Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
32 Cards in this Set
- Front
- Back
Biomechanics
|
the study of movement |
|
Stability
|
the ability to maintained a balanced state
|
|
Force
|
the interaction that creates work, action, or physical change
|
|
Magnitude
|
how much force is applied to the dumbbells, barbells, or machine handles
|
|
Direction
|
the way in which the force is apllied
|
|
Point of Application
|
where the force is applied on the body or implement being used
|
|
Line of Action
|
an imaginary straight line drawn from the point of application of force through the direction of force
|
|
Angle of Pull
|
the angle at which a muscle pulls relative to the long axis of the bone on which it pulls
|
|
Work
|
what happens when a force is applied to an object force times distance |
|
Power
|
the work done in a unit of time
|
|
Newton's First Law
|
an object at rest tends to stay at rest and an object in motion tends to stay in motion
|
|
Inertia
|
the tendency for an object to remain in its current state
|
|
Resting Inertia
|
an object is at rest, it will stay at rest unless acted upon by some outside force
|
|
Moving Interia
|
when an object is in motion it will remain in motion unless acted upon by some outside force
|
|
Range of Motion ROM
|
movement of a joint from full flexion to full extension
|
|
Newtons Second Law of Motion
|
to create force you must place a mass into motion with acceleration and a change in velocity F=MA |
|
Mass
|
A body of coherent matter
|
|
Acceleration
|
the rate of change of velocity per unit of time
|
|
Velocity
|
the speed of something in a given direction
|
|
Momentum
|
the quantity of motion of a moving body, measured as a product of its mass and velocity
|
|
Newton's Third Law of Motion
|
equal and opposite reaction principle objects in contact exert equal and opposite forces on eachother |
|
Lever
|
Rigid bar that turns about an axis of rotation or a fulcrum
|
|
Fulcrum
|
the point on which a lever rests or is supported and on which it pivots
|
|
First Class Lever
|
fulcrum is in the middle, the effort applied on one side of the fulcrum and the resistance on the other
|
|
Second Class Lever
|
the load lies between the fulcrum and the effort
|
|
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
|
|
Gravity
|
the downward pulling force that creates resistance
|
|
Center of Gravity
|
the point in the body around which your weight is equally distributed
|
|
Line of Gravity
|
a vertical line straight down from the center of gravity
|
|
Kinesthesis
|
the ability to perceive your position and movement of the body or body limbs in space
|
|
Visual Reference Point
|
a chosen point of focus to aid in stability an balance
|