PMID: 18728909Aug 30, 2008Paper

Effects of shift rotation and the flexibility of a shift system on daytime alertness and cardiovascular risk factors

Scandinavian Journal of Work, Environment & Health
Katriina ViitasaloMikko Härmä

Abstract

A controlled intervention study was conducted to evaluate the effects of two changes in shift characteristics on alertness and cardiovascular risk factors: a change in shift rotation (direction and speed) and a change in the flexibility of the shift system. Altogether 84 male workers currently working in a backward-rotating shift system volunteered for the study. A total of 40 men changed to a rapidly forward-rotating shift system, 22 changed to a more flexible shift system, and 22 remained with the old shift system. Health effects were studied with the use of clinical measurements, blood tests, and questionnaires before and after the shift changes. Analyses of variance were used with repeated measures to study associations of cardiovascular risk factors and daytime sleepiness according to the change in shift systems. The mean number of days on which the workers reported sleepiness decreased in the group with the forward-rotating shift system when compared with that of the group on the old shift system (from 2.9 to 2.1 days/week, P=0.02). Systolic blood pressure decreased (from 142 to 136 mm Hg, P=0.049), and heart rate showed a declining trend (from 66 to 60 beats/minute, P=0.06) in the flexible shift system when the three gro...Continue Reading

Citations

Nov 12, 2010·International Archives of Occupational and Environmental Health·Kirsten Nabe-NielsenFinn Diderichsen
Mar 8, 2011·International Archives of Occupational and Environmental Health·Kirsten Nabe-NielsenFinn Diderichsen
Jul 6, 2013·Ergonomics·Kirsten Nabe-NielsenAnne Helene Garde
Jul 28, 2012·BMJ : British Medical Journal·Manav V VyasDaniel G Hackam
Dec 14, 2011·Archives of Cardiovascular Diseases·Yolande EsquirolJean Ferrieres
Jul 20, 2010·Applied Ergonomics·Masaya TakahashiYasumasa Otsuka
Oct 27, 2015·International Journal of Hypertension·Mirnova E CeïdeGirardin Jean-Louis
Mar 17, 2015·American Journal of Industrial Medicine·Johan OhlanderKatja Radon
Mar 23, 2013·Social Science & Medicine·Phyllis MoenErin L Kelly
Dec 1, 2010·Safety and Health at Work·Giovanni Costa
Oct 18, 2014·Ergonomics·Katriina ViitasaloMikko Härmä
Oct 27, 2015·BMC Public Health·Suzanne L MerkusAllard J van der Beek
May 27, 2017·Journal of Sleep Research·Areesa ManodpitipongSirimon Reutrakul
Jan 5, 2011·Scandinavian Journal of Public Health·Clara LlorensSalvador Moncada
Mar 2, 2016·International Journal of Molecular Sciences·Víctor MicóLidia Daimiel
Feb 19, 2010·The Cochrane Database of Systematic Reviews·Kerry JoyceClare Bambra
Oct 26, 2018·The European Journal of Neuroscience·Laura KervezeeDiane B Boivin
Dec 17, 2019·Acta Physiologica·Marina Makrecka-KukaTerje S Larsen
Feb 5, 2014·Journal of Biological Rhythms·Svetlana PostnovaPeter A Robinson
Nov 27, 2019·International Archives of Occupational and Environmental Health·Tae-Won JangKyeong-Sook Choi
Aug 8, 2021·International Journal of Environmental Research and Public Health·Tarja HakolaAnnina Ropponen

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