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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT02543164
Other study ID # KME68/02/15
Secondary ID
Status Completed
Phase N/A
First received September 1, 2015
Last updated September 13, 2017
Start date February 2015
Est. completion date September 2017

Study information

Verified date September 2017
Source Nutrition Institute, Slovenia
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Objective of the study is to investigate the influence of beta-glucan enriched barley flour as constituent of bread on glycaemic response (GR) in healthy human volunteers. Glycaemic response will be measured as AUC of blood glucose after consumption of barley bread, and compared with white bread.


Description:

Objective of the study is to investigate the influence of beta-glucan enriched barley flour as constituent of bread on glycaemic response (GR) in healthy human volunteers. Glycaemic response will be measured as the area under the curve (AUC) of blood glucose after consumption of barley bread(s), and compared with AUC for white bread. Measurements will be done in line with recommendations. In line with recommendations ten healthy human volunteers will be tested to obtain a sufficient statistical power. GR measurement will be based on available carbohydrates. Amount of bread will be standardised to contain 50 g of available carbohydrates. Subjects will consume bread sample with 250 mL of water, within 10-15 minutes. Blood sampling times will be at 0 min (baseline sample), followed by 15, 30, 45, 60, 90 and 120 min after starting to eat the test meal. Glucose levels will be measured in capillary blood. For reference and test meals, the investigators will do at least 2 AUC measurements per subject. AUC calculation will be based on incremental AUC, ignoring area under the baseline. Comparison will be done as the mean of the individual ratios.

The differences between the different products ingested will be analyzed with the statistical test of analysis of variance. In case of failure to find homogeneity in the variances the nonparametric ANOVA, the Kruskal-Wallis test, will be used. The results will be expressed as mean ± standard deviation for each with a significance level of 0.05 for all the statistical tests.


Recruitment information / eligibility

Status Completed
Enrollment 10
Est. completion date September 2017
Est. primary completion date September 2017
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years to 65 Years
Eligibility Inclusion Criteria:

- Willingness' to participate, self-diagnosed as healthy

- Age: 18-65 years

Exclusion Criteria:

- Allergy or intolerances to ingredients of tested products (bread)

- Renal impairment

- Diagnosed diabetes

- Level of glucose above 5.6mmol/l at first measurement

- Thyroid disease

- Use of medicines for lowering blood fats and/or preparations for weight loss or reducing the absorption of nutrients from the digestive tract

Study Design


Related Conditions & MeSH terms


Intervention

Other:
REFERENCE: white bread
Determination of glycemic response after consumption of white bread: Capillary glucose will be taken at 0 min (baseline sample), followed by 15, 30, 45, 60, 90 and 120 min after starting to eat the meal to calculate the area under the curve (AUC).
TEST: b-glucan enriched bread
Determination of glycemic response after consumption of bread enriched with barley beta-glucans (Test A) : Capillary glucose will be taken at 0 min (baseline sample), followed by 15, 30, 45, 60, 90 and 120 min after starting to eat the meal to calculate the area under the curve (AUC).

Locations

Country Name City State
n/a

Sponsors (2)

Lead Sponsor Collaborator
Nutrition Institute, Slovenia Valens Int. d.o.o., Slovenija

References & Publications (1)

Brouns F, Bjorck I, Frayn KN, Gibbs AL, Lang V, Slama G, Wolever TM. Glycaemic index methodology. Nutr Res Rev. 2005 Jun;18(1):145-71. doi: 10.1079/NRR2005100. — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary Reduced area under the curve (AUC) of blood glucose levels in bread enriched with barley beta-glucans (reduced glycemic response) Glycaemic response will be measured as the area under the curve (AUC) of blood glucose after consumption of barley bread(s), and compared with AUC for white bread. Blood sampling times will be at 0 min (baseline sample), followed by 15, 30, 45, 60, 75, 90 and 120 min after starting to eat the test meal. Glucose levels will be measured in capillary blood. AUC calculation will be based on incremental AUC, ignoring area under the baseline. Comparison will be done as the mean of the individual ratios. Primary outcome measure is significant reducment of AUC for bread enriched with barley beta-glucans (P<0.05). up to 60 days (1 day experiments)
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