- ICH GCP
- US Clinical Trials Registry
- Klinisk forsøg NCT01719900
Evaluation of Pulse Fibre Supplementation on Obesity and the Metabolic Syndrome
Evaluation of Pulse Fibre Supplementation in Obesity and the Metabolic Syndrome: Generating Evidence in Support of Health Claims
Studieoversigt
Status
Betingelser
Intervention / Behandling
Detaljeret beskrivelse
The main objective of our study is to assess the effects of pulse fibre supplementation on weight loss in an overweight and obese adult population.
Primary objective - To determine the effects of a 12 week intake of 15g/day of pea hull fibre on weight loss supported by body composition measures.
Secondary objective - To measure glucose control and appetite regulation in overweight and obese adults consuming 15g/day of pea hull fibre compared to a placebo control with the use of plasma HbA1c and an oral glucose tolerance test (OGTT).
Tertiary objective - To examine mechanisms of action of pulse fibre supplementation by determining the impact of pulse fibre supplementation on gut microbiota, serum metabolomics and fecal short-chain fatty acid and bile acid concentrations.
Undersøgelsestype
Tilmelding (Faktiske)
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiesteder
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Alberta
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Calgary, Alberta, Canada, T2N 1N4
- University of Calgary
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Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- Males and females
- Age 18 - 70 years
- BMI 25 - 38 kg/m-2
- Stable body weight for at least 3 months prior to the study
Exclusion Criteria:
- Concomitant use of any weight loss medication, diet or exercise regime
- Use of corticosteroids, anti-depressants, anti-epileptic medications, lipid lowering medication, diabetes medications
- Previous bariatric or other intestinal surgeries
- Pregnancy or lactation
- Weight loss > 3 kg within preceding 3 months to enrollment
- Use of bulk laxatives or probiotics/prebiotics supplements
- Antibiotic use in the past month
- Clinically significant cardiovascular or respiratory or liver disease
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Dobbelt
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
|---|---|
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Eksperimentel: Pulse Fibre
The intervention group will receive a biscuit containing 5g/serving of yellow pea fibre to be eaten 3 times per day approximately 30 minutes prior to their 3 largest meals.
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Yellow pea hull fibre incorporated into a biscuit at 5 g/serving.
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Placebo komparator: Control
The placebo group will receive a biscuit an isocaloric control biscuit that is similar in taste and texture and without pulse fibre to be eaten 3 times per day approximately 30 minutes prior to their 3 largest meals.
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Control biscuit with no yellow pea hull fibre.
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Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Change in Fat Mass at 12 Weeks
Tidsramme: Value at 12 weeks minus value at baseline
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Value at 12 weeks minus value at baseline assessed with dual energy x-ray absorptiometry.
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Value at 12 weeks minus value at baseline
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Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
HbA1c at 12 Weeks
Tidsramme: 12 weeks
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Assessed via HbA1c
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12 weeks
|
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Change in Objective Appetite at 12 Weeks
Tidsramme: 12 weeks minus baseline
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Value at 12 weeks minus baseline energy intake during weighed lunch buffet.
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12 weeks minus baseline
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Andre resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Cholesterol Profile at 12 Weeks
Tidsramme: 12 weeks
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Serum LDL (low density lipoprotein) cholesterol
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12 weeks
|
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Serum Cytokine at 12 Weeks
Tidsramme: 12 weeks
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Serum cytokine IL-6 measured at 12 weeks
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12 weeks
|
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Alpha Diversity of Gut Microbiota at 12 Weeks
Tidsramme: 12 weeks
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Gut microbiota alpha diversity measured at 12 weeks as Chao index.
Chao index is an abundance-based estimator of species richness within a sample.
There are no preset minimum and maximum values but scores typically range from 0 to 4000.
A higher score is generally regarded as better.
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12 weeks
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Serum Metabolomics at 12 Weeks
Tidsramme: 12 weeks
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Serum metabolomics measured at 12 weeks using 1H-NMR analysis.
Principal component analysis is used to see if two or more groups of samples separate into distinct clusters.
The principal components generated in this analysis range from 0-100%.
A higher value means that more variability among the samples is explained by this principal component.
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12 weeks
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Fecal Short-chain Fatty Acid Concentrations
Tidsramme: 12 weeks
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Fecal acetate concentration measured at 12 weeks
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12 weeks
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Fecal Bile Acid Concentration
Tidsramme: 12 weeks
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Fecal cholic acid concentration measured at 12 weeks
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12 weeks
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Samarbejdspartnere og efterforskere
Sponsor
Samarbejdspartnere
Efterforskere
- Ledende efterforsker: Raylene Reimer, PhD, RD, University of Calgary
Publikationer og nyttige links
Generelle publikationer
- Lambert JE, Parnell JA, Han J, Sturzenegger T, Paul HA, Vogel HJ, Reimer RA. Evaluation of yellow pea fibre supplementation on weight loss and the gut microbiota: a randomized controlled trial. BMC Gastroenterol. 2014 Apr 8;14:69. doi: 10.1186/1471-230X-14-69.
- Lambert JE, Parnell JA, Tunnicliffe JM, Han J, Sturzenegger T, Reimer RA. Consuming yellow pea fiber reduces voluntary energy intake and body fat in overweight/obese adults in a 12-week randomized controlled trial. Clin Nutr. 2017 Feb;36(1):126-133. doi: 10.1016/j.clnu.2015.12.016. Epub 2016 Jan 11.
- Mayengbam S, Lambert JE, Parnell JA, Tunnicliffe JM, Nicolucci AC, Han J, Sturzenegger T, Shearer J, Mickiewicz B, Vogel HJ, Madsen KL, Reimer RA. Impact of dietary fiber supplementation on modulating microbiota-host-metabolic axes in obesity. J Nutr Biochem. 2019 Feb;64:228-236. doi: 10.1016/j.jnutbio.2018.11.003. Epub 2018 Nov 26.
Datoer for undersøgelser
Studer store datoer
Studiestart
Primær færdiggørelse (Faktiske)
Studieafslutning (Faktiske)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- 24804
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
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