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Abstract
The human body changes its physiological functions throughout the 24-hour day. During waking hours, the body is prepared for physical work, while during the night sleep is normal. Attitudes and behavior also change rhythmically during the day. Work should be arranged to least disturb physiological, psychological, and behavioral rhythms to avoid negative health and social effects and to avoid reductions in work performance (Kroemer, Kroemer and Kroemer-Elbert, [20]).
Notes
Handled by the Department of Work Measurement, Methods and Ergonomics.