Physiological models and guidelines for the design of high frequency shoulder lifting tasks

S. S. Asfour, M. Akcin, M. Tritar, A. M. Genaidy

Research output: Contribution to journalConference articlepeer-review


The main objective of this study is to investigate the effect of weight of load, frequency of handling, and age of industrial workers on endurance time and physiological responses for prolonged lifting tasks from shoulder to reach height, to Sixteen male industrial workers participated in this study. The independent variables were the frequency of handling, the weight of load, and the age of workers. The dependent variables were endurance time, oxygen consumption, minute ventilation, heart rate and the subjective response of the subjects (ratings of perceived exertion). The results indicated that (1) endurance time decreased with increasing frequency or load, (2) Endurance time, heart rate, oxygen consumption and minute ventilation were significantly affected by frequency and load. (3) Age did not have a significant effect on endurance time, heart rate and oxygen consumption but it was significant for minute ventilation.

Original languageEnglish (US)
Pages (from-to)814-817
Number of pages4
JournalProceedings of the Human Factors Society
StatePublished - Jan 1 1991
EventProceedings of the Human Factors Society 35th Annual Meeting Part 1 (of 2) - San Francisco, CA, USA
Duration: Sep 2 1991Sep 6 1991

ASJC Scopus subject areas

  • Engineering(all)


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