Endurance time and physiological responses to prolonged arm lifting

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

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


The main objective of this study was to examine the effects of prolonged arm lifting tasks on endurance time and physiological responses. Ten male college students participated in the study. The independent variables were the frequency of handling and weight of load. The dependent variables were endurance time, oxygen consumption, minute ventilation, heart rate, and ratings of perceived exertion of the shoulder, arm, back, leg and overall body. The results indicated that: (1) endurance time decreased with an increase in frequency or load; (2) oxygen consumption and heart rate limits were dependent on the interaction of frequency and load; (3) oxygen consumption and heart rate limits for arm lifting were generally lower than limits for leg lifting tasks; and (4) for arm work, average physiological responses recorded over short durations were not significantly different from those based on long durations.

Original languageEnglish (US)
Pages (from-to)335-342
Number of pages8
Issue number3
StatePublished - Mar 1991


  • Endurance time
  • Manual lifting

ASJC Scopus subject areas

  • Human Factors and Ergonomics
  • Physical Therapy, Sports Therapy and Rehabilitation


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