Movement Analysis

• What is the first class lever?

  A lever with the fulcrum in the middle
• What is a second class lever?

  A lever with the load in the middle
• What is a third class lever?

  A lever with the effort in the middle
• What are the mechanical advantages and disadvantages of lever systems?

  • Mechanical advantages:
  • Increased force output
  • Greater efficiency in movement
  • Disadvantages:
  • Requires more distance to move load
  • Potential for less stability
• What are the planes of movement?

  Sagittal, frontal, and transverse planes
• What is the sagittal plane?

  A plane that divides the body into left and right
• What is the frontal plane?

  A plane that divides the body into front and back
• What is the transverse plane?

  A plane that divides the body into top and bottom
• What is the frontal axis?

  An axis that runs from front to back
• What is the sagittal axis?

  An axis that runs from left to right
• What is the vertical axis?

  An axis that runs from top to bottom
• What is the summary of movement for planes and axes?

  • Sagittal plane: Flexion and extension
  • Frontal plane: Abduction and adduction
  • Transverse plane: Rotation
  • Axes:
  • Frontal axis: Flexion/extension movements
  • Sagittal axis: Abduction/adduction movements
  • Vertical axis: Rotational movements