Analysis of the Manual Lifting of Loads in Operators: Evaluation of Efforts

This article presents the results of evaluations mechanical stresses associated with performance manual lifting tasks loads and those operators must endure in their workplaces, considering these most recurrent cases positions. study is based on a static analysis certainspecific positions human body, transmission forces through musculoskeletal structure, generation efforts at critical points body. In addition to this, it considered revision criteria Spanish Technical Standard NTP-477. There are structure that support considerable efforts, recommendations provided by NTP-477 relevant although limited, provide an adequate margin safety avoid injury workers.