Interpretation of isokinetic tests
This presentation is the property of its rightful owner.
Sponsored Links
1 / 16

Interpretation of Isokinetic Tests PowerPoint PPT Presentation


  • 194 Views
  • Uploaded on
  • Presentation posted in: General

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

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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Interpretation of isokinetic tests

Interpretation of Isokinetic Tests


Concepts

Concepts

  • Introduction

  • Principle of isokinetics

  • Benefits of training through isokinetic exercise

  • Basic terminology

  • Reading test results

  • Curve analysis


Introduction

Introduction

  • Subjective/objective

  • Criteria-based protocols

  • Goals with reproducible data

  • Biodex advantage!


Principles of isokinetics

Principles of isokinetics

  • Preset fixed speed

  • Accommodating resistance

  • Resistance = effort

  • Torque measured throughout ROM

  • Muscle loaded throughout ROM

  • 30 degree overflow

    • Strength

    • physiological


Functional test speeds

Functional Test Speeds

  • Walking – 233°/s

  • Running – 1000°/s – 1200°

  • Ankle during running – 540°/s

  • Train & test at fast speeds


Benefits of training

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


Basic terminology interpretation

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


Reading test results

Reading test results

  • Is the test reliable and valid?

    • Coefficient of variance

    • Large values?

    • Acceptable CV’s (large/small muscle groups)


Reading test results1

Reading test results

  • Percent deficit

    • Acceptable vs unacceptable

    • Negative value?

    • Considerations for unilateral athletes?


Reading test results2

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


Reading test results3

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


Reading test results4

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


Curve analysis

Curve analysis

  • Force Decay Rate

ROM

Involved side

T

FDR

FDR

ROM

Uninvolved side


Summary reports

Summary Reports

  • Absolute/relative

  • Bilateral comparisons

  • Unilateral comparisons


T bw ratio

T:BW Ratio

  • General joint integrity


Summary

Summary

  • Correlate to clinical exam

  • Use pre-established criteria

  • Valid/reproducible or throw out

  • Documents muscular performance only


  • Login