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LEVER PLANES AND AXIS (GIGI), LEVER SYSTEM, PLANES OF MOVEMENTS, Axes of…
LEVER PLANES AND AXIS (GIGI)
first class lever: effort arm = load arm E.g. Javelin
adv: the movement can be balanced
dis: only can carry small loads and with a large
second class lever: effort arm > load arm E.g. pirouette
adv: carry large load with small effort
dis: complete in a slower speed and in a small range of motion
third class lever: load arm > effort arm E.g. rowing in water
adv: complete in a fast speed and in a large range of motion
dis: in the reality situation, the effort arm is usually shorter than the load arm
transverse: split through sideways of your body E.g. pirouette
sagittal: split through your body at around your hip E.g. somersault
frontal: split through the midline of your body E.g. Cartwheel
sagittal axis: travel through your body from back to front E.g. Cartwheel
vertical axis: travel vertically straight through your body E.g. pirouette
frontal axis: travel horizontally through your body E.g. somersault
E.G., a ballerina doing a pirouette, fulfilled both the transverse plane and the vertical axis as they moved in the transverse plane and about the vertical axis. And the ballerina is also using the second class lever when the ballerina is on pointe. The second lever allows you to move large loads with little effort.
LEVER SYSTEM
PLANES OF MOVEMENTS
Axes of rotation