Movement Analysis Flashcards
What are all lever systems?
Joints
What is the function of a lever?
To increase the speed at which a body part can move
What are the 3 parts of a lever system and how are each of them represented?
The fulcrum( a triangle)
The load (a square/rectangle)
The effort ( an arrow pointing in the way the effort in moving)
In a lever system diagram what does the straight line represent?
The lever arm
What is the fulcrum?
The point of movement generally at the centre of a joint
What is the load?
This is the body’s weight or an external object eg a dumbel that moves as a result of the effort on the lever
What is the effort?
A muscular force that moved the load
Is a first class lever mechanical advantage or disadvantage?
Mechanical advantage
Describe the lever system if a 1st class lever
Fulcrum is bellow the lever arm and in the middle, the load is on the left and the effort is on the right pointing down
Is a second class lever mechanical advantage or disadvantage?
Mechanical advantage
Describe the lever system of a second class lever
Fulcrum is below the lever arm and on the right, the load is in the middle and the effort is on the left pointing up
Is a 3rd class lever mechanical advantage or disadvantage?
Mechanical disadvantage
Describe the lever system of a 3rd class lever
The fulcrum is on the left and below the lever arm, the effort is in the middle and pointing up and the load is on the right
Give a sporting example of a first class lever
When the head and neck are extended and fixed eg when heading a football
Give a sporting example of a second class lever
A diver standing on his toes as they prepare to take off from the board
Give a sporting example of a 3rd class lever
Upwards phase of a bicep curl
What is the fulcrum always?
A joint
What is the load always?
The resistance/ weight
What is the effort always?
Muscular force
What is the lever arm always?
The bone
What is mechanical advantage?
Being able to move large load with a smaller effort
What is mechanical disadvantage
When a lever’s load arm is longer than its effort arm
What are the 3 planes of movement?
Sagitall
Frontal
Transverse
What is the Sagitall plane of movement?
The plane of movement that Divides the body left to right
What is the Frontal plane of movement?
The plane of movement that divided the body front and back
What is the transverse plane of movement?
The plane of movement that divided the body into upper and lower halves
What are the 3 axes of rotation?
Longitudinal
Frontal
Transverse
How does the longitudinal axes of rotation run through the body?
Top to bottom
How does the frontal axes of roar aroun split the body?
Horizontally, back to front
How does the transverse axes of rotation split the body?
Horizontally left to right through the hips
Which planes of movement link to each axis of rotation?
Sagitall plane - Transverse axes
Frontal plane - Frontal axes
Transverse plane - Longitudinal axes
