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Analyzing Sports Skills. Qualitative vs Quantitative Qualitative Visual observation Quantitative Physical measurements of time, force, etc. Can be an expensive process!. Analyzing Sports Skills. McGinnis process Description Develop a theoretical model of performance Observation

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analyzing sports skills
Analyzing Sports Skills
  • Qualitative vs Quantitative
    • Qualitative
      • Visual observation
    • Quantitative
      • Physical measurements of time, force, etc.
      • Can be an expensive process!
analyzing sports skills1
Analyzing Sports Skills
  • McGinnis process
    • Description
      • Develop a theoretical model of performance
    • Observation
      • Watch technique of individual
    • Evaluation
      • Compare ideal technique to the observed performance
    • Instruction
      • Provide feedback and instruction
analyzing sport skills
Analyzing Sport Skills
  • Determine the Objectives of the Skill
  • Special Characteristics of the Skill
  • Study Top-Flight Performances of the Skill
  • Divide the Skill Into Phases
    • Preparatory Movements and Mental Set
    • Wind-up (Backswing, etc.)
    • Force-Producing Movements
    • Follow-Through (Recovery)
  • Divide Each Phase Into Key Elements
  • Understand the Mechanical Reasons
identifying and correcting errors
Identifying and Correcting Errors
  • Observe the Complete Skill
    • Determine optimal viewing points
    • Safety concerns for coach and athlete during viewing
    • Uninterrupted execution of the skill
  • Analyze Each Phase and its Key Elements
    • Backward approach
  • Knowledge of Biomechanics and Physiology
  • Select the Errors
  • Methods to correct the Errors
example analysis
Example Analysis
  • Sprint Running (pg 308)
    • Cyclic skill
    • Stride length + Stride frequency
    • Race components
      • Start
      • Acceleration phase
      • Velocity maintenance phase
      • Finish
step 1 theoretical basis
Step #1: Theoretical Basis
  • Develop theoretical basis
    • Purpose of running the 100 meter dash
    • Performance criterion would be 100 meter dash time
    • Develop performance criterion for each phase
      • Start components and time factor
      • Acceleration phase components and time factor
      • Velocity maintenance components
      • Finish components

Average Velocity = Step length x Stride frequency

what makes a sprinter fast
What makes a sprinter fast?
  • Horizontal displacement affects horizontal velocity
    • Force applied to the ground during support phase is related to the friction force between the runner’s shoe and the ground
    • Negative work component (Eccentric loading)
      • Support phase
    • Positive work component (Concentric contractions)
      • Propulsive phase
      • Speeds up the runner
what makes a sprinter fast1
What makes a sprinter fast?
  • Flight time is affected by vertical velocity
    • CG height at takeoff
    • CG height upon landing
    • Average drag force due to air resistance
  • Figure 13.14 (pg 311)
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