movement analysis

• Planes are imaginary flat surfaces which run through the body dividing it into two describing the direction of movement
• The sagital plane divides the body into left and right sides
• The frontal plane divides the body into front and back
• The transverse plane divides the body into top and bottom
• Axes are imaginary lines which run through the body that the body moves around
• The Sagittal plane goes with the frontal axis for flexion and extension so somersaults and bicep curls can be done
• The frontal plane goes with the sagittal axis so abduction and adduction and cartwheels and star jumps can be done
• The transverse plane and vertical axis go together allowing twisting and rotation for pirouettes and full twists
• The Sagittal axis runs through the body from the front to the back
• The frontal axis runs through the body from left to right
• The vertical axis runs through the body from top to bottom
• The fulcrum is the joint/ pivot point from where s lever rotates
• The load is the force applied by the lever system ( body weight or something picked up)
• The effort is the point where the force is being applied ( muscle)
• Levers are made up of the fulcrum load and effort
• 1st class levers have the fulcrum in the middle
• 2nd class levers have the load in the middle
• 3rd class levers have the effort in the middle
• 2nd class levers can overcome heavy loads with less weight
• 1st class levers move slower and are less flexible
• 3rd class levers cannot lift as heavy loads but cover an increases distance quickly
• A first class lever is the neck joint
• A second class lever is the ankle
• A third class lever is an elbow
• Mechanical advantage is when a large load is lifted with small effort
• Mechanical advantages are found when the distance from the fulcrum to the effort is greater than from the fulcrum to the load
• A mechanical advantaged lever can only move short distances at slow speeds
• 2nd class levers always have a mechanical advantage
• 1st class levers have a mechanical advantage when the fulcrum is closer to the load than the effort
• Mechanical disadvantage is when A large effort is needed to move a load
• Mechanical disadvantaged levers can move the load quickly and through a large range of movement
• 3rd class levers always have a mechanical disadvantage
• 1st class levers have a mechanical disadvantage if the fulcrum is closer to the effort than the load