Chapter 2 - Movement Analysis Flashcards
What positions are the parts placed in a 1st class lever?
Left: Load
Middle: Fulcrum
Right: Effort
What positions are the parts placed in a 2nd class lever?
Left: Fulcrum
Middle: Load
Right: Effort
What positions are the parts placed in a 3rd class lever?
Left: Fulcrum
Middle: Effort
Right: Load
What are examples for each lever?
1st - Throw in in football/rugby
2nd - Press up
3rd - Bicep curl
What is the load arm?
Distance from the load to the fulcrum
What is the effort arm?
Distance from the effort to the fulcrum
What is mechanical advantage?
Measures the efficiency of a lever
What is the mechanical advantage equation?
Mechanical advantage = Effort arm/ load arm
What makes a lever with a high or low mechanical advantage?
High - Effort are is larger than load arm
Low - Load arm is larger than effort arm
What mechanical advantage does each lever have?
1st - Always high
2nd - Always low
3rd - High or low
What are the three planes?
Frontal, Transverse and Sagittal
What are the three axis?
Sagittal, Longitudinal and Transverse
Which planes and axis go together?
- Frontal plane and Sagittal axis
- Transverse plane and Longitudinal axis
- Sagittal plane and Transverse axis
What do the different planes do?
Frontal - Divides body into front and back
Transverse - Divided body into top and bottom
Sagittal - Divides body into left and right
What do the different axis do?
Sagittal - Runs horizontally through body from front to back through belly button
Transverse - Runs horizontally through body from left to right through the hips
Longitudinal - Runs vertically through the body from head to toe
