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A controlled intervention study on the effects of a very rapidly forward rotating shift system on sleep-wakefulness and well-being among young and elderly shift workers.
Int J Psychophysiol. 2006 Jan; 59(1):70-9.IJ

Abstract

Shift work is related to problems in sleep/wakefulness and social life. The effects of a very rapidly forward rotating shift system on sleep, health and well-being of young (-45) and elderly (45+) maintenance workers were studied by a controlled intervention study. In the beginning, all the workers had a continuous backward rotating three-shift system. A very quickly forward rotating shift system was developed, avoiding consecutive night shifts and with more free-time between the individual shifts. The effect of the new shift system on sleep/wakefulness and general well-being was studied by questionnaire and field studies including on-site registration of sleep (actigraphy), subjective sleepiness (KSS) and psychomotor performance (PVT). Based on a linear mixed model for repeated measurements, the new shift system increased the main sleep length after the night shift and improved alertness and PVT performance during the night shift among the older workers. Alertness also improved during free-time after the night shift and sleep complaints decreased after all shifts. The workers on the new shift schedule perceived the effects of the new shift system on sleep, alertness, general health, well-being at work, social and family life more positively than the workers in the old shift system. At the end of the study, all subjects voted for the new shift system. It is concluded that although the new shift system increased the operating hours at night, the very rapidly forward rotating shift system had positive effects on the sleep, alertness and well-being of especially the older shift workers.

Authors+Show Affiliations

Brain Work Research Center. Finnish Institute of Occupational Health, Department of Physiology, Topeliuksenkatu 41 a A, 00250 Helsinki, Finland. Mikko.Harma@ttl.fiNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16297476

Citation

Härmä, Mikko, et al. "A Controlled Intervention Study On the Effects of a Very Rapidly Forward Rotating Shift System On Sleep-wakefulness and Well-being Among Young and Elderly Shift Workers." International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology, vol. 59, no. 1, 2006, pp. 70-9.
Härmä M, Tarja H, Irja K, et al. A controlled intervention study on the effects of a very rapidly forward rotating shift system on sleep-wakefulness and well-being among young and elderly shift workers. Int J Psychophysiol. 2006;59(1):70-9.
Härmä, M., Tarja, H., Irja, K., Mikael, S., Jussi, V., Anne, B., & Pertti, M. (2006). A controlled intervention study on the effects of a very rapidly forward rotating shift system on sleep-wakefulness and well-being among young and elderly shift workers. International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology, 59(1), 70-9.
Härmä M, et al. A Controlled Intervention Study On the Effects of a Very Rapidly Forward Rotating Shift System On Sleep-wakefulness and Well-being Among Young and Elderly Shift Workers. Int J Psychophysiol. 2006;59(1):70-9. PubMed PMID: 16297476.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A controlled intervention study on the effects of a very rapidly forward rotating shift system on sleep-wakefulness and well-being among young and elderly shift workers. AU - Härmä,Mikko, AU - Tarja,Hakola, AU - Irja,Kandolin, AU - Mikael,Sallinen, AU - Jussi,Virkkala, AU - Anne,Bonnefond, AU - Pertti,Mutanen, Y1 - 2005/11/16/ PY - 2005/03/23/received PY - 2005/08/19/accepted PY - 2005/11/22/pubmed PY - 2006/3/31/medline PY - 2005/11/22/entrez SP - 70 EP - 9 JF - International journal of psychophysiology : official journal of the International Organization of Psychophysiology JO - Int J Psychophysiol VL - 59 IS - 1 N2 - Shift work is related to problems in sleep/wakefulness and social life. The effects of a very rapidly forward rotating shift system on sleep, health and well-being of young (-45) and elderly (45+) maintenance workers were studied by a controlled intervention study. In the beginning, all the workers had a continuous backward rotating three-shift system. A very quickly forward rotating shift system was developed, avoiding consecutive night shifts and with more free-time between the individual shifts. The effect of the new shift system on sleep/wakefulness and general well-being was studied by questionnaire and field studies including on-site registration of sleep (actigraphy), subjective sleepiness (KSS) and psychomotor performance (PVT). Based on a linear mixed model for repeated measurements, the new shift system increased the main sleep length after the night shift and improved alertness and PVT performance during the night shift among the older workers. Alertness also improved during free-time after the night shift and sleep complaints decreased after all shifts. The workers on the new shift schedule perceived the effects of the new shift system on sleep, alertness, general health, well-being at work, social and family life more positively than the workers in the old shift system. At the end of the study, all subjects voted for the new shift system. It is concluded that although the new shift system increased the operating hours at night, the very rapidly forward rotating shift system had positive effects on the sleep, alertness and well-being of especially the older shift workers. SN - 0167-8760 UR - https://www.unboundmedicine.com/medline/citation/16297476/A_controlled_intervention_study_on_the_effects_of_a_very_rapidly_forward_rotating_shift_system_on_sleep_wakefulness_and_well_being_among_young_and_elderly_shift_workers_ DB - PRIME DP - Unbound Medicine ER -