Normal Gait Flashcards
gait cycle
initial heel contact of one foot to heel contact of the same foot
stride
synonymous with a gait cycle
step
sequence of events that occurs within heel contacts of opposite feet
stride length
distance btw 2 successive heel contacts of same foot
what is normal stride length
1.51 m for males and 1.32 m for females
step length
distance btw successive heel contacts of 2 different feet
what is degree of toe out
angle btw line of progression of the body and a line intersecting the center of the heel and second toe
what is normal degrees of toe out
5-7
step width
lateral distance btw heel centers of 2 consecutive foot contacts
what is average step width
7-10 cm
stride time
time for a full gait cycle
step time
time for completion of a R or a L step
cadence
number of steps per minute (step rate)
what is normal cadence
108 steps/min for males
118 steps/min for females
spatial-temporal discriptor
best & most functional measurement of individuals walking ability
walking speed, m/s or mph
distance covered in a given amount of time
what is normal walking speed
1.37 m/s for males & 1.30 m/s for females
3 mph
what percentage do you spend in stance phase
60%
what percentage do you spend in swing phase
40%
what percentage do you spend in single limb support
80%
what percentage do you spend in double limb support
20%
what percentage do you spend in stance phase while running
30%
what percentage do you spend in swing phase while running
70%
what percentage do you spend in single support phase while running
60%
what percentage do you spend in float period while running
40%
what percentage do you spend in double support phase while running
0%
what are the 3 functional tasks of gait
weight acceptance
single limb support
swing limb advancement
weight acceptance includes
initial contact
loading response
forward progression, stability, shock absorption
single limb support includes
mid stance
terminal stance
stability, forward progression
swing limb advancement includes
pre-swing
initial swing
mid swing
terminal swing
foot clearance, limb advancement
what is the best way to visualize displacement of CoM
by tracking the displacement of head and torso
in gait, where is CoM displaced?
forward direction
vertical direction
side to side direction
how is vertical displacement best viewed
from the side
where is CoM at the lowest point
at midpoint of both periods of double limb support
where is CoM at the highest point
at the midpoint of both periods of single limb support
what is total vertical displacement
approximately 5 cm
what is side to side displacement
shifts from R to L
when does maximum shift to the R occur
at the end of midstance if the R leg is the reference point for the gait cycle
when does maximum shift to the L occur if your R leg is your reference leg
during midswing of the R leg
what is total side to side displacement
4 cm
