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| Name | Class |
|---|---|
| Ankara University | OTHER |
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Prebiotics and probiotics are thought to play a role in appetite control and body weight regulation; but little is known about this topic. This study was planned to examine the effects of inulin and Lactobacillus casei 431 on short and long term fasting, satiety, dietary intake, and serum hunger and satiety hormone levels. The study consisted of 2 phases. In the first phase, a double-blind, randomized, crossover study design was used, and it was performed with 16 healthy male participants aged 19-30 years. In this phase, the prebiotic (200mL milk+16g inulin), probiotic (200mL milk + Lactobacillus casei 431 [>106 cfu/mL]+16g maltodextrin), synbiotic (200mL milk+16g inulin + Lactobacillus casei 431 [>106 cfu/mL]) and control (200mL milk+16g maltodextrin) test drinks were consumed with a standard breakfast on four separate test days by one week intervals, and their effects on dietary intake, hunger, satiety and appetite were assessed. The second phase was performed with 21 healthy male participants aged 19-30 years, using a placebo-controlled double-blind, randomized study design. Participants consumed the control (200mL milk+16g maltodextrin) or synbiotic (200mL milk+16g inulin+ Lactobacillus casei [>106 cfu/mL]) test drinks for 21 days with their habitual diet. At the beginning and end of the intervention, blood samples were collected at 0., 30., 60. and 120. minutes following the test day protocol to analyse serum glucose, insulin, ghrelin, obestatin and PYY (peptide tyrosine tyrosine) levels. In addition, dietary intake, hunger, satiety and appetite of participants were compared.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Control drink | Placebo Comparator | 200 mL milk + 16 g maltodextrin |
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| Test drink | Active Comparator | 200 mL milk + 16 g inulin + Lactobacillus casei [>106 cfu/mL] |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Synbiotic test drink | Other | In a healthy male population, participants consumed a synbiotic test drink containing 200 mL milk + 16 g inulin + Lactobacillus casei431 [>106cfu/mL] per day for 21 days with their habitual diet. |
| Measure | Description | Time Frame |
|---|---|---|
| Change in dietary energy and nutrient intakes by 3-day dietary record method | Energy and nutrients intakes were assessed using a 3-day dietary record method at baseline (including the mean dietary intake of Day -3, Day -2 and Day -1) and at end of the intervention (including the mean dietary intake of Day 19, Day 20 and Day 21). | At the beginning and end of the intervention (Day 0 and Day 21) |
| Change in appetite sensations | Appetite sensation was measured using 100-mm visual analog scale with a minimum value of 0 and a maximum value of 100 at six points including before the breakfast (0.) and following 30., 60., 90., 120. and 180. minutes. Lower scores mean a better outcome. | 0., 30., 60., 90., 120. and 180. minutes at the beginning and end of the intervention (Day 0 and Day 21) |
| Change in body weight | Body weight was measured | At the beginning and end of the intervention (Day 0 and Day 21) |
| Measure | Description | Time Frame |
|---|---|---|
| Change in area under the serum glucose concentration versus time curve (AUC) | Serum glucose concentrations were measured at four point including before the breakfast (0.) and following 30., 60. and 120. minutes to provide a curve. | 0., 30., 60. and 120. minutes at the beginning and end of the intervention (Day 0 and Day 21) |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Zehra Buyuktuncer, PhD, Prof | Hacettepe University | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Hacettepe University, Faculty of Health Sciences, Department of Nutrition and Dietetics | Ankara | 06230 | Turkey (Türkiye) |
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| ID | Term |
|---|---|
| D001835 | Body Weight |
| ID | Term |
|---|---|
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
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This study has two phases. First phase had a randomised, double blind, placebo-controlled crossover study design.
The second phase had a randomized, double-blind, placebo-controlled parallel study design. The second phase is going to be described below.
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Triple (Participant, Investigator, Outcomes Assessor)
| Control drink | Other | In a healthy male population, participants consumed a synbiotic test drink containing 200 mL milk + 16 g maltodextrin per day for 21 days with their habitual diet. |
|
| Change in area under the serum insulin concentration versus time curve (AUC) |
Serum insulin concentrations were measured at four point including before the breakfast (0.) and following 30., 60. and 120. minutes to provide a curve. |
| 0., 30., 60. and 120. minutes at the beginning and end of the intervention (Day 0 and Day 21) |
| Change in area under the serum obestatin concentration versus time curve (AUC) | Serum obestatin concentrations were measured at four point including before the breakfast (0.) and following 30., 60. and 120. minutes to provide a curve. | 0., 30., 60. and 120. minutes at the beginning and end of the intervention (Day 0 and Day 21) |
| Change in area under the serum ghrelin concentration versus time curve (AUC) | Serum ghrelin concentrations were measured at four point including before the breakfast (0.) and following 30., 60. and 120. minutes to provide a curve. | 0., 30., 60. and 120. minutes at the beginning and end of the intervention (Day 0 and Day 21) |
| Change in area under the serum PYY concentration versus time curve (AUC) | Serum PYY concentrations were measured at four point including before the breakfast (0.) and following 30., 60. and 120. minutes to provide a curve. | 0., 30., 60. and 120. minutes at the beginning and end of the intervention (Day 0 and Day 21) |
| Change in serum fasting adiponectin concentration | Serum fasting adiponectin concentrations were measured at the beginning and end of the intervention | At the beginning and end of the intervention (Day 0 and Day 21) |
| Change in dietary energy and nutrient intakes by diet diary method | Energy and nutrients intakes were also assessed using diet diary method during 21-day intervention to confirm the changes assessed by 3-day dietary record. | Day 0, Day 1, Day 2, Day 3, Day 4, Day 5, Day 6, Day 7, Day 8, Day 9, Day 10, Day 11, Day 12, Day 13, Day 14, Day 15, Day 16, Day 17, Day 18, Day 19, Day 20, Day 21 |