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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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| 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. |
|
| Control group | No Intervention | The CG did not participate in any intervention. |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Workplace combined (exercise and nutrition) intervention | Other | 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 |
| Measure | Description | Time Frame |
|---|---|---|
| Body fat | Body fat (BF): BF% will be assessed using the bioelectrical impedance method (Maltron 900). | Baseline and 6 months |
| Body circumferences | The waist and hip circumferences will be measured using an ergonomic circumference measuring tape (Seca 201). | 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). | 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). | 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. | 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). | Baseline and 6 months |
| Static balance |
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Inclusion Criteria:
Exclusion Criteria: Participants who do not meet the above criteria will be excluded from the study.
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| Name | Affiliation | Role |
|---|---|---|
| Konstantina Karatrantou | University of Thessaly | Principal Investigator |
| Vassilis Gerodimos | University of Thessaly | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Department of Physical Education and Sports Science, University of Thessaly | Trikala | Greece | 42100 | Greece |
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| Type | Includes Protocol | Includes SAP | Includes ICF | Document Label | Document Date | Document Uploaded Date | Document File Name |
|---|---|---|---|---|---|---|---|
| Prot_SAP_ICF | Yes | Yes | Yes | Study Protocol, Statistical Analysis Plan, and Informed Consent Form | May 16, 2026 | May 17, 2026 | Prot_SAP_ICF_000.pdf |
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| ID | Term |
|---|---|
| D009765 | Obesity |
| D009043 | Motor Activity |
| D005247 | Feeding Behavior |
| ID | Term |
|---|---|
| D050177 | Overweight |
| D044343 | Overnutrition |
| D009748 | Nutrition Disorders |
| D009750 | Nutritional and Metabolic Diseases |
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| ID | Term |
|---|---|
| D015444 | Exercise |
| D009752 | Nutritional Status |
| D008722 | Methods |
| ID | Term |
|---|---|
| D009043 | Motor Activity |
| D009068 | Movement |
| D009142 | Musculoskeletal Physiological Phenomena |
| D055687 | Musculoskeletal and Neural Physiological Phenomena |
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The single-limb stance test (with eyes opened) was performed, as previously described by Rinne et al.
| Baseline and 6 months |
| Dynamic balance: | The timed up-and-go test was performed, as previously described by Rikli and Jones. | Baseline and 6 months |
| Handgrip strength | Maximal isometric handgrip strength will be assessed using a portable hydraulic dynamometer (Jamar 5030J1, Horsham, USA). | 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. | 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]. | Baseline and 6 months |
| D001835 |
| Body Weight |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D001519 | Behavior |
| D001522 | Behavior, Animal |
| D009747 | Nutritional Physiological Phenomena |
| D000066888 | Diet, Food, and Nutrition |
| D010829 | Physiological Phenomena |
| D006304 | Health Status |
| D003710 | Demography |
| D011154 | Population Characteristics |
| D008919 | Investigative Techniques |