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Related Experiment Videos

Hand-held dynamometry reliability in persons with neuropathic weakness

D D Kilmer1, M A McCrory, N C Wright

  • 1Department of Physical Medicine and Rehabilitation, School of Medicine, University of California, Davis, USA.

Archives of Physical Medicine and Rehabilitation
|January 9, 1998
PubMed
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Hand-held dynamometry (HHD) reliably measures maximal isometric strength in individuals with neuropathic weakness. This method is suitable for quick, objective clinical strength assessments.

Area of Science:

  • Neurology
  • Rehabilitation Medicine
  • Biomedical Engineering

Background:

  • Neuropathic weakness impacts daily function and requires objective strength assessment.
  • Hand-held dynamometry (HHD) offers a portable alternative to traditional strength testing methods.
  • Establishing the reliability of HHD in specific patient populations is crucial for clinical application.

Purpose of the Study:

  • To evaluate the test-retest reliability of hand-held dynamometry (HHD) for measuring maximal isometric strength.
  • To compare HHD strength measurements with a criterion standard (fixed dynamometry, FD).
  • To assess HHD reliability in individuals with Hereditary Motor and Sensory Neuropathy, Type I (HMSN) and healthy controls.

Main Methods:

  • Intratester and intertester reliability of HHD were assessed over a 7- to 10-day period.

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  • Maximal isometric torque was the primary outcome measure.
  • HHD measurements were compared to fixed dynamometry (FD) for knee strength in patients with HMSN and controls.

    • Main Results:

    • High intratester reliability (ICC .82–.96) was observed for both HHD and FD across groups.
    • Intertester reliability was generally good (ICC .72–.97), with some exceptions for specific muscle groups in controls.
    • HHD showed lower knee extensor strength compared to FD (p < .01), but similar knee flexor strength.

    Conclusions:

    • Hand-held dynamometry (HHD) demonstrates good reliability for assessing maximal isometric strength in individuals with neurogenic weakness.
    • HHD is a potentially valuable tool for rapid and objective strength evaluation in clinical settings.
    • Further research may explore HHD's utility across a broader spectrum of neuromuscular conditions.