normal gait lab

Question 1

foot/toe clearance study

Answer 1

study looked at how this changes with added cognitive components; more cognitive concentration decreased toe clearance, especially in older adults however, reducing the visual field actually increases the toe clerance due to an overcompensation

Question 2

average COM change with each step

Answer 2

4 mm

Question 3

ankle joint during heel strike

Answer 3

PF immediately after and is eccentrically controlled by tib ant

Question 4

ankle joint throughout stance phase

Answer 4

passie DF and managed by triceps surae (gastroc heads and soleus)

Question 5

ankle joint in toe-off phase

Answer 5

large PF leading into toe off which propels body forward and advances the limb, driven by triceps surae (gastroc heads and soleus)

Question 6

what joint has the largest ROM throughout gait?

Answer 6

knee

Question 7

knee position throughout most of the gait cycle

Answer 7

flexion

Question 8

knee throughout the gait cycle

Answer 8

there are two noticeable peaks of flexion, the first during weight acceptance and the second to clear the foot for toe clearance during swing

Question 9

hip joint position throughout the gait cycle

Answer 9

2 major movements; first if flexion to advance limb forward to next step and then extension throughout stance as body progresses over supporting limb

Question 10

ways to observe/record gait

Answer 10

video-based motion capture techniques, wearable sensors, pressure sensitive mats, and visual analysis

Question 11

marker-based gait analysis

Answer 11

is rigorous and accurate and able to calculate kinematics and kinetics

Question 12

wearable sensors gait analysis

Answer 12

is possible in nearly any environment, is low cost, but kinematics is not directly measured

Question 13

pressure sensing for gait analysis

Answer 13

does not measure kinematics but gathers spatiotemporal data and loading patterns