1 / 41

The New Power-Duration Model in WKO4 November 19, 2013 | Andrew R. Coggan, Ph.D.

The New Power-Duration Model in WKO4 November 19, 2013 | Andrew R. Coggan, Ph.D. Importance of new power-duration model. Performance Manager Chart in WKO4. How do you evaluate mathematical models?. Statistical criteria F test Runs test AIC Residuals Distribution Magnitude Bias.

craig
Download Presentation

The New Power-Duration Model in WKO4 November 19, 2013 | Andrew R. Coggan, Ph.D.

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. The New Power-Duration Model in WKO4 November 19, 2013 | Andrew R. Coggan, Ph.D.

  2. Importance of new power-duration model

  3. Performance Manager Chart in WKO4

  4. How do you evaluate mathematical models? • Statistical criteria • F test • Runs test • AIC • Residuals • Distribution • Magnitude • Bias • Parameter estimates • Number • Independence • Precision • External validation

  5. Models of the power-duration relationship CP1-10 CP 3-parameter CP3-30 AIS Pinot and Grappe Ward-Smith )

  6. Limitations of other models: residuals CP1-10 CP 3-parameter CP3-30 AIS Ward-Smith Pinot and Grappe

  7. Limitations of other models: validation CP1-10 CP 3-parameter CP3-30 AIS Ward-Smith Pinot and Grappe (n/a)

  8. Conclusions None of the presently-available models provide a satisfactory description of the entire power-duration relationship. A new model must therefore be developed.

  9. The new power-duration model in WKO4 Part III: Introduction of a superior approach

  10. Modeled vs. actual data: WKO4 model

  11. Definitions of terms • Pmax – the maximal power that can be generated for a very short period of time. Units are W or W/kg. • Functional reserve capacity (FRC) – the total amount of work that can be done during continuous exercise above FTP before fatigue occurs. Units are kJ or J/kg. • Functional threshold power (FTP) – the highest power that can be sustained in a quasi-steady-state for a prolonged period of time. Units are W or W/kg

  12. Intellectual property rights • Registered trademarks are being pursued for the following new terms – unauthorized use is expressly prohibited: • Power-Duration Curve™ • Power Duration Curve™ • P-D curve™ / PD Curve™ • Power-Duration History Chart™ • Power Duration History Chart™ • Functional Reserve Capacity™ • FRC™ • Dynamic Functional Reserve Capacity™ • dFRC™ • Rider Phenotyping™

  13. Modeled vs. actual data: WKO4 model

  14. Distribution of normalized residuals: WKO4 model

  15. Normalized residuals vs. duration: WKO4 model

  16. Independence of param. estimates: WKO4 model Correlation matrix for WKO4 model

  17. CVs of model fit parameters

  18. Model fit parameters in WKO4

  19. External validation: WKO4 model

  20. External validation: WKO4 model

  21. WKO4 vs. other models “It ain’tbraggin’ if you can back it up”

  22. Limitations of other models: residuals CP1-10 CP 3-parameter CP3-30 AIS Ward-Smith Pinot and Grappe

  23. Normalized residuals vs. duration: WKO4 model

  24. Comparison of root mean squared errors

  25. Comparison of FTP prediction

  26. Comparison of parameter estimates

  27. CP2-15 overestimates maximal steady-state McLellan TM, Cheung KSY. A comparative evaluation of the individual anaerobic threshold and the critical power. Med Sci Sports Exerc1992; 24:543-550.

  28. CP1-10 overestimates maximal steady-state Brickely G, Doust J, Williams CA. Physiological responses during exercise to exhaustion at critical power. Eur J ApplPhysiol2002; 88:146-151.

  29. CP2-15 overestimates maximal steady-state Pringle JSM, Jones AM. Maximal lactate steady state, critical power and EMG during cycling. Eur J ApplPhysiol2002; 88:214-226.

  30. Comparison of parameter estimates

  31. FRC vs. W’

  32. Pmax vs. 1 s power

  33. Model is sensitive to changes across years

  34. Model is sensitive to changes across years

  35. Model is sensitive to changes w/in a year

  36. Power-duration history chart in WKO4

  37. Application of the model to running

  38. Application of the model to swimming

  39. Application of the model to skating

  40. The new power-duration model in WKO4 • The most advanced mathematical model of the exercise intensity-duration relationship ever developed.

  41. Next week: the final installment! Current (i.e., WKO4) and possible future applications of the new power-duration model will be presented and discussed.

More Related