Potential Abnormality of Glucose ToleranceNCT02935829
Short-term Effects of a Carob Snack on Postprandial Glycemic Responses and Energy Intake and Satiety
A study testing Glucose as reference food, White bread as reference food and Carob snack as test food in people with Potential Abnormality of Glucose Tolerance and Appetite; Lack or Loss, Nonorganic Origin, run by Agricultural University of Athens at 1 site in Greece.
Trial summary
This study investigated any potential associations between two preloads offered as snacks and postprandial glycemic response, subjective and objective appetite and energy intake in healthy, normal-weight adults. Read more about this study
- Who is it for?
- Ages 18 to 50 yearsHealthy volunteers can take part
- Conditions the study is for
- Potential Abnormality of Glucose Tolerance, Appetite; Lack or Loss, Nonorganic Origin
- What is being tested?
- Glucose as reference food, White bread as reference food and Carob snack as test food
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 140 participants
- Where
- 1 siteGreece
- Study dates
- Mar 2014to Sep 2016
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 50 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Healthy, non-smoking, non-diabetic men and women individuals with normal body mass index (BMI; between 18.5 and 24.9 kg/m2)
Who cannot join
- Severe chronic disease (e.g. tumors, manifest coronary heart disease, diabetes mellitus, severe kidney or liver conditions, endocrine and immunological conditions)
- Gastrointestinal disorders (e.g. chronic inflammatory bowel disease)
- Lactose intolerance
- Pregnancy
- Competitive sports
- Lactation
- Alcohol
- Drug dependency
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Short-term Effects of a Low Glycemic Index Snack Including Carob on Postprandial Glycemic Responses, Energy Intake and Satiety in Normal-weight, Healthy Adults
This study investigated any potential associations between two preloads offered as snacks and postprandial glycemic response, subjective and objective appetite and energy intake in healthy, normal-weight adults.
Read the detailed description
This study aimed at 1. firstly determine the glycemic index (GI) of a carob snack compared with an isoenergetic, equal weight chocolate cookie and 2. test the hypothesis that a carob preload consumed as snack before a meal, compared to chocolate cookie would: (a) have greater short-term effect on satiety measured by subsequent ad libitum meal intake, (b) induce greater satiety as assessed by visual analogue scales (VAS), and (c) reduce postprandial glycemic response.
- Being tested
- Glucose as reference food, White bread as reference food, Carob snack as test food, Chocolate cookie snack as test food, Carob preload
- Keywords
- energy intake, blood glucose, carob flour
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Glucose as reference foodOther
Ten subjects (male: 6, female: 4) consumed 25g glucose diluted in 250ml water, two times, in different weeks, within 5-10 min. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120 min.
White bread as reference foodOther
Ten subjects (male: 6, female: 4) consumed 25g available carbohydrate from white bread along with 250ml water, two times, in different weeks, within 10-15 min. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120 min.
Carob snack as test foodOther
Ten subjects (male: 6, female: 4) consumed 25g available carbohydrate from carob snack along with 250ml water, one time, in different weeks, within 10-15 min. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120 min.
Chocolate cookie snack as test foodOther
Ten subjects (male: 6, female: 4) consumed 25g available carbohydrate from chocolate cookie snack along with 250ml water, one time, in different weeks, within 10-15 min. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120 min.
Carob preloadOther
Fifty healthy subjects (male: 22, female: 28) consumed a standardized breakfast (bread and honey) and 2h after were offered a preload given as snack (40g carob snack). Three hours after, subjects were given ad libitum access to a meal (lunch and dessert). The meal consisted of rice, roasted chicken breast and chocolate cake. Foods were weighed before serving and any leftovers were weighed again after meal. Fingertip capillary blood glucose samples were taken before breakfast, 120min after breakfast; before preload, 120minand 180minpost-preload consumption; before meal (lunch and dessert), 60minand 120min post-meal consumption. Subjective appetite ratings were assessed with 100mm VAS.
Chocolate cookie preloadOther
Fifty healthy subjects (male: 22, female: 28) consumed a standardized breakfast (bread and honey) and 2h after were offered a preload given as snack (40g chocolate cookie). Three hours after, subjects were given ad libitum access to a meal (lunch and dessert). The meal consisted of rice, roasted chicken breast and chocolate cake. Foods were weighed before serving and any leftovers were weighed again after meal. Fingertip capillary blood glucose samples were taken before breakfast, 120min after breakfast; before preload, 120minand 180minpost-preload consumption; before meal (lunch and dessert), 60minand 120min post-meal consumption. Subjective appetite ratings were assessed with 100mm VAS.
| Study group | Role | What they receive |
|---|---|---|
| Glucose as reference food | Experimental | Ten healthy, normal-weight subjects (male: 6, female: 4) after 10-14 hr fast, consumed 25g available carbohydrate from white bread and glucose, two times, in different weeks as reference foods along with 250ml water; and 25g available carbohydrates from carob snack and chocolate cookie, one time, in different weeks along with 250ml water. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120 min. The first glucose sample was taken exactly 15min after the first bite of food or drink. Receives: Other: Glucose as reference food |
| Carob preload | Experimental | Fifty healthy subjects (male: 22, female: 28) were offered a standardized breakfast and 2h after consumed one of the two preloads (carob snack and chocolate cookie) served as snack in random order. Three hours after, subjects were given ad libitum access to a meal (lunch and dessert). Foods were weighed at the time of serving and any leftovers were weighed again after meal to determine the amount of food consumed. Fingertip capillary blood glucose samples were collected before and after foods. Subjective appetite ratings were collected using 100mm visual analogue scales (VAS). Receives: Other: Carob preload |
| White bread as reference food | Experimental | Ten healthy, normal-weight subjects (male: 6, female: 4) after 10-14 hr fast, consumed 25g available carbohydrate from white bread and glucose, two times, in different weeks as reference foods along with 250ml water; and 25g available carbohydrates from carob snack and chocolate cookie, one time, in different weeks along with 250ml water. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120 min. The first glucose sample was taken exactly 15min after the first bite of food or drink. Receives: Other: White bread as reference food |
| Carob snack as test food | Experimental | Ten healthy, normal-weight subjects (male: 6, female: 4) after 10-14 hr fast, consumed 25g available carbohydrate from white bread and glucose, two times, in different weeks as reference foods along with 250ml water; and 25g available carbohydrates from carob snack and chocolate cookie, one time, in different weeks along with 250ml water. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120 min. The first glucose sample was taken exactly 15min after the first bite of food or drink. Receives: Other: Carob snack as test food |
| Chocolate cookie snack as test food | Experimental | Ten healthy, normal-weight subjects (male: 6, female: 4) after 10-14 hr fast, consumed 25g available carbohydrate from white bread and glucose, two times, in different weeks as reference foods along with 250ml water; and 25g available carbohydrates from carob snack and chocolate cookie, one time, in different weeks along with 250ml water. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120 min. The first glucose sample was taken exactly 15min after the first bite of food or drink. Receives: Other: Chocolate cookie snack as test food |
| Chocolate cookie preload | Experimental | Fifty healthy subjects (male: 22, female: 28) were offered a standardized breakfast and 2h after consumed one of the two preloads (carob snack and chocolate cookie) served as snack in random order. Three hours after, subjects were given ad libitum access to a meal (lunch and dessert). Foods were weighed at the time of serving and any leftovers were weighed again after meal to determine the amount of food consumed. Fingertip capillary blood glucose samples were collected before and after foods. Subjective appetite ratings were collected using 100mm visual analogue scales (VAS). Receives: Other: Chocolate cookie preload |
What is being measured
The primary outcome is the main question the study is designed to answer.
Capillary blood glucose and subjective appetite ratings
Clinically useful change in serum glucose, defined as the restoration of glucose within normal limits during the 2hr glucose tolerance test. Useful change in subjective appetite (hunger, desire to eat, motivation to eat, preoccupation with thoughts of food, thirst) scores from 100mm VAS
Measured: 7 hours
Secondary outcomes (3)
Subjective appetite ratings
Useful change in subjective appetite (hunger, desire to eat, motivation to eat, preoccupation with thoughts of food, thirst) scores from 100mm VAS
Measured: 6 hours
Energy intake after preload
Useful change in energy intake the day of the intervention (actual weighing of foods consumed and leftovers and 24hr recall)
Measured: 2 hours
Energy intake next 24hours
Useful change in energy intake in the next 24hr (24hr recall) after intervention
Measured: 2 days
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted18 Oct 2016 (estimated)
- Study startMar 2014
- Primary completionDec 2015
- Study completionSep 2016
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Potential Abnormality of Glucose ToleranceStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Single blind
- Who is masked
- Investigator
- Enrolment
- 140 participants (actual)
Sponsor and investigators
- Lead sponsor
- Agricultural University of Athens
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Aimilia Papakonstantinou, Agricultural University of Athens
- Investigators
- Aimilia Papakonstantinou, PhD, Principal investigator, Agricultural University of Athens
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02935829
- Sponsor's protocol ID
- 304
- Status last verified
- Jan 2017
- First submitted
- 24 May 2016
- Last updated
- 20 Jan 2017
- Results posted
- No
- Data monitoring committee
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 20 Jan 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Short-term Effects of a Low Glycemic Index Snack Including Carob on Postprandial Glycemic Responses, Energy Intake and Satiety in Normal-weight, Healthy Adults
- ClinicalTrials.gov ID
- NCT02935829
- Acronym / sponsor ID
- 304
- Keywords
- energy intake, blood glucose, carob flour
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 140 participants (actual)
- Lead sponsor
- Agricultural University of AthensUniversity, hospital or other
- Study start
- Mar 2014
- Primary completion
- Dec 2015 (actual)
- Study completion
- Sep 2016 (actual)
- First posted
- 18 Oct 2016 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study investigated any potential associations between two preloads offered as snacks and postprandial glycemic response, subjective and objective appetite and energy intake in healthy, normal-weight adults.
Detailed description
This study aimed at 1. firstly determine the glycemic index (GI) of a carob snack compared with an isoenergetic, equal weight chocolate cookie and 2. test the hypothesis that a carob preload consumed as snack before a meal, compared to chocolate cookie would: (a) have greater short-term effect on satiety measured by subsequent ad libitum meal intake, (b) induce greater satiety as assessed by visual analogue scales (VAS), and (c) reduce postprandial glycemic response.
Study design
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Single blind (investigator)
- Number of arms
- 6
| Arm | Type | Receives |
|---|---|---|
| Glucose as reference food | Experimental | Other: Glucose as reference foodTen healthy, normal-weight subjects (male: 6, female: 4) after 10-14 hr fast, consumed 25g available carbohydrate from white bread and glucose, two times, in different weeks as reference foods along with 250ml water; and 25g available carbohydrates from carob snack and chocolate cookie, one time, in different weeks along with 250ml water. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120 min. The first glucose sample was taken exactly 15min after the first bite of food or drink. |
| Carob preload | Experimental | Other: Carob preloadFifty healthy subjects (male: 22, female: 28) were offered a standardized breakfast and 2h after consumed one of the two preloads (carob snack and chocolate cookie) served as snack in random order. Three hours after, subjects were given ad libitum access to a meal (lunch and dessert). Foods were weighed at the time of serving and any leftovers were weighed again after meal to determine the amount of food consumed. Fingertip capillary blood glucose samples were collected before and after foods. Subjective appetite ratings were collected using 100mm visual analogue scales (VAS). |
| White bread as reference food | Experimental | Other: White bread as reference foodTen healthy, normal-weight subjects (male: 6, female: 4) after 10-14 hr fast, consumed 25g available carbohydrate from white bread and glucose, two times, in different weeks as reference foods along with 250ml water; and 25g available carbohydrates from carob snack and chocolate cookie, one time, in different weeks along with 250ml water. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120 min. The first glucose sample was taken exactly 15min after the first bite of food or drink. |
| Carob snack as test food | Experimental | Other: Carob snack as test foodTen healthy, normal-weight subjects (male: 6, female: 4) after 10-14 hr fast, consumed 25g available carbohydrate from white bread and glucose, two times, in different weeks as reference foods along with 250ml water; and 25g available carbohydrates from carob snack and chocolate cookie, one time, in different weeks along with 250ml water. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120 min. The first glucose sample was taken exactly 15min after the first bite of food or drink. |
| Chocolate cookie snack as test food | Experimental | Other: Chocolate cookie snack as test foodTen healthy, normal-weight subjects (male: 6, female: 4) after 10-14 hr fast, consumed 25g available carbohydrate from white bread and glucose, two times, in different weeks as reference foods along with 250ml water; and 25g available carbohydrates from carob snack and chocolate cookie, one time, in different weeks along with 250ml water. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120 min. The first glucose sample was taken exactly 15min after the first bite of food or drink. |
| Chocolate cookie preload | Experimental | Other: Chocolate cookie preloadFifty healthy subjects (male: 22, female: 28) were offered a standardized breakfast and 2h after consumed one of the two preloads (carob snack and chocolate cookie) served as snack in random order. Three hours after, subjects were given ad libitum access to a meal (lunch and dessert). Foods were weighed at the time of serving and any leftovers were weighed again after meal to determine the amount of food consumed. Fingertip capillary blood glucose samples were collected before and after foods. Subjective appetite ratings were collected using 100mm visual analogue scales (VAS). |
Who may qualify
- Ages
- 18 to 50 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (1 listed)
- Healthy, non-smoking, non-diabetic men and women individuals with normal body mass index (BMI; between 18.5 and 24.9 kg/m2)
Key exclusion criteria (8 listed)
- Severe chronic disease (e.g. tumors, manifest coronary heart disease, diabetes mellitus, severe kidney or liver conditions, endocrine and immunological conditions)
- Gastrointestinal disorders (e.g. chronic inflammatory bowel disease)
- Lactose intolerance
- Pregnancy
- Competitive sports
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Glucose as reference foodTen subjects (male: 6, female: 4) consumed 25g glucose diluted in 250ml water, two times, in different weeks, within 5-10 min. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120 min. | Other | Glucose as reference food |
| White bread as reference foodTen subjects (male: 6, female: 4) consumed 25g available carbohydrate from white bread along with 250ml water, two times, in different weeks, within 10-15 min. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120 min. | Other | White bread as reference food |
| Carob snack as test foodTen subjects (male: 6, female: 4) consumed 25g available carbohydrate from carob snack along with 250ml water, one time, in different weeks, within 10-15 min. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120 min. | Other | Carob snack as test food |
| Chocolate cookie snack as test foodTen subjects (male: 6, female: 4) consumed 25g available carbohydrate from chocolate cookie snack along with 250ml water, one time, in different weeks, within 10-15 min. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120 min. | Other | Chocolate cookie snack as test food |
| Carob preloadFifty healthy subjects (male: 22, female: 28) consumed a standardized breakfast (bread and honey) and 2h after were offered a preload given as snack (40g carob snack). Three hours after, subjects were given ad libitum access to a meal (lunch and dessert). The meal consisted of rice, roasted chicken breast and chocolate cake. Foods were weighed before serving and any leftovers were weighed again after meal. Fingertip capillary blood glucose samples were taken before breakfast, 120min after breakfast; before preload, 120minand 180minpost-preload consumption; before meal (lunch and dessert), 60minand 120min post-meal consumption. Subjective appetite ratings were assessed with 100mm VAS. | Other | Carob preload |
| Chocolate cookie preloadFifty healthy subjects (male: 22, female: 28) consumed a standardized breakfast (bread and honey) and 2h after were offered a preload given as snack (40g chocolate cookie). Three hours after, subjects were given ad libitum access to a meal (lunch and dessert). The meal consisted of rice, roasted chicken breast and chocolate cake. Foods were weighed before serving and any leftovers were weighed again after meal. Fingertip capillary blood glucose samples were taken before breakfast, 120min after breakfast; before preload, 120minand 180minpost-preload consumption; before meal (lunch and dessert), 60minand 120min post-meal consumption. Subjective appetite ratings were assessed with 100mm VAS. | Other | Chocolate cookie preload |
Primary outcome
Capillary blood glucose and subjective appetite ratings
Time frame: 7 hours
Clinically useful change in serum glucose, defined as the restoration of glucose within normal limits during the 2hr glucose tolerance test. Useful change in subjective appetite (hunger, desire to eat, motivation to eat, preoccupation with thoughts of food, thirst) scores from 100mm VAS
3 secondary outcomes
Subjective appetite ratings
Time frame: 6 hours
Energy intake after preload
Time frame: 2 hours
Energy intake next 24hours
Time frame: 2 days
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 20 Jan 2017.
- Individual participant dataSharing planned: No
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Aimilia Papakonstantinou, PhD principal investigator
Agricultural University of Athens
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Glucose as reference food, White bread as reference food and Carob snack as test food in people with Potential Abnormality of Glucose Tolerance and Appetite; Lack or Loss, Nonorganic Origin, run by Agricultural University of Athens at 1 site in Greece.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 8 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 20 Jan 2017. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Greece. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Capillary blood glucose and subjective appetite ratings (time frame: 7 hours). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 20 Jan 2017.