Britz C
Rehabilitation (Stuttg). 1975 Nov;14(4):252-9.
Work load evolvers from objectively describable and measurable tasks, which can be adjusted in intensity or duration. These tasks must be performed by different people; showing identical loads, as a rule, produce different effects on different people. This fact, i.e. different persons - different effects with identical loads, is, in ergonomics, operationally called strain (Laurig, W. 1975). Hence, strain is not only the consequence of work load, but also dependent upon the differences inherent in persons under the same load. In addition to the independent of the operations to be performed, there can occur further loads, i.e., physical environment influences. Hence the purpose of testing the work load of the disabled is to assess wide-ranging types of physical and psycho-mental loads with respect to their individual strain intensity and to develop, on the basis of the findings, appropriate proposals for career plans.
工作量源自客观上可描述和可测量的任务，其强度或持续时间可以调整。这些任务必须由不同的人来执行；通常，相同的负荷对不同的人会产生不同的影响。这一事实，即相同负荷下不同的人有不同的影响，在人体工程学中，在操作上被称为应变（劳里格，W. 1975）。因此，应变不仅是工作量的结果，还取决于相同负荷下个体所固有的差异。除了与要执行的操作无关外，还可能出现其他负荷，即物理环境影响。因此，测试残疾人工作量的目的是评估各种类型的身体和心理负荷的个体应变强度，并根据调查结果为职业规划制定适当的建议。
