Unit 3: Week 2 Flashcards
postural stability
the ability to control COM in relationship to BOS
Center of Mass
point at center of total body mass, which is determined by finding weighted average of the com of each body segment
Center of Gravity
verticle projection of COM
BOS
area of body thats in contact w support surfaces
T or F: older adults have increased postural sway
TRUE
T or F: older adults shifts weight towards toes
no false- shift weight to heels
Progression
ability to initiate and maintain movement including coordinated actions of muscle groups to produce forward motion
adaptation:
ability to adjust gait patterns in response to changing envmt demands or unexpected obstacles
steady state gait
consistent, uninterrupted walking over flat surface at constant speed
kinematics of steady state gate
study of motion wo considering forces that cause it
stride length
initial contact to initial contact of same foot
cadence
steps per min
walking speed
stride length x cadence
stance phase
60% of gait cycle foot in contact w ground
heel strike, mid stance, toe offs
swing phase
initial swing, mid, terminal swing
40% of gait cycle
stance phase ascent elements
- weight acceptance:transfer weight to leading leg
- pull up: quads and glutes engage to lift body up
- forward continuance: maintain forward momentum by propelling body upward and transitioning to next step
ascent swing phase elements
- foot clearance: lift back leg to clear step
- foot placement: place foot on next step and prepare for weight acceptance
explain the descent stance phase
weight acceptance:transfer weight to leading leg as it contacts lower step
forward continuance: maintain forward moementum by shifting weight
controlled lowering: gradually lower body controlled
EXPLAIN descent swing phase elements
LEG PULL THROUGH: lift trailing leg to clear lower step and initate swing phase
preparation for foot placement on lower step
Sit to Stand Phases
preparation phase
weight transfer phase
rising phase
stabilization phase
