Effect of an Optimized Savory Cluster on Glycemic and Insulinemic Responses in Healthy Individuals

Effect of an Optimized Savory Cluster on Glycemic and Insulinemic Responses in Healthy Individuals: A Randomized, Cross-over Study

This study was to test the hypothesis that an optimized savory cluster (Test-cluster) made through a proprietary baking process combined with slow digestible carbohydrates and fiber will elicit lower postprandial blood glucose and insulin responses than a Control-cluster made from general processing procedure and with typical ingredients commonly used in commercially available snacks or bars: oats, peanuts, and corn syrup. However, since the Test-cluster contains ~30% less available-carbohydrate (24g) than the Control (33g), the postprandial responses elicited by the Test-cluster was also compared with those after a portion of White-bread matched for available-carbohydrate content. On 3 separate days, 25 healthy male or non-pregnant females aged 18-60 yr with BMI between 20 and 35 kg/m² with fasting serum glucose <7.0mmol/L (126 mg/dL) were asked to consume 1 serving (56g) of the Test- or Control-cluster or 47g White Bread and had blood glucose and insulin measured at intervals over the next 4 hr. Each serving of Test-cluster and Control-cluster contained similar amounts of total carbohydrates, protein, fat and energy content. Each serving of Test-cluster and White-bread had equivalent amount of 24g available carbohydrate.

On each test occasion, after subjects were weighed, 2 fasting blood samples were obtained by finger-prick 5min apart and after the 2nd sample, the subject started to consume a test meal. Subjects were asked to consume the entire test meal within 10 min. At the first bite a timer was started and blood samples for were taken for glucose analysis at 10, 20, 30, 40, 50, 60, 90, 120, 180 and 240 min after starting to eat. Additional blood was taken into a separate vial at -5, 0, 20, 40, 60, 90, 120, 180 and 240 min for insulin analysis. Blood samples were obtained from hands warmed with an electric heating pad for 3-5 min prior to each sample. During the 4hr of the test, participants remained seated quietly. After the last blood sample participants were offered a snack and then allowed to leave.

Study Overview

• Status: Completed
• Conditions: Peak Rise of Blood Glucose
• Intervention / Treatment: Other: Test Cluster

• Study Type: Interventional
• Enrollment (Actual): 25
• Phase: Not Applicable

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 60 years (Adult)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Male or non-pregnant females, 18-60 years of age, inclusive
• Body mass index (BMI) ≥ 20.0 and < 35 kg/m² at screening (visit 1).
• Willing to maintain habitual diet, physical activity pattern, and body weight throughout the trial and to refrain from smoking for 12hr prior to each visit.
• Willing to maintain current dietary supplement use throughout the trial. On test days, subject agrees not to take any dietary supplements until dismissal from the GI labs. Failure to comply will result in a rescheduled test visit.
• Normal fasting serum glucose (<7.0mmol/L capillary corresponding to whole blood glucose <6.3mmol/L).
• Willing to abstain from alcohol consumption and avoid vigorous physical activity for 24 h prior to all test visits.
• Absence of health conditions that would prevent fulfillment of study requirements as judged by the Investigator on the basis of medical history.
• Understanding the study procedures and willing to provide informed consent to participate in the study and authorization to release relevant protected health information to the study investigator.

Exclusion Criteria:

-

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Basic Science
• Allocation: Randomized
• Interventional Model: Crossover Assignment
• Masking: Double

Number of Arms

3

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Test-cluster; 56g of optimized savory cluster made through a proprietary process with slowly digestible carbohydrates and fiber	Other: Test Cluster; Test cluster is an optimized savory cluster made through a proprietary baking process combined with slow digestible carbohydrates and fiber
Placebo Comparator: Control-cluster; 56g of control cluster made from general baking process with typical ingredients commonly used in commercially available energy snacks or bars	Other: Test Cluster; Test cluster is an optimized savory cluster made through a proprietary baking process combined with slow digestible carbohydrates and fiber
Placebo Comparator: White-bread; 47g of white bread containing equivalent amount of available carbohydrate in 56g of optimized savory cluster	Other: Test Cluster; Test cluster is an optimized savory cluster made through a proprietary baking process combined with slow digestible carbohydrates and fiber

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Peak rise of blood glucose	0-4 hours post consumption

Secondary Outcome Measures

Outcome Measure	Time Frame
Incremental area under the curve of blood glucose	0-4 hours post consumption
Peak rise of serum insulin	0-4 hours post consumption
Incremental area under the curve of serum insulin	0-4 hours post consumption

Collaborators and Investigators

• Sponsor: PepsiCo Global R&D
• Investigators: Principal Investigator: Thomas Wolever, PhD, GI Laboratories

Study record dates

Study Major Dates

• Study Start (Actual): October 1, 2015
• Primary Completion (Actual): January 1, 2016
• Study Completion (Actual): February 1, 2016

Study Registration Dates

• First Submitted: February 17, 2016
• First Submitted That Met QC Criteria: February 22, 2016
• First Posted (Estimate): February 25, 2016

Study Record Updates

• Last Update Posted (Actual): February 5, 2018
• Last Update Submitted That Met QC Criteria: January 31, 2018
• Last Verified: January 1, 2018

More Information

Terms related to this study

• Other Study ID Numbers: PEP-1511

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO