A Study of Forced-Pace Work Characteristics at a 33-Foot Working Depth.
MAN FACTORS INC SAN DIEGO CALIF
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Certain human performance characteristics developed during the execution of simple repetitive manual work at a depth of 33 feet were studied in the open sea. The task examined was the counterclockwise rotation of a crank for a period of 10 minutes. Cranking radius was 9 inches and cranking resistance level was 6 pounds. The principal findings are summarized thusly 1. In the self-selected rest work mode statistically significant differences were found as follows a. Breathing gas consumption increased in positively accelerating fashion with increased work load. b. Oxygen uptake increased linearly with increased work load. c. Pulmonary efficiency decreased linearly with increased work load. 2. No significant differences attributable to work-rest periods - work load interactions were found. 3. Traditional ergonomic relationships such as oxygenpulse ratios, Work Pulse Index were found applicable to evaluation of worker efforttask difficulty interactions. Author
- Stress Physiology