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Isokinetic trunk testing and employment

J A Dueker1, S M Ritchie, T J Knox

  • 1Washington University School of Medicine Program in Physical Therapy, St Louis, Missouri.

Journal of Occupational Medicine. : Official Publication of the Industrial Medical Association
|January 1, 1994
PubMed
Summary

Isokinetic trunk testing did not predict lifting ability or future low back injuries in steel mill workers. This functional assessment showed no value for employee selection in this study.

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Area of Science:

  • Occupational health
  • Biomechanics
  • Ergonomics

Background:

  • Isokinetic trunk testing is commonly used to assess job task performance.
  • Its effectiveness in predicting functional lifting capacity and injury risk requires further investigation.

Purpose of the Study:

  • To evaluate the utility of isokinetic trunk testing.
  • To determine if it can identify individuals with limited functional lifting capability.
  • To assess its predictive value for future occupational injury potential.

Main Methods:

  • Two hundred thirty heavy labor applicants in a steel mill participated.
  • Evaluations included job-related lifting ability and isokinetic trunk testing.
  • A 6-year follow-up period monitored occupational low back injuries.

Main Results:

  • No significant differences in isokinetic scores were found between women who met and did not meet lifting criteria.
  • Isokinetic scores did not differ between workers who sustained occupational low back injuries and those who did not.
  • The assessment demonstrated no predictive capability for injury or performance.

Conclusions:

  • Isokinetic trunk testing was ineffective in employee selection for heavy labor roles.
  • The study found no correlation between isokinetic trunk strength and functional lifting capacity or future injury risk.
  • Current findings suggest isokinetic trunk evaluation has limited value in this occupational context.

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