@article{ref1,
title="The assessment of material handling strategies in dealing with sudden loading: the effects of load handling position on trunk biomechanics",
journal="Applied ergonomics",
year="2014",
author="Ning, Xiaopeng and Zhou, Jie and Dai, Boyi and Jaridi, Majid",
volume="45",
number="6",
pages="1399-1405",
abstract="Back injury caused by sudden loading is a significant risk among workers that perform manual handling tasks. The present study investigated the effects of load handling position on trunk biomechanics (flexion angle, L5/S1 joint moment and compression force) during sudden loading. Eleven subjects were exposed to a 6.8 kg sudden loading while standing upright, facing forward and holding load at three different vertical heights in the sagittal plane or 45° left to the sagittal plane (created by arm rotation). <br><br>RESULTS showed that the increase of load holding height significantly elevated the peak L5/S1 joint compression force and reduced the magnitude of trunk flexion. Further, experiencing sudden loading from an asymmetric direction resulted in significantly smaller peak L5/S1 joint compression force, trunk flexion angle and L5/S1 joint moment than a symmetric posture. These findings suggest that handling loads in a lower position could work as a protective strategy during sudden loading.<p /> <p>Language: en</p>",
language="en",
issn="0003-6870",
doi="10.1016/j.apergo.2014.03.008",
url="http://dx.doi.org/10.1016/j.apergo.2014.03.008"
}