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Angular Motion?
(Rotatry)Movment of an object about a fixed point
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Linear motion?
Straight line from one location to another
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Plane Axis Action
- Frontal Sagittal Abduction/Adduction
- Transverse Vertical Rotations Int L/Ext R
- Sagittal Frontal Flextion/Extension
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Number of axis=
Number of degrees
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Force arm is
Perpendicular distance from the axis to the point of application of force (Muscle attatchment)
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Resistance arm is
Perpendicular distance from axis to the point of application of resistance.
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Resistance Torque=
R X ra
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Classes of levers? Magnifies? Picture?
- I.FAR- Balance, Magnify force, Magnify speed & ROM-Balance,Rock,Circus
- II.ARF- Magnify force-Wheel barrel.
- II.AFR- Magnify speed & ROM-Shovel.
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Open Kinetic Chain
Distal segment of body is free
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Closed kinetic chain
Distal segment of body is fixed(closed)
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