SPS - Movement

Skill Acquisition

Science that underpins movement learning and execution

Biomechanics

Living things and mechanical perspective

Categories of fundamental motor skills

• Body management

• Locomoter skills

• Object control skills

3 classifications of motor skills

• movement precision

• type of movement

• predictibility of movement

FIne v Gross motor skills

Fine - use of small muscles associated with precise movement

Gross - use of large muscles more associated with strength and speed

Open vs closed

Open - Less predictable and more variables within environment

Closed - performer has control over environment with few variables

Discrete v Serial v Continuos motor

Discrete - Obvious beginning and end

Continous - no definite beginning or end

serial - combination of discrete skills performed in sequence

Externally vs internally paced

External - Environment controls the rate at which the skill is performed

Internally - where the person performing skill controls the rate at which skill is performed

Massed v distributed

Massed practice - longer, less frequent

Distributed - shorter, more frequent

Blocked v Random practice

Blocked - where the skill is performed repeatedly under same conditions

Random - sequence of motor skills is varied

Complex v Simple

complex skills - are more difficult to learn and to perform and require thought.

Simple - easier to learn and perform

Whole v Part

whole - entire skill is performed

Part - skill is broken down into segments

Intrinsic v Augmented

Intrinsic - feedback comes from within the performer, such as through proprioception or vision

Augmented - Feedback is provided by an external source

Knowledge of performance v Knowledge of results

Knowledge of performance - Feedback based on how the athlete performed the skill.

Results - focuses on the outcome of the skill.

Newton’s 3 laws

• Object will not change it motion unless external unbalanced force acts on it

• force = mass * acceleration

• Every action there is equal and opposite reaction

How are Inertia and mass related

The greater the mass, the greater the inertia .

Momentum

• mass * velocity. heavier object, greater momentum

Impulse

Force * time applied

Force reception

Longer you absorb the force, less force you have to recieve at any moment.

Projectile motion

Looks at the factors that influence the flight path of a projectile.

3 factors affecting projectile motion

• height of release

• angle of release

• speed of release

4 factors affecting stability

• body mass

• Friction between body and contact surface

• base of support

• centre of gravity

3 classes of levers

• first class (axis between the force and resistance arms)

• Second class (resistance between axis + force)

• Third class (force between axis + resistance)