Overweight or obesity Nutritional, Metabolic, Endocrine
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Adults aged 30–59 years 2. Permanent residents of Phnom Penh, Cambodia 3. BMI =25 kg/m² 4. Not pregnant and not within 6 months postpartum 5. No known conditions limiting physical activity 6. Own a smartphone with internet access and be able to use Telegram 7. Able to read and write Khmer 8. Not participating in other weight-loss programs, not using weight-loss medications, and no plan for bariatric surgery during the study period 9. Willing to accept random group assignment, provide written informed consent, and comply with study procedures
Exclusion criteria
Exclusion criteria: 1. Pregnancy/postpartum: women who are currently pregnant or within 6 months postpartum 2. Physical limitations: individuals with known medical conditions that limit their ability to perform physical activity 3. Concurrent weight management: participation in other weight loss programs during the study period 4. Pharmacological intervention: current use of weight-loss medications 5. Surgical intervention: plans for bariatric surgery during the 12-week study period
Design outcomes
Secondary
| Measure | Time frame |
|---|---|
| 1. Systolic and diastolic blood pressure are measured using a digital sphygmomanometer (A&D Medical, Tokyo, Japan) after at least 5 minutes of seated rest at baseline and 12 weeks. 2. Fasting plasma glucose is measured using an automated chemistry analyser (BK-200, Biobase, China) from venous blood samples collected after an overnight fast of at least 8 hours at baseline and 12 weeks. 3. HbA1c is measured using a fully automated glycated haemoglobin analyser (BK-HbA1c, Biobase, China) at baseline and 12 weeks. 4. Lipid profile parameters (triglycerides, TC, LDL, and HDL) are measured using an automated chemistry analyser (BK-200, Biobase, China) at baseline and 12 weeks. 5. Physical activity adherence is measured using the physical activity subscale of the Health-Promoting Lifestyle Profile II (HPLP-II), consisting of six items scored on a 4-point scale, at baseline and 12 weeks. 6. Healthy eating adherence is measured using the healthy eating subscale of the Health-Promoting Lifestyle Profile II (HPLP-II), consisting of nine items scored on a 4-point scale, at baseline and 12 weeks. 7. General self-efficacy is measured using the New General Self-Efficacy Scale, comprising eight items scored on a 4-point Likert scale, at baseline and 12 weeks. 8. Healthy eating self-efficacy is measured using the Eating Self-Efficacy Brief Scale, consisting of eight items scored on a 6-point Likert scale, at baseline and 12 weeks. 9. Exercise self-efficacy is measured using the Self-Efficacy for Exercise Scale, consisting of nine items scored on a 10-point Likert scale, at baseline and 12 weeks. 10. Health-related quality of life (HRQoL) is measured using the 12-Item Short Form Health Survey (SF-12), with Physical Component Summary (PCS) and Mental Component Summary (MCS) scores calculated at baseline and 12 weeks. | — |
Countries
Cambodia