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
Frontal Plane
- Divides the front and back of the body, vertically
- Abduction and Adduction
- Sagittal Axis
- Front to back
- Cartwheel, Star Jumps
Transverse Plane
- Divides the top and bottom of the body, horizontally
- Rotation
- Longitudinal Axis
- Top to bottom
- Throwing a Discus or Hammer
Describe the direction of the transverse axis and name the plane linked with the axis
The transverse axis goes from the side to side, movement will occur in the sagittal plane
Name the plane a somersault occurs in and the axis it occurs
Sagittal Plane
Transverse Axis
Identify the movement possible in the sagittal plane
Extension
What does the fulcrum of a first class lever lie in between?
Effort and Resistance
