An evaluation of the NIOSH guidelines for manual lifting, with special reference to horizontal distance.
An evaluation of the NIOSH guidelines for manual lifting, with special reference to horizontal distance.
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对 NIOSH 手动提升指南的评估，特别参考水平距离。
DOI：
10.1080/15298668991374453
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
A. Garg
中科院分区：
文献类型：
--
作者：
A. Garg
进行了一项实验室研究，以确定能够在最大允许极限(MPL)下举起负荷的受试者的百分比以及相应的能量消耗、心率、L5/S1椎间盘上的压缩力和感觉到的用力等级。第二个目标是比较基于测量的水平距离和国家职业安全与健康研究所(NIOSH)指南(H=15+w/2 cm)中提出的经验法则的MPLS。13名男性受试者被要求以四种不同的频率(0.2、3、6和9次/分钟)和两个高度(地板水平到台阶高度[0.8米]和台阶高度到1.5米)举起三个不同的箱子(25、38和51厘米宽)。每一次托举进行1小时，所有13名受试者在托举起点测量水平距离。计算所有起重任务的最大似然比。使用心理物理学方法来确定电梯的最大可接受重量。然而，这个重量不允许超过相应的MPL。所有13名受试者的最大可接受体重均等于MPLS值。在13名受试者中，有9人表示他们的举重能力明显高于MPLS。对于1.5米高的板凳，MPLS显著大于对应的0.8米高的地板。1小时举重任务的平均心率从104次/分钟到114次/分钟。L5/S1间盘的压力估计在340-598公斤之间。从地板水平到板凳高度和板凳高度到1.5米托举的感觉劳力的平均评分分别为背部12分和9.6分，肩部9.3分和13分。
A laboratory study was conducted to determine the percentage of subjects capable of lifting loads at the maximum permissible limit (MPL) and the corresponding energy expenditure, heart rate, compressive force on the L5/S1 disc, and ratings of perceived exertion. A second objective was to compare MPLs based on measured horizontal distances with those based on the rule of thumb proposed in the National Institute for Occupational Safety and Health (NIOSH) guide (H = 15 + w/2 cm). Thirteen male subjects were required to lift three different boxes (25, 38, and 51 cm wide) at four different frequencies (0.2, 3, 6, and 9 lifts/min) and at two heights (floor level to bench height [0.8 m] and bench height to 1.5 m). Each lift was performed for 1 hr, and horizontal distances for all 13 subjects were measured at the origin of the lifts. MPLs were computed for all lifting tasks. A psychophysical method was used to determine the maximum acceptable weight of a lift. This weight, however, was not allowed to exceed the corresponding MPL. Maximum acceptable weights for all 13 subjects were equal to the MPLs. Of 13 subjects, 9 indicated that they could lift weights significantly greater than the MPLs. MPLs for the bench to 1.5-m height were significantly greater than the corresponding MPLs for the floor to 0.8-m height. The mean heart rate for 1-hr lifting tasks ranged from 104 to 114 beats/min. The estimated compressive force on the L5/S1 disc ranged from 340 to 598 kg. The mean ratings of perceived exertion for floor level to bench height and bench height to 1.5-m lifts were 12 and 9.6 for the back and 9.3 and 13 for the shoulder, respectively.(ABSTRACT TRUNCATED AT 250 WORDS)