Alteration of circadian rhythm in shift-working ambulance personnel. Monitoring of salivary cortisol rhythm
Article Abstract:
A seven-day study of the daily routine cycles, including self-sampling of salivary cortisol rhythm, was carried out on seven shift-working, ambulance employees, to ascertain the relationship between their clinical intolerance to shift work and internal disharmony. Body temperature, grip power of both hands, heart rate, an individual estimation of drowsiness, exhaustion and attention were recorded every four waking hours. The study confirmed that shift-working caused internal disharmony of circadian rhythms in body temperature and hand grip strength but recommended a more detailed examination of salivary cortisol rhythms.
Publication Name: Ergonomics
Subject: Business
ISSN: 0014-0139
Year: 1992
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A procedure to assess shift systems based on ergonomic criteria
Article Abstract:
A procedure that objectively assesses shift systems is presented. In this procedure, the effectiveness of a shift system is assessed according to 14 criteria which reflects the health, family and social life of the workers. Each of the 14 criteria is assessed and given anumerical value, and the total assessment of the shift system is a numerical value that is derived from the 14 assessment values.
Publication Name: Ergonomics
Subject: Business
ISSN: 0014-0139
Year: 1993
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How fast should the night shift rotate?
Article Abstract:
A study was conducted to evaluate the effectivity of work shift variations at two- to three-day intervals as the best method for organizing shift systems. The study also considers preference for longer rotation periods.Results show that permanent zero rotation, fixed-night systems are most effective for night shifts while rapid rotation best applies to morning and afternoon day shifts.
Publication Name: Ergonomics
Subject: Business
ISSN: 0014-0139
Year: 1992
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