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Selected movement and force pattern differences in rail- and rung-climbing of fire apparatus aerial ladders at 52.5° slope
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2 2022
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Source: Appl Ergon. 99:103639
[PDF-1.50 MB]
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Alternative Title:Appl Ergon
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Personal Author:
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Description:This study compares human climbing performance, including climbing speed and movement and force patterns, between rail- and rung-climbing styles for a moderate aerial ladder slope (52.5°). Hand and foot movements and forces were recorded for 9 male and 10 female firefighters as they ascended and descended a 3.4-m ladder using elevated handrails (rail-climbing) or rungs (rung-climbing) for hand support. The results indicated that climbers used three or more points of contact 54% of the time for rung-climbing and 100% of the time for rail-climbing. Furthermore, rail-climbing was 10% faster than rung-climbing. In rail-climbing, the lateral hand forces were mostly directed away from the body; while during rung-climbing, they were alternated in lateral and medial directions. Overall, the results suggested that rail-climbing provides better control over body positioning and faster climbing speed. Furthermore, the continuous contact of both hands in rail-climbing may reduce the fall risk by facilitating the recovery from a slip or perturbation.
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Pubmed ID:34753097
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Pubmed Central ID:PMC11298859
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Volume:99
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