Semester 1 Exam Flashcards
Agonist
Contracting muscle
Antagonist
Relaxing muscle
Fast Twitch
80%FT 20%ST White fibre Rapid contractions Easily fatigued Anaerobic e.g 100m Sprinter
Slow Twitch
80%FT 20%ST Red Fibres Slow Contractions Resistant to fatigue Aerobic e.g Marathon Runner
Origin
The point at which muscle is attached to non moving bone
Insertion
The point at which the muscle is attached to the moving bone
Contractibility
Shortening of a muscle
Excitability
Muscles response to a nervous stimulus
Flexion
The decreasing the angle of a joint e.g bicep curl
Circumduction
Moving limb in a circular motion that creates a cone shape
Elasticity
Capable of regaining original form when force is removed
Extendibility
Muscles are capable of stretching when force is applied
Extension
Increasing the angle between two bones
Rotation
Moving bone around it’s longitudinal Axis
Speed
Rate at which a body moves from one location to another
Velocity
Is speed in a given direction
Acceleration
Rate at which the velocity of a body changes with respect to time
Distance
Refers to the path of a body as it moves from one location to another
Displacement
Is a measure of motion, found by measuring length of straight line joining a body’s initial and final positions
Linear Motion
How far a body moves, how fast it moves, how consistently it moves
Static Balance
When athlete is required to remain stationary for a period of time e.g shooting
Dynamic Balance
when the athlete is required to alternate body position whilst moving e.g marking afl
1st Law (Inertia)
All bodies will continue in a state of rest or uniform motion in a straight line unless acted upon by some external source
2nd Law (Acceleration)
The acceleration of a body is proportional to the force acting on it and takes place in the direction the force acts
3rd Law (action & reaction)
For every action there is an equal and opposite reaction
Nasal Cavity
Takes air from atmosphere
Moistens
Warming
Filters out dust
Pharynx
Shared passageway of food and air before oesophagus and trachea
Larynx
Voice box
Contains epiglottis to prevent food entering trachea
Trachea
Contains strong cartilage so it doesn’t collapse
Lined with cilia and mucous
Bronchi/Bronchioles
Further branches off trachea for air to travel
Alveoli
1 cell thick air sacs to maximise surface area for gas exchange
Concentration
Ability to focus on the task at hand, on relevant cues
Mental Training Methods
Goal Setting Relaxation Imagery Performance Routine Self Talk
Velocity of Release
Increasing the velocity of release, increase the height of the flight path. Increases overall distance
Height of release
The higher the release will generate greater distances if angle and velocity of release is the same
Lowering and elevating will change the overall distance of the projectile
Self Confidence
Belief that you can successfully perform a task
expectation of success, successful performance, boosts self confidence
