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mDiet: A Text Message Intervention for Weight Loss

3 december 2014 bijgewerkt door: Kevin Patrick, MD, MS, University of California, San Diego
The purpose of the National Cancer Institute (NCI) funded randomized controlled study is to develop and evaluate a text message (SMS) based weight loss intervention to 309 overweight or moderately obese English and Spanish speaking adults ages 21 - 60. The investigators propose that participants randomized to the intervention arms will lose significantly more weight than those participants randomized to the control group.

Studie Overzicht

Toestand

Voltooid

Conditie

Interventie / Behandeling

Gedetailleerde beschrijving

The SMS based intervention will be developed through formative research including focus groups, cognitive interviews, and a pilot test of a Spanish version of mDIET. The focus groups will be conducted with both English and Spanish speaking men and women to 1) learn more about the content areas to be addressed in the intervention including physical activity and sedentary behaviors to expand on previous research; 2) learn more about assessing equivalence and compatibility in intervention messages in English and Spanish; 3) identify the most culturally and linguistically appropriate messages; 4) assess text message use; 5) identify factors that influence food and physical activity decisions; and 6) identify health messages that Latinos see as most understandable, credible, and persuasive, cognitive interviews, and a pilot test of a Spanish version of mDIET. The cognitive interviews will be conducted in Spanish and will help inform translation of study materials (text messages and measures) from English to Spanish. An 8-week pilot test of the Latino (Spanish language) mDIET will be conducted to ensure that the text messages and SMS system works as expected in terms of usability and acceptability.

The randomized controlled trial will be a 12-month intervention with 309 study participants. Participants will be randomized to one of three groups: SMS-only, SMS plus phone counseling, and a control group (Details of the study arms are discussed in another section). The goals of the intervention groups (SMS-only and SMS plus phone counseling) include: 5% weight loss, 500 k/cal per day deficit through reduced caloric intake and increased energy expenditure, 12,00 steps through the use of a pedometer, and a reduction in sedentary behaviors. Participants will receive daily text messages, self-monitoring tools, and brief health promotion printed or wed materials on physical activity, nutrition, or other weight loss related topics. Participants will complete physiological and survey measures at baseline, 6 months, and 12 months to assess weight (BMI), physical activity and diet behaviors, psychosocial behaviors, environmental factors, and exposure and satisfaction with the program.

Studietype

Ingrijpend

Inschrijving (Werkelijk)

318

Fase

  • Niet toepasbaar

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studie Locaties

  • Verenigde Staten
    • California
      • La Jolla, California, Verenigde Staten, 92037-0811
        • UCSD, Atkinson Hall, 3rd Floor

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

21 jaar tot 60 jaar (Volwassen)

Accepteert gezonde vrijwilligers

Nee

Geslachten die in aanmerking komen voor studie

Allemaal

Beschrijving

Inclusion Criteria:

  • Are 21 - 60 years
  • Are overweight or moderately obese with a BMI between 27.0 - 39.9
  • Have a cell phone that is capable of sending and receiving text and picture messages
  • Have a permanent residence in San Diego County and intend to stay over the entire study duration
  • Speak and read English or Spanish
  • Are willing to attend all (3) measurement assessments at the research office
  • Provide assent and have a legal guardian that will participate and provide parental permission/consent

Exclusion Criteria:

  • Have any of the following conditions: pulmonary, cardiovascular, or musculoskeletal problems that would limit the ability to comply with moderate intensity physical activity (i.e. brisk walking)
  • Are pregnant or intend to become pregnant during the study period
  • Have a history of substance abuse
  • Have a psychiatric disorder that would impair compliance with the study protocol
  • Are using weight loss medications or supplements
  • Are currently involved in another weight loss study or program

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Primair doel: Preventie
  • Toewijzing: Gerandomiseerd
  • Interventioneel model: Parallelle opdracht
  • Masker: Geen (open label)

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Experimenteel: SMS Only
The SMS only group will receive hints, tips, strategies, and questions related to weight loss behaviors, physical activity, nutrition, and motivation. The messages will be "pushed" to participants (i.e. no response needed) and "pulled" from participants (i.e. response is needed). The SMS only group will also receive a brief printed or web based outline on weight loss resources and information.
Gedragsmatig: mDiet
The goals of the intervention groups (SMS-only and SMS plus phone counseling) include: 5% weight loss, 500 k/cal per day deficit through reduced caloric intake and increased energy expenditure, 12,00 steps through the use of a pedometer, and a reduction in sedentary behaviors. Participants will receive daily "pushed" and "pulled" text messages, self-monitoring tools, and brief health promotion printed or wed materials on physical activity, nutrition, or other weight loss related topics.
Experimenteel: SMS + Phone Counseling
This group will receive hints, tips, strategies, and questions related to weight loss behaviors, physical activity, nutrition, and motivation. The messages will be "pushed" to participants (i.e. no response needed) and "pulled" from participants (i.e. response is needed). The group will also receive monthly counseling calls from a Health Coach to discuss barriers and solutions and will receive a brief printed or web based outline on weight loss resources and information.
Gedragsmatig: mDiet
The goals of the intervention groups (SMS-only and SMS plus phone counseling) include: 5% weight loss, 500 k/cal per day deficit through reduced caloric intake and increased energy expenditure, 12,00 steps through the use of a pedometer, and a reduction in sedentary behaviors. Participants will receive daily "pushed" and "pulled" text messages, self-monitoring tools, and brief health promotion printed or wed materials on physical activity, nutrition, or other weight loss related topics.
Geen tussenkomst: Control
The Control group will receive a binder with an attractive set of Standard Print Materials related to weight loss that is comparable to what one would receive from community resources such as libraries, magazines and national non-profit or governmental organizations such as 5-A Day, American Heart Association and the like.

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Weight Loss
Tijdsspanne: 12 months
To evaluate differences from baseline in percent weight loss at 12 months. We hypothesize that, compared to the usual care Standard Print condition differences in weight loss will be significant in both the SMS only (SMS = short message service or text message) and SMS+Phone intervention groups.
12 months

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Intervention Effects
Tijdsspanne: 12 months
To assess the intervention effects on weight loss by study group, diet, physical activity and sedentary behaviors, quality of life, and depression
12 months
Weight Loss Between Intervention Arms
Tijdsspanne: 12 months
To assess differences in weight loss between the 2 intervention arms (SMS only and SMS plus phone counseling)
12 months
Intervention Satisfaction and Exposure
Tijdsspanne: 12 months
To assess the level of satisfaction and use of the intervention components (SMS, phone counseling)
12 months

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

University of California, San Diego

Publicaties en nuttige links

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Algemene publicaties

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start

1 mei 2010

Primaire voltooiing (Werkelijk)

1 juni 2014

Studie voltooiing (Werkelijk)

1 juni 2014

Studieregistratiedata

Eerst ingediend

26 juli 2010

Eerst ingediend dat voldeed aan de QC-criteria

27 juli 2010

Eerst geplaatst (Schatting)

28 juli 2010

Updates van studierecords

Laatste update geplaatst (Schatting)

5 december 2014

Laatste update ingediend die voldeed aan QC-criteria

3 december 2014

Laatst geverifieerd

1 december 2014

Meer informatie

Termen gerelateerd aan deze studie

Trefwoorden

Aanvullende relevante MeSH-voorwaarden

Andere studie-ID-nummers

  • R01CA138730 (Subsidie/contract van de Amerikaanse NIH)

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