movement analysis

fulcrum

the joint where the lever pivots

load

resistance against the pull of the muscle

effort

force applied to the muscle

1st class lever

EFL eg. heading a ball

2nd class lever

ELF eg. a pirouette

3rd class lever

FEL eg. bicep curl

mechanical advantage formula

effort arm / resistance arm

mechanical advantage

1st and 2nd class

mechanical disadvantage

3rd class

planes

imaginary cuts through the body dividing it into parts

axes

the centre around which something rotates

movement at a joint takes place

through a plane and around an axis

sagittal plane

left and right

transverse plane

top and bottom

frontal plane

front and back

frontal axis

front to back

transverse axis

left to right

longitudinal axis

top to bottom

abduction / adduction FAF

frontal plane and frontal axis

rotation TRoL

transverse plane and longitudinal axis

flexion / extension SET

sagittal plane and transverse axis