Intro and basic concepts Flashcards
(11 cards)
Kinesiology
Study of human movement.
Study it to understand movement and forces acting on the body to learn how to manipulate forces.
Why do we study kinesiology?
Prevent injury
Restore function
Provide optimal performance
Biomechanics
Application of principles of mechanics to the human body (physics in body).
Kinematics
Movement without regard for forces that produce motion in regard to space and time.
Subdivision of biomechanics.
Osteokinematics
Describes how a bone segment moves.
Gross movements of bones at joints.
Arthrokinematics
Describes how a joint moves between bones.
Ex: how the humerus and scapula move.
Kinetics
Consideration of forces that produce or resist movement.
Subdivision of biomechanics.
Closed kinetic chain
A distal segment is fixed relative to a proximal segment.
Used in rehabilitation for lower extremities.
Ex: balance beam routine, squatting.
Open kinetic chain
A distal segment of mobile.
Ex: writing, swinging a bat, swimming.
Concepts of kinetic chains
Movements at different joints become predictable.
Closed and open systems are relative to the body.
The type of system a movement is depends on what the most distal segment can and can’t do.
Arthrokinematic motions
Rolling
Sliding/gliding
Spinning
Distraction and contraction