- ICH GCP
- Yhdysvaltain kliinisten tutkimusten rekisteri
- Kliininen tutkimus NCT01742572
New DIETs: New Dietary Interventions Enhancing the Treatment for Weight Loss (New DIETs)
NEW Dietary Interventions to Enhance the Treatments for Weight Loss (NEW DIETs for Weight Loss Study)
Tutkimuksen yleiskatsaus
Yksityiskohtainen kuvaus
This study involves five groups. Participants will be randomly assigned to one of these groups. All groups will receive information on a dietary approach aimed at losing weight. All groups will be asked to favor foods that are low fat and have a low glycemic index, which means they will be asked to favor foods that don't cause a quick rise in blood sugar (for example, choosing oatmeal over cornflakes for breakfast). All groups will also be asked to take a vitamin B-12 supplement each day of their choosing (can be a multivitamin).
Participants who are eligible on the online screener will be contacted by phone to complete a few additional screening questions and invited to an orientation meeting.
Below are the steps in the study:
- If participants are accepted into the study, participants will come to the study site (USC Public Health Research Center) to learn more about the study, have their weight and height measured, learn how to complete questionnaires online, and complete their consent form. This meeting will last approximately 1.5 hours.
- Participants will then complete some questionnaires that measure their diet and physical activity levels on a computer at home or other location where participants have computer/internet access. We will also ask participants to keep all their grocery and restaurant receipts during this time to bring back with participants to the next meeting.
- Participants will come back for a meeting to have their weight measured again and participants will find out their diet group assignment. Participants will receive a 1.25 hour overview of the diet participants have been assigned to and be provided with materials on this diet.
If participants are assigned to the vegan, vegetarians, pesco-, or semi-vegetarian diets, they will complete the following over the 8-week study:
- Participants will attend weekly meetings over 8 weeks.
- We will obtain their weight and collect online questionnaires at weeks 4 and 8.
- During the 8-week study, we will ask participants to complete an online weekly questionnaire which will assess if participants are following the diet and their weight. This will take approximately 5 minutes to complete.
If participants are assigned to the omnivorous diet, they will only come in for meetings at baseline, 4 weeks, and 8 weeks.
- We will obtain their weight and collect online questionnaires at weeks 4 and 8.
- Participants will receive e-mailed lessons of their diet plan each week.
- During the 8-week study, we will ask participants to complete an online weekly questionnaire which will assess if participants are following the diet, and their weight. This will take approximately 5 minutes to complete.
- At week 8, participants will also be provided with information about the other 4 diets in case participants would like to try these dietary patterns after the study.
- All diet groups will be asked to collect and turn in all grocery store and restaurant receipts for 2 weeks prior to the start of the intervention and for the 8 weeks during the study.
- At study completion (8 weeks), participants will receive an incentive for participating ($20).
- Participants in all groups will be asked to take a daily multivitamin (or other reliable source of vitamin B-12) over the course of the study. You are responsible for choosing and purchasing this.
- During the study, we will ask you to keep your physical activity levels constant (keep your levels the same as what you were doing at study entry).
Opintotyyppi
Ilmoittautuminen (Todellinen)
Vaihe
- Ei sovellettavissa
Yhteystiedot ja paikat
Opiskelupaikat
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South Carolina
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Columbia, South Carolina, Yhdysvallat, 29208
- University of South Carolina
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Osallistumiskriteerit
Kelpoisuusvaatimukset
Opintokelpoiset iät
Hyväksyy terveitä vapaaehtoisia
Sukupuolet, jotka voivat opiskella
Kuvaus
Inclusion Criteria:
- be between the ages of 18-65
- have access to a computer with Internet capabilities
- be overweight (Body Mass Index of 25-49.9)
- be able to attend weekly evening meetings at the University of South Carolina in Columbia, SC (up to 8 total) starting late January 2013.
Exclusion Criteria: Participants will be ineligible to participate if they:
- have a Body Mass Index less than 25 or greater than 49.9 kg/m2
- are currently pregnant
- are younger than 18 or older than 65 years of age
- are unable to attend weekly meetings for 8 weeks
- don't have access to the Internet and a computer
- don't have access to a scale for self-monitoring weight
- aren't willing to be randomized to one of five dietary groups
- have a psychiatric disease, drug or alcohol dependency, or uncontrolled thyroid condition
- have a major health condition, such as heart conditions, diabetes, and past incidence of stroke
- have an eating disorder (participants will be screened using the Eating Attitudes Test screener-participants who do not pass this screener will be asked to contact their physician)
- currently participating in a weight loss program or taking weight loss medications
- currently following a vegan, vegetarian, or pesco-vegetarian diet
Opintosuunnitelma
Miten tutkimus on suunniteltu?
Suunnittelun yksityiskohdat
- Ensisijainen käyttötarkoitus: Hoito
- Jako: Satunnaistettu
- Inventiomalli: Rinnakkaistehtävä
- Naamiointi: Ei mitään (avoin tarra)
Aseet ja interventiot
Osallistujaryhmä / Arm |
Interventio / Hoito |
---|---|
Kokeellinen: Vegan
A vegan diet is one that does not contain any animal products (no meat, fish, poultry, eggs, or dairy) but emphasizes plant-based foods, such as fruits, vegetables, whole grains, and legumes/beans.
We will also ask you to keep foods low in fat and low in glycemic index.
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Change in dietary intake
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Kokeellinen: Vegetarian
A vegetarian diet is one that does not contain meat, fish, or poultry but does contain eggs and dairy, in addition to plant-based foods, such as fruits, vegetables, whole grains, and legumes/beans.
We will also ask you to keep foods low in fat and low in glycemic index.
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Change in dietary intake
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Kokeellinen: Pesco-Vegetarian
A pesco-vegetarian diet is one that does not contain meat or poultry but does contain fish and shellfish, eggs, and dairy, in addition to plant-based foods, such as fruits, vegetables, whole grains, and legumes/beans.
We will also ask you to keep foods low in fat and low in glycemic index.
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Change in dietary intake
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Kokeellinen: Semi-Vegetarian
A semi-vegetarian diet is one that contains all foods, including meat, poultry, fish and shellfish, eggs, and dairy, in addition to plant-based foods, such as fruits, vegetables, whole grains, and legumes/beans.
However, red meat is limited to one time per week and poultry is limited to 5 times per week or less.
We will also ask you to keep foods low in fat and low in glycemic index.
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Change in dietary intake
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Active Comparator: Omnivorous
An omnivorous diet contains all food groups.
However, as part of this study, we will ask participants in this group to keep foods low in fat and low in glycemic index.
Participants in this group will not need to attend weekly meetings but will receive information via e-mail each week.
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Change in dietary intake
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Mitä tutkimuksessa mitataan?
Ensisijaiset tulostoimenpiteet
Tulosmittaus |
Aikaikkuna |
---|---|
Weight Loss
Aikaikkuna: 8 weeks
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8 weeks
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Toissijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
---|---|---|
Dietary Intake
Aikaikkuna: 8 weeks
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Changes in dietary intake will be measured using 2 days of 24-hour dietary recalls
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8 weeks
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Yhteistyökumppanit ja tutkijat
Sponsori
Tutkijat
- Päätutkija: Brie Turner-McGrievy, PhD, MS, RD, University of South Carolina
Julkaisuja ja hyödyllisiä linkkejä
Opintojen ennätyspäivät
Opi tärkeimmät päivämäärät
Opiskelun aloitus
Ensisijainen valmistuminen (Todellinen)
Opintojen valmistuminen (Todellinen)
Opintoihin ilmoittautumispäivät
Ensimmäinen lähetetty
Ensimmäinen toimitettu, joka täytti QC-kriteerit
Ensimmäinen Lähetetty (Arvio)
Tutkimustietojen päivitykset
Viimeisin päivitys julkaistu (Todellinen)
Viimeisin lähetetty päivitys, joka täytti QC-kriteerit
Viimeksi vahvistettu
Lisää tietoa
Tähän tutkimukseen liittyvät termit
Avainsanat
Muita asiaankuuluvia MeSH-ehtoja
Muut tutkimustunnusnumerot
- Pro00021116
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