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This study investigates the effects of a postbiotic combination called ABB C3 on reducing body fat and improving metabolic health in children and teenagers. The study consists of a 3-month trial with half participants taking ABB C3 and the other half a placebo, monitoring body composition and blood markers. Afterward, participants can continue with ABB C3 for an additional 3 months. The goal is to determine if ABB C3 is a safe and effective way to help young people improve their health by reducing body fat.
The study focuses on evaluating the effects of a combination of postbiotics called ABB C3 in reducing body fat and improving glucose metabolism. The study proposes a randomized, double-blind clinical trial with participants (aged 8-18 years) randomized into the ABB C3 supplement group or a placebo group. Over a period of 3 months, body composition and relevant blood parameters will be monitored (Study Phase). Subsequently, all participants will be offered to continue with the ABB C3 supplement for an additional 3 months, constituting the Follow-up Phase. The study protocol includes collecting data on possible adverse events. Blood samples and DXA scans will be performed to assess changes in body composition and metabolic health parameters. In summary, the study aims to determine the efficacy and safety of the ABB C3 postbiotic in helping reduce body fat and improve metabolic profiles in children and adolescents.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Active control | Placebo Comparator | Participants in this arm will receive the usual treatment for obesity at our hospital, based on lifestyle changes (encouraging a healthy diet and physical activity) for 3 months. Participants will receive a daily dose of placebo for these 3 months, then given the option to receive a daily dose of probiotic ABB C3 for 3 more months. |
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| Treatment | Experimental | Participants in this arm will receive the usual treatment for obesity at our hospital, based on lifestyle changes (encouraging a healthy diet and physical activity) for 3 months. Participants will receive a daily dose of postbiotic blend (ABB C3) for these 3 months, then given the option to receive a daily dose of probiotic ABB C3 for 3 more months. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Postbiotic ABB C3 | Dietary Supplement | A daily dose of 550 mg of the postbiotic blend ABB C3 in individual sachets for the first 3 months of the study. |
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| Measure | Description | Time Frame |
|---|---|---|
| Incidence of Adverse Events | Treatment safety and tolerability will be evaluated by assessing differences in the incidence of potential adverse events between groups, focusing on gastrointestinal symptoms. | Baseline, 1.5 months, 3 months |
| Change in adiposity (% fat body mass) | Fat body mass (adiposity) will be assessed by dual energy x-ray absorptiometry (DXA) scan at baseline and 3 months and differences will be assessed | 3 months |
| Change in blood glycated hemoglobin (HbA1c) levels | Blood tests will be performed at baseline and 3 months and HbA1c (%) levels quantified. | 3 months |
| Measure | Description | Time Frame |
|---|---|---|
| Change in adiposity (% fat body mass) | Fat body mass (adiposity) will be assessed by dual energy x-ray absorptiometry (DXA) scan at baseline and 6 months and differences will be assessed. | Baseline, 6 months |
| Change in blood glycated hemoglobin (HbA1c) levels |
| Measure | Description | Time Frame |
|---|---|---|
| Change in gut microbial abundance and diversity | DNA will be isolated from fecal samples and analyzed by deep-sequencing to determine the composition, abundance, and diversity of gut microbiota. | Baseline, 3 months, 6 months |
| Change in plasma metabolite concentrations |
Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Carles Lerin, PhD | Fundació Sant Joan de Deu | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Hospital Sant Joan de Déu | Barcelona | Barcelona | 08950 | Spain |
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| ID | Term |
|---|---|
| D063766 | Pediatric Obesity |
| D009765 | Obesity |
| ID | Term |
|---|---|
| D050177 | Overweight |
| D044343 | Overnutrition |
| D009748 | Nutrition Disorders |
| D009750 | Nutritional and Metabolic Diseases |
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Randomized double-blind placebo-controlled study with a treatment group and an active control parallel group.
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| Placebo | Dietary Supplement | A daily dose of 550 mg of the placebo in individual sachets for the first 3 months of the study. |
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| Follow-up Postbiotic ABB C3 (Optional) | Dietary Supplement | Option given to all participants: a daily dose of 550 mg of the postbiotic blend ABB C3 in individual sachets for months 4 to 6 of the study. |
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Blood tests will be performed at baseline and 6 months and HbA1c (%) levels quantified. Differences between time-points will be assessed. |
| Baseline, 6 months |
| Change in BMI z-score | Weight and height will be combined to calculate changes in BMI and BMI z scores and differences between time-points will be assessed. | Baseline, 1.5 months, 3 months, 6 months |
| Change in body composition | Body composition (lean and fat mass) will be estimated by bioimpedance and differences between time-points will be assessed. | Baseline, 1.5 months, 3 months, 6 months |
| Change in insulin sensitivity | Fasting blood glucose and insulin concentrations will be combined to calculate HOMA-IR (Homeostatic Model Assessment for Insulin Resistance) and differences between time-points will be assessed | Baseline, 3 months, 6 months |
| Change in lipid profile (triglycerides, cholesterol) | The lipid profile will be determined by blood test and differences between time-points will be assessed | Baseline, 3 months, 6 months |
| Change in blood pressure | Both systolic and diastolic blood pressure will be measured at each visit and differences between time-points will be assessed | Baseline, 3 months, 6 months |
| Change in Beck Depression Inventory-II (BDI-2) | The Beck Depression Inventory for Youth (BDI-2) assesses negative thoughts of children or adolescents about themselves, their life, and their future, along with feelings of sadness and physiological signs of depression. It is a 20-item questionnaire with a score range of 0-60. Higher scores indicate worse outcome. | Baseline, 3 months, 6 months |
| Change in Beck Anxiety Inventory-II (BAI-2) | The Beck Anxiety Inventory for Youth (BAI-2) assesses the fears and concerns of children or adolescents, as well as physical symptoms associated with anxiety. It is a 20-item questionnaire with a score range of 0-60. Higher scores indicate worse outcome. | Baseline, 3 months, 6 months |
Metabolite concentrations in plasma samples will be measured by liquid chromatography coupled to mass spectrometry (metabolomics). |
| Baseline, 3 months, 6 months |
| D001835 |
| Body Weight |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |