Movement Analysis

• Fulcrum

  Fixed point at which lever turns or is supported
• Load


  Weight / resistance that the lever must move
• Effort


  Force required to move the load
• First Class Lever


  Fulcrum midway between effort and load
• Second Class Lever


  Load between fulcrum and effort
• Third Class Lever


  Effort between fulcrum and load
• Example of First Class Lever


  Throwing a ball
• Example of Second Class Lever


  On tip toes, press up
• Example of Third Class Lever


  Rowing, bicep curl
• What Class Lever is this?

  First

  
• What Class Lever is this?

  Second

  
• What Class Lever is this?

  Third

  
• Mechanical advantage


  Measure efficiency of a lever

  Mechanical advantage = effort arm / load arm
• High or low

  When levers effort arm is longer than its load arm its said to have high mechanical advantage
• High or low

  When a levers load arm is longer than its effort arm its said to have a low mechanical advantage
• Low mechanical advantage


  Can't lift heavy load
• High mechanical advantage


  Can lift heavy load
• Which lever has high mechanical advantage

  Second Class
• Which lever has low mechanical advantage

  Third Class
• FLE


  123
• FAST

  LAST
• Frontal plane


  Splits body front to back
• Sagittal axis


  Goes through body from front to back
• Transverse plane


  Divides body from top to bottom
• Longitudinal axis

  Runs vertical from head to toe
• Sagittal plane


  Splits body left to right
• Transverse axis

  Runs horizontally through body from left to right
• Frontal plane, sagittal axis eaxmple

  Forwards roll
• Transverse plane , longitudinal axis example

  Pirouette, spin
• Sagittal plane, transverse axis example

  Cartwheel