Impact of two postural assist exoskeletons on biomechanical loading of the lumbar spine
Impact of two postural assist exoskeletons on biomechanical loading of the lumbar spine
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DOI：
10.1016/j.apergo.2018.09.006
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发表时间：
2019-02-01
影响因子：
3.2
通讯作者：
Marras, William S.
中科院分区：
文献类型：
--
作者：
Picchiotti, Michael T.;Weston, Eric B.;Marras, William S.
这项研究评估了佩戴两种市售姿势辅助外骨骼时腰部的负荷。十名男性受试者使用蹲式举升技术，在使用或不使用任何外骨骼的情况下，将一个盒子从多个举升起点（垂直高度和不对称性的组合）举升到一个共同目的地。相关测量包括受试者运动学、躯干或被举起的重物与腰椎之间的力臂，以及肌电图驱动脊柱模型预测的脊柱负载。所测试的一种外骨骼（StrongArm Technologies (TM) FLx）减少了胫骨提升起点处的躯干峰值屈曲，但没有观察到任何一种干预措施导致的力臂或脊柱负载的差异。因此，设计用于控制姿势的工业外骨骼可能无助于减少腰椎上的生物力学负荷。当实施可行时，改变外部手动物料搬运环境（提升原点、负载重量）的干预措施可能更合适。
This study evaluated loading on the low back while wearing two commercially available postural assist exos-keletons. Ten male subjects lifted a box from multiple lift origins (combinations of vertical height and asymmetry) to a common destination using a squatting lifting technique with and without the use of either exoskeleton. Dependent measures included subject kinematics, moment arms between the torso or weight being lifted and the lumbar spine, and spinal loads as predicted by an electromyography-driven spine model. One of the exoskeletons tested (StrongArm Technologies (TM) FLx) reduced peak torso flexion at the shin lift origin, but differences in moment arms or spinal loads attributable to either of the interventions were not observed. Thus, industrial exoskeletons designed to control posture may not be beneficial in reducing biomechanical loads on the lumbar spine. Interventions altering the external manual materials handling environment (lift origin, load weight) may be more appropriate when implementation is fesible.