Week 3 Flashcards
Two types of movement analysis
Qualitative & Quantitative
Qualitative
Implies that description of motion is done without the use of numbers
Quantitative
Implies that description is made with numbers
Advantages of quantitative approach
Measures magnitude
Detect small changes in motion
Objective feedback
Detailed information
Disadvantages of the quantitative approach
Expensive
Can be highly sophisticated
Mathematical
Advantages of qualitative approach
Freely available
Quick, easy, simple
Cheap
Disadvantages of qualitative approach
Requires good background knowledge/experience
Subjective
Difficult to track movement
Most analysis of athletes/activities is done via this approach
Qualitative
Describe a movement pattern
a general series of anatomical
movements that have common elements
of spatial configuration
e.g. Walking, running, jumping, lifting, kicking
Describe a skill
when a general movement pattern is
adapted to the constraints of a particular
task or sport
e.g. high jump, tennis backhand
Describe technique
when a particular type of the same skill is performed
Describe style
individual adaptations to a technique
Two classifications of a skill
Closed and Open skill
What is a closed skill
Performed in a predictable environment
e.g. tennis serve
What is an open skill
Skill is performed in and in response to an unpredictable, changing environment
e.g. tennis return
What is a discrete skill
Defined beginning and end, able to divide into separate phases
e.g. cartwheel
What is a continuous skill
No defined beginning or end, repeated cycles of same movement
e.g. cycling, running, walking
Serial discrete skill
Same as discrete skill, but multiple done in a row
e.g. multiple backflips in a gymnastics routine
Phases of discrete skill
- Preparation
- Movement / Execution
- Recovery / Follow-through
Phases of a continuous skill
Each cycle performed in the same way so we pick and analyse ONE representative cycle and divide that cycle into separate phases
Steps in analyzing movement (4)
Preparation
Observation
Evaluation/diagnosis
Intervention
Preparation stages (5)
- Identify the Overall Performance Objective (OPO) or Goal
of the skill 2. Divide skill into discrete parts Detail each part 3. Identify the mechanical purpose (MP) of each discrete
part to achieve the OPO - List the biomechanical factors (BF) of each discrete part
that enable the accomplishment of the MP - List the critical features (CF)
Describe the importance of the observation stage of analysing a movement
How we are recording or looking at the event. The angle, distance and height we are filming from. Frame rate is important to capture the event in slow motion.
Evaluation stage
Judge quality of movement, assess good and bad points, critique against ‘norm’ and ‘elite’ performance and address cause of error
