Analyzing sports skills
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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

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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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