Obesity (BMI>30)NCT07603141
Workplace Intervention Including Exercise and Nutrition in Obese Office Workers
A study testing Workplace combined (exercise and nutrition) intervention in people with Obesity (BMI>30), run by University of Thessaly at 1 site in Greece.
Trial summary
The main objective of this study is to investigate the efficacy of a 6-month workplace combined (exercise and nutrition) intervention in obese office workers, using a randomized controlled study. An additional objective of this study is to evaluate the individual responses per participant following the program. Read more about this study
- Who is it for?
- Any age
- Conditions the study is for
- Obesity (BMI>30)
- What is being tested?
- Workplace combined (exercise and nutrition) intervention
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 36 participants
- Where
- 1 siteGreece
- Study dates
- 30 Jun 2023to 28 Feb 2024
- Phase
- Interventional
- Are there results?
- None posted in the registry
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 Any age
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Who may be able to join
- Sedentary work at least 8 h per day in the office
- BMI value ≥ 30 kg/m2
- No chronic diseases (physical or mental)
- No use of any medication
- No injuries (in lower or upper body) in the last 6 months
- No participation in organized exercise programs or nutrition intervention during the last 6 months.
- Exclusion Criteria: Participants who do not meet the above criteria will be excluded from the study.
Who cannot join
None listed.
Trial locations and contacts
1 site in 1 country.
Greece1 site
Department of Physical Education and Sports Science, University of Thessaly
Trikala, Greece, 42100
About this study
Official title: A Combined Workplace Intervention Including Exercise and Nutrition for Health Promotion in Obese Office Workers: a Randomized Controlled Study
The main objective of this study is to investigate the efficacy of a 6-month workplace combined (exercise and nutrition) intervention in obese office workers, using a randomized controlled study. An additional objective of this study is to evaluate the individual responses per participant following the program.
- Conditions
- Obesity (BMI>30)
- Being tested
- Workplace combined (exercise and nutrition) intervention
- Keywords
- occupational setting, wellness, physical activity, functional capacity, dietary habits, hydration
- Medical subject headings
- Obesity, Motor Activity, Feeding Behavior
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Workplace combined (exercise and nutrition) interventionOther
The IG will participate in a supervised 6-month combined intervention program (exercise and nutrition), which will take place inside the workplace settings during working hours. In more detail, the IG will participate, every working day (5 days/week), in a 6-month supervised combined chair-based exercise program (120 training sessions; 25-40 min/day), including chair based seated and chair-assisted standing exercises to improve flexibility, balance, strength and aerobic capacity. Except exercise, the intervention program consisted of weekly counseling and educational activities in healthy diet and proper hydration using presentations, leaflets, individual and group sessions with nutritionist, use of applications for proper hydration, use of goal-setting cards for healthy options
| Study group | Role | What they receive |
|---|---|---|
| Intervention group | Experimental | The IG will participate in a daily supervised 6-month workplace program (during working hours) including: a. exercise (flexibility, balance, strength, aerobic), and b. counseling and educational activities for healthy diet and hydration. Receives: Other: Workplace combined (exercise and nutrition) intervention |
| Control group | No intervention | The CG did not participate in any intervention. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Body fat
Body fat (BF): BF% will be assessed using the bioelectrical impedance method (Maltron 900).
Measured: Baseline and 6 months
Body circumferences
The waist and hip circumferences will be measured using an ergonomic circumference measuring tape (Seca 201).
Measured: Baseline and 6 months
Blood pressure
Systolic and diastolic blood pressure will be measured, using an electronic upper arm blood pressure monitor (A\&D-UA-851).
Measured: Baseline and 6 months
Respiratory function
Forced vital capacity (FVC) and forced expiratory volume in 1 s (FEV1) will be measured, using a portable spirometer (Micro, Medical, Micro).
Measured: Baseline and 6 months
Lipidemic profile
A blood sample will be obtained after overnight fasting (12 h), as previously described [37]. Total cholesterol, high-density lipoprotein (HDL) and triglycerides will be determined using a biochemical analyzer (Clinical Chemistry Analyzer Z 1145; Zafiropoulos Diagnostica S.A., Koropi, Greece), and low-density lipoprotein (LDL) will be calculated using the Friedewald equation.
Measured: Baseline and 6 months
Lower body flexibility:
The sit-and-reach test will be performed using a Flex-Tester box (Novel Products Inc., Rockton, IL, USA).
Measured: Baseline and 6 months
Static balance
The single-limb stance test (with eyes opened) was performed, as previously described by Rinne et al.
Measured: Baseline and 6 months
Dynamic balance:
The timed up-and-go test was performed, as previously described by Rikli and Jones.
Measured: Baseline and 6 months
Handgrip strength
Maximal isometric handgrip strength will be assessed using a portable hydraulic dynamometer (Jamar 5030J1, Horsham, USA).
Measured: Baseline and 6 months
Aerobic capacity:
The YMCA 3 min step test was used, which will be performed following the metronome cadence (96 beats per minute; 4 steps per cycle). The participants' HR will be measured 1 min following the termination of the step test.
Measured: Baseline and 6 months
Adherence to the Mediterranean diet
The adherence to the Mediterranean diet will be assessed before and after the 6-month period using the specific Mediterranean Diet Score (range of total score: 0-55) [34-35]. The MedDietScore measures the weekly consumption of the following 9 food groups: non-refined cereals (whole grain bread and pasta, brown rice, etc), fruit, vegetables, legumes, potatoes, fish, red meat and products, poultry, full fat dairy products (like cheese, yoghurt, milk), as well as olive oil and alcohol intake [35].
Measured: Baseline and 6 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted22 May 2026
- Study start30 Jun 2023
- Primary completion30 Jul 2023
- Study completion28 Feb 2024
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Obesity (BMI>30)Studies of the same condition, open and under way.
- More trials run by University of ThessalyThe sponsor's other registered studies.
- 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
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Investigator
- Enrolment
- 36 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Thessaly
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Konstantina Karatrantou, University of Thessaly
- Investigators
- Konstantina Karatrantou, Principal investigator, University of ThessalyVassilis Gerodimos, Principal investigator, University of Thessaly
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07603141
- Sponsor's protocol ID
- 1760
- Status last verified
- May 2026
- First submitted
- 11 May 2026
- Last updated
- 28 May 2026
- 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 28 May 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Combined Workplace Intervention Including Exercise and Nutrition for Health Promotion in Obese Office Workers: a Randomized Controlled Study
- ClinicalTrials.gov ID
- NCT07603141
- Acronym / sponsor ID
- 1760
- Conditions
- Obesity (BMI>30)
- Keywords
- occupational setting, wellness, physical activity, functional capacity, dietary habits, hydration
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 36 participants (actual)
- Lead sponsor
- University of ThessalyUniversity, hospital or other
- Study start
- 30 Jun 2023 (actual)
- Primary completion
- 30 Jul 2023 (actual)
- Study completion
- 28 Feb 2024 (actual)
- First posted
- 22 May 2026 (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 main objective of this study is to investigate the efficacy of a 6-month workplace combined (exercise and nutrition) intervention in obese office workers, using a randomized controlled study. An additional objective of this study is to evaluate the individual responses per participant following the program.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (investigator)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Intervention group | Experimental | Other: Workplace combined (exercise and nutrition) interventionThe IG will participate in a daily supervised 6-month workplace program (during working hours) including: a. exercise (flexibility, balance, strength, aerobic), and b. counseling and educational activities for healthy diet and hydration. |
| Control group | No intervention | –The CG did not participate in any intervention. |
Who may qualify
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (7 listed)
- Sedentary work at least 8 h per day in the office
- BMI value ≥ 30 kg/m2
- No chronic diseases (physical or mental)
- No use of any medication
- No injuries (in lower or upper body) in the last 6 months
Key exclusion criteria (0 listed)
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Workplace combined (exercise and nutrition) interventionThe IG will participate in a supervised 6-month combined intervention program (exercise and nutrition), which will take place inside the workplace settings during working hours. In more detail, the IG will participate, every working day (5 days/week), in a 6-month supervised combined chair-based exercise program (120 training sessions; 25-40 min/day), including chair based seated and chair-assisted standing exercises to improve flexibility, balance, strength and aerobic capacity. Except exercise, the intervention program consisted of weekly counseling and educational activities in healthy diet and proper hydration using presentations, leaflets, individual and group sessions with nutritionist, use of applications for proper hydration, use of goal-setting cards for healthy options | Other | Intervention group |
Primary outcome
Body fat
Time frame: Baseline and 6 months
Body fat (BF): BF% will be assessed using the bioelectrical impedance method (Maltron 900).
Body circumferences
Time frame: Baseline and 6 months
The waist and hip circumferences will be measured using an ergonomic circumference measuring tape (Seca 201).
Blood pressure
Time frame: Baseline and 6 months
Systolic and diastolic blood pressure will be measured, using an electronic upper arm blood pressure monitor (A\&D-UA-851).
Respiratory function
Time frame: Baseline and 6 months
Forced vital capacity (FVC) and forced expiratory volume in 1 s (FEV1) will be measured, using a portable spirometer (Micro, Medical, Micro).
Lipidemic profile
Time frame: Baseline and 6 months
A blood sample will be obtained after overnight fasting (12 h), as previously described [37]. Total cholesterol, high-density lipoprotein (HDL) and triglycerides will be determined using a biochemical analyzer (Clinical Chemistry Analyzer Z 1145; Zafiropoulos Diagnostica S.A., Koropi, Greece), and low-density lipoprotein (LDL) will be calculated using the Friedewald equation.
Lower body flexibility:
Time frame: Baseline and 6 months
The sit-and-reach test will be performed using a Flex-Tester box (Novel Products Inc., Rockton, IL, USA).
Static balance
Time frame: Baseline and 6 months
The single-limb stance test (with eyes opened) was performed, as previously described by Rinne et al.
Dynamic balance:
Time frame: Baseline and 6 months
The timed up-and-go test was performed, as previously described by Rikli and Jones.
Handgrip strength
Time frame: Baseline and 6 months
Maximal isometric handgrip strength will be assessed using a portable hydraulic dynamometer (Jamar 5030J1, Horsham, USA).
Aerobic capacity:
Time frame: Baseline and 6 months
The YMCA 3 min step test was used, which will be performed following the metronome cadence (96 beats per minute; 4 steps per cycle). The participants' HR will be measured 1 min following the termination of the step test.
Adherence to the Mediterranean diet
Time frame: Baseline and 6 months
The adherence to the Mediterranean diet will be assessed before and after the 6-month period using the specific Mediterranean Diet Score (range of total score: 0-55) [34-35]. The MedDietScore measures the weekly consumption of the following 9 food groups: non-refined cereals (whole grain bread and pasta, brown rice, etc), fruit, vegetables, legumes, potatoes, fish, red meat and products, poultry, full fat dairy products (like cheese, yoghurt, milk), as well as olive oil and alcohol intake [35].
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 28 May 2026.
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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.
Konstantina Karatrantou principal investigator
University of Thessaly
Vassilis Gerodimos principal investigator
University of Thessaly
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Workplace combined (exercise and nutrition) intervention in people with Obesity (BMI>30), run by University of Thessaly at 1 site in Greece.
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 7 inclusion and 0 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: finished, as of the sponsor's last update on 28 May 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Greece. 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?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
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?
Body fat (time frame: Baseline and 6 months). The study lists 11 primary outcomes in all. 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 28 May 2026; AzTrials last refreshed its copy on 6 Nov 2026.