Health-Related BehaviorPRENAVNCT07176195
The Impact of Eating Habits on the Health of Employees in the Defense Sector
An observational study of Health-Related Behavior, run by University of Primorska at 2 sites in Slovenia.
Trial summary
The PRENAV project focuses on healthy and sustainable eating among employees in the defense sector of the Republic of Slovenia. The project pursues two main objectives: 1. In a selected sample of employees in the defense sector, the project will determine their nutritional status and assess indicators of metabolic… Read more about this study
- Who is it for?
- Ages 18 to 65 yearsHealthy volunteers can take part
- Conditions the study is for
- Health-Related Behavior
- How many people
- 125 participants
- Where
- 2 sitesSlovenia
- Study dates
- 22 Sep 2025to 15 Jun 2026
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 65 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Study population: All participants will be adults, with an expected age range of 18-65 years, including both males and females, employed in the defense sector. Participants will include both military personnel and civilians.
Who may be able to join
- Adults employed at the Ministry of Defence or in the military.
- Asymptomatic individuals (i.e., without current acute illness or relevant health complaints).
- Willingness to provide informed consent to participate in the study.
- Willingness and ability to complete all questions in the Food Frequency Questionnaire (FFQ) and other study questionnaires.
Who cannot join
- Pregnant and breastfeeding women, as well as individuals with electronic implants such as a pacemaker, will be excluded.
Trial locations and contacts
2 sites in 1 country.
Slovenia2 sites
University of Primorska Faculty of Health Sciences
Izola, Municipality of Izola, 6310
University of Ljubljana Faculty of Social Sciences
Ljubljana, Ljubljana, 1000
About this study
The PRENAV project focuses on healthy and sustainable eating among employees in the defense sector of the Republic of Slovenia. The project pursues two main objectives:
- In a selected sample of employees in the defense sector, the project will determine their nutritional status and assess indicators of metabolic health, including serum concentration of vitamin D.
- In the selected sample, through a survey and qualitative methods (interviews, focus groups), we will identify the eating habits of employees in the defense sector, the factors influencing their dietary decisions, and the barriers and facilitators of healthy and sustainable eating among employees in the defense sector.
Based on these findings, we will prepare recommendations and an action plan to promote healthier and more sustainable eating among employees in the defense sector.
Read the detailed description
Participants will be selected using non-probability quota sampling, with quotas defined according to population characteristics, taking into account the research problem:
- Proportional representation based on the permanent composition of employees in the defense sector: soldiers, non-commissioned officers, officers, and military staff (military personnel 70%) and civilian employees (30%).
- Eating habits (canteens) during working hours: based on the number of employees at each military barracks (n=13) and at the Ministry of Defence.
- Gender structure of the observed population: military personnel 85% male and 15% female; civilian employees according to the gender distribution data of the civilian workforce.
- The purpose of this sampling strategy is to proportionally capture those characteristics of the military and civilian population employed in the defense sector that are crucial for the research objectives, namely: employment structure, gender distribution, and eating habits in canteens.
- Conditions
- Health-Related Behavior
- Medical subject headings
- Health Behavior
What is being measured
The primary outcome is the main question the study is designed to answer.
Food intake
Participants of the cross-sectional study will complete a Food Frequency Questionnaire (FFQ), adapted for the Slovenian population (Bizjak, Jenko Pražnikar \& Koroušić Seljak, 2014), with the aid of visual materials (portion size images). In the FFQ method, respondents answer questions about the frequency of consumption of specific foods over a certain period of time.
From a methodological perspective, most studies examining dietary habits and food/nutrient intake in military populations use the Food Frequency Questionnaire (FFQ), which is typically adapted to the general population of individual countries (Collins et al., 2021), rather than specifically tailored to the military population.
The questionnaire is based on self-reporting by study participants. It is an internationally established methodology for subjective assessment of nutrient intake, and the risk for participants is negligible.
Measured: From enrollment to the end of the November 2025
Secondary outcomes (2)
Body muscle mass (kg)
Body composition will be analyzed using the BodyStat1500 body analyzer. Bioelectrical impedance measurements will be conducted according to the standard protocol recommended by the European Society for Clinical Nutrition (Kyle et al., 2004). The protocol specifies that measurements should be taken on an empty stomach, with an emptied bladder, without physical activity or alcohol intake in the past 8 hours.
Participants will lie in a supine position for at least 5-10 minutes before the measurement, following the standard protocol (we will use 10 minutes in the supine position). Electrodes will be placed tetrapolarly on cleaned skin: on the right arm (from fingers to wrist) and the leg (instep to ankle). The distance between the two electrodes must be at least 5 centimeters. The participants' arms will be positioned at a 30-degree angle relative to the torso, and the legs spread at a 45-degree angle.
Measured: From enrollment to the end of November 2025
vitamin D (ng/ml)
Serum levels of vitamin D will be measured in biochemical laboratory of General Hospital of Izola, Slovenia.
Measured: From enrollment to the end of the November 2025
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted16 Sep 2025
- Study start22 Sep 2025
- Primary completion15 Nov 2025
- Study completion15 Jun 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Health-Related BehaviorStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Cross-sectional
- Enrolment
- 125 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Primorska
- Sponsor type
- University, hospital or other
- Collaborators
- University of Ljubljana, Faculty of Social Sciences, Ministry of Defence, Slovenia
- Responsible party
- Principal investigator, Zala Jenko Praznikar, University of Primorska
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07176195
- Sponsor's protocol ID
- PRENAV
- Acronym
- PRENAV
- Status last verified
- Dec 2025
- First submitted
- 8 Sep 2025
- Last updated
- 5 Dec 2025
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 5 Dec 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Impact of Eating Habits on the Health of Employees in the Defense Sector
- ClinicalTrials.gov ID
- NCT07176195
- Acronym / sponsor ID
- PRENAV / PRENAV
- Conditions
- Health-Related Behavior
- Study type
- Observational
- Recruitment status
- Active, not recruiting
- Enrolment
- 125 participants (actual)
- Lead sponsor
- University of PrimorskaUniversity, hospital or other
- Collaborators
- University of Ljubljana, Faculty of Social Sciences, Ministry of Defence, Slovenia
- Study start
- 22 Sep 2025 (actual)
- Primary completion
- 15 Nov 2025 (actual)
- Study completion
- 15 Jun 2026 (estimated)
- First posted
- 16 Sep 2025 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The PRENAV project focuses on healthy and sustainable eating among employees in the defense sector of the Republic of Slovenia. The project pursues two main objectives:
- In a selected sample of employees in the defense sector, the project will determine their nutritional status and assess indicators of metabolic health, including serum concentration of vitamin D.
- In the selected sample, through a survey and qualitative methods (interviews, focus groups), we will identify the eating habits of employees in the defense sector, the factors influencing their dietary decisions, and the barriers and facilitators of healthy and sustainable eating among employees in the defense sector.
Based on these findings, we will prepare recommendations and an action plan to promote healthier and more sustainable eating among employees in the defense sector.
Detailed description
Participants will be selected using non-probability quota sampling, with quotas defined according to population characteristics, taking into account the research problem:
- Proportional representation based on the permanent composition of employees in the defense sector: soldiers, non-commissioned officers, officers, and military staff (military personnel 70%) and civilian employees (30%).
- Eating habits (canteens) during working hours: based on the number of employees at each military barracks (n=13) and at the Ministry of Defence.
- Gender structure of the observed population: military personnel 85% male and 15% female; civilian employees according to the gender distribution data of the civilian workforce.
- The purpose of this sampling strategy is to proportionally capture those characteristics of the military and civilian population employed in the defense sector that are crucial for the research objectives, namely: employment structure, gender distribution, and eating habits in canteens.
Study design
- Observational model
- Cohort
- Time perspective
- Cross-sectional
Who may qualify
- Ages
- 18 to 65 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
- Study population
- All participants will be adults, with an expected age range of 18-65 years, including both males and females, employed in the defense sector. Participants will include both military personnel and civilians.
Key inclusion criteria (4 listed)
- Adults employed at the Ministry of Defence or in the military.
- Asymptomatic individuals (i.e., without current acute illness or relevant health complaints).
- Willingness to provide informed consent to participate in the study.
- Willingness and ability to complete all questions in the Food Frequency Questionnaire (FFQ) and other study questionnaires.
Key exclusion criteria (1 listed)
- Pregnant and breastfeeding women, as well as individuals with electronic implants such as a pacemaker, will be excluded.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Food intake
Time frame: From enrollment to the end of the November 2025
Participants of the cross-sectional study will complete a Food Frequency Questionnaire (FFQ), adapted for the Slovenian population (Bizjak, Jenko Pražnikar \& Koroušić Seljak, 2014), with the aid of visual materials (portion size images). In the FFQ method, respondents answer questions about the frequency of consumption of specific foods over a certain period of time. From a methodological perspective, most studies examining dietary habits and food/nutrient intake in military populations use the Food Frequency Questionnaire (FFQ), which is typically adapted to the general population of individual countries (Collins et al., 2021), rather than specifically tailored to the military population. The questionnaire is based on self-reporting by study participants. It is an internationally established methodology for subjective assessment of nutrient intake, and the risk for participants is negligible.
2 secondary outcomes
Body muscle mass (kg)
Time frame: From enrollment to the end of November 2025
vitamin D (ng/ml)
Time frame: From enrollment to the end of the November 2025
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 5 Dec 2025.
Related trials for Health-Related Behavior
Not yet recruitingObservational study
Validation of the Healthcare Relationship Assessment Scale (ERA) in Health Sciences Students.
Health Adult Subjects, Communication
Recruiting
Trial Phase: Syndemic Adapted Medly Uganda
Mental Health
Not yet recruiting
Feasibility of a Web-based Single-session Intervention Combined With Ecological Momentary Assessment and Intervention for Patients With Complex Posttraumatic Stress Disorder Awaiting Inpatient Treatment
PTSD - Post Traumatic Stress Disorder, Depression
Not yet recruiting
Deaf CBT-TS to Reduce Suicide Risk
Depression - Major Depressive Disorder, Anxiety
RecruitingObservational study
Brain Function and Psychological Changes Related to Cell Therapy for Autoimmune Hemolytic Anemia
CAR T-cell Therapy, Autoimmune Hemolytic Anemia
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
2 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Health-Related Behavior, run by University of Primorska at 2 sites in Slovenia.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: under way, not looking for participants, as of the sponsor's last update on 5 Dec 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 2 sites in Slovenia. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Food intake (time frame: From enrollment to the end of the November 2025). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 5 Dec 2025.