Lecture 4 - Linear Kinematics in Two Dimension Flashcards
What happens if acceleration is zero?
Velocity is constant and position changes OR position is constant
What happens if velocity is zero?
Position is constant, body is not moving
Define gait
Locomotion over land. Walking and running for humans
Define average gait speed
Over a distance, is the average speed of each step a person takes
What is walking speed a determinant of in older adults?
Functional independence
What are humans designed to do in terms of locomotion?
Walk, based on our musculoskeletal structure
Define a step
The period from initial contact of one foot to the initial contact of the other foot
Define cadence
The number of steps taken in a given period of time
How is gait speed determined?
By multiplying step length and cadence
What is the average cadence in adults?
88 steps per minute
Define stride
The period from the initial contact of one foot to the initial contact of the same foot
What are the two determinants of gait speed?
Step length and step rate
Define range of motion
The amount of movement available at a joint in a given direction
Define balance
The ability to control the body over its base of support
Define strength
The ability to produce force
