Movement Analysis Flashcards
what is a lever
rigid bar that turns about an axis to create movement
what is a fulcrum
fixed point at which a lever tunrs
what is the resistance arm
the arm of the lever that must be moved
what is the effort arm
the arm where force is required to move the resistance arm
what is a 1st class lever
a lever where the effort arm and resistance arm are equal length
what is a 2nd class lever
a lever where the effort arm is longer than the resistance arm
what is a 3rd class lever
a lever where the effort arm is shorter than the resistance arm
what is abduction
the movement of limbs away from the torso
what is adduction
movement of limbs towards torso
what is a Plane
imaginary line or surface that divides the body into two where movement occurs
what is an Axis
imaginary line that the body can turn about
what are the 3 planes
Frontal
Transverse
Sagittal
what are the 3 axis
Sagittal
longitudional
transverse
where is each plane
Frontal cuts body into front and back
Transverse cuts body into top and bottom
Sagittal cuts body into left and right
where is each axis
sagittal is through stomach centre
Longitudional is head to toe
Transverse is through hips
