Comparison of push/pull force estimates using a single-axis gauge versus a three-dimensional hand transducer.

Applied Ergonomics
Eric B Weston, William S Marras

Abstract

This study investigated the effects of using a single-axis force gauge for push/pull force measurement on kinetic/kinematic measures associated with the exertion and assessed agreement between forces recorded from two technologies (single-axis gauge, three-dimensional hand transducer) and various test conditions via intraclass correlations. Independent measures included exertion type (push, pull, turn), test condition (natural/cart alone, using force gauge at fast/slow/self-selected paces), and cart weight (light, heavy). Dependent measures included mean angles of force application, peak forces recorded from both technologies, and cart velocity. Excellent agreement was observed between technologies (ICC = 0.998). Likewise, peak forces using the single-axis gauge at the fast pace agreed best with the natural test condition (ICC = 0.631). Forces should be measured using a faster initial acceleration and sustained velocity than is prescribed by the current standard if they are to accurately approximate forces relative to existing push/pull guidelines. Future work should also develop recommendations for measuring turning forces.

References

Jun 1, 1984·Journal of Occupational Medicine. : Official Publication of the Industrial Medical Association·B P KleinL M Sanderson
Feb 7, 2001·Ergonomics·M P de LoozeP P Kuijer
Sep 6, 2001·Applied Ergonomics·M J HoozemansH F van der Molen
Jun 23, 2016·Journal of Chiropractic Medicine·Terry K Koo, Mae Y Li
May 28, 2017·Journal of Biomechanics·Alexander M AurandWilliam S Marras

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