A study to assess workers' knowledge of the Mediterranean diet and physical activity and how this results in weight change in workers

Workplace health promotion: a randomized clinical trial to assess knowledge, attitudes and behaviors on Mediterranean diet and physical activity

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN18283628

Enrollment

256

Registered

2025-04-17

Start date

2025-01-21

Completion date

Unknown

Last updated

2025-04-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Knowledge improvement and weight reduction Nutritional, Metabolic, Endocrine

Interventions

This study will be a multicenter four-arm randomized controlled trial conducted among overweight and obese employees of Policlinico Umberto I and Sapienza University of Rome. Workers will be recruited

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Employee or equivalent staff of the Policlinico Umberto I or Sapienza University of Rome who undergoes the occupational medicine visit 2. Over 18 years old 3. Overweight or obese (BMI =25.00 kg/m2)

Exclusion criteria

Exclusion criteria: 1. Staff with nephrological pathologies under treatment 2. Staff who have undergone abdominal surgery in the last month 3. Staff with psychiatric pathologies under treatment 4. Staff with grade III obesity (BMI =40.00 kg/m2) 5. Staff who cannot follow a specific diet due to pathologies or problems expressed to the doctor during the occupational medicine visit

Design outcomes

Primary

Measure	Time frame
Knowledge of nutrition (Mediterranean diet) and physical activity measured using: 1. Questionnaire on adherence to the Mediterranean diet: this assesses the frequency of consumption of the various food groups (cereals, fruits, vegetables, meats, etc), time spent preparing and eating meals 2. Questionnaire on knowledge of the principles of the Mediterranean diet: consists of 15 closed questions with four answers of which only one was correct, structured by the experimenters related to the contents of 12 videos sent to participants on a weekly basis 3. IPAQ-SF (International Physical Activity Questionnaire - Short Form validated in Italian) with seven questions + three questions formulated by the researchers: the short version of the questionnaire in Italian is a translation of the English version of the IPAQ-SF. It includes seven items to assess the level of physical activity based on time (given in days and minutes per day) spent on vigorous and moderate intensity activities, time spent walking and sitting. The duration of the different activities is multiplied by the respective metabolic rates, expressed as MET (metabolic equivalent of activity) in order to obtain the energy expenditure at work and during leisure time; the final score allows the identification of three distinct categories: subject “inactive,” “sufficiently active,” and “active or very active.” Three questions formulated by the researchers assessing the type of physical activity performed and frequency, attitude to physical activity and the impact that, according to the participant, it has on various health conditions (diabetes, cancer, etc) were added to the questionnaire 4. Questionnaire on knowledge in the field of physical activity: a questionnaire of 15 closed questions with four answers of which only one was structured by the experimenters, related to the contents of eight information documents sent to participants biweekly Measured at T0, T1 and T2 as defined in the Interventions field	—

Measure

Time frame

Knowledge of nutrition (Mediterranean diet) and physical activity measured using: 1. Questionnaire on adherence to the Mediterranean diet: this assesses the frequency of consumption of the various food groups (cereals, fruits, vegetables, meats, etc), time spent preparing and eating meals 2. Questionnaire on knowledge of the principles of the Mediterranean diet: consists of 15 closed questions with four answers of which only one was correct, structured by the experimenters related to the contents of 12 videos sent to participants on a weekly basis 3. IPAQ-SF (International Physical Activity Questionnaire - Short Form validated in Italian) with seven questions + three questions formulated by the researchers: the short version of the questionnaire in Italian is a translation of the English version of the IPAQ-SF. It includes seven items to assess the level of physical activity based on time (given in days and minutes per day) spent on vigorous and moderate intensity activities, time spent walking and sitting. The duration of the different activities is multiplied by the respective metabolic rates, expressed as MET (metabolic equivalent of activity) in order to obtain the energy expenditure at work and during leisure time; the final score allows the identification of three distinct categories: subject “inactive,” “sufficiently active,” and “active or very active.” Three questions formulated by the researchers assessing the type of physical activity performed and frequency, attitude to physical activity and the impact that, according to the participant, it has on various health conditions (diabetes, cancer, etc) were added to the questionnaire 4. Questionnaire on knowledge in the field of physical activity: a questionnaire of 15 closed questions with four answers of which only one was structured by the experimenters, related to the contents of eight information documents sent to participants biweekly Measured at T0, T1 and T2 as defined in the Interventions field

—

Secondary

Measure	Time frame
Body mass index (BMI) obtained from the ratio of body weight (kg) to height expressed in meters squared (kg weight/height in m2) measured at T0, T1 and T2 as defined in the Interventions field	—

Countries

Italy

Contacts

Public ContactGiuseppe La Torre

giuseppe.latorre@uniroma1.it+39 (0)3383878031

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026