Analysis

Question 0

Observing movement

Answer 0

Subjective - watching

Objective - taking numbers etc

Question 1

Analysis

Answer 1

Understanding movement

Question 2

Inertia

Answer 2

Resistance

Question 3

Mechanical Model

Answer 3

• Critical variables in performance
- e.g. knee flexion in tennis serving
• Range of acceptability
- e.g. 80 ± 10 knee flexion

Question 4

Running speed

Answer 4

Stride length
Stride rate
Aerodynamics

Question 8

Partially general principles

Answer 8

• Sequential action of muscles.
• Minimisation of inertia (increasing acceleration of movement).
• Impulse generation or absorption.
• Maximising the acceleration path.
• Stability.

Question 9

Specific principles

Answer 9

These apply to the specific sports task under consideration.

Question 12

POSSUM

Answer 12

The purpose observation system of studying and understanding movement. In this approach, the movement is classified by its purpose, which is associated with ‘observable dimensions’ of the movement that the observer evaluates. The focus is a projectile – the whole body of a sports performer or an object, such as a shot.

Question 13

Three subclasses of principles

Answer 13

Universal principles
Partially general principles
Specific principles

Question 14

Universal principles

Answer 14

• Use of the stretch–shortening cycle of muscle contraction.
• Minimisation of energy used to perform the task.
• Control of redundant degrees of freedom in the segmental chain.