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Related Experiment Videos

Hand dynamometer: effects of trials and sessions.

J R Reddon, W O Stefanyk, D M Gill

    Perceptual and Motor Skills
    |December 1, 1985
    PubMed
    Summary

    This study assessed hand grip strength reliability in 12 right-handed adults over 10 weeks. Results show high test-retest reliability, with some evidence of fatigue and skill acquisition effects in specific groups.

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    Area of Science:

    • Kinesiology and Biomechanics
    • Human Performance Measurement

    Background:

    • Assessing hand grip strength is crucial for evaluating neuromuscular function and physical capacity.
    • Understanding the reliability and potential influencing factors (fatigue, skill acquisition) of grip strength measurements is essential for accurate research and clinical applications.

    Purpose of the Study:

    • To determine the test-retest reliability of hand grip strength measurements over a 10-week period.
    • To investigate the effects of fatigue and skill acquisition on grip strength measurements in healthy adults.

    Main Methods:

    • Twelve self-reported right-handed subjects (6 men, 6 women) participated in the study.
    • Hand grip strength was measured using a hand dynamometer, with 10 trials per hand across 10 consecutive weeks.
    • Statistical analyses were performed to assess reliability, fatigue, and skill acquisition effects.

    Main Results:

    • High test-retest reliability was observed, with averages of .91 for men and .94 for women across both preferred and non-preferred hands.
    • Statistically significant fatigue effects were noted for both sexes and hands, except for women's preferred hand.
    • Skill acquisition effects were significant only for men's non-preferred hand and women's preferred hand.

    Conclusions:

    • Hand grip strength measurements demonstrate high reliability in healthy adults over a 10-week period.
    • Fatigue influences grip strength measurements, though this effect varies between sexes and hands.
    • Skill acquisition can impact grip strength performance, particularly in specific hand/sex combinations.

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