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A new electrical equipment for handgrip testing.

S Malinen, K Virtanen, M H Frick

    Annals of Clinical Research
    |June 1, 1979
    PubMed
    Summary
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    This study introduces a new electrical device for isometric handgrip testing, improving accuracy over older designs. The improved handgrip testing equipment helps patients maintain consistent force for reliable medical data.

    Area of Science:

    • Biomedical Engineering
    • Medical Device Design
    • Clinical Measurement

    Background:

    • Existing isometric handgrip testing devices have design flaws leading to inaccurate measurements.
    • Accurate handgrip force measurement is crucial for various clinical assessments and research.

    Purpose of the Study:

    • To develop and evaluate a novel electrical device for isometric handgrip testing.
    • To overcome the limitations of previous handgrip testing equipment and enhance data reliability.

    Main Methods:

    • A new U-shaped handgrip transducer and electronic system was designed and constructed.
    • The device measures maximum handgrip force as peak voltage and uses comparators for feedback.
    • A slave monitor with visual cues assists patients in maintaining target force levels.

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    Main Results:

    • The new device accurately captures peak handgrip force as a stored analog voltage.
    • Patient feedback via the slave monitor effectively guided force maintenance at selected percentages.
    • The equipment demonstrated reliable performance in a longitudinal study for hypertension drug treatment.

    Conclusions:

    • The newly developed electrical device significantly improves the accuracy and reliability of isometric handgrip testing.
    • This innovation offers a more precise tool for clinical research and patient monitoring, particularly in studies like hypertension treatment.
    • The design addresses critical constructional deficiencies found in prior isometric handgrip testing apparatus.