title: The impact of extended leave on sleep and alertness in the Australian rail industry.
abstract: In the past, scientific studies have investigated the effects of shift timing and duration on sleep and alertness in the rail industry. To our knowledge no research has been conducted to determine the effects of extended break lengths (>48 h) on these factors. Hence, this study analyses the work and rest schedules of 304 Australian rail employees (mean age 41.3 yr, standard deviation 7.4 yr) to determine the effect of prior break lengths (12-169 h) on sleep and subjective alertness at work after periods of leave. Extended break periods (>48 h) were found to increase the length of the sleep prior to returning to work and reduce the total wake time to the end of the first shift, but did not influence levels of subjective alertness immediately prior to the commencement of the first shift. Research into the influence of longer break periods (>169 h) is needed in order to make definitive conclusions regarding sensible return to work policies after extended leave within the Australian rail industry.
authors.affiliation: Centre for Sleep Research, Level 5, Basil Hetzel Institute, The Queen Elizabeth Hospital, Woodville, SA 5011, Australia.
authors.forename: Katie J
authors.initials: KJ
authors.lastname: Kandelaars
authors.forename: Nicole
authors.initials: N
authors.lastname: Lamond
authors.forename: Gregory D
authors.initials: GD
authors.lastname: Roach
authors.forename: Drew
authors.initials: D
authors.lastname: Dawson
mesh_terms: D000328:Adult; D001288:Attention; D001315:Australia; D005221:Fatigue; D005260:Female; D006693:Holidays; D006801:Humans; D008297:Male; D010561:Personnel Staffing and Scheduling; D011890:Railroads; D012890:Sleep / Q000502:physiology*; D020178:Sleep Disorders, Circadian Rhythm / Q000503:physiopathology*; D013995:Time; D014940:Work Schedule Tolerance; D000078329:Workforce