PrediabetesNCT02188823
Examining the Effects of Diet on Health in Prediabetes With an Online Program
A study testing Low carbohydrate diet in people with Prediabetes, run by University of California, San Francisco at 1 site in United States.
Trial summary
The study is a pilot, designed to provide data regarding the feasibility and acceptability of conducting such a study on a larger scale. The present study is a clinical trial assessing a programs to help people manage prediabetes and lose weight with a low-carbohydrate diet (LC) along with information about positive… Read more about this study
- Who is it for?
- Ages 18 to 100 years
- Conditions the study is for
- Prediabetes
- What is being tested?
- Low carbohydrate diet
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 11 participants
- Where
- 1 siteUnited States
- Study dates
- Jul 2014to Sep 2015
- 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 100 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Self-reported clinical diagnosis of prediabetes occurring within the past year.
- Aged 18 years old and older
- Per the Centers for Disease Control and Prevention Diabetes Prevention Recognition Program have a self-reported body mass index (BMI) of ≥ 24 kg/m2 (≥ 22 kg/m2 if Asian).
- Willing and able to participate in the intervention such as having sufficient control over their food intake. Must have the ability to make choices about the food they eat; cannot have a lifestyle in which they eat out most of their meals.)
Who cannot join
- Unable to provide informed consent.
- Non English speaker. The intervention groups are conducted in English.
- No current use of insulin, no immediate plans to start or increase diabetic mediations, and no use of diabetes medications besides metformin. Insulin and other diabetes medications other than metformin can alter the safety of the diets, so to ensure greater safety, we will exclude diabetics using insulin or medications besides metformin.
- A substance abuse, mental health, or medical condition that, in the opinion of investigators, will make it difficult for the potential participant to participate in the intervention. Such conditions may include: cancer, liver failure, unstable coronary artery disease, severe emphysema, binge eating disorder or history of binge eating disorder, bulimia or strong history of bulimia.
- Previous use or recent changes in medications that can interfere with the measures used in the study: current use of insulin; use of systemic (oral or IV) corticosteroids in the 1 month prior to enrollment or severe autoimmune disorders or other conditions (e.g. rheumatoid arthritis, lupus), that are likely to require these medications; and initiation of new class of psychiatric medications in past 2 months. Such medications can alter measures used in our research, such as assessments of markers of inflammation, or negatively influence the safety of the diets.
- Pregnant or planning to get pregnant in the next 12 months, breastfeeding or less than 6 months post-partum. The intervention is not designed for the particular diet considerations during pregnancy and breast-feeding.
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- Current use of weight loss medications or supplements such as Alli or amphetamine-based drugs that are believed to have some effect on weight. Use of weight loss aids by potential participants will be reviewed by a core study team to determine whether participant would be eligible if they stop using the substance.
- History of or planned weight loss surgery. The intervention is not designed to address either the often substantial food intake limits that often result from weight loss surgery or the significantly disordered eating that people who fail this extreme intervention may have.
- Vegan or vegetarian. The intervention diets are more challenging for vegan and vegetarian participants.
- No or very limited internet access at a computer. Must be able to complete the online assessments and access the online class materials.
Trial locations and contacts
1 site in 1 country.
United States1 site
University of California, San Francisco
San Francisco, California, 94115
About this study
The study is a pilot, designed to provide data regarding the feasibility and acceptability of conducting such a study on a larger scale. The present study is a clinical trial assessing a programs to help people manage prediabetes and lose weight with a low-carbohydrate diet (LC) along with information about positive affect, mindful eating strategies, exercise, and sleep.
Read the detailed description
Individuals with prediabetes will be assigned to the treatment group. Classes will occur online. Participants will be evaluated at 0, 8, and 16 weeks. Our main outcome of interest is HbA1c (glycated hemoglobin, a measure indicative of blood glucose levels and tied to diabetes severity) at 16 weeks.
- Conditions
- Prediabetes
- Being tested
- Low carbohydrate diet
- Keywords
- prediabetes, obesity, mindful eating, positive affect, low carbohydrate, ketogenic, diet
- Medical subject headings
- Prediabetic State, Obesity
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Low carbohydrate dietBehavioural
| Study group | Role | What they receive |
|---|---|---|
| Low Carbohydrate Diet | Experimental | Participants will be instructed to follow a low carbohydrate, ketogenic diet: carbohydrate intake 20-35 grams a day not including fiber. Foods permitted include: meats, poultry, fish, eggs, cheese, cream, some nuts and seeds, green leafy vegetables, and most other non-starchy vegetables. Because most individuals self-limit caloric intake, no calorie restriction will be recommended.
Participants will also be taught information about exercise, sleep, mindfulness, and positive affect practices. The mindfulness-based curriculum will focus on the following elements: training on topics such as mindful meditation, mindful eating, awareness of fullness and hunger signals, and taste satiety. The positive emotion curriculum will include: training on topics such as noticing and savoring positive events, gratitude, positive reappraisal, personal strengths, attainable goals, and acts of kindness. Receives: Behavioral: Low carbohydrate diet |
What is being measured
The primary outcome is the main question the study is designed to answer.
Hemoglobin A1c
We will test whether Hemoglobin A1c changes from pre-intervention to 16 weeks.
Measured: baseline to 16 weeks
Secondary outcomes (1)
Body weight
We will test whether body weight changes from pre-intervention to 16 weeks.
Measured: baseline to 16 weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted14 Jul 2014 (estimated)
- Study startJul 2014
- Primary completionSep 2015
- Study completionSep 2015
Why it stopped: low recruitment
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for PrediabetesStudies of the same condition, open and under way.
- More trials run by University of California, San FranciscoThe sponsor's other registered studies.
- 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
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- Single blind
- Who is masked
- Outcomes assessor
- Enrolment
- 11 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of California, San Francisco
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02188823
- Sponsor's protocol ID
- 13-11813p
- Status last verified
- Jun 2017
- First submitted
- 10 Jul 2014
- Last updated
- 16 Jun 2017
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 16 Jun 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Examining the Effects of Diet on Health in Prediabetes With an Online Program
- ClinicalTrials.gov ID
- NCT02188823
- Acronym / sponsor ID
- 13-11813p
- Conditions
- Prediabetes
- Keywords
- prediabetes, obesity, mindful eating, positive affect, low carbohydrate, ketogenic, diet
- Study type
- Interventional
- Recruitment status
- TerminatedReason stopped: low recruitment
- Enrolment
- 11 participants (actual)
- Lead sponsor
- University of California, San FranciscoUniversity, hospital or other
- Study start
- Jul 2014 (actual)
- Primary completion
- Sep 2015 (actual)
- Study completion
- Sep 2015 (actual)
- First posted
- 14 Jul 2014 (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.
The study is a pilot, designed to provide data regarding the feasibility and acceptability of conducting such a study on a larger scale. The present study is a clinical trial assessing a programs to help people manage prediabetes and lose weight with a low-carbohydrate diet (LC) along with information about positive affect, mindful eating strategies, exercise, and sleep.
Detailed description
Individuals with prediabetes will be assigned to the treatment group. Classes will occur online. Participants will be evaluated at 0, 8, and 16 weeks. Our main outcome of interest is HbA1c (glycated hemoglobin, a measure indicative of blood glucose levels and tied to diabetes severity) at 16 weeks.
Study design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- Single blind (outcomes assessor)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Low Carbohydrate Diet | Experimental | Behavioral: Low carbohydrate dietParticipants will be instructed to follow a low carbohydrate, ketogenic diet: carbohydrate intake 20-35 grams a day not including fiber. Foods permitted include: meats, poultry, fish, eggs, cheese, cream, some nuts and seeds, green leafy vegetables, and most other non-starchy vegetables. Because most individuals self-limit caloric intake, no calorie restriction will be recommended. Participants will also be taught information about exercise, sleep, mindfulness, and positive affect practices. The mindfulness-based curriculum will focus on the following elements: training on topics such as mindful meditation, mindful eating, awareness of fullness and hunger signals, and taste satiety. The positive emotion curriculum will include: training on topics such as noticing and savoring positive events, gratitude, positive reappraisal, personal strengths, attainable goals, and acts of kindness. |
Who may qualify
- Ages
- 18 to 100 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (4 listed)
Key exclusion criteria (10 listed)
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 |
|---|---|---|
| Low carbohydrate diet | Behavioural | Low Carbohydrate Diet |
Primary outcome
Hemoglobin A1c
Time frame: baseline to 16 weeks
We will test whether Hemoglobin A1c changes from pre-intervention to 16 weeks.
1 secondary outcome
Body weight
Time frame: baseline to 16 weeks
Results and safety
The study was stopped early (reason given: low recruitment). Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 16 Jun 2017.
- eligibility surveyLink provided by the sponsor.
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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.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Low carbohydrate diet in people with Prediabetes, run by University of California, San Francisco at 1 site in United States.
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 10 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: stopped early, as of the sponsor's last update on 16 Jun 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 United States. 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 was stopped early (reason given: low recruitment). Results are not available in the source record.
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?
Hemoglobin A1c (time frame: baseline to 16 weeks). 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 16 Jun 2017.