1 / 16

Interpretation of Isokinetic Tests

Interpretation of Isokinetic Tests. Concepts. Introduction Principle of isokinetics Benefits of training through isokinetic exercise Basic terminology Reading test results Curve analysis. Introduction. Subjective/objective Criteria-based protocols Goals with reproducible data

jetta
Download Presentation

Interpretation of Isokinetic Tests

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. Interpretation of Isokinetic Tests

  2. Concepts • Introduction • Principle of isokinetics • Benefits of training through isokinetic exercise • Basic terminology • Reading test results • Curve analysis

  3. Introduction • Subjective/objective • Criteria-based protocols • Goals with reproducible data • Biodex advantage!

  4. Principles of isokinetics • Preset fixed speed • Accommodating resistance • Resistance = effort • Torque measured throughout ROM • Muscle loaded throughout ROM • 30 degree overflow • Strength • physiological

  5. Functional Test Speeds • Walking – 233°/s • Running – 1000°/s – 1200° • Ankle during running – 540°/s • Train & test at fast speeds

  6. Benefits of training • Time rate of tension development (TRTD) • Upslope of the curve • Decreased reciprocal innervation time (RIT) • Time between end of agonist and beginning of antagonist

  7. Basic Terminology/Interpretation • Peak torque: • Absolute strength value (1 RM) • Work: • Functional value of muscle performance • Torque over distance • Power: • How effective the muscle can perform work over time

  8. Reading test results • Is the test reliable and valid? • Coefficient of variance • Large values? • Acceptable CV’s (large/small muscle groups)

  9. Reading test results • Percent deficit • Acceptable vs unacceptable • Negative value? • Considerations for unilateral athletes?

  10. Reading test results • Peak torque • Difficult to assess if used alone • Peak torque/body weight • % of torque produced to body weight • Normative goals - see chart

  11. Reading test results • Max rep total work • Better indicator of neuromuscular function • Muscle must remain recruited during entire range • Should occur within first few reps of test • Work first 1/3..work last 1/3 • Should be more work in first 1/3 • Look for consistency • Effort

  12. Reading test results • Work fatigue • Ratio between first 1/3 and last 1/3 • Should decrease with progress • Acceleration time • Time to reach isokinetic speed • Deceleration time • From isokinetic speed to zero • Eccentric control towards end of ROM

  13. Curve analysis • Force Decay Rate ROM Involved side T FDR FDR ROM Uninvolved side

  14. Summary Reports • Absolute/relative • Bilateral comparisons • Unilateral comparisons

  15. T:BW Ratio • General joint integrity

  16. Summary • Correlate to clinical exam • Use pre-established criteria • Valid/reproducible or throw out • Documents muscular performance only

More Related