Movement analysis

• Load


  Weight resistance
• Fulcrum


  Axis of joint
• Effort

  Action of muscle/force
• 1st class lever 


  • Effort, fulcrum, load
  • e.g. head butting a ball in football
• 2nd class lever


  • fulcrum, load, efoort
  • e.g. carve raise, take off for a jump
• 3rd class lever


  • e.g. kicking a football
• Mechanical Advantage


  Allows you to move a large output load with a smaller effort
• Mechanical Disadvantage


  Occurs in 3rd class levers, the load arm is longer than the effort arm
• Planes of movement


  • Sagittal (left to right)
  • Frontal (front to back)
  • Transverse (up to down)
• Sagittal plane movements


  • Flexion & extension
• Frontal plane movements


  • Abduction & adduction
• Transverse plane movements


  • Rotational
• Axes of rotation


  • Sagittal
  • Frontal
  • Transverse
• Sagittal plane


  • Running, somersault
• Frontal plane


  • Cartwheel, breaststroke
• Transverse plane


  • Discus, pirouette
• Frontal axis


  • Front to back