Movement Analysis Flashcards
How is a fulcrum represented on a diagram
A triangle
How is effort represented on a diagram
An arrow in the direction the effort is applied
How is the load (resistance) represented on a diagram
As a square
How is a lever represented on a diagram
Straight Line
What factors affects a lever’s type of mechanical advantage?
Distance between resistance and fulcrum
Distance between effort and fulcrum
In the elbow’s third-class lever, how long is the resistance arm?
Very Long
What is the effort in a second-class ankle lever?
The Gastrocnemius
For which activities is a second-class lever ideal?
Lifting Weights
What is mechanical advantage
Efficiency of a working class lever, calculated by effort/weight arm.
Identify the lever system when kicking a ball
Third class lever
Explain the mechanical advantage of the lever system at the ball of the foot in a sprint start.
This is a 2nd class lever, this means there will be a long effort arm compared to the resistance arm, therefore a small amount of effort is needed by the sprinter’s muscles to move her weight to allow her to accelerate.
What are examples of the side-to-side movements that take place in the frontal plane?
Abduction and Adduction
Which of the following is NOT an example of a movement that occurs in the frontal plane?
A. Star Jumps
B. Cartwheel
C. Squats
Squats
Movements on a sagittal plane take place around which sort of axis?
Transverse
Sagittal Plane
- Divides the left and right side of the body vertically.
- Flexion and Extension
- Transverse Axis
- Side to Side
- Somersault , Squats
