Examining the Effects of Diet on Health With an Online Program
12 oktober 2015 uppdaterad av: University of California, San Francisco
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 randomized controlled clinical trial comparing two programs to help people manage diabetes and lose weight, one using a moderate-carbohydrate diet promoted by the American Diabetes Association (ADA) and the other using on a low-carbohydrate diet (LC) and mindfulness and positive affect lifestyle modifications.
Intervention content will include information about nutrition (American Diabetes Association recommended diet or carbohydrate restriction) and, in the LC group, emotion regulation, positive affect, and mindful eating strategies.
Studieöversikt
Status
Avslutad
Betingelser
Detaljerad beskrivning
Approximately individuals with type 2 diabetes will be randomized in a 1:1 ratio to treatment groups.
Classes will occur online.
Participants will be evaluated at 0, 16, and 32 weeks.
Our main outcome of interest is HbA1c (glycated hemoglobin, a measure indicative of blood glucose levels and tied to diabetes severity).
Studietyp
Interventionell
Inskrivning (Faktisk)
25
Fas
- Fas 2
Kontakter och platser
Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.
Studieorter
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California
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San Francisco, California, Förenta staterna, 94115
- University of California, San Francisco
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Deltagandekriterier
Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.
Urvalskriterier
Åldrar som är berättigade till studier
18 år till 100 år (Vuxen, Äldre vuxen)
Tar emot friska volontärer
Nej
Kön som är behöriga för studier
Allt
Beskrivning
Inclusion Criteria:
- HbA1c 6.5%-9% at screening.
- Aged 18 years old and older
- BMI 25 and above.
- Willing and able to participate in the interventions 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.)
Exclusion Criteria:
- Unable to provide informed consent.
- Non English speaker.
- No current use of insulin, no immediate plans to start or increase diabetic mediations, and no use of diabetes 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 6 months 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.
- Pregnant or planning to get pregnant in the next 12 months, breastfeeding or less than 6 months post-partum.
- Current use of weight loss medications or supplements such as Alli or amphetamine-based drugs that are believed to have some effect on weight.
- History of or planned weight loss surgery.
- 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.
Studieplan
Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.
Hur är studien utformad?
Designdetaljer
- Primärt syfte: Behandling
- Tilldelning: Randomiserad
- Interventionsmodell: Parallellt uppdrag
- Maskning: Enda
Vapen och interventioner
Deltagargrupp / Arm |
Intervention / Behandling |
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Aktiv komparator: American Diabetes Association recommended diet
Participants in the American Diabetes Association (ADA) diet group will receive standard ADA advice.
The diet includes high-fiber foods (such as vegetables, fruits, whole grains, and legumes), low-fat dairy products, fresh fish, and foods low in saturated fat.
They will be asked to use the "plate method" to guide their nutritional choices.
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Experimentell: Low Carbohydrate Diet
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 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. |
Vad mäter studien?
Primära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
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Hemoglobin A1c
Tidsram: baseline to 16 weeks
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We will test whether Hemoglobin A1c changes from pre-intervention to 16 weeks.
The key outcome measure will compare the two groups, but we will also assess whether statistically significant changes occur within groups from pre-intervention to 16 weeks.
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baseline to 16 weeks
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Sekundära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
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Hemoglobin A1c
Tidsram: baseline to 32 weeks
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We will test whether Hemoglobin A1c changes from pre-intervention to 32 weeks.
The key outcome measure will compare the two groups, but we will also assess whether statistically significant changes occur within groups from pre-intervention to 32 weeks.
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baseline to 32 weeks
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Andra resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
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Body weight
Tidsram: baseline to 16 weeks
|
We will test whether body weight changes from pre-intervention to 16 weeks.
The key outcome measure will compare the two groups, but we will also assess whether statistically significant changes occur within groups from pre-intervention to 16 weeks.
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baseline to 16 weeks
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Body weight
Tidsram: baseline to 32 weeks
|
We will test whether body weight changes from pre-intervention to 32 weeks.
The key outcome measure will compare the two groups, but we will also assess whether statistically significant changes occur within groups from pre-intervention to 32 weeks.
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baseline to 32 weeks
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Samarbetspartners och utredare
Det är här du hittar personer och organisationer som är involverade i denna studie.
Utredare
- Huvudutredare: Rick Hecht, MD, University of California, San Francisco
- Huvudutredare: Laura R Saslow, PhD, University of Michigan
Publikationer och användbara länkar
Den som ansvarar för att lägga in information om studien tillhandahåller frivilligt dessa publikationer. Dessa kan handla om allt som har med studien att göra.
Användbara länkar
Studieavstämningsdatum
Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.
Studera stora datum
Studiestart
1 oktober 2013
Primärt slutförande (Faktisk)
1 juni 2015
Avslutad studie (Faktisk)
1 juni 2015
Studieregistreringsdatum
Först inskickad
18 oktober 2013
Först inskickad som uppfyllde QC-kriterierna
18 oktober 2013
Första postat (Uppskatta)
23 oktober 2013
Uppdateringar av studier
Senaste uppdatering publicerad (Uppskatta)
14 oktober 2015
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
12 oktober 2015
Senast verifierad
1 oktober 2015
Mer information
Termer relaterade till denna studie
Andra studie-ID-nummer
- 13-11813
Denna information hämtades direkt från webbplatsen clinicaltrials.gov utan några ändringar. Om du har några önskemål om att ändra, ta bort eller uppdatera dina studieuppgifter, vänligen kontakta register@clinicaltrials.gov. Så snart en ändring har implementerats på clinicaltrials.gov, kommer denna att uppdateras automatiskt även på vår webbplats .