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Work Tests to Evaluate Performance

Work Tests to Evaluate Performance. Factors That Contribute to Physical Performance. What the Athlete Gains From Physiological Testing. Information regarding strengths and weaknesses Can serve as baseline data to plan training programs Feedback regarding effectiveness of training program

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Work Tests to Evaluate Performance

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  1. Work Tests to Evaluate Performance

  2. Factors That Contribute to Physical Performance

  3. What the Athlete Gains From Physiological Testing • Information regarding strengths and weaknesses • Can serve as baseline data to plan training programs • Feedback regarding effectiveness of training program • Understanding about the physiology of exercise

  4. Effective Physiological Testing • Relevant to the sport • Valid and reliable • Sport-specific • Repeated at regular intervals • Carefully controlled procedures • Interpreted to the coach and athlete

  5. Testing of Maximal Aerobic Power • VO2max testing • Should be specific to athlete’s sport • Should use large muscle groups • Optimal test length: 10-12 minutes • Criteria of VO2max • Respiratory exchange ratio 1.15 • HR in last stage 10 beats•min-1 of HRmax • Plateau in VO2 with increasing work rate

  6. Determining VO2max

  7. Testing Peak VO2 in Paraplegic Athletes • Paraplegic athletes can be tested using arm exercise • Arm ergometers • Wheelchair ergometers • Highest VO2 measured during arm exercise is not considered VO2max • Called “peak VO2”

  8. Laboratory Tests to Predict Endurance Performance • Lactate threshold • Exercise intensity at which blood lactic acid begins to systematically increase • Blood samples taken during incremental exercise

  9. Lactate Threshold

  10. Ventilatory Threshold

  11. Critical power • Speed at which running speed/time curve reaches plateau

  12. Critical Power

  13. Peak running velocity • Highest speed that can be maintained for >5 seconds

  14. Predicting Performance From Peak Running Velocity

  15. Tests to Determine Running Economy • Measurement of the oxygen cost of running at various speeds • Greater running economy reflected in lower oxygen cost • Higher economy means that less energy is expended to maintain a given speed

  16. Running Economy

  17. Running Economy and LT Results From Incremental Exercise Test

  18. Estimating 10,000m Running Time Using LT and Running Economy • VO2 at LT • 40 ml•kg-1•min-1 • VO2 of 40 ml•kg-1•min-1 • equals running speed of 205 m•min-1 • Estimated 10,000m running time 10,000m  205 m•min-1 = 48.78 min

  19. Energy System Contribution to Maximal Exercise

  20. Ultra short-term tests Tests ATP-PC system Examples Margaria power test Stair running Jumping power tests Running power tests Series of 40-yard dashes Cycling power tests Short-term tests Tests anaerobic glycolysis Examples Cycling tests Wingate test Running tests Sport-specific tests Determination of Maximal Anaerobic Power

  21. The Margaria Power Test

  22. Series of 40-yard Dashes to Test Anaerobic Power

  23. Evaluation of Muscular Strength • Isometric measurement • Static force of muscle using tensiometer • Isotonic measurement • Constant tension • 1 RM lift, handgrip/back-lift dynamometer • Isokinetic measurement • Variable resistance at constant speed • Variable resistance devices • Variable resistance over range of motion

  24. Isometric Measurement Using Cable Tensiometer

  25. Isotonic Measurement Using Dynamometry

  26. Isokinetic Measurement of Strength Using Cybex Dynamometer

  27. Printout From Isokinetic Dynamometer

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