Effect of Meal Sequence and Eating Speed on Blood Glucose After Eating Western Breakfast Among Healthy Young Adults

November 5, 2026 updated by: University of Veterinary and Animal Sciences, Lahore - Pakistan

Impact of Meal Sequence and Eating Speed on Postprandial Glycemic Response of an Isocaloric Western Breakfast Among Healthy Young Adults

The goal of this clinical trial is to investigate the effects of meal sequence(the order in which carbohydrates/starches and non-starchy vegetables are consumed) and eating speed(slow or fast) on postprandial blood glucose response in healthy young adults (n=22) aged 20-25 years. The main questions it aims to answer are:

  • Does consuming carbohydrate-containing foods before or after non-starchy vegetables influence postprandial blood glucose response?
  • Does eating a standardized breakfast slowly (over approximately 20 minutes) or quickly (over approximately 10 minutes) affect postprandial blood glucose response?
  • Do meal sequence and eating speed together influence postprandial glycemic response? Researchers will compare four breakfast conditions combining two meal sequences (carbohydrate-first and non-starchy vegetable-first) with two eating speeds (slow and fast) to determine their individual and combined effects on postprandial metabolic responses.

Participants will:

  • Consume a standardized, isocaloric Western-style breakfast under four different experimental conditions.
  • Consume the breakfast in the assigned food order and within the specified eating duration during each experimental visit.
  • Attend four experimental visits in a randomized order, with a washout period between visits.
  • Provide blood samples before and at 30, 60, 90, and 120 minutes after breakfast consumption to assess blood glucose levels.
  • Undergo assessment of serum insulin and triglyceride responses according to the study protocol.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
22

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • Pakistan
    • Punjab Province
      • Lahore, Punjab Province, Pakistan
        • University of Veterinary and Animal Sciences, Paksitan
        • Contact:
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 25 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

Male

Description

Inclusion Criteria:

Healthy male adults aged 18-25 years, with a BMI of 18.0-24.9 kg/m², without known diseases, regular medication use, or allergies to study food ingredients.

Exclusion Criteria:

Individuals with diabetes or other diagnosed diseases, those using medications, following specific diets, or having dietary restrictions or allergies to study food ingredients will be excluded.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Basic Science
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Sequence 1: A-B-D-C

Arm 1 - Sequence 1 (A-B-D-C): A: Carbohydrate-first + slow eating (20 minutes); B: Carbohydrate-first + fast eating (10 minutes) ; C: Vegetable-first + slow eating (20 minutes) ; D: Vegetable-first + fast eating (10 minutes). Participants receive an Isocaloric breakfast containg toasted white bread, scrambled eggs and stir fired non-starchy vegetables, in the sequence as :carbohydrate-first with slow eating, carbohydrate-first with fast eating, vegetable-first with fast eating, and vegetable-first with slow eating, in that order, over four weekly visits.
Behavioral: Intervention A: Carbohydrate-First, Slow Eating

Participants will receive an Isocaloric breakfast containg toasted white bread, scrambled eggs and stir fired non-starchy vegetables. Participants will consume the carbohydrate-containing portion of the standardized, isocaloric Western-style breakfast first, followed by the remaining meal components. The entire breakfast is to be consumed slowly over approximately 20 minutes.

Behavioral: Intervention B: Carbohydrate-First, Fast Eating

Participants will receive an Isocaloric breakfast containg toasted white bread, scrambled eggs and stir fired non-starchy vegetables. Participants will consume the carbohydrate-containing portion of a standardized, isocaloric Western-style breakfast first, followed by the remaining meal components. The entire breakfast is to be consumed quickly over approximately 10 minutes.

Behavioral: Intervention C: Vegetable-First, Slow Eating

Participants will receive an Isocaloric breakfast containg toasted white bread, scrambled eggs and stir fired non-starchy vegetables. Participants will consume the non-starchy vegetable portion of a standardized, isocaloric Western-style breakfast first, followed by the remaining meal components. The entire breakfast is to be consumed slowly over approximately 20 minutes.

Behavioral: Intervention D: Vegetable-First, Fast Eating

Participants will receive an Isocaloric breakfast containg toasted white bread, scrambled eggs and stir fired non-starchy vegetables. Participants will consume the non-starchy vegetable portion of a standardized, isocaloric Western-style breakfast first, followed by the remaining meal components. The entire breakfast is to be consumed quickly over approximately 10 minutes.
Experimental: Sequence 2: B-C-A-D

Arm 2: Sequence 2 (B-C-A-D) A: Carbohydrate-first + slow eating (20 minutes); B: Carbohydrate-first + fast eating (10 minutes) ; C: Vegetable-first + slow eating (20 minutes) ; D: Vegetable-first + fast eating (10 minutes).

Experimental arm. Participants receive an Isocaloric breakfast containg toasted white bread, scrambled eggs and stir fired non-starchy vegetables, in the following order: carbohydrate-first with fast eating, vegetable-first with slow eating, carbohydrate-first with slow eating, and vegetable-first with fast eating.
Behavioral: Intervention A: Carbohydrate-First, Slow Eating

Participants will receive an Isocaloric breakfast containg toasted white bread, scrambled eggs and stir fired non-starchy vegetables. Participants will consume the carbohydrate-containing portion of the standardized, isocaloric Western-style breakfast first, followed by the remaining meal components. The entire breakfast is to be consumed slowly over approximately 20 minutes.

Behavioral: Intervention B: Carbohydrate-First, Fast Eating

Participants will receive an Isocaloric breakfast containg toasted white bread, scrambled eggs and stir fired non-starchy vegetables. Participants will consume the carbohydrate-containing portion of a standardized, isocaloric Western-style breakfast first, followed by the remaining meal components. The entire breakfast is to be consumed quickly over approximately 10 minutes.

Behavioral: Intervention C: Vegetable-First, Slow Eating

Participants will receive an Isocaloric breakfast containg toasted white bread, scrambled eggs and stir fired non-starchy vegetables. Participants will consume the non-starchy vegetable portion of a standardized, isocaloric Western-style breakfast first, followed by the remaining meal components. The entire breakfast is to be consumed slowly over approximately 20 minutes.

Behavioral: Intervention D: Vegetable-First, Fast Eating

Participants will receive an Isocaloric breakfast containg toasted white bread, scrambled eggs and stir fired non-starchy vegetables. Participants will consume the non-starchy vegetable portion of a standardized, isocaloric Western-style breakfast first, followed by the remaining meal components. The entire breakfast is to be consumed quickly over approximately 10 minutes.
Experimental: Sequence 3: C-D-B-A

Arm 3 - Sequence 3 (C-D-B-A): A: Carbohydrate-first + slow eating (20 minutes); B: Carbohydrate-first + fast eating (10 minutes) ; C: Vegetable-first + slow eating (20 minutes) ; D: Vegetable-first + fast eating (10 minutes). Participants receive an Isocaloric breakfast containg toasted white bread, scrambled eggs and stir fired non-starchy vegetables, in the sequence as: vegetable-first with slow eating, vegetable-first with fast eating, carbohydrate-first with fast eating, and carbohydrate-first with slow eating, in that order, over four weekly visits.
Behavioral: Intervention A: Carbohydrate-First, Slow Eating

Participants will receive an Isocaloric breakfast containg toasted white bread, scrambled eggs and stir fired non-starchy vegetables. Participants will consume the carbohydrate-containing portion of the standardized, isocaloric Western-style breakfast first, followed by the remaining meal components. The entire breakfast is to be consumed slowly over approximately 20 minutes.

Behavioral: Intervention B: Carbohydrate-First, Fast Eating

Participants will receive an Isocaloric breakfast containg toasted white bread, scrambled eggs and stir fired non-starchy vegetables. Participants will consume the carbohydrate-containing portion of a standardized, isocaloric Western-style breakfast first, followed by the remaining meal components. The entire breakfast is to be consumed quickly over approximately 10 minutes.

Behavioral: Intervention C: Vegetable-First, Slow Eating

Participants will receive an Isocaloric breakfast containg toasted white bread, scrambled eggs and stir fired non-starchy vegetables. Participants will consume the non-starchy vegetable portion of a standardized, isocaloric Western-style breakfast first, followed by the remaining meal components. The entire breakfast is to be consumed slowly over approximately 20 minutes.

Behavioral: Intervention D: Vegetable-First, Fast Eating

Participants will receive an Isocaloric breakfast containg toasted white bread, scrambled eggs and stir fired non-starchy vegetables. Participants will consume the non-starchy vegetable portion of a standardized, isocaloric Western-style breakfast first, followed by the remaining meal components. The entire breakfast is to be consumed quickly over approximately 10 minutes.
Experimental: Sequence 4: D-A-C-B A:

Arm 4: Sequence 4 (D-A-C-B) Experimental arm: A: Carbohydrate-first + slow eating (20 minutes); B: Carbohydrate-first + fast eating (10 minutes) ; C: Vegetable-first + slow eating (20 minutes) ; D: Vegetable-first + fast eating (10 minutes). Participants receive an Isocaloric breakfast containg toasted white bread, scrambled eggs and stir fired non-starchy vegetables in the following order: vegetable-first with fast eating, carbohydrate-first with slow eating, vegetable-first with slow eating, and carbohydrate-first with fast eating.
Behavioral: Intervention A: Carbohydrate-First, Slow Eating

Participants will receive an Isocaloric breakfast containg toasted white bread, scrambled eggs and stir fired non-starchy vegetables. Participants will consume the carbohydrate-containing portion of the standardized, isocaloric Western-style breakfast first, followed by the remaining meal components. The entire breakfast is to be consumed slowly over approximately 20 minutes.

Behavioral: Intervention B: Carbohydrate-First, Fast Eating

Participants will receive an Isocaloric breakfast containg toasted white bread, scrambled eggs and stir fired non-starchy vegetables. Participants will consume the carbohydrate-containing portion of a standardized, isocaloric Western-style breakfast first, followed by the remaining meal components. The entire breakfast is to be consumed quickly over approximately 10 minutes.

Behavioral: Intervention C: Vegetable-First, Slow Eating

Participants will receive an Isocaloric breakfast containg toasted white bread, scrambled eggs and stir fired non-starchy vegetables. Participants will consume the non-starchy vegetable portion of a standardized, isocaloric Western-style breakfast first, followed by the remaining meal components. The entire breakfast is to be consumed slowly over approximately 20 minutes.

Behavioral: Intervention D: Vegetable-First, Fast Eating

Participants will receive an Isocaloric breakfast containg toasted white bread, scrambled eggs and stir fired non-starchy vegetables. Participants will consume the non-starchy vegetable portion of a standardized, isocaloric Western-style breakfast first, followed by the remaining meal components. The entire breakfast is to be consumed quickly over approximately 10 minutes.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Change in Postprandial Blood Glucose Incremental Area Under the Curve (iAUC) from 0 to 120 Minutes Across Four Breakfast Conditions
Time Frame: At baseline and 30, 60, 90, and 120 minutes after breakfast consumption during each of the four intervention visits (approximately 4 weeks).

Measurement details: Blood glucose concentrations measured at baseline (0 minutes) and 30, 60, 90, and 120 minutes after breakfast consumption. The incremental area under the curve (iAUC) will be calculated to compare postprandial glycemic responses across the four conditions.
At baseline and 30, 60, 90, and 120 minutes after breakfast consumption during each of the four intervention visits (approximately 4 weeks).

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Postprandial Serum Insulin Response Across Four Breakfast Conditions.
Time Frame: At baseline and 30, 60, 90, and 120 minutes after breakfast consumption during each intervention visit.

Serum insulin concentrations will be assessed following consumption of each breakfast condition to evaluate differences in postprandial insulin responses associated with meal sequence and eating speed.
At baseline and 30, 60, 90, and 120 minutes after breakfast consumption during each intervention visit.
Postprandial Serum Triglyceride Response Across Four Breakfast Conditions
Time Frame: At baseline and 30, 60, 90, and 120 minutes after breakfast consumption during each intervention visit.

Serum triglyceride concentrations will be assessed following consumption of each breakfast condition to compare postprandial lipid responses associated with meal sequence and eating speed.
At baseline and 30, 60, 90, and 120 minutes after breakfast consumption during each intervention visit.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University of Veterinary and Animal Sciences, Lahore - Pakistan

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
December 1, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
March 1, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
March 1, 2027

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 5, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 5, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 12, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
November 12, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 5, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
October 1, 2026

More Information

Terms related to this study

Keywords

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • MealSequence-GlycemicResponse

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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