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Stress among naval personnel: Swedish naval forces' workload and demands when participating in training and naval operations
Linköping University, Department of Biomedical and Clinical Sciences, Division of Surgery, Orthopedics and Oncology. Linköping University, Faculty of Medicine and Health Sciences.ORCID iD: 0000-0001-7643-6394
2026 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Background: Swedish naval forces personnel operate continuously under demanding and unpredictable conditions. When on naval operations, employees are exposed to stressful challenges in a constantly moving environment. Training is important to maintain and increase preparedness and can be performed in different ways, for example, in different simulation environments or settings, and the level of realism in the scenario, referred to as low or high fidelity, can vary.

Aim: The overall aim of this thesis was to explore stress and the experience of stress during training and naval operations, foreign and domestic, by measuring workload and demands of Swedish naval forces personnel.

Methods: This thesis comprises five studies. Studies I and II were qualitative, using individual notes of events during an international deployment and in-depth interviews 8 months later. Both studies explored stressors and coping among members of the Swedish naval specialized boarding element. Content analysis was used in the first study, and constant comparative analysis in the second. Studies III, IV and V were quantitative. Study III examined workload among Swedish Special Forces operators during stress week using the National Aeronautics and Space Administration Task Load Index (NASA-TLX). The different tasks were compared using ANOVA. Study IV investigated workload, combat readiness and situation awareness in a naval command and control (C2) team exposed to low- and high-fidelity simulation-based training (SBT), using repeated measures and non-parametric analyses. Study V assessed perceived learning in the same C2 team during low- and high-fidelity SBT using a within-group design. ANOVA, descriptive statistics with means and standard deviation were used for the analysis.

Results: Studies I and II highlighted the importance of preparedness, particularly leadership and team cohesion, for managing stress during naval operations. In Study III, firefighting scenarios generated a higher workload than medical scenarios, likely due to differences in previous training. Studies IV and V showed that low-fidelity SBT produced comparable workload and supported learning similarly to high-fidelity training, indicating cost-effectiveness. Study V may be a springboard for changes in education and learning based on the results presented in this thesis, and thereby may be of benefit to employees in the Armed Forces. The studies have mapped the demands placed on Swedish naval personnel and identified factors that shaped stress, workload and learning.

Conclusions: Strengthening team-building, leadership, and structured SBT can reduce stress and enhance operational readiness. Low-fidelity SBT offers a viable and efficient option for training within the Swedish Armed Forces.

Abstract [sv]

Bakgrund: Personal inom de svenska marina styrkorna tjänstgör kontinuerligt under krävande och oförutsägbara förhållanden. Vid marina operationer exponeras de anställda för stressande utmaningar i en komplex miljö som är i ständig rörelse. För att upprätthålla och stärka beredskapen utgör träning en central komponent, vilken kan genomföras i varierande simulerande miljöer med olika grad av realism (låg- eller hög realism).

Syfte: Det övergripande syftet med denna avhandling var att utforska stress och upplevelsen av stress genom att mäta arbetsbelastning och krav hos personal inom de svenska marina styrkorna i samband med träning och marina operationer, både nationellt och internationellt.

Metoder: Avhandlingen omfattar fem delstudier. Studie I och II var kvalitativa och baserades på individuella anteckningar från en internationell insats samt djupintervjuer åtta månader senare. Båda studierna undersökte stressorer och copingstrategier hos den svenska marinens specialiserade bordningsstyrka. I Studie I användes innehållsanalys och i Studie II konstant jämförande analys. Studie III, IV och V var kvantitativa. Studie III undersökte arbetsbelastning hos svenska operatörer tillhörande specialförbanden under ”stressveckan” med hjälp av NASA-TLX. Resultaten analyserades med ANOVA. Studie IV undersökte arbetsbelastning, stridsberedskap och situations-medvetenhet hos en fartygsledning under SBT i låg- och hög realism, med upprepade mätningar och icke-parametriska analyser. Studie V utvärderade upplevt lärande hos samma fartygsledning under SBT med låg- och hög realism. Inomgruppsdesign användes och till analysen användes ANOVA, deskriptiv statistik med medelvärden och standardavvikelser.

Resultat: Studie I och II betonade betydelsen av god förberedelse, särskilt gällande ledarskap och teambuilding, för att hantera stress under marina operationer. Studie III visade högre arbetsbelastning vid övning i brandbekämpning jämförande med övning i försvarsmedicin, vilket sannolikt reflekterar skillnader i förkunskaper. Studie IV och V visade att SBT i låg- och hög realism genererade jämförbar arbetsbelastning och likvärdiga lärande effekter, vilket indikerar att miljö med låg realism är ett kostnadseffektivt alternativ för SBT. Studie V kan därmed utgöra en möjlig grund för vidare utveckling av utbildnings- och träningsmetoder inom den svenska Försvarsmakten.

Slutsatser: Resultaten i denna avhandling visar att systematiska förberedelser, ledarskap och teambuilding är avgörande för att stärka förmågan att hantera stress i marin kontext. SBT i miljö med låg realism kan komplettera mer avancerad träning i högrealistisk miljö och kan dessutom bidra till ökat lärande och förbättra den operativa förmågan. Resultaten ger både vetenskapliga och praktiska bidrag för att optimera träning/övning inom Försvarsmakten.

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2026. , p. 238
Series
Linköping University Medical Dissertations, ISSN 0345-0082 ; 1774
Keywords [en]
Workload, Demands, Stress, Preparedness, SBT, Learning
National Category
Psychology
Identifiers
URN: urn:nbn:se:liu:diva-222330DOI: 10.3384/9789179294014ISBN: 9789179296834 (print)ISBN: 9789179294014 (electronic)OAI: oai:DiVA.org:liu-222330DiVA, id: diva2:2049466
Public defence
2026-04-23, Bella Donna, building 511, Campus US, Linköping, 09:00
Opponent
Supervisors
Available from: 2026-03-30 Created: 2026-03-30 Last updated: 2026-03-30Bibliographically approved
List of papers
1. Swedish Specialized Boarding Element Members' Experiences of Naval Hostile Duty
Open this publication in new window or tab >>Swedish Specialized Boarding Element Members' Experiences of Naval Hostile Duty
2018 (English)In: Journal of Special Operations Medicine, ISSN 1553-9768, Vol. 18, no 3, p. 45-45Article in journal (Refereed) Published
Abstract [en]

Background: The Swedish naval specialized boarding element participated in Operation Atalanta in 2013 to mitigate piracy by escorting and protecting ships included in the United Nations World Food Program in the Indian Ocean. We describe the experiences of the Swedish naval specialized boarding-element members during 4 months of international naval hostile duty. Some studies have reported experiences of naval duty for the Coast Guard or the merchant fleet; however, we did not find any studies that identified or described experiences of long-time duty onboard ship for the naval armed forces.

Materials and Methods: The respondents wrote individual notes of daily events while onboard. Conventional content analysis was used on the collected data, using an inductive approach.

Results: The findings revealed three broad themes: military preparedness, coping with the naval context, and handling physical and mental strain. Different categories emerged indicating that the participants need the ability to adapt to the naval environment and to real situations.

Conclusion: The Swedish naval forces should train their specialized element members in coping strategies.

Place, publisher, year, edition, pages
Breakaway Media, LLC, 2018
Keywords
Swedish Navy, naval duty, mental strain, coping, qualitative method
National Category
Occupational Health and Environmental Health Other Social Sciences not elsewhere specified
Identifiers
urn:nbn:se:liu:diva-222321 (URN)10.55460/6xhh-1lg1 (DOI)30222836 (PubMedID)
Available from: 2026-03-30 Created: 2026-03-30 Last updated: 2026-03-30Bibliographically approved
2. A Qualitative Study of Swedish Specialized Boarding Element Members' Human Actions in Situations Perceived as New and/or Stressful after Participating in Long-Term Naval Hostile Deployment
Open this publication in new window or tab >>A Qualitative Study of Swedish Specialized Boarding Element Members' Human Actions in Situations Perceived as New and/or Stressful after Participating in Long-Term Naval Hostile Deployment
2020 (English)In: Scandinavian Journal of Military Studies, E-ISSN 2596-3856, Vol. 3, no 1, p. 31-44Article in journal (Refereed) Published
Abstract [en]

Background: Sweden has been part of Operation Atalanta four times since 2009. Being part of an international naval deployment means acting in a substantially different context and environment. The Swedish Armed Forces leadership training includes the use of Wheelan’s IMGD model, whereby trust is a significant part of group dynamics.

Materials and Methods: Interviews took place after deployment when the respondents had been back in Sweden for 8 months. The constant comparative analysis method according to Glaser was used to answer the aim of the study.

Results: Trust was seen as the core of the interviews and was based on three categories: leadership, preparedness and endurance.

Discussion: The core category trust, and the lack of trust, may be a result of poor preparedness. The respondents expressed that they felt safe and secure within their own group. The “us and them” mentality was an important finding, and the cause should be examined more closely to increase trust and team spirit.

Conclusion: The Swedish Navy could benefit from improvement in education, team building and pre-deployment training to increase trust and the level of readiness and to reduce stress.

Place, publisher, year, edition, pages
Scandinavian Military Studies (SMS), 2020
Keywords
Qualitative research, Naval duty, Mental preparedness, Trust
National Category
Sociology
Identifiers
urn:nbn:se:liu:diva-222323 (URN)10.31374/sjms.45 (DOI)2-s2.0-85149531373 (Scopus ID)
Available from: 2026-03-30 Created: 2026-03-30 Last updated: 2026-03-30Bibliographically approved
3. Workload of Swedish Special Forces Operators Experienced During Stressful Simulation Training: A Pilot Study
Open this publication in new window or tab >>Workload of Swedish Special Forces Operators Experienced During Stressful Simulation Training: A Pilot Study
Show others...
2022 (English)In: Journal of Special Operations Medicine, ISSN 1553-9768, Vol. 22, no 3, p. 42-48Article in journal (Refereed) Published
Abstract [en]

Introduction: Stress week was included during training of Special Forces (SF) Operators in Sweden to test their ability and limits for handling stress in different unknown situations and environments at a military training facility in Sweden. The aim of the study was to examine the effects of stress and workload experienced in various tasks during firefighting and military medicine simulation training.

Methods: This pilot study was performed during the second day of stress week. The National Aeronautics and Space Administration Task Load Index (NASA-TLX) is a validated, subjective, and multidimensional assessment tool for rating perceived workload with six subscales: mental demand, physical demand, temporal demand, performance, effort, and frustration. These subscales were used as an indicator of stress experienced. The different tasks were assessed by the SF Operators by rating the NASA-TLX subscales for each task, which were then analyzed and compared using ANOVA.

Results: There was a significant difference between the two simulation exercises assessed by the participants and instructors, and both groups considered firefighting to be more demanding than medical. The participants perceived the mental and physical demands as more demanding in the firefighting exercises, as well as for the level of frustration and effort. However, no differences regarding performance or temporal demands between the simulation exercises were found.

Conclusion: The principle "train as you fight" implies difficult and demanding situations. When exposing Swedish SF Operators to challenging situations, assessment of perceived stress and performance are possible.

National Category
Health Sciences
Research subject
Disaster Medicine
Identifiers
urn:nbn:se:liu:diva-197325 (URN)10.55460/udgu-q4ow (DOI)2-s2.0-85138460036 (Scopus ID)
Available from: 2023-08-31 Created: 2023-08-31 Last updated: 2026-03-30
4. Decision-making during training of a Swedish navy command and control team: a quantitative study of workload effects
Open this publication in new window or tab >>Decision-making during training of a Swedish navy command and control team: a quantitative study of workload effects
Show others...
2025 (English)In: Cognitive Processing, ISSN 1612-4782, E-ISSN 1612-4790, Vol. 26, no 2, p. 303-318Article in journal (Refereed) Published
Abstract [en]

The study compared two simulation environments for training of Swedish naval Command and Control teams by using indirect measures, including workload, combat readiness, and situation awareness. The literature explains simulation-based training as providing a safe avenue to practice relevant scenarios. Fidelity, the degree of realism in the simulation, and workload, the equilibrium between demands and assigned tasks, are crucial factors examined in this study of low- and high-fidelity naval simulations. This study was conducted to better understand the effects of various training methods. An experimental design with repeated measures was used with three consecutive escalating parts. The subjective, multidimensional assessment tool, NASA-Task Load Index was used to rate perceived workload. Combat readiness of the ship and mental demand yielded significant results. For combat readiness of the ship, there was a difference between the low and the high-fidelity setting, for the initial part of the scenario p = 0.037 and for the second part p = 0.028. Mental demand was experienced as higher in the low-fidelity setting, p = 0.036. Notably, the simulated internal battle training for onboard command teams in a low-fidelity setting was found to induce a level of stress comparable with that experienced in a high-fidelity setting. The results indicate that low-fidelity training results in a workload not distinguishable from high-fidelity training and has practical implications for increased use of low-fidelity training as part of (naval) command team training programmes.

Place, publisher, year, edition, pages
SPRINGER HEIDELBERG, 2025
Keywords
Simulations; Workload; Team training; Command and control
National Category
Applied Psychology
Identifiers
urn:nbn:se:liu:diva-210043 (URN)10.1007/s10339-024-01242-9 (DOI)001353842900001 ()39535672 (PubMedID)2-s2.0-85208959901 (Scopus ID)
Note

Funding Agencies|Linkoping University

Available from: 2024-11-27 Created: 2024-11-27 Last updated: 2026-03-30
5. The effects of learning during Swedish naval training: a quantitative study of simulation-based exercises-a case study
Open this publication in new window or tab >>The effects of learning during Swedish naval training: a quantitative study of simulation-based exercises-a case study
Show others...
2024 (English)In: The Journal of Defence Modeling and Simulation: Applications, Methodology, Technology, ISSN 1548-5129, E-ISSN 1557-380XArticle in journal (Refereed) Epub ahead of print
Abstract [en]

Simulation-based training (SBT) has a positive effect on learning. The aim of this study was to examine perceived learning of a command and control (C2) team in a Swedish naval exercise conducted in two settings (low and high fidelity). The participants were part of the permanent C2 team onboard a vessel in the Navy and could maintain their ordinary roles during the SBT. A within-group design was used whereby the C2 team first took part in the low-fidelity setting followed by the high-fidelity setting. The questionnaires used in this study were developed based on the learning objectives for the exercise, and questions were asked as statements. The results indicate that SBT may constitute a learning opportunity. The conclusion of the research highlights the same learning effects in a low-fidelity setting.

Place, publisher, year, edition, pages
SAGE PUBLICATIONS INC, 2024
Keywords
Simulation-based training; learning; exercises; low-and high-fidelity settings; command and control
National Category
Educational Sciences
Identifiers
urn:nbn:se:liu:diva-210689 (URN)10.1177/15485129241288241 (DOI)001380548000001 ()2-s2.0-85212671096 (Scopus ID)
Available from: 2025-01-09 Created: 2025-01-09 Last updated: 2026-03-30

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2930313233343532 of 75
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