Comparison of lifting capabilities of industrial and non-Industrial populations.
Proceedings of the Human Factors Society 30th Annual Meeting, September 29-October 3, 1986, Dayton, Ohio. Santa Monica, CA: Human Factors Society, 1986 Sep; 1:239-243
The differences between the lifting capabilities, expressed in terms of maximum acceptable weight of lift, of experienced industrial populations and inexperienced populations were investigated by comparing sets of data obtained under identical conditions. The data on industrial workers were obtained in an earlier study, while the data for the inexperienced population were recorded by testing 37 male and 37 female students who performed 36 manual lifting tasks. For both sexes, average isometric strength recorded for industrial workers was not significantly different from the value reported for inexperienced students. Maximum acceptable weight of lift, heart rate and oxygen consumption declined with time in both populations, although the corresponding patterns of decline were different. Except for oxygen consumption in females the declines as a function of time were faster for the industrial workers than for the students. For 8 hour shifts, the lifting capabilities of male and female students amounted to 89 percent and 94 percent, respectively of the corresponding capabilities of industrial workers; for 12 hour shifts the respective figure for both sexes was 98 percent. For both sexes the declining trends in the maximum acceptable weight of lift for various tasks for industrial workers and students were similar. The author concludes that experience has a significant effect on the lifting capability of workers and that isometric strength alone cannot describe the lifting capability of an individual.
NIOSH-Grant; Human-factors-engineering; Ergonomics; Weight-factors; Body-mechanics; Task-performance; Physical-capacity; Physical-fitness; Psychophysiological-testing
Proceedings of the Human Factors Society 30th Annual Meeting, September 29-October 3, 1986, Dayton, Ohio
Mechanical and Industrial Engr University of Cincinnati Dept of Mec & Indus Engrg Cincinnati, OH 45221