Journal article

Associations between number of consecutive night shifts and impairment of neurobehavioral performance during a subsequent simulated night shift

Michelle Magee, Tracey L Stetten, Sally A Ferguson, Ronald R Grunstein, Clare Anderson, David J Kennaway, Steven W Lockley, Shantha MW Rajaratnam

Scandinavian Journal of Work, Environment & Health | SCANDINAVIAN JOURNAL WORK ENVIRONMENT & HEALTH | Published : 2016


OBJECTIVE: This study aimed to investigate sleep and circadian phase in the relationships between neurobehavioral performance and the number of consecutive shifts worked. METHODS: Thirty-four shift workers [20 men, mean age 31.8 (SD 10.9) years] worked 2-7 consecutive night shifts immediately prior to a laboratory-based, simulated night shift. For 7 days prior, participants worked their usual shift sequence, and sleep was assessed with logs and actigraphy. Participants completed a 10-minute auditory psychomotor vigilance task (PVT) at the start (~21:00 hours) and end (~07:00 hours) of the simulated night shift. Mean reaction times (RT), number of lapses and RT distribution was compared betwe..

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University of Melbourne Researchers


Awarded by NHMRC

Funding Acknowledgements

The authors would like to thank Nicole Hennessy, Jade Murray, Dr. Suzanne Ftouni, research staff and students within the School of Psychological Sciences, Monash University and Darren O'Brien, Anna Mullins and Sue Wellington from Woolcock Institute of Medical Research for their assistance with data collection. We thank Mark Salkeld and the Adelaide Research Assay Facility at the University of Adelaide for performing the urine aMT6s radioimmunoassays. This research was supported by NHMRC project grant # 545871.