Slow Gait

Question 1

Demands of Slow Gait

Answer 1

More active swing phase
Loss stabilizing influence of arm swing
Larger frontal plane excursion COM
More variable pattern foot placement
Increased dynam instabil- postural muscle synergies work more than locomotor ones
Greater muscle effor

Question 2

Ankle Kinematics

Initial Contact

Answer 2

ankle neutral

-Heel Rocker

Question 3

Ankle Kinematics

LR

Answer 3

0-10PF eccentric ant tib
Obj: part heel rocker/fwd prog
SLow: flat foot contact- tibia goes back, eliminates heel rocker

Question 4

Ankle Kinematics

Mid Stance

Answer 4

10PF-5DF eccentric PFs
Obj: prog COM over BOS/ankle rocker
Slow: remains flat foot, no ankle rocker

Question 5

Ankle Kinematics

Term Stance

Answer 5

5-10DF eccentric PFs
Obj: COM beyond BOS/forefoot rocker
Slow: heel on ground, no rocker

Question 6

Knee Kinematics

Mid Stance

Answer 6

20F-0

Obj: COM over BOS, single limb stance stabil

Question 7

Knee Kinematics

Term Stance

Answer 7

Remiains neutral
Obj: prog COM beyond BOS; extension gets forefoot rocker!
Slow: flexed mid/term stance no forward prog (even if DF present)

Question 8

Hip Kinematics

Mid Stance

Answer 8

20F-0 Trunk Neutral

Obj: COM over BOS, single stance stabil

Question 9

Hip Kinematics

Term Stance

Answer 9

0-20E Trunk Neutral

Obj: COM beyond BOS, normal step/stride length

Question 10

Compensations leading to decreased speed

Answer 10

• Limited rockers contralat side (stop themselves)
• Flat foot contact= decreased heel
• Already DF=decreased ankle rocker- tib goes back
• Contralat heel in contact= decreased forefoot rock
• Forward trunk lean-> GRF in front knee->knee exten moment->limited rockers/fwd prog