The Effect of Shift Rotation on Employee Cortisol Profile, Sleep Quality, Fatigue, and Attention Level

Abstract

Disturbed circadian rhythm in humans has been associated with a variety of mental and physical disorders and may negatively impact on work safety, performance, and productivity.

Cortisol awakening response - Are sampling delays of 15minutes acceptable?

“…They are temporarily reduced e.g. after day sleep during real or experimental night work periods (Federenko et al, 2004;Robens, 2008, 2010;Niu et al, 2011) or after alcohol intake the previous evening (Stalder et al, 2009). Larger CARs are associated with stress (Chida and Steptoe, 2009;Kunz-Ebrecht et al, 2004).…”

Personality, hedonic balance and the quality and quantity of sleep in adulthood

“…Because personality reflects individual differences in emotion, cognition and behaviour, there are numerous pathways through which personality might be connected to sleep. For example, personality relates to lifestyle choices such as occupational pursuits, diet and physical activity (Allen, Vella, & Laborde, 2015a;Lunn, Nowson, Worsley, & Torres, 2014;Michel, Clark, & Jaramillo, 2011) that have all been found to affect the duration and quality of sleep in adulthood (Magee, Lee, & Vella, 2014;Niu et al, 2011;Yang, Ho, Chen, & Chien, 2012).…”

Examining courses of sleep quality and sleepiness in full 2 weeks on/2 weeks off offshore day shift rotations

“…In previous research, sleepiness has been directly linked with workplace health and safety outcomes. For example, prolonged sleepiness, because of inadequate sleep opportunity and recovery, has been shown to decrease work performance and to lead to more incidents (Niu et al 2011). Moreover, usually KSS items follow a stable diurnal U-shaped rhythm with higher KSS scores in the morning and late afternoon (Åkerstedt et al 2014).…”