Investigating the Circadian Rhythm Type and its Relation to the Problems Caused by Shift work: a Case Study-Workers in one of Iran’s Iron-Ore Mines
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Mahdiyeh Shafiezadeh Bafghi
,
Mojtaba Moghaddasi
,
Vida Sadat Anoosheh
,
Fatemeh Aminaei
,
Reza Jafari Nodoushan
Abstract
Nowadays, shift work systems are a very common work schedule in developed and industrialized societies. The human body needs to adapt itself to different cycles of sleep and awakening. These will predispose persons to various physical, psychological, and social problems. This study was aimed to investigate the circadian rhythm type among workers in one of Iran’s iron-ore mines. Furthermore, the relationship between the circadian rhythm amplitude and stability was also evaluated. In the present cross-sectional study, 356 persons were investigated who were working in their daily shift work in an iron-ore mine. The samples were collected randomly and for data collection, the standard questionnaires of “Survey of Shift Workers” (SOS) and “Determination Checklist of Circadian” (CTI) were used. Data were analyzed using SPSS software version 11. ANOVA, T-test, and Chi-square tests were applied. According to the research objectives, 356 participants, 75.2% (268 persons) were shift-workers, and 24.8% (88 persons) were fixed-shift workers. The average age of the shift workers was 35.22 ± 5.40 year-olds. In addition, the most frequent reason for choosing a night-shift for the shift workers was organizational constraints (57%). The results showed that working based on shift work schedule had a significant effect on individual activities (p = 0.034) and family life (p = 0.0001) compared to fixed-shift workers. It was also found that among inflexible individuals, problems such as digestive and psychological problems were less specified than shift workers. Shift-workers with stable circadian rhythms showed more flexibility to the sudden changes occurring in their inner rhythm and relatively had less shift-working issues. On the contrary, those who had rigid circadian rhythm, they were resistant to sudden changes. Consequently, these individuals were susceptible to problems caused by shift work. Stability (FR) and amplitude (LV) variables of circadian rhythms can be used as predictive indicators for employment and help to select appropriate individuals for the shift work system to prevent the occurrence of shift-working problems.
2 Guilherme Fialho, Luciano Cavichio, Rui Povoa, João Pimenta., Effects of 24-h shift work in the emergency room on ambulatory blood pressure monitoring values of medical residents. American journal of hypertension, 2006. 19(10): p. 1005-1009.
3 Mehdizadeh, S.M., Assessing the level of serum Cortisol and Aldestrone of nursing personal in various work shifts in Mashhad medical sciences hospitals. Iran Occupational Health, 2009. 6(1): p. 56-60.
4 Nag, A. and P.K. Nag, Do the work stress factors of women telephone operators change with the shift schedules? International journal of industrial ergonomics, 2004. 33(5): p. 449-461.
5 Christopher L. Drake, Timothy Roehrs, Gary Richardson, James K. Walsh, Thomas Roth., Shift work sleep disorder: prevalence and consequences beyond that of symptomatic day workers. Sleep, 2004. 27(8): p. 1453-1462.
6 Roberts, R.D. and P.C. Kyllonen, Morningness–eveningness and intelligence: early to bed, early to rise will likely make you anything but wise! Personality and Individual differences, 1999. 27(6): p. 1123-1133.
7 Hastings, M., J.S. O’Neill, and E.S. Maywood, Circadian clocks: regulators of endocrine and metabolic rhythms. Journal of Endocrinology, 2007. 195(2): p. 187-198.
8 A Pietroiusti, A Forlini, A Magrini, A Galante1, L Coppeta, G Gemma, E Romeo, A Bergamaschi, Shift work increases the frequency of duodenal ulcer in H pylori infected workers. Occupational and environmental medicine, 2006. 63(11): p. 773-775.
9 Di Milia, L., P.A. Smith, and S. Folkard, A validation of the revised circadian type inventory in a working sample. Personality and Individual differences, 2005. 39(7): p. 1293-1305.
10 A Jafari Roodbandi , N Hasheminejad, M Sadeghi, M.R Baneshi, S Haji Maghsoudi, A Rastegari., Internal Consistency and Confirmatory Factor Analysis of Persian version Circadian Type Inventory in Iranian Day Worker and Shift Worker employees, 2011-2012. Iran Occupational Health, 2013. 10(3).
11 Beşoluk, Ş., Morningness–eveningness preferences and university entrance examination scores of high school students. Personality and Individual Differences, 2011. 50(2): p. 248-252.
12 Sylvia Natvik, Bjørn Bjorvatn, Bente Elisabeth Moen, Nils Magerøy, Børge Sivertsen, Ståle Pallesen., Personality factors related to shift work tolerance in two-and three-shift workers. Applied ergonomics, 2011. 42(5): p. 719-724.
13 Parkes, K.R., Shiftwork, job type, and the work environment as joint predictors of health-related outcomes. Journal of Occupational Health Psychology, 1999. 4(3): p. 256.
14 Barton J, Folkard S, Smith L, Poole C J. Effects on health of a change from a delaying to an advancing shift system. Occup Environ Med 1994; 51: 749-55
15 Di Milia, L., P.A. Smith, and S. Folkard, Refining the psychometric properties of the circadian type inventory. Personality and Individual differences, 2004. 36(8): p. 1953-1964.
16 Saberi, H.R. and A.R. Moravveji, Gastrointestinal complaints in shift-working and day-working nurses in Iran. Journal of circadian rhythms, 2010. 8(1): p. 1.
17 Yoo, K.H., Sleeping patterns and gastrointestinal disorders according to the shift works in female textile workers. Korean Journal of Preventive Medicine, 1994. 27(1): p. 74-83.
18 Bilski, B., [Influence of shift work on the diet and gastrointestinal complains among nurses. A pilot study]. Medycyna pracy, 2005. 57(1): p. 15-19.
19 Choobineh, A.; Soltanzadeh, A.; Tabatabaie, S. H. R.; Jahangiri, M., Shift Work-related Health Problems among Petrochemical Industries Employees. Scientific Medical Journal/Majalleh Elmi Peseshki Daneshgahe Elome Pezeshki Ahwaz, 2011.
20 Z Zamanian, H Mohammadi, M.T Rezaeeyani, M Dehghany., An investigation of shift work disorders in security personnel of 3 hospitals of Shiraz University of Medical Sciences, 2009. Iran Occupational Health, 2012. 9(1): p. 52-57.
21 Fischer FM, Paraguay AIBB, Bruni AC, Moreno CRC, Berwerth A, Riviello C. Vianna, M.M, Working conditions, work organization and consequences for health of Brazilian petrochemical workers. International journal of industrial ergonomics, 1998. 21(3): p. 209-219.
22 Knutsson, A., Health disorders of shift workers. Occupational medicine, 2003. 53(2): p. 103-108.
23 F. Debbabi, S. Chatti, I. Magroun, O. Maalel, H. Mahjoub, N. Mrizak., Le travail de nuit: ses répercussions sur la santé du personnel hospitalier. Archives des Maladies Professionnelles et de l'Environnement, 2004. 65(6): p. 489-492.
24 Pronitis-Ruotolo, D., Surviving the Night Shift: Making Zeitgeber work for you. AJN The American Journal of Nursing, 2001. 101(7): p. 63-68.
25 Mazzetti di Pietralata M, Ballarati G, Castracane RE, Galanti A, Gallo A, Leonardi C, Mazzetti di Pietralata G, Mensa A, Zulli L., Digestive disturbances in shift-workers: a clinical statistical investigation. Progress in clinical and biological research, 1989. 341: p. 369-377.
26 A. Choobineh , B. Shahcheragh, S. Keshavarzi, K. Rahnama., Shift work-related problems among operation room technicians of Shiraz University of Medical Sciences hospitals, 2006-2007. Iran Occupational Health, 2007. 4(1): p. 48-52.
27 Costa, G., Shift work and health: current problems and preventive actions. Safety and health at Work, 2010. 1(2): p. 112-123.
28 Birch, A. and T. Malim, From Infancy to Adulthood. 1993: Springer.
29 Bagheri, M. and N. Valizadeh Zare, Effect of Night work on the health of nurses. Journal of Gorgan University of Medical Sciences, 2006. 3(1): p. 43-48.
30 Saremi, M., R. Khanijazani, and P. Tasi, Comparison of fatigue, quality and quantity of sleep in older and younger shiftworkers. Journal of Shahid beheshti university, 2008. 32(2): p. 135-139.
31 Alward, R.R. and T.H. Monk, Supporting shift workers. Journal of nursing administration, 1994. 24(5): p. 53-59.
| Files | ||
| Issue | Vol 11 No 3 (2019) | |
| Section | Original Article(s) | |
| Published | 2019-10-10 | |
| Keywords | ||
| Shift Work Fixed-Shift Work Circadian Rhythm Shift-Working Problems | ||
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