COMPARISON OF MENTAL PERFORMANCE AND SLEEPINESS BETWEEN 8 AND 12 HRS SHIFT WORKS IN AN OIL REFINERY PLANT IN IRAN

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MAGHSOUDIPOUR M.; KHODABANDEHLOO L.; Piri l.

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Journal: Tibbi- i- kar Year:2015 | Volume:7 | Issue:1 Page(s): 52-62

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Information Journal Paper

Title

COMPARISON OF MENTAL PERFORMANCE AND SLEEPINESS BETWEEN 8 AND 12 HRS SHIFT WORKS IN AN OIL REFINERY PLANT IN IRAN

Author(s)

MAGHSOUDIPOUR M. | KHODABANDEHLOO L. | Piri l. | Issue Writer Certificate

Keywords

12-HOUR AND 8-HOUR SHIFT WORKSQ2

MENTAL PERFORMANCEQ2

REACTION TIMEQ2

FALSE RESPONSESQ2

Abstract

Background: There are different types of shift work programs, each of them has its pros and cons. The purpose of this study was to compare sleep and MENTAL PERFORMANCE in 12-HOUR AND 8-HOUR SHIFT WORKS.Methods: In this longitudinal study, 61 workers from 187 shift workers in one of oil refinery plants were chosen. They were supposed to work in a schedule of 12- hour shift works for 6 months and then return to 8-hour shift works again. We used a demographic questionnaire, sleep diary and PVT software in the beginning and the end of the same shift. Data was collected at the end of 6 months of 12-hour shifts and then after 6 months of 8-hour shifts from the same workers.Results: Total sleep time mean in 12-hour shifts was 6.20 hours and in 8-hour shifts was 6.41 hours, but the difference was not significant. The difference between means of REACTION TIMEs in the beginning of 12-hour shifts (451.80 milliseconds) and 8-hour shifts (416.12 milliseconds) was not significant. The difference between means of REACTION TIMEs in the ending of 12-hour shifts (382.22 milliseconds) and 8-hour shifts (390.98 milliseconds) was not significant either. The difference between means of FALSE RESPONSES in the beginning of 12-hour shifts (3.74) and 8-hour shifts (2.98) was significant. (p<0.05) This difference in the ending of the shifts was significant as well. (3.74 in 12-hour versus 2.36 in 8-hour shifts, p,0.01).Conclusion: Total sleep time in 12- hour shifts is not significantly different from 8-hour shifts. 12-hour shift may decrease mental function (increasing FALSE RESPONSES of PVT in the beginning of 12-hour shifts comparing to 8-hour shift). Different sleep patterns may be an explanation for these findings.

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APA: Copy

MAGHSOUDIPOUR, M., KHODABANDEHLOO, L., & Piri, l.. (2015). COMPARISON OF MENTAL PERFORMANCE AND SLEEPINESS BETWEEN 8 AND 12 HRS SHIFT WORKS IN AN OIL REFINERY PLANT IN IRAN. OCCUPATIONAL MEDICINE, 7(1), 52-62. SID. https://sid.ir/paper/207084/en

Vancouver: Copy

MAGHSOUDIPOUR M., KHODABANDEHLOO L., Piri l.. COMPARISON OF MENTAL PERFORMANCE AND SLEEPINESS BETWEEN 8 AND 12 HRS SHIFT WORKS IN AN OIL REFINERY PLANT IN IRAN. OCCUPATIONAL MEDICINE[Internet]. 2015;7(1):52-62. Available from: https://sid.ir/paper/207084/en

IEEE: Copy

M. MAGHSOUDIPOUR, L. KHODABANDEHLOO, and l. Piri, “COMPARISON OF MENTAL PERFORMANCE AND SLEEPINESS BETWEEN 8 AND 12 HRS SHIFT WORKS IN AN OIL REFINERY PLANT IN IRAN,” OCCUPATIONAL MEDICINE, vol. 7, no. 1, pp. 52–62, 2015, [Online]. Available: https://sid.ir/paper/207084/en

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