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# Biomechanics of Exer

### ISSA Personal Training 9th Edition Unit 5

Acceleration The rate of change of velocity per unit of time.
Angle of Pull The angle at which a muscle pulls relative to the long axis of the bone on which it pulls.
Biomechanics The study of movement
Center of Gravity the point in the body around which your weight is equally distributed.
Direction The way in which the force is applied.
First-class lever Fulcrum in the middle, the effort is applied on one side of the fulcrum and the resistance on another.
Force The interaction that create work, action, or physical change
Fulcrum The point in which a lever rests or is supported and on which it pivots.
Gravity the downward pulling force that creates resistance.
Inertia The tendency for an object to remain in its current state.
Kinesthesis The ability to perceive your position and movement of the body or body climbs in space.
Lever Rigid bar that turns about an axis of rotation or a fulcrum.
Line of action An imaginary straight line drawn from the point of application force through the direction of force.
Line of gravity A vertical line straight down from the center of gravity.
Magnitude How much force is applied to the dumbbells, barbells, or machines.
Mass A body of coherent matter
Momentum The quantity of motion of a moving body, measures as a product of its mass and velocity.
Moving Inertia An object that is in motion will stay in motion unless acted upon by some outside force.
Point of. application Where the force is applied on the body or implement being used.
power The work done in a unit of time
Range of Motion (ROM) The movement of a joint from full flexion to full extension.
Resting Inertia An object is at rest, it will stay at rest unless acted upon by some outside force.
Second-class lever A lever in which the load lies between the fulcrum and the effort.
Stability The ability to maintain a balanced state.
Third-class lever A lever in which the effort is placed between the fulcrum and the load.
torque the magnitude of twist around an axis of rotation.
velocity The speed of something in a given direction
Visual reference point A chosen point to focus to aid in stability and balance.
Work Force times distance. Measured in foot-pounds and simian units.
Created by: pai2015.pi
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