Physical Education Flashcards
What is biomechanics?
The study of: the function and motion of how the body moves and functions
Why do athletes need to know biomechanics?
If they know how their body works they can optimise their performance and see what needs improving with their technique
What is flexion?
Bring out (joint angle decreasing)
What is extension?
Bring in (joint angle increasing)
What is dorsflexion?
Foot going upwards
What is plantarflexion?
Foot going down
What is functional anatomy?
How the anatomy of the body functions
What is inversion?
When you roll your ankle
Outside of foot
What is eccentric?
Movement outwards (down)
What is eversion?
Roll your ankle inside your foot
Inside of foot
What is isometric?
Muscles flexed but no movement
What is some examples of internal forces?
The heart beating
The lungs pumping
What is external force?
Forced added from outside the body
What is an example of external force?
Air resistance, friction
What is abduction?
Moving away from the midpoint of the body
What is adduction?
Moving towards the midpoint of the body
What is concentric?
Contracting muscles (going in)
What is the first law of motion?
The law of inertia
It stays still unless force is added externally
What is the second law of motion?
The law of acceleration
Acceleration = mass and force
What is the third law of motion?
The law of reaction
For every action there is a equal and opposite reaction
What is drag force?
A force generated by air or water in the opposite direction
Define speed
How fast something is moving
What is velocity?
How fast something covers a distance in a certain direction
DIRECTION
Explain acceleration
How quick the velocity changes over time