Mediterranean Diet Education in Shift Nurses: Effects on Sleep, Activity, and Health Parameters

NCT07123610 | Completed

• 1 other identifier: E-85646034-604.01-81176
• Study Type: interventional
• Target: 130
• Locations: 1 country
• Sites: 1

Brief Summary

This study aimed to evaluate the effects of Mediterranean diet education on sleep quality, physical activity levels, blood parameters, and anthropometric measurements among shift-working nurses. Primary outcomes: Change in Mediterranean diet adherence and sleep quality scores from baseline to post-intervention. Secondary outcomes: Changes in physical activity levels, anthropometric indices (e.g., BMI, waist-to-hip ratio), and blood parameters (fasting glucose, insulin, HOMA-IR, lipid profile).

Conditions

Cardiovascular Diseases; Obesity Prevention; Atheroscleroses; Hypertension; Type 2 Diabetes Mellitus (T2DM); Occupational Health; Metabolic Syndrome

Keywords

Nutritional intervention; Circadian rhythm; Metabolic health; Lifestyle modification; Workplace wellness

Outcome Measures

Primary Outcomes (1)

• MEDAS Score

  Change in Mediterranean Diet Adherence Score (MEDAS) Change in adherence to the Mediterranean diet as measured by the 14-item Mediterranean Diet Adherence Screener (MEDAS). This validated questionnaire assesses the frequency and quality of consumption of key Mediterranean dietary components. Scores range from 0 to 14, with higher scores indicating greater adherence.

  Baseline (week 0) and post-intervention (week 8)

Secondary Outcomes (5)

• Change in Physical Activity

  Baseline (week 0), Postintervention (week 8)

• BMI Change

  Baseline (Week 0) and Post-Intervention (Week 8)

• Sleep Quality

  baseline (week 0) postintervention (week 8)

• Waist Hip Ratio

  Baseline (Week 0) and Post-Intervention (Week 8)

• Change in Blood Results Profile

  Baseline (Week 0) and Post-Intervention (Week 8)

Study Arms (1)

Shift working nurses

EXPERIMENTAL

Behavioral: Mediterranean Diet Education Program

Interventions

Mediterranean Diet Education Program BEHAVIORAL

The intervention consists of a 4-week Mediterranean Diet Education Program designed specifically for nurses working rotating shifts. The program included four weekly group sessions, each lasting approximately 60 minutes, delivered in-person by a registered dietitian with training in behavioral change and clinical nutrition. Sessions are interactive and supported by visual and printed educational materials. Participants receive a printed handbook including a food pyramid graphic, portion guides, weekly shopping lists, and sample menus tailored to shift work schedules. They also gain access to a moderated online discussion group and receive weekly motivational text messages to reinforce key messages. No food is provided directly.

Shift working nurses

Eligibility Criteria

• Age: 18 Years - 55 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Registered nurse working ≥3 rotating shifts per month at the study hospital
• Age 18-55 years
• Written informed consent

You may not qualify if:

• Pregnancy or lactation
• Current participation in another lifestyle or drug trial
• Diagnosed sleep disorder requiring pharmacotherapy
• Medical condition necessitating therapeutic diet incompatible with MedDiet principles
• Inability to attend ≥75 % of education session

Sponsors & Collaborators

• Bahçeşehir University: lead

Study Sites (1)

Bodrum Acıbadem Hospital

Muğla, Bodrum, Turkey (Türkiye)

Location

Related Publications (2)

• Sun M, Feng W, Wang F, Li P, Li Z, Li M, Tse G, Vlaanderen J, Vermeulen R, Tse LA. Meta-analysis on shift work and risks of specific obesity types. Obes Rev. 2018 Jan;19(1):28-40. doi: 10.1111/obr.12621. Epub 2017 Oct 4.

  PMID: 28975706 BACKGROUND

• Franzago M, Alessandrelli E, Notarangelo S, Stuppia L, Vitacolonna E. Chrono-Nutrition: Circadian Rhythm and Personalized Nutrition. Int J Mol Sci. 2023 Jan 29;24(3):2571. doi: 10.3390/ijms24032571.

  PMID: 36768893 BACKGROUND

MeSH Terms

Conditions

Cardiovascular Diseases; Atherosclerosis; Hypertension; Diabetes Mellitus, Type 2; Metabolic Syndrome

Condition Hierarchy (Ancestors)

Arteriosclerosis; Arterial Occlusive Diseases; Vascular Diseases; Diabetes Mellitus; Glucose Metabolism Disorders; Metabolic Diseases; Nutritional and Metabolic Diseases; Endocrine System Diseases; Insulin Resistance; Hyperinsulinism

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NA
• Masking: NONE
• Purpose: SCREENING
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Assist. Prof.

Study Record Dates

• First Submitted: July 31, 2025
• First Posted: August 14, 2025
• Study Start: May 8, 2024
• Primary Completion: November 9, 2024
• Study Completion: November 9, 2024
• Last Updated: August 14, 2025

Record last verified: 2025-08

Data Sharing

• IPD Sharing: Will not share

Locations

TU (1)