Kinetics of Gait Flashcards
Tib posterior, Fibularis and FDL work do do what
control pronation eccentrically while we load.
controls inversion concentrically while we push off
It what phase of gait does the iliopsoas work eccentrically?
midstance through terminal stance
what phase of gait does the ADD longus work in? for what purpose?
stance phase
for stabilization
When are the erector spinae active and in what way?
what are they working aginst?
they are active eccentrically at heel contact and swing (other sides heel contact)
They are working against an external hip flexor moment that is trying to throw the COM forward.
when and how are abdominals most active?
what are they working against
midstance and terminal stance concentrically
they are working against an external extension moment
what three muscle groups are not robust to weakness in gait?
PF, hip flexors, ABD
gait is MOST robust to what weakness?
hip and knee extensor
compensations lead to overall increase in what?
energy costs of walking
what part of the body initiates and terminates walking
cerebral cortex
how many major muscle synergies?
5 independent neural commands
the system adapts the neural commands to adjust for changes in what two things?
Speed and load
how do things change when the system adapts to neural commands?
the curve just shifts
the main contribution to jt reaction forces during gait is what?
muscle activation!! gravity and centrifugal forces is super minimal!
Cane: same or opposite side
Weight: same or opposite side?
Cane: opposite side
Weight: same side
Where do bilateral canes fit in with giving AD?
more ABD muscle activity than just contralateral cane probably because there is more lateral lean
