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dc.contributor.authorMyllylä, Mikko
dc.contributor.authorKyröläinen, Heikki
dc.contributor.authorOjanen, Tommi
dc.contributor.authorRuohola, Juha-Petri
dc.contributor.authorHeinonen, Olli J.
dc.contributor.authorSimola, Petteri
dc.contributor.authorVahlberg, Tero
dc.contributor.authorParkkola, Kai I.
dc.date.accessioned2022-12-08T05:58:57Z
dc.date.available2022-12-08T05:58:57Z
dc.date.issued2022
dc.identifier.citationMyllylä, M., Kyröläinen, H., Ojanen, T., Ruohola, J.-P., Heinonen, O. J., Simola, P., Vahlberg, T., & Parkkola, K. I. (2022). The Effects of Individual Characteristics of the Naval Personnel on Sleepiness and Stress during Two Different Watchkeeping Schedules. <i>International Journal of Environmental Research and Public Health</i>, <i>19</i>(20), Article 13451. <a href="https://doi.org/10.3390/ijerph192013451" target="_blank">https://doi.org/10.3390/ijerph192013451</a>
dc.identifier.otherCONVID_160485535
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/84216
dc.description.abstractBackground: Naval service can have a significant impact on the wellbeing of seafarers, and the operation of warships is highly dependent on the personnel on board. Nevertheless, there is a lack of knowledge concerning the impact of seafarers’ individual characteristics on their wellbeing in a naval environment. Therefore, the aim of this study was to investigate individual characteristics of the naval personnel that may be associated with the amount of sleepiness, fatigue and stress responses experienced during shift work and irregular working hours in a naval environment. Methods: The study took place on a Finnish Defence Forces’ Navy missile patrol boat on which 18 crewmembers served as study participants. The measurement periods lasted two separate weeks (seven days and six nights) during shift work with two different watchkeeping systems (4:4, 4:4/6:6). The onboard measurements consisted of the Karolinska Sleepiness Scale, salivary stress hormones, cognitive tests (Sustained Attention to Response Task and N-back Task) and heart rate variability. Results: Participants of older ages or with a longer history in naval service were associated with a greater amount of sleepiness, fatigue and stress responses on board. On the contrary, increased physical activity and a higher level of physical fitness, especially standing long jump, were associated with a lower amount of sleepiness, fatigue and fewer stress responses. In addition, an athletic body composition together with a healthy lifestyle may be beneficial, considering the stress responses on board. Conclusion: The present results are well in line with the previous literature regarding shift work and irregular working hours. The results highlight the importance of regular physical activity and good physical fitness during service in the naval environment.en
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherMDPI
dc.relation.ispartofseriesInternational Journal of Environmental Research and Public Health
dc.rightsCC BY 4.0
dc.subject.otherindividual characteristics
dc.subject.otherindividual factors
dc.subject.othershift work
dc.subject.otherwatchkeeping
dc.subject.otherirregular working hours
dc.subject.othersleepiness
dc.subject.otherfatigue
dc.subject.otherstress
dc.subject.othernavy
dc.titleThe Effects of Individual Characteristics of the Naval Personnel on Sleepiness and Stress during Two Different Watchkeeping Schedules
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-202212085478
dc.contributor.laitosLiikuntatieteellinen tiedekuntafi
dc.contributor.laitosFaculty of Sport and Health Sciencesen
dc.contributor.oppiaineLiikuntafysiologiafi
dc.contributor.oppiaineExercise Physiologyen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.type.coarhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.description.reviewstatuspeerReviewed
dc.relation.issn1661-7827
dc.relation.numberinseries20
dc.relation.volume19
dc.type.versionpublishedVersion
dc.rights.copyright© 2022 by the authors
dc.rights.accesslevelopenAccessfi
dc.subject.ysotyön kuormittavuus
dc.subject.ysovuorotyö
dc.subject.ysoepätyypillinen työ
dc.subject.ysoväsymys
dc.subject.ysofysiologiset tekijät
dc.subject.ysomerivoimat
dc.subject.ysovartioveneet
dc.subject.ysoyksilöllisyys
dc.subject.ysostressi
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p129
jyx.subject.urihttp://www.yso.fi/onto/yso/p11242
jyx.subject.urihttp://www.yso.fi/onto/yso/p26843
jyx.subject.urihttp://www.yso.fi/onto/yso/p128
jyx.subject.urihttp://www.yso.fi/onto/yso/p21660
jyx.subject.urihttp://www.yso.fi/onto/yso/p3944
jyx.subject.urihttp://www.yso.fi/onto/yso/p24892
jyx.subject.urihttp://www.yso.fi/onto/yso/p7320
jyx.subject.urihttp://www.yso.fi/onto/yso/p133
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.3390/ijerph192013451
jyx.fundinginformationThe study was funded by the Finnish Defence Forces’ Joint Healthcare and the Navy Command Finland.
dc.type.okmA1


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