The Comparison of a Technology-Based System and an In-Person Behavioral Weight Loss Intervention
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Fase 2
Kontakter og lokationer
Studiesteder
-
-
Pennsylvania
-
Pittsburgh, Pennsylvania, Forenede Stater, 15260
- University of Pittsburgh
-
-
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- ages of 21-55 years
- Body mass index (BMI) between 25-39.9 kg/m2
Exclusion Criteria:
- Currently pregnant, pregnant in the last 6 months, or plan on becoming pregnant in the next 6 months.
- Currently participating in regular exercise for over 60 minutes/week.
- Taking any medications that affect body weight or metabolism (e.g. synthroid).
- Have any physical limitations that would prevent exercise.
- Currently being treated for coronary heart disease, diabetes mellitus, hypertension, or cancer.
- Have a history of myocardial infarction or other heart-related surgeries.
- Have a resting systolic blood pressure > 150 mmHg or diastolic blood pressure of > 100 mmHg or currently taking any medications that affect blood pressure or heart rate (e.g. beta blockers).
- Currently enrolled in a commercial weight loss program, participating in another weight loss study, or in a weight loss study in the last 12 months.
- Have lost > 5% of current body weight in the past 6 months.
- Currently being treated for any psychological problems or taking any psychotropic medication.
- Currently do not have access to a computer and the Internet that can be used for this study. This requires a PC computer, the ability to load software for the technology system, an existing internet connection provided by the participant, and a dedicated USB port to allow the armband from the technology system to be connected to the computer for the download of information.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Ingen (Åben etiket)
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
|
Eksperimentel: Standard weight loss intervention
|
In-person weight loss sessions, dietary intake prescription of 1200-1500 kcal per day, exercise progressing to 300 minutes per week.
|
|
Eksperimentel: Standard weight loss intervention plus technology
|
In-person weight loss sessions, dietary intake prescription of 1200-1500 kcal per day, exercise progressing to 300 minutes per week, plus technology to provide real-time feedback on energy expenditure, plus a website to log dietary intake.
|
|
Eksperimentel: Technology only
|
One intervention telephone call per month, dietary intake prescription of 1200-1500 kcal per day, exercise progressing to 300 minutes per week, plus technology to provide real-time feedback on energy expenditure, plus a website to log dietary intake.
|
Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
weight
Tidsramme: change from 0 to 6 months
|
Body weight will be assessed on a digital scale to assess change in body weight over the intervention period.
|
change from 0 to 6 months
|
Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
cardiorespiratory fitness
Tidsramme: 0, 6, 12, months
|
A graded exercise test on a treadmill along with indirect calorimetry will be used to measure cardiorespiratory fitness.
This will provide a measure of oxygen consumption and metabolic equivalents of work at the time of test termination.
|
0, 6, 12, months
|
|
body composition
Tidsramme: 0, 6, 12 months
|
Body composition will be assessed using dual energy X-ray absorptiometry (DXA).
This will provide a measure of lean body mass, fat mass, bone mineral content, and percent body fat.
|
0, 6, 12 months
|
|
physical activity
Tidsramme: 0, 6, 12 months
|
A questionnaire and a portable device worn on the upper arm will be used to measure and quantify energy expenditure from physical activity.
|
0, 6, 12 months
|
|
dietary intake
Tidsramme: 0, 6, 12 months
|
A questionnaire will be used to assess self-reported food intake.
This will be used to estimate calories, dietary fat, protein, and carbohydrates consumed.
|
0, 6, 12 months
|
|
psychosocial and behavioral measures
Tidsramme: 0, 6, 12 months
|
Questionnaires will be used to assess self-efficacy for weight loss and physical activity, barriers to physical activity and weight loss, expected outcomes resulting from physical activity and weight loss, perceived body image, depressive symptomotology, weight history, dietary disinhibition and restraint, and behaviors typically related to weight loss (e.g., self-weighing, meal planning, etc.).
|
0, 6, 12 months
|
|
Weight change
Tidsramme: weight at 0, 6, and 12 months
|
Body weight measured on a digital scale
|
weight at 0, 6, and 12 months
|
Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Efterforskere
Efterforskere
- Studieleder: Steve Verba, MS, University of Pittsburgh
Datoer for undersøgelser
Studer store datoer
Studiestart
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Studieafslutning (Faktiske)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- PRO09040121
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