@article{ref1,
title="Selected movement and force pattern differences in rail- and rung-climbing of fire apparatus aerial ladders at 52.5° slope",
journal="Applied ergonomics",
year="2022",
author="Fu, Qianyi Albert and Simeonov, Peter and Hsiao, Hongwei and Woolley, Charles and Armstrong, Thomas J.",
volume="99",
number="",
pages="e103639-e103639",
abstract="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.<p /> <p>Language: en</p>",
language="en",
issn="0003-6870",
doi="10.1016/j.apergo.2021.103639",
url="http://dx.doi.org/10.1016/j.apergo.2021.103639"
}