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Forces exerted during exercises on the uneven bars.

J G Hay, C A Putnam, B D Wilson

    Medicine and Science in Sports
    |January 1, 1979
    PubMed
    Summary
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    This study developed a method to measure forces on uneven bars, finding maximum forces of 3500 N and 2140 N. Gymnastics equipment should withstand at least 4205 N for safety.

    Area of Science:

    • Sports Engineering
    • Biomechanics

    Background:

    • Understanding forces in gymnastics is crucial for equipment safety and performance optimization.
    • Previous methods for measuring forces on uneven bars were limited.

    Purpose of the Study:

    • To develop a reliable technique for measuring forces exerted on uneven bars during gymnastics.
    • To quantify the maximum forces experienced by uneven bars during elite performances.

    Main Methods:

    • Utilized strain gauges, a UV recorder, and motion-picture cameras to capture force data and associated movements.
    • Employed three college gymnasts performing maximal effort routines on the uneven bars.

    Main Results:

    • Maximum recorded forces were 3500 N on the low bar and 2140 N on the high bar.

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  • Peak forces occurred during thigh-bar impacts and under-bar passages in giant swings.

    • Conclusions:

    • Uneven bars must be engineered to withstand repeated loads of a minimum of 4205 N.
    • This accounts for measurement variability and potential use by heavier athletes.