movement analysis Flashcards
What is a lever?
a solid bar that moves around a fixed point when force is applied
to create movement
what are the 4 parts of a lever?
lever
fulcrum
effort
load
what is a fulcrum?
pivot point
in a diagram what shapes are the parts of the lever?
lever - solid bar
fulcrum - triangle
load - rectangle
effort - arrow
what is the effort?
force applied to lever
what is the load?
the resistance moved by the lever
What is a first class lever?
elbow extension
load - fulcrum - down effort arrow
what is a second class lever
plantar-flexion at ankle
fulcrum - load - up effort arrow
what is third class lever?
fulcrum - effort - load
elbow flexion, knee flexion and extension
what is the formula for mechanical advantage?
load
what has a high mechanical advantage?
2nd class lever
.can lift heavy but not quickly
.can’t do a wide range of movement
what has a low mechanical advantage?
1st and 3rd class levers
.can’t move something heavy but can move it quickly, large range of movement
what are the 3 types of axis?
longitudinal
transverse
sagittal
where does a longitudinal axis go?
head to toe
pirouette
rotation
where does a sagittal axis go?
through your stomach
cartwheel
adduction and abduction
where does transverse axis go?
hip to hip
front flip
flexion and extension
what are the planes?
sagittal
frontal
transverse
what does a sagittal plane do?
splits you through the middle
left and right
flexion and extension
what does the frontal plane do?
splits you front and back
adduction and abduction
what does the transverse plane do?
splits you top and bottom
rotation
sagittal plane pairs with?
transverse axis
transverse plane pairs with?
longitudinal axis
frontal plane pairs with?
sagittal axis
transverse axis pairs with?
sagittal plane
