Investigation of the Changes in Perceived Sleep Quality and Quantity among Maritime Students in Relation to Long Term Sea Training

ABSTRACT: Maritime students spend a certain period of their training on board, depending on their qualifications. Deck officer candidates (deck cadets) must perform an open sea internship on commercial vessels for one year. Deck officers are among to member of crew with important responsibilities to cooperate with the Master during voyage including being involved in navigation and port watches as well as maintenance of the ship and its safety equipment. Deck cadets perform their practical training between academic education periods according to general practice in Turkey. They can be subjected to unusual working hours and rest periods during the mission on the ship. Considering the importance of adequate sleep for productivity, vigilance, sustaining attention and even over-all health and well-being, it is not only sleep quantity but sleep quality is critical. The aim of this study was to investigate of the effect of the long-term onboard training (aprox. 7 months) on the sleep quantity and quality of the maritime students. Data regarding sleep quantity and perceptive quality among the subjects were obtained by using Pittsburg Sleep Quality Index (PSQI). PSQI is a scale providing information on type and violence of sleep disorders and the quality of sleep during the past month. A total of 60 maritime students were asked to fill PSQI before and after onboard training. Demographical information such as age, gender, weight, height and information regarding the internship were also obtained. Of the students 43.3% rated as poor sleeper before the internship and this ratio increased to 73.3% after the internship. A prominent decrease in sleep quality was determined. Sleep duration did not change significantly. This study showed a significant negative effect of onboard training on sleep quality among participants and they did not recover within a month after returning from the sea which indicates potential long term consequencies.

KEYWORDS: MET System in Turkey, Seafarers Problems, Perceived Sleep Quality, Perceived Sleep Quantity, Maritime Students, Long Term Sea Training, Sea Training, Pittsburg Sleep Quality Index (PSQI)

REFERENCES

Ağargün, M.Y., Kara, H., Anlar, O. 1996. Pittsburgh uyku kalitesi indeksinin geçerliği ve güvenirliği (in Turkish), Türk Psikiyatri Dergisi, 7(2), 107-115

Andruškienė J., Barsevičienė S., Varoneckas G.: Poor Sleep, Anxiety, Depression and Other Occupational Health Risks in Seafaring Population. TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, Vol. 10, No. 1, doi:10.12716/1001.10.01.01, pp. 19-26, 2016

Aysan, E., Karaköse, S., Zaybak, A., Günay-İsmailoğlu, E. 2014. Üniversite Öğrencilerinde Uyku Kalitesi ve Etkileyen Faktörler, Dokuz Eylül Üniversitesi Hemşirelik Fakültesi Elektronik Dergisi, 7(3),193-198

Baert, S., Omey, E., Verhaest, D., Vermeir, A. 2014. Mister Sandman, Bring Me Good Marks! On the Relationship Between Sleep Quality and Academic Achievement, Institute for the Study of Labor, Germany, IZA DP No. 8232, Available at: http://ftp.iza.org/dp8232.pdf , June-2018

Buysse, D.J., Reynolds, C.F.3rd, Monk, T.H., Berman, S.R., Kupfer, D.J., 1989. The Pittsburgh Sleep Quality Index: A new instrument for psychiatric practice and research, Psychiatry Research, May:28(2), 193-213

Calhoun, R. 1999. Human Factors in Ship Design: Preventing and Reducing Shipboard Operator Fatigue, University of Michigan, Available at: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.604.286&rep=rep1&type=pdf , June-2018

Colquhoun, W.P., Rutenfranz, J., Goethe, H. 1988. Work at sea: a study of sleep, and of circadian rhythms in physiological and psychological functions, in watchkeepers on merchant vessels, International Archives of Occupational and Environmental Health, 60:321, doi:10.1007/BF00405665

Çalıyurt, O. 1998. Sirkadiyen uyku uyanıklık düzenini etkileyen iş ve çalışma gruplarında uyku kalitesinin değerlendirilmesi (in Turkish), Master Thesis (Supervisor: Abay E.), Trakya University, School of Medicine, Department of Psychiatry, Edirne

Eliasson, A.H., Lettieri, C.J. 2010. Early to bed, early to rise! Sleep habits and academic performance in college students, Sleep Breath, 14:71, doi:10.1007/s11325-009-0282-2

Epstein, J.E., Mardon, S. 2006. The Harvard Medical School Guide To A Good Night’s Sleep, McGraw-Hill E-books, Harvard College, USA, DOI: 10.1036/0071467432

Gilbert, S.P., Weaver, C.C. 2010. Sleep Quality and Academic Performance in University Students: A Wake-Up Call for College Psychologists, Journal of College Student Psychotherapy, 24:295–306, DOI: 10.1080/87568225.2010.509245

Howell, A.J., Jahrig, J.C., Powell, R.A. 2004. Sleep quality, sleep propensity and academic performance, Perceptual and Motor Skills, 99,525-535.

Hystad, S.W., Eid, J. 2016. Sleep and Fatigue Among Seafarers: The Role of Environmental Stressors, Duration at Sea and Psychological Capital, Safety and Health at Work, 7, 363-371

Jepsen, J.R., Zhao1, Z., Leeuwe, W.M.A. 2015. Seafarer fatigue: a review of risk factors, consequences for seafarers’ health and safety and options for mitigation, International Maritime Health, 66, 2:106–117

Jezewska, M, Leszczyńska, I, Jaremin, B. Work-related stress at sea self estimation by maritime students and officers. Int Marit Health 2006; 57(1-4):66-75.

Karakoç, B. 2009. Uyku kalitesi üzerine bir çalışma: Özel Dal Hastanesi sağlık çalışanları örneği (in Turkish), Master Thesis (Supervisor: Alpar Ş.E.), Marmara University, Institute of Health Sciences, İstanbul

Koçoğlu, D., Tokur-Kesgin, M., Kulakçı, H. 2010. İlköğretim 2.Kademe Öğrencilerinin Uyku Alışkanlıkları ve Uyku Sorunlarının Bazı Okul Fonksiyonlarına Etkisi (in Turkish) / The Influence of Sleep Habits and Sleep, Problems on Some School Functions of Elementary School 2nd Level Students, Hacettepe University Faculty of Health Sciences Nursing Journal, 24–32

Magramo M., Gellada L.: A Noble Profession Called Seafaring: the Making of an Officer. TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, Vol. 3, No. 4, pp. 475-480, 2009

MLC, 2006. Maritime Labour Convention 2006, as amended, ILO

Perez-Chada, D., Perez-Lloret, S., Videla, A.J., Cardinali, D., Bergna, M.A., Fernández-Acquier, M., Larrateguy, L., Zabert, G.E., Drake, C. 2007. Sleep Disordered Breathing And Daytime Sleepiness Are Associated With Poor Academic Performance In Teenagers. A Study Using The Pediatric Daytime Sleepiness Scale (PDSS), SLEEP, Vol. 30, No. 12

Saygılı, S., Çil-Akıncı, A., Arıkan, H., Dereli, E. 2011. Üniversite Öğrencilerinde Uyku Kalitesi ve Yorgunluk (in Turkish), Electronic Journal of Vocational Colleges, December 2011, pg.88-94

STCW, 2010. International Convention on Standards of Training, Certification and Watchkeeping for Seafarers 1978, with 2010 Manila amendments, IMO

Turkish Seafarers Regulation 2016. Gemiadamları Yönetmeliği (in Turkish)

URL-1 https://www.scientificamerican.com/article/fact-or-fiction-can-you-catch-up-on-sleep/ , June-2018

URL-2 (https://www.quora.com/Is-sleep-deprivation-irreversible#) , June-2018

URL-3 https://www.scientificamerican.com/article/fact-or-fiction-can-you-catch-up-on-sleep/ , June-2018

URL-4 https://www.marineinsight.com/case-studies/deck-cadet-dies-on-bulk-carrier-due-to-multiple-crush-injuries/ , June-2018

URL-5 https://timesofindia.indiatimes.com/india/19-year-old-from-lucknow-dies-in-a-ship-in-brussels/articleshow/57948578.cms , June-2018

URL-6 https://www.telegraph.co.uk/news/9209324/Sea-cadet-plunged-to-death-after-falling-from-rigging.html, June-2018

URL-7 https://www.google.com.tr/search?q=%22deck+ cadet%22+%22death%22&ei=4TozW_OUHcuWsAHcurWQDQ&start=0&sa=N&biw=1920&bih=947 , June-2018

Wagner, U, Gais, S, Haider, H, Verleger, R, Born, J. 2004. Sleep inspires insight, Nature, 427(6972):352-355.

Yıldız S., Uğurlu Ö., Yüksekyıldız E.: Occupational Issues and Expectations of Turkish Deck Cadets. TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, Vol. 10, No. 3, doi:10.12716/1001.10.03.04, pp. 403-408, 2016

Yılmaz, H. 2012. Determination of fatigue and sleep states of watchkeeping officers with help EEG and bridge simülatör / Vardiya zabitlerinin yorgunluk ve uykusuzluk hallerinin EEG ve köprüüstü simülatör yardımı ile belirlenmesi (in Turkish), Master Thesis (Supervisor: Başar E.), Karadeniz Technical University, The Graduate School of Natural and Applied Sciences

Yılmaz, H., Başar, E., Ayar, A., Velioğlu, S.K., 2018. Konteyner zabitlerinin günlük MET,uyku süre ve verimliliklerinin metabolik holter ile belirlenmesi (in Turkish) / Measure of the container officers' daily MET, sleep duration and efficiency via metabolic holter. The Proceeding Book of 16.National Neuroscience Congress, 20-23 May 2018, Istanbul Technical University, Istanbul, pp.158

Yılmaz H., Başar E., Yüksekyıldız E.: Investigation of Watchkeeping Officers' Watches Under The Working Hours Ineligible to STCW Regulation. TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, Vol. 7, No. 4, doi:10.12716/1001.07.04.03, pp. 493-500, 2013

Zeek, M.L., Savoie, M.J., Song, M., Kennemur, L.M., Qian, J., Jungnickel, P.W., Westrick, S.C. 2015. Sleep Duration and Academic Performance Among Student Pharmacists, American Journal of Pharmaceutical Education, 79 (5), Article 63

Citation note:

Yılmaz H., Başar E., Ayar A.: Investigation of the Changes in Perceived Sleep Quality and Quantity among Maritime Students in Relation to Long Term Sea Training. TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, Vol. 12, No. 2, doi:10.12716/1001.12.02.09, pp. 291-298, 2018

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