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This study aims to analyze the effects of a 3-month self-applied online program, focused on promoting healthy lifestyle habits (healthy eating and increased physical activity), on adults with obesity. Participants will be recruited by 8 doctors from 6 public Health Centers. These patients will be randomized allocated into two interventional groups: the experimental group will receive audiovisual instructions from their specialist doctor, and the control group from a doctor outside the patient. Assessment will include sociodemographic variables, body mass index, blood pressure, glycemic and lipid metabolism variables, physical activity level, adherence to the Mediterranean diet, therapeutic alliance, and health-related quality of life. The randomization process will be stratified according to BMI, therapeutic alliance, age, and sex.
Obesity or being overweight, even other associated comorbidities, involve a worrying public health problem. The evidence shows that healthy eating and regular physical exercise, monitored by different means (internet, face to face, exercise diaries), play an important prevention role to maintain health while ageing. In this way, Information and Communication Technologies (ICTs) have been demonstrated as a useful tool to promote health, working on barriers at the same time, such as low motivation and difficulties maintaining regular exercise and/or healthy eating habits. ICTs also allows to reach a wider audience at a lower cost, due to their good cost-benefit relationship and the possibility of increasing the efficiency of interventions. Therefore, this study aims to analyze the effects of a 3-month self-applied online program, focused on promoting healthy lifestyle habits (healthy eating and increased physical activity), on adults with obesity. Participants will be recruited by 8 doctors from 6 public Health Centers. These patients will be randomized allocated into two interventional groups: the experimental group will receive audiovisual instructions from their specialist doctor, and the control group from a doctor outside the patient. Assessment will include sociodemographic variables, body mass index, blood pressure, glycemic and lipid metabolism variables, physical activity level, adherence to the Mediterranean diet, therapeutic alliance, and health-related quality of life. The randomization process will be stratified according to BMI, therapeutic alliance, age, and sex.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Own Doctor Group | Experimental | The experimental group will receive access to audiovisual instructions (exercise and nutritional education) given by their specialist doctor. |
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| Unknown Doctor Group | Active Comparator | The control group will receive access to audiovisual instructions (exercise and nutritional education) given by an unknown doctor. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Own Doctor Education | Other | The self-applied online program will comprise a 3-month behavioural intervention seeking to develop gradually achieving the goals of changing eating and physical activity habits, supported by audiovisual instructions. This group will receive access to the internet-based lifestyle intervention (exercise and nutritional education), supported by audiovisual instructions given by their specialist doctor. |
| Measure | Description | Time Frame |
|---|---|---|
| Body Mass Index | Body Mass Index (BMI) is a measure of body weight relative to height, calculated by dividing a person's weight in kilograms by the square of their height in meters. | Baseline (pre-intervention) and immediately post-intervention (3 months). |
| Measure | Description | Time Frame |
|---|---|---|
| Blood Pressure | Blood Pressure (BP) is the force exerted by circulating blood on the walls of the arteries. It is measured in millimeters of mercury (mmHg) and recorded as two values: systolic pressure (the pressure during heart contraction) over diastolic pressure (the pressure during heart relaxation). | Baseline (pre-intervention) and immediately post-intervention (3 months). |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Juan Fco. Lisón | Valencia | Valencia-valència | 46006 | Spain |
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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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| Unknown Doctor Education | Other | The self-applied online program will comprise a 3-month behavioural intervention seeking to develop gradually achieving the goals of changing eating and physical activity habits, supported by audiovisual instructions. This group will receive the same intervention, but in this case supported by audiovisual instructions given by a doctor outside the patient. |
|
| Physical Activity Level | Levels of Physical Activity will be assessed using the Short International Physical Activity Questionnaire (Short-IPAQ). This tool evaluates the frequency, duration, and intensity of physical activity, as well as sedentary behavior, in daily life. It estimates total physical activity in MET-min/week and records time spent sitting, providing a standardized measure of physical activity levels. | Baseline (pre-intervention) and immediately post-intervention (3 months). |
| Adherence to the Mediterranean diet | Adherence to the Mediterranean Diet will be assessed using the MEDAS (Mediterranean Diet Adherence Screener) from the PREDIMED study. This 14-item questionnaire evaluates adherence based on 12 questions about food consumption frequency and 2 questions on dietary habits associated with the Mediterranean diet. Each item is scored 0 or 1 point, with a total possible score ranging from 0 to 14 points. Higher scores indicate greater adherence. | Baseline (pre-intervention) and immediately post-intervention (3 months). |
| Therapeutic Alliance | Therapeutic Alliance will be assessed using the Working Alliance Inventory (WAI) questionnaire. This tool evaluates the relationship between a patient and their therapist across three key dimensions: (1) therapeutic goals, (2) tasks, and (3) therapeutic bond. Each item is scored on a Likert scale, with a total possible score ranging from low to high alliance strength. Higher scores indicate a stronger therapeutic alliance, which is associated with better treatment outcomes. | Baseline (pre-intervention) and immediately post-intervention (3 months). |
| Health-related Quality of Life | Health-Related Quality of Life (HRQoL) will be assessed using the EuroQol-5D (EQ-5D) questionnaire. This tool evaluates five dimensions of health: mobility, self-care, usual activities, pain/discomfort, and anxiety/depression, each rated on a multi-level scale. A health index score will be generated based on these dimensions. The visual analog scale (VAS) will not be used in this study. | Baseline (pre-intervention) and immediately post-intervention (3 months). |
| D001835 |
| Body Weight |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D001519 | Behavior |
| D001522 | Behavior, Animal |