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Subjective and objective sleepiness among oil rig workers during three different shift schedules.
Sleep Med. 2012 Jan; 13(1):64-72.SM

Abstract

OBJECTIVES

Examine sleepiness in three different shift work schedules (within-subject design) in the offshore oil industry.

METHODS

Sleepiness was measured in 19 oil rig workers, using subjective (Karolinska Sleepiness Scale; Accumulated Time with Sleepiness) and objective measures (reaction time). The work schedule consisted of two weeks of 12 h day work (day shifts), two weeks of 12 h night work (night shifts), and two weeks of swing shift work (one week of night work followed by one week of day work).

RESULTS

Sleepiness was highest during the first days of night and swing shifts, and also in the middle of the swing shift work period, but gradually decreased as the days on the night shift progressed. While at home following the two-week work period, the workers reported more subjective sleepiness after night shift than after day or swing shifts. Reaction time tests during the work period showed no significant differences between the shift schedules. There was a significant shorter reaction time the last day compared to the beginning or middle of the work period.

CONCLUSIONS

Subjective sleepiness was higher during the first days of night work compared to day work, and also when the swing shift workers changed from night work to day work in the middle of the two-week work period. Subjective sleepiness was increased at home following night shifts compared to after day and swing shifts, suggesting that swing shift workers adapted their circadian rhythm during their second period of work, during the day shift week, offshore.

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Authors+Show Affiliations

Waage S
Department of Public Health and Primary Health Care, University of Bergen, Norway. siri.waage@isf.uib.no
Harris A
No affiliation info available
Pallesen S
No affiliation info available
Saksvik IB
No affiliation info available
Moen BE
No affiliation info available
Bjorvatn B
No affiliation info available

MeSH

AdultExtraction and Processing IndustryHumansMiddle AgedOccupational DiseasesPetroleumReaction TimeSleepTime FactorsWakefulnessWork Schedule Tolerance

Pub Type(s)

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

Language

eng

PubMed ID

22033116

Citation

Waage, Siri, et al. "Subjective and Objective Sleepiness Among Oil Rig Workers During Three Different Shift Schedules." Sleep Medicine, vol. 13, no. 1, 2012, pp. 64-72.
Waage S, Harris A, Pallesen S, et al. Subjective and objective sleepiness among oil rig workers during three different shift schedules. Sleep Med. 2012;13(1):64-72.
Waage, S., Harris, A., Pallesen, S., Saksvik, I. B., Moen, B. E., & Bjorvatn, B. (2012). Subjective and objective sleepiness among oil rig workers during three different shift schedules. Sleep Medicine, 13(1), 64-72. https://doi.org/10.1016/j.sleep.2011.04.009
Waage S, et al. Subjective and Objective Sleepiness Among Oil Rig Workers During Three Different Shift Schedules. Sleep Med. 2012;13(1):64-72. PubMed PMID: 22033116.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Subjective and objective sleepiness among oil rig workers during three different shift schedules. AU - Waage,Siri, AU - Harris,Anette, AU - Pallesen,Ståle, AU - Saksvik,Ingvild B, AU - Moen,Bente E, AU - Bjorvatn,Bjørn, Y1 - 2011/10/26/ PY - 2010/12/21/received PY - 2011/04/04/revised PY - 2011/04/08/accepted PY - 2011/10/29/entrez PY - 2011/10/29/pubmed PY - 2012/5/4/medline SP - 64 EP - 72 JF - Sleep medicine JO - Sleep Med VL - 13 IS - 1 N2 - OBJECTIVES: Examine sleepiness in three different shift work schedules (within-subject design) in the offshore oil industry. METHODS: Sleepiness was measured in 19 oil rig workers, using subjective (Karolinska Sleepiness Scale; Accumulated Time with Sleepiness) and objective measures (reaction time). The work schedule consisted of two weeks of 12 h day work (day shifts), two weeks of 12 h night work (night shifts), and two weeks of swing shift work (one week of night work followed by one week of day work). RESULTS: Sleepiness was highest during the first days of night and swing shifts, and also in the middle of the swing shift work period, but gradually decreased as the days on the night shift progressed. While at home following the two-week work period, the workers reported more subjective sleepiness after night shift than after day or swing shifts. Reaction time tests during the work period showed no significant differences between the shift schedules. There was a significant shorter reaction time the last day compared to the beginning or middle of the work period. CONCLUSIONS: Subjective sleepiness was higher during the first days of night work compared to day work, and also when the swing shift workers changed from night work to day work in the middle of the two-week work period. Subjective sleepiness was increased at home following night shifts compared to after day and swing shifts, suggesting that swing shift workers adapted their circadian rhythm during their second period of work, during the day shift week, offshore. SN - 1878-5506 UR - https://www.unboundmedicine.com/medline/citation/22033116/Subjective_and_objective_sleepiness_among_oil_rig_workers_during_three_different_shift_schedules_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1389-9457(11)00259-0 DB - PRIME DP - Unbound Medicine ER -