Ch. 1 (Midterm) Flashcards
(14 cards)
Biomechanics
the physics (mechanics) of motion produced by biological systems. More specifically, it’s a highly integrated field of study that examines the forces acting upon, within, and produced by the body
Mechanics
branch of physics specifically concerned with the effects of forces and energy on the motions of the body
Subdivisions of Mechanics (2)
Static
Dynamic
Statics Mechanics
the study of the systems in a state of equilibrium
- at rest or in a constant state of motion
- maybe analyzed by kinetics and/or kinematics
Dynamics Mechanics
the study of systems in a state of accelerated/changing motion
-maybe analyzed by kinetics and/or kinematics
Kinetics
study of forces that create, cause, or alter the motion of a body
-i.e. friction, gravity, pressure
Kinematics
study or description of the spatial and temporal characteristics of motion without regard to the causative forces
-i.e. displacement, acceleration, and velocity
A soccer player injures his knee, what is the kinetic perspective?
How much force was absorbed by the body when making a quick change in direction?
A soccer player injures his knee, what is the kinematic perspective?
How fast was the soccer player moving at the moment of injury?
Kinetic perspective of an infant walking
Why does the infant walk in this manner?
Kinematic perspective of an infant walking
What is the length of the infant’s strides?
Motor Control
mechanics used by the nervous system to control and coordinate movements
Progresses through:
-motor development
-motor learning
Open-Looped movement
happen so quickly that the brain doesn’t have enough time to receive feedback that can influence the current performance
-pitching a baseball
Closed-Loop movement
can be changed during a performance as the brain receives sensory feedback
-catching a fly ball
