Movement analysis (P1) Flashcards
What movement is produced in first class levers?
Extension at the elbow
What movement is produced at second class levers?
Plantarflexion at the ankle
What movement is produced at third class levers?
Flexion of the elbow
Extension of the knee, shoulder, hip
What is effort?
The force applied by the muscle.
What is resistance?
The pull against the muscle e.g weight of body
Which way do the effort arm arm and resistance arm point in a first class lever?
Effort- down
Weight- down
Which way does the effort arm point for second and third class levers?
Up
Does a first class have a high or low mechanical advantage?
It can have a high or low mechanical advantage depending on how long the weight and effort arm is.
Does a second class lever have a high or low mechanical advantage?
High mechanical advantage
Does a third class lever have a high or low mechanical advantage?
Low mechanical advantage
What can a lever with a high mechanical advantage do?
Carry large load with a small effort.
Can only move short distances at low speeds.
What can a lever with low mechanical advantage do?
Can move load quickly through a large range of movement.
Require a large effort to move a small load.
How do you work out mechanical advantage?
Mechanical advantage= effort arm x weight arm
If a lever has a longer weight arm than effort arm will it have a high or low mechanical advantage?
Low mechanical advantage
What is the axis for the sagittal plane?
Transverse axis
Step Towards
What is the axis for the frontal plane?
Sagittal plane
Fall sideways
What is the axis for the transverse plane?
Longitudinal
Fall Sideways
What type of movement happens at the sagittal plane? And what type of joint movement?
Forwards and backwards.
Extension and flexion.
What movement happens at the frontal plane? And what type of joint movement?
Sideways.
Adduction and abduction.
What movement happens at a transverse plane?
Turn
Circumduction and rotation
How does the sagittal plane separate the body?
Into left and right.
How does the frontal plane separate the body?
Divided the body into front and back.
How does the transverse plane separate the body?
Into top and bottom.
How does the sagittal axis run through the body?
From front to back.
