when a muscle is on of off
  6. What does EMG stand for?
    Electromyography
  7. what are the 3 tasks for the gait cycle?
    -weight acceptance

    -single limb support

    -limb advancement
  8. what are the 2 periods in the weight acceptance task?
    -initial contact

    -loading response
  9. what are the 2 periods in the singe limb support?
    -mid stance

    -terminal stance
  10. what are the 4 periods of limb advancement task?
    -pre swing

    -initial swing

    -mid swing

    -terminal swing
  11. Weight acceptance-initial contact) what do the ankle dorsiflexors prevent?
    foot slap
  12. Weight acceptance-initial contact) what do the hip extensors do? (3)
    -decelerate the thigh

    -aids in knee extension and

    -foot placement
  13. Weight acceptance-initial contact) what do knee flexors and extensors do?
    stabilizes knee in preparation for loading
  14. weight acceptance-loading response) what do knee extensors do? (2)
    • -accept weight of the body
    • *eccentric

    • -extend the knee
    • *concentric
  15. weight acceptance-loading response) what do the hip abductors do?
    • -stabilizes the pelvis in the frontal plane
    • *isometric
  16. single limb support-midstance) what happens to the body mass?
    it is carried forward by momentum
  17. single limb support-midstance) what do the ankle plantarflexors do?
    • -stabilizes the knee and preserves momentum
    • *isometric or concentric
  18. single limb support- terminal stance) what do the ankle flexors do?
    • accelerate body mass
    • *concentric
    • **triceps surae
    • **flexor hallucis longus
  19. single limb support- terminal stance) what does the iliopsoas do?
    -small bursts may occur leading into the unloading response of preswing
  20. Limb advancement-Preswing) What do the hip flexors do?
    • prepare for swing
    • *swing limb behaves like a passive pendulum
    • **iliopsoas, rectus femoris
  21. Limb advancement-terminal swing phase) what do knee flexors do?
    • -decelerates shank
    • **hamstrings
  22. Limb advancement-terminal swing phase) what do hip extensors do>?
    • decelerate thigh
    • *gluteus maximus
  23. Limb advancement-terminal swing phase) what do dorsiflexors do?
    • prepares for foot contact
    • *tibialis anterior
  24. Limb advancement-terminal swing phase) what do knee extensors do?
    • prepares for foot contact
    • *quads
  25. Heel strike) which 2 are the major muscles used on this phase?
    -tibialis anterior

    -extensor digitorum longus
  26. Heel strike) what is the role during gait?
    prevent foot slap
  27. stance phase) which 4 muscles are involved?
    -quadriceps femoris and hamstrings


    -gluteus medius and minimus
  28. stance phase) what is the role during gait? (2)
    -accepts weight and extends the knee

    -stabilizes pelvis
  29. toe off)which are the 2 main muscles involved?
    -triceps surae

    -flexor hallucis longus
  30. toe off) role during gait?
    accelerates body forward
  31. swing phase)major muscle used?
    iliopsoas
  32. swing phase) role during gait?
    accelerated thigh forward
Author:
efrain12
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Card Set:
3.11 GAIT
Updated:
2013-11-22 00:34:29
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GAIT
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