Kin 2711: QUALITATIVE ANALYSIS - PowerPoint PPT Presentation

1 / 36
About This Presentation
Title:

Kin 2711: QUALITATIVE ANALYSIS

Description:

Observation is concerned with sensation, perception, and attention to visual stimulus. ... AUDITORY sound of impact, landing, x ski example ... – PowerPoint PPT presentation

Number of Views:82
Avg rating:3.0/5.0
Slides: 37
Provided by: drmoiram
Category:

less

Transcript and Presenter's Notes

Title: Kin 2711: QUALITATIVE ANALYSIS


1
Kin 2711 QUALITATIVE ANALYSIS
  • March 14, 2005
  • Deterministic Models
  • Planning for Observation

2
Movement analysis
  • Identify purpose of skill
  • Simplify the skill divide into parts
  • Determine the mechanical factors that govern the
    parts of the skill
  • Identify critical features

3
(No Transcript)
4
Hays Reading on Deterministic models
How to use the information ???
5
Flight height is a function of speed, angle, air
resistance Flight Height is a function of
velocity and air resistance Flight Height is a
function of vertical velocity and air resistance
6
Change in Angular momentum is a function of
torque and time
7
(No Transcript)
8
A Catalog of Mechanical Factors (McPherson)
LOSE STABILITY - STATIC INSTABILITY MASS
CENTRE OF MASS BASE OF SUPPORT LINE OF GRAVITY
9
SPEED
SKIING SPEED STRIDE LENGTH STRIDE RATE
10
Class Lab Assignments/Activities
  • Assignment 2 DEVELOPMENT OF A DETERMINISTIC
    MODEL Due March 21, 2005
  • 1st draft of project deterministic model part of
    Assignment 2

11
Plan for Observation
  • Movement observation must be systematic in order
    for it to be an effective evaluative tool
  • An observation plan is designed to relate to a
    specific task. Each plan is unique
  • Observers who try to see everything often end up
    perceiving nothing (Barrett, 1979)

12
Observation
  • Observation is concerned with sensation,
    perception, and attention to visual stimulus.
  • Need for selective attention and the adoption of
    filtering strategies to prevent the brain from
    being bombarded by sensory input

13
Perception is the organization and
interpretation of stimuli from our environment,
mediated by our senses.
  • Perception involves organizing, or making sense
    out of , our sensory information (Sage, 1984)

14
Use of the Senses
  • VISION - Primary sense used in QA
  • AUDITORY sound of impact, landing, x ski
    example
  • TOUCH can provide a great deal of info about the
    performance
  • KINESTHETIC PROPRIOCEPTION how did the skill
    movements feel?

15
  • Alignment and symmetry
  • of vertebral units
  • Intersegmental joint mobility

Qualitative Analysis in Chiropractic
16
Factors which affect our ability to
perceive/attend/observe
  • The ability to selectively attend to pertinent
    information is affected by many things.
  • Distractions result in an inability to maintain
    focus
  • NEED TO RECOGNIZE, ELIMINATE OR MINIMIZE

17
External Distractions
  • Intensity
  • Size
  • Contrast
  • Speed, complexity, repetition
  • Movement
  • Teaching area, type and amount of equipment

18
SIMPLE VS COMPLEX
REPETITION
19
VISUAL DISTRACTIONS IN THE OBSERVATION AREA
20
Internal Distractions
  • Motivation
  • Lack of a visual strategy
  • Fear, excitement
  • Observer bias, expectancy

21
Re-examine critical features
Select of observations
Select scanning strategies
Select position
Develop observation plan
22
  • SELECT OF
  • OBSERVATIONS
  • Example 5.7
  • Observe one replay and observe the amount of knee
    flexion at foot plant, at instant of release??
  • Observe several more and estimate again

23
Scanning Strategies
  • Need to be able to search systematically for the
    relevant features. Scanning strategies address
    the following questions.
  • 1. In which part of the display do the perceptual
    systems need to be oriented
  • 2. How to observe various critical features -
    focus vs scan?

24
  • 3. Are there any critical features which can be
    observed simultaneously?
  • Group task

25
Propulsive Foot
Propulsive Foot
Glide Foot
26
Position you must be in the right place at the
right time!
  • If vantage point is not considered other
    observation techniques may be useless. The
    optimum position to view varies from skill to
    skill, feature to feature.
  • Example 3.2

27
(No Transcript)
28
Position Guide
  • 1. Move around during the observation session.
    Different positions provide different info re
    critical features
  • 2. In general the best vantage point is one that
    is at right angles to the place of motion
  • 3. Move far enough away to overcome problems
    associated with the speed of the performer moving
    across the observers field

29
  • 4. When movements extends over some distance the
    best vantage point is opposite the midpoint of
    this distance. The observer must be far away
    enough to see the entire sequence.
  • When focusing on smaller components of the
    movement the observer should be quite close to
    the performer.

30
  • 5. If orientation is important observe in a
    setting which has horizontal or vertical
    reference lines
  • 6. Position to the outside edge of the teaching
    area

31
Constraints on performance
  • Physiological Muscular strength, power,
    endurance, flexibility, and cardiovascular
    functioning
  • Morphological Body size, structure, length of
    limbs
  • Event Constraints may cause the performer to
    alter their movements from a mechanically ideal
    to a less then ideal performance (Eg
    temperature...)

32
  • Aesthetic Considerations Within a technique, a
    performer may use individual modifications such
    as unique timing or movements. These unique and
    individual adaptations are called style.
  • For example - run up pattern in high jump

33
Acceptable response range
34
Readings
  • 1. Qualitative Analysis of Human Movement
    (Knudson Morrison)
  • The Range of Correctness for Critical Features
    p73-74
  • Key Elements in a systematic observational
    strategy p86-92
  • 2. A Catalog of Mechanical Factors (McPherson)
  • (Print this off it will help build your models)

35
Lab Session please sign up for one of the
following 3 labs
  • Wednesday March 16 1230 -2
  • Friday March 18 1230-2
  • Wednesday March 23 1230 -2

36
(No Transcript)
Write a Comment
User Comments (0)
About PowerShow.com