Examining the Effects of Diet on Health With an Online Program
Studienübersicht
Status
Status
Bedingungen
Bedingungen
Intervention / Behandlung
Intervention / Behandlung
Detaillierte Beschreibung
Studientyp
Studientyp
Einschreibung (Tatsächlich)
Einschreibung
Phase
Phase
- Phase 2
Kontakte und Standorte
Studienorte
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California
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San Francisco, California, Vereinigte Staaten, 94115
- University of California, San Francisco
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Teilnahmekriterien
Zulassungskriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Studienberechtigte Geschlechter
Beschreibung
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.
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Behandlung
- Zuteilung: Zufällig
- Interventionsmodell: Parallele Zuordnung
- Maskierung: Single
Anzahl der Arme
Waffen und Interventionen
Teilnehmergruppe / ArmTeilnehmergruppe / Arm |
Intervention / BehandlungIntervention / Behandlung |
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Aktiver 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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Experimental: 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. |
Was misst die Studie?
Primäre Ergebnismessungen
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
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Hemoglobin A1c
Zeitfenster: 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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Sekundäre Ergebnismessungen
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Hemoglobin A1c
Zeitfenster: baseline to 32 weeks
|
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
|
Andere Ergebnismessungen
Andere Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
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Body weight
Zeitfenster: 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
Zeitfenster: 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.
|
baseline to 32 weeks
|
Mitarbeiter und Ermittler
Sponsor
Sponsor
Ermittler
Ermittler
- Hauptermittler: Rick Hecht, MD, University of California, San Francisco
- Hauptermittler: Laura R Saslow, PhD, University of Michigan
Publikationen und hilfreiche Links
Nützliche Links
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn
Studienbeginn
Primärer Abschluss (Tatsächlich)
Primärer Abschluss
Studienabschluss (Tatsächlich)
Studienabschluss
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Schätzen)
Zuerst gepostet
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Schätzen)
Letztes Update gepostet
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Andere Studien-ID-Nummern
Andere Studien-ID-Nummern
- 13-11813
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