Podiatry

General Systems for observing movement: subjective or objective


Subjective Analysis - Spectator Analysis

Example analysis: good shot, bad pass, stick the landing, you missed etc.
* always have negative comments in between good comments.
* good comments > negative comments.


Subjective Analysis - Pre-Analysis

- Skill level ( different systems/techniques used for different set of groups )
- The person's aspirations (If the player is here for fun or wants to achieve something)


Subjectvie Analysis - System

System: Preparation, observation, evaluation/diagnosis, intervention, observation (cycle starts again).

Mechanical Models

Mechanical Models of a performance is required to decide on:
- Critical Variables in performance (eg. knee flexion in tennis serving)
- Range of acceptability (eg 90 degree knee flexion)
* Critical variables refer to the variables that have a large role in performance.
* Range of acceptability maybe 90 degrees + or - 10 degrees to give an acceptable range of angle.
* Range of acceptability varies with person's age.

Critical Variables in playing baseball
- maximal external rotation of the shoulder.

Mechanical Model Example:

Mechanical Model for High Jump:

Running Mechanical Model:
Subjective Analysis - Observation:

Phasic Analysis (eg. tennis): Observations of preliminary movements, backswing, forwardswing (impact, release), Follow-through.

Body Area Analysis:
Head & Trunk - Line of sight, shoulder and pelvis alignment/rotations, position of head to COG.

Upper Limb - Position of limbs to the trunk, grip, elbow angle at impact/release, shoulder abduction angle.

Lower Limb - Knee flexion, alignment of feet and hips.

After observing with critical Variables in mind:

- Rank errors (cause and effect), remember the timing of events.


Objective Analysis: Video, Force, EMG

Video; Standard digital and High Speed.
Force: Force platforms to measure pressure on foot etc.
Electromyography: Measures muscle contraction rate and force.

Outcomes: