Potential Abnormality of Glucose ToleranceNCT05702359
Acute Effects of Juice Consumption With Biofunctional Compounds and Probiotics on Glucose Metabolism
A study testing Glucose as reference food, Juice with vitamin D3 and Juice with n-3 fatty acids in people with Potential Abnormality of Glucose Tolerance and Appetite Disorders, run by Agricultural University of Athens at 1 site in Greece.
Trial summary
This study investigated the short-term effects of fruit juice enriched with Vitamin D3 or n-3 PUFA or probiotics and the combination of the three ingredients on glucose metabolism. Read more about this study
- Who is it for?
- Ages 18 to 55 yearsHealthy volunteers can take part
- Conditions the study is for
- Potential Abnormality of Glucose Tolerance, Appetite Disorders
- What is being tested?
- Glucose as reference food, Juice with vitamin D3 and Juice with n-3 fatty acids
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 11 participants
- Where
- 1 siteGreece
- Study dates
- 2 Nov 2022to 25 Jan 2023
- 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 55 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Healthy
- Non-smoking
- Non-diabetic men and women
- Body mass index between 18.5 and 25 kg.m2
Who cannot join
- Severe chronic disease (e.g. cardiovascular diseases, diabetes mellitus, kidney or liver conditions, endocrine conditions)
- Gastrointestinal disorders
- Pregnancy
- Lactation
- Competitive sports
- Alcohol abuse
- Drug dependency
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Acute Effects of Fruit Juice Enriched With Vitamin D3 or n-3 Fatty Acids or Probiotics and the Combination of the Three Ingredients on Glucose Metabolism in Healthy Adults
This study investigated the short-term effects of fruit juice enriched with Vitamin D3 or n-3 PUFA or probiotics and the combination of the three ingredients on glucose metabolism.
Read the detailed description
This study aimed to 1. Determine the glycemic index and glycemic load of mixed fruit juice (pomegranate, grape, apple, and orange) enriched with Vitamin D3 or n-3 PUFA or probiotics, and the combination of the three bio-functional ingredients, compared to regular mixed fruit juice and the reference food (D-glucose), and 2.Examine the short-term effects of the five mixed fruit juices on postprandial blood glucose and salivary insulin responses, blood pressure, and subjective appetite, in healthy adults.
- Being tested
- Glucose as reference food, Control juice, Juice with vitamin D3, Juice with n-3 fatty acids, Juice with probiotics
- Keywords
- blood glucose, insulin, glycemic index, glycemic load, juices, probiotics, vitamin D3, n-3 fatty acids
- Medical subject headings
- Feeding and Eating Disorders, Insulin Resistance
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Glucose as reference foodOther
Also called reference drink D-Glucose
Eleven healthy, normal body weight subjects after 10-14hr fast, consumed 50g glucose diluted in 300mL water, tested two times, in different visits, within 5-10 min. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90, 120, 150 and 180 min. Salivary insulin samples were taken at baseline, 15, 30, 45, 60, 90, 120, and 180 min.
Control juiceOther
Eleven healthy, normal body weight subjects after 10-14hr fast, consumed 50g available carbohydrates from control juice (consisted of pomegranate, grape, apple and orange), tested once, within 5-10 min. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90, 120, 150 and 180 min. Salivary insulin samples were taken at baseline, 15, 30, 45, 60, 90, 120, and 180 min.
Juice with vitamin D3Other
Also called Vitamin D3
Eleven healthy, normal body weight subjects after 10-14hr fast, consumed 50g available carbohydrates from juice (consisted of pomegranate, grape, apple and orange) containing vitamin D3, tested once, within 5-10 min. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90, 120, 150 and 180 min. Salivary insulin samples were taken at baseline, 15, 30, 45, 60, 90, 120, and 180 min.
Juice with n-3 fatty acidsOther
Also called n-3 fatty acids
Eleven healthy, normal body weight subjects after 10-14hr fast, consumed 50g available carbohydrates from juice (consisted of pomegranate, grape, apple and orange) containing n-3 fatty acids, tested once, within 5-10 min. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90, 120, 150 and 180 min. Salivary insulin samples were taken at baseline, 15, 30, 45, 60, 90, 120, and 180 min.
Juice with probioticsOther
Also called probiotics
Eleven healthy, normal body weight subjects after 10-14hr fast, consumed 50g available carbohydrates from juice (consisted of pomegranate, grape, apple and orange) containing probiotics, tested once, within 5-10 min. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90, 120, 150 and 180 min. Salivary insulin samples were taken at baseline, 15, 30, 45, 60, 90, 120, and 180 min.
Juice with probiotics, vitamin D3, and n-3 fatty acidsOther
Also called probiotics, vitamin D-3, and n-3 fatty acids
Eleven healthy, normal body weight subjects after 10-14hr fast, consumed 50g available carbohydrates from juice (consisted of pomegranate, grape, apple and orange) containing probiotics, vitamin D3 and n-3 fatty acids, tested once, within 5-10 min. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90, 120, 150 and 180 min. Salivary insulin samples were taken at baseline, 15, 30, 45, 60, 90, 120, and 180 min.
| Study group | Role | What they receive |
|---|---|---|
| Glucose as reference food | Experimental | Eleven healthy, normal body weight (male: 6, female: 5) adults after a 12hr fast, consumed 50g available carbohydrates from D-glucose, tested two times, in different visits as reference food, along with 300mL water. Fingertip capillary blood glucose samples were collected at baseline and 15, 30, 45, 60, 90, 120, 150, and 180 min after test drink consumption. Salivary insulin samples were collected at baseline, 15, 30, 45, 60, 90, 120, and 180 min after test drink consumption. Receives: Other: Glucose as reference food |
| Control juice | Experimental | Eleven healthy, normal body weight (male: 6, female: 5) adults after a 12hr fast, consumed 50g available carbohydrates from control mixed fruit juice (pomegranate, grape, apple and orange), tested once, in random order, along with 300mL water. Fingertip capillary blood glucose samples were collected at baseline and 15, 30, 45, 60, 90, 120, 150, and 180 min after test drink consumption. Salivary insulin samples were collected at baseline, 15, 30, 45, 60, 90, 120, and 180 min after test drink consumption. Receives: Other: Control juice |
| Juice containing vitamin D3 | Experimental | Eleven healthy, normal body weight (male: 6, female: 5) adults after a 12hr fast, consumed 50g available carbohydrates from mixed fruit juice enriched with vitamin D3, tested once, in random order, along with 300mL water. Fingertip capillary blood glucose samples were collected at baseline and 15, 30, 45, 60, 90, 120, 150, and 180 min after test drink consumption. Salivary insulin samples were collected at baseline, 15, 30, 45, 60, 90, 120, and 180 min after test drink consumption. Receives: Other: Juice with vitamin D3 |
| Juice containing n-3 polyunsaturated fatty acids (PUFA) | Experimental | Eleven healthy, normal body weight (male: 6, female: 5) adults after a 12hr fast, consumed 50g available carbohydrates from mixed fruit juice enriched with n-3 PUFA, tested once, in random order, along with 300mL water. Fingertip capillary blood glucose samples were collected at baseline and 15, 30, 45, 60, 90, 120, 150, and 180 min after test drink consumption. Salivary insulin samples were collected at baseline, 15, 30, 45, 60, 90, 120, and 180 min after test drink consumption. Receives: Other: Juice with n-3 fatty acids |
| Juice containing probiotics | Experimental | Eleven healthy, normal body weight (male: 6, female: 5) adults after a 12hr fast, consumed 50g available carbohydrates from mixed fruit juice enriched with probiotics, tested once, in random order, along with 300mL water. Fingertip capillary blood glucose samples were collected at baseline and 15, 30, 45, 60, 90, 120, 150, and 180 min after test drink consumption. Salivary insulin samples were collected at baseline, 15, 30, 45, 60, 90, 120, and 180 min after test drink consumption. Receives: Other: Juice with probiotics |
| Juice containing probiotics, vitamin D3, and n-3 PUFA | Experimental | Eleven healthy, normal body weight (male: 6, female: 5) adults after a 12hr fast, consumed 50g available carbohydrates from a mixed juice enriched with probiotics, vitamin D3, and n-3 PUFA, tested once, in random order, along with 300mL water. Fingertip capillary blood glucose samples were collected at baseline and 15, 30, 45, 60, 90, 120, 150, and 180 min after test drink consumption. Salivary insulin samples were collected at baseline, 15, 30, 45, 60, 90, 120, and 180 min after test drink consumption. Receives: Other: Juice with probiotics, vitamin D3, and n-3 fatty acids |
What is being measured
The primary outcome is the main question the study is designed to answer.
Capillary blood glucose responses
Clinically useful change in blood glucose, defined as the restoration of glucose within normal limits during the 3hr glucose tolerance test
Measured: 3 hours
Secondary outcomes (3)
Salivary insulin responses
Clinically useful change in salivary insulin, defined as the restoration of insulin within normal limits during the 3hr glucose torelance test
Measured: 3 hours
Subjective appetite rating
Useful change in subjective appetite using visual analogue scales (VAS). Participants rated their hunger, desire to eat, perceived fullness, thirst, preoccupation with food, pleasure of eating the consumed test food, and thirst, after eating on a horizontal line VAS, with a line length of 10 cm, a line width of 3 desktop publishing points, was black, had flat line endpoints, had an ascending numerical order of scale endpoints [i.e., "0" and "10", for example neither hungry (0 mm), full (100 mm) or have desire for food in the middle (50 mm)], and used "0" and "10" as numerical anchors below the left and right endpoints, respectively.
Measured: 3 hours
Blood pressure
Useful change in systolic and diastolic blood pressure before and 3hr after consumption of the juices.
Measured: 3 hours
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted27 Jan 2023
- Study start2 Nov 2022
- Primary completion20 Dec 2022
- Study completion25 Jan 2023
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
- Model description
- Crossover assignment
- Masking
- Double blind
- Who is masked
- Participant, Investigator
- Enrolment
- 11 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
- Emilia Papakonstantinou, PhD, Principal investigator, Agricultural University of Athens
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05702359
- Sponsor's protocol ID
- HRBD 78 12.10.2022
- Status last verified
- May 2023
- First submitted
- 19 Jan 2023
- Last updated
- 9 May 2023
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 9 May 2023. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Acute Effects of Fruit Juice Enriched With Vitamin D3 or n-3 Fatty Acids or Probiotics and the Combination of the Three Ingredients on Glucose Metabolism in Healthy Adults
- ClinicalTrials.gov ID
- NCT05702359
- Acronym / sponsor ID
- HRBD 78 12.10.2022
- Keywords
- blood glucose, insulin, glycemic index, glycemic load, juices, probiotics, vitamin D3, n-3 fatty acids
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 11 participants (actual)
- Lead sponsor
- Agricultural University of AthensUniversity, hospital or other
- Study start
- 2 Nov 2022 (actual)
- Primary completion
- 20 Dec 2022 (actual)
- Study completion
- 25 Jan 2023 (actual)
- First posted
- 27 Jan 2023 (actual)
- 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 the short-term effects of fruit juice enriched with Vitamin D3 or n-3 PUFA or probiotics and the combination of the three ingredients on glucose metabolism.
Detailed description
This study aimed to 1. Determine the glycemic index and glycemic load of mixed fruit juice (pomegranate, grape, apple, and orange) enriched with Vitamin D3 or n-3 PUFA or probiotics, and the combination of the three bio-functional ingredients, compared to regular mixed fruit juice and the reference food (D-glucose), and 2.Examine the short-term effects of the five mixed fruit juices on postprandial blood glucose and salivary insulin responses, blood pressure, and subjective appetite, in healthy adults.
Study design
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Double blind (participant, investigator)
- Number of arms
- 6
- Model description
- Crossover assignment
| Arm | Type | Receives |
|---|---|---|
| Glucose as reference food | Experimental | Other: Glucose as reference foodEleven healthy, normal body weight (male: 6, female: 5) adults after a 12hr fast, consumed 50g available carbohydrates from D-glucose, tested two times, in different visits as reference food, along with 300mL water. Fingertip capillary blood glucose samples were collected at baseline and 15, 30, 45, 60, 90, 120, 150, and 180 min after test drink consumption. Salivary insulin samples were collected at baseline, 15, 30, 45, 60, 90, 120, and 180 min after test drink consumption. |
| Control juice | Experimental | Other: Control juiceEleven healthy, normal body weight (male: 6, female: 5) adults after a 12hr fast, consumed 50g available carbohydrates from control mixed fruit juice (pomegranate, grape, apple and orange), tested once, in random order, along with 300mL water. Fingertip capillary blood glucose samples were collected at baseline and 15, 30, 45, 60, 90, 120, 150, and 180 min after test drink consumption. Salivary insulin samples were collected at baseline, 15, 30, 45, 60, 90, 120, and 180 min after test drink consumption. |
| Juice containing vitamin D3 | Experimental | Other: Juice with vitamin D3Eleven healthy, normal body weight (male: 6, female: 5) adults after a 12hr fast, consumed 50g available carbohydrates from mixed fruit juice enriched with vitamin D3, tested once, in random order, along with 300mL water. Fingertip capillary blood glucose samples were collected at baseline and 15, 30, 45, 60, 90, 120, 150, and 180 min after test drink consumption. Salivary insulin samples were collected at baseline, 15, 30, 45, 60, 90, 120, and 180 min after test drink consumption. |
| Juice containing n-3 polyunsaturated fatty acids (PUFA) | Experimental | Other: Juice with n-3 fatty acidsEleven healthy, normal body weight (male: 6, female: 5) adults after a 12hr fast, consumed 50g available carbohydrates from mixed fruit juice enriched with n-3 PUFA, tested once, in random order, along with 300mL water. Fingertip capillary blood glucose samples were collected at baseline and 15, 30, 45, 60, 90, 120, 150, and 180 min after test drink consumption. Salivary insulin samples were collected at baseline, 15, 30, 45, 60, 90, 120, and 180 min after test drink consumption. |
| Juice containing probiotics | Experimental | Other: Juice with probioticsEleven healthy, normal body weight (male: 6, female: 5) adults after a 12hr fast, consumed 50g available carbohydrates from mixed fruit juice enriched with probiotics, tested once, in random order, along with 300mL water. Fingertip capillary blood glucose samples were collected at baseline and 15, 30, 45, 60, 90, 120, 150, and 180 min after test drink consumption. Salivary insulin samples were collected at baseline, 15, 30, 45, 60, 90, 120, and 180 min after test drink consumption. |
| Juice containing probiotics, vitamin D3, and n-3 PUFA | Experimental | Other: Juice with probiotics, vitamin D3, and n-3 fatty acidsEleven healthy, normal body weight (male: 6, female: 5) adults after a 12hr fast, consumed 50g available carbohydrates from a mixed juice enriched with probiotics, vitamin D3, and n-3 PUFA, tested once, in random order, along with 300mL water. Fingertip capillary blood glucose samples were collected at baseline and 15, 30, 45, 60, 90, 120, 150, and 180 min after test drink consumption. Salivary insulin samples were collected at baseline, 15, 30, 45, 60, 90, 120, and 180 min after test drink consumption. |
Who may qualify
- Ages
- 18 to 55 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (4 listed)
- Healthy
- Non-smoking
- Non-diabetic men and women
- Body mass index between 18.5 and 25 kg.m2
Key exclusion criteria (7 listed)
- Severe chronic disease (e.g. cardiovascular diseases, diabetes mellitus, kidney or liver conditions, endocrine conditions)
- Gastrointestinal disorders
- Pregnancy
- Lactation
- 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 foodAlso: reference drink D-GlucoseEleven healthy, normal body weight subjects after 10-14hr fast, consumed 50g glucose diluted in 300mL water, tested two times, in different visits, within 5-10 min. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90, 120, 150 and 180 min. Salivary insulin samples were taken at baseline, 15, 30, 45, 60, 90, 120, and 180 min. | Other | Glucose as reference food |
| Control juiceEleven healthy, normal body weight subjects after 10-14hr fast, consumed 50g available carbohydrates from control juice (consisted of pomegranate, grape, apple and orange), tested once, within 5-10 min. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90, 120, 150 and 180 min. Salivary insulin samples were taken at baseline, 15, 30, 45, 60, 90, 120, and 180 min. | Other | Control juice |
| Juice with vitamin D3Also: Vitamin D3Eleven healthy, normal body weight subjects after 10-14hr fast, consumed 50g available carbohydrates from juice (consisted of pomegranate, grape, apple and orange) containing vitamin D3, tested once, within 5-10 min. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90, 120, 150 and 180 min. Salivary insulin samples were taken at baseline, 15, 30, 45, 60, 90, 120, and 180 min. | Other | Juice containing vitamin D3 |
| Juice with n-3 fatty acidsAlso: n-3 fatty acidsEleven healthy, normal body weight subjects after 10-14hr fast, consumed 50g available carbohydrates from juice (consisted of pomegranate, grape, apple and orange) containing n-3 fatty acids, tested once, within 5-10 min. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90, 120, 150 and 180 min. Salivary insulin samples were taken at baseline, 15, 30, 45, 60, 90, 120, and 180 min. | Other | Juice containing n-3 polyunsaturated fatty acids (PUFA) |
| Juice with probioticsAlso: probioticsEleven healthy, normal body weight subjects after 10-14hr fast, consumed 50g available carbohydrates from juice (consisted of pomegranate, grape, apple and orange) containing probiotics, tested once, within 5-10 min. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90, 120, 150 and 180 min. Salivary insulin samples were taken at baseline, 15, 30, 45, 60, 90, 120, and 180 min. | Other | Juice containing probiotics |
| Juice with probiotics, vitamin D3, and n-3 fatty acidsAlso: probiotics, vitamin D-3, and n-3 fatty acidsEleven healthy, normal body weight subjects after 10-14hr fast, consumed 50g available carbohydrates from juice (consisted of pomegranate, grape, apple and orange) containing probiotics, vitamin D3 and n-3 fatty acids, tested once, within 5-10 min. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90, 120, 150 and 180 min. Salivary insulin samples were taken at baseline, 15, 30, 45, 60, 90, 120, and 180 min. | Other | Juice containing probiotics, vitamin D3, and n-3 PUFA |
Primary outcome
Capillary blood glucose responses
Time frame: 3 hours
Clinically useful change in blood glucose, defined as the restoration of glucose within normal limits during the 3hr glucose tolerance test
3 secondary outcomes
Salivary insulin responses
Time frame: 3 hours
Subjective appetite rating
Time frame: 3 hours
Blood pressure
Time frame: 3 hours
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 9 May 2023.
- 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.
Emilia 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, Juice with vitamin D3 and Juice with n-3 fatty acids in people with Potential Abnormality of Glucose Tolerance and Appetite Disorders, 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 4 inclusion and 7 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 9 May 2023. 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 responses (time frame: 3 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 9 May 2023.