Adaptive Goals and Interventions for Lifestyle Enhancement
NCT ID: NCT04922216
Last Updated: 2025-07-20
Study Results
Outcome measurements, participant flow, baseline characteristics, and adverse events have been published for this study.
View full resultsBasic Information
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COMPLETED
NA
759 participants
INTERVENTIONAL
2022-04-28
2024-07-01
Brief Summary
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Detailed Description
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Conditions
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Study Design
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RANDOMIZED
FACTORIAL
TREATMENT
DOUBLE
Study Groups
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Condition 1
Core + Standard Diet Monitoring + Daily Activity Goal + Fixed Timing + Standard Content + No Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Standard Diet Monitoring
Standard monitoring using smartphone tracking of all calorie intake.
Adaptive Activity Goals (Daily)
Physical activity goals that adapt once each day using the participants' data derived from activity tracker.
Message Decision Points (Fixed)
Message timing is fixed and evaluated at specific times each day to determine message eligibility.
Message Decision Rules (Standard)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors.
Message Choice (No)
Participant choice does not drive adaptation of 1) message type delivered or 2) lapse support provision
Condition 2
Core + Standard Diet Monitoring + Daily Activity Goal + Fixed Timing + Standard Content + Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Standard Diet Monitoring
Standard monitoring using smartphone tracking of all calorie intake.
Adaptive Activity Goals (Daily)
Physical activity goals that adapt once each day using the participants' data derived from activity tracker.
Message Decision Points (Fixed)
Message timing is fixed and evaluated at specific times each day to determine message eligibility.
Message Decision Rules (Standard)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors.
Message Choice (Yes)
Participant choice drives adaptation of 1) message type delivered and 2) lapse support provision.
Condition 3
Core + Standard Diet Monitoring + Daily Activity Goal + Fixed Timing + Adaptive Content + No Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Standard Diet Monitoring
Standard monitoring using smartphone tracking of all calorie intake.
Adaptive Activity Goals (Daily)
Physical activity goals that adapt once each day using the participants' data derived from activity tracker.
Message Decision Points (Fixed)
Message timing is fixed and evaluated at specific times each day to determine message eligibility.
Message Decision Rules (Adaptive)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors and overall progress.
Message Choice (No)
Participant choice does not drive adaptation of 1) message type delivered or 2) lapse support provision
Condition 4
Core + Standard Diet Monitoring + Daily Activity Goal + Fixed Timing + Adaptive Content + Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Standard Diet Monitoring
Standard monitoring using smartphone tracking of all calorie intake.
Adaptive Activity Goals (Daily)
Physical activity goals that adapt once each day using the participants' data derived from activity tracker.
Message Decision Points (Fixed)
Message timing is fixed and evaluated at specific times each day to determine message eligibility.
Message Decision Rules (Adaptive)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors and overall progress.
Message Choice (Yes)
Participant choice drives adaptation of 1) message type delivered and 2) lapse support provision.
Condition 5
Core+Standard Diet Monitoring+Daily Activity Goal+Adaptive Timing+Standard Content+No Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Standard Diet Monitoring
Standard monitoring using smartphone tracking of all calorie intake.
Adaptive Activity Goals (Daily)
Physical activity goals that adapt once each day using the participants' data derived from activity tracker.
Message Decision Points (Adaptive)
Message timing is adaptive and derived from individual user data to determine message eligibility.
Message Decision Rules (Standard)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors.
Message Choice (No)
Participant choice does not drive adaptation of 1) message type delivered or 2) lapse support provision
Condition 6
Core + Standard Diet Monitoring + Daily Activity Goal + Adaptive Timing + Standard Content + Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Standard Diet Monitoring
Standard monitoring using smartphone tracking of all calorie intake.
Adaptive Activity Goals (Daily)
Physical activity goals that adapt once each day using the participants' data derived from activity tracker.
Message Decision Points (Adaptive)
Message timing is adaptive and derived from individual user data to determine message eligibility.
Message Decision Rules (Standard)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors.
Message Choice (Yes)
Participant choice drives adaptation of 1) message type delivered and 2) lapse support provision.
Condition 7
Core+ Standard Diet Monitoring+ Daily Activity Goal+ Adaptive Timing+ Adaptive Content+ No Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Standard Diet Monitoring
Standard monitoring using smartphone tracking of all calorie intake.
Adaptive Activity Goals (Daily)
Physical activity goals that adapt once each day using the participants' data derived from activity tracker.
Message Decision Points (Adaptive)
Message timing is adaptive and derived from individual user data to determine message eligibility.
Message Decision Rules (Adaptive)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors and overall progress.
Message Choice (No)
Participant choice does not drive adaptation of 1) message type delivered or 2) lapse support provision
Condition 8
Core + Standard Diet Monitoring + Daily Activity Goal + Adaptive Timing + Adaptive Content + Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Standard Diet Monitoring
Standard monitoring using smartphone tracking of all calorie intake.
Adaptive Activity Goals (Daily)
Physical activity goals that adapt once each day using the participants' data derived from activity tracker.
Message Decision Points (Adaptive)
Message timing is adaptive and derived from individual user data to determine message eligibility.
Message Decision Rules (Adaptive)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors and overall progress.
Message Choice (Yes)
Participant choice drives adaptation of 1) message type delivered and 2) lapse support provision.
Condition 9
Core + Standard Diet Monitoring + Weekly Activity Goal + Fixed Timing + Standard Content + No Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Standard Diet Monitoring
Standard monitoring using smartphone tracking of all calorie intake.
Adaptive Activity Goals (Weekly)
Physical activity goals that adapt once each week using the participants' data derived from activity tracker.
Message Decision Points (Fixed)
Message timing is fixed and evaluated at specific times each day to determine message eligibility.
Message Decision Rules (Standard)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors.
Message Choice (No)
Participant choice does not drive adaptation of 1) message type delivered or 2) lapse support provision
Condition 10
Core + Standard Diet Monitoring + Weekly Activity Goal + Fixed Timing + Standard Content + Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Standard Diet Monitoring
Standard monitoring using smartphone tracking of all calorie intake.
Adaptive Activity Goals (Weekly)
Physical activity goals that adapt once each week using the participants' data derived from activity tracker.
Message Decision Points (Fixed)
Message timing is fixed and evaluated at specific times each day to determine message eligibility.
Message Decision Rules (Standard)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors.
Message Choice (Yes)
Participant choice drives adaptation of 1) message type delivered and 2) lapse support provision.
Condition 11
Core + Standard Diet Monitoring + Weekly Activity Goal + Fixed Timing + Adaptive Content + No Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Standard Diet Monitoring
Standard monitoring using smartphone tracking of all calorie intake.
Adaptive Activity Goals (Weekly)
Physical activity goals that adapt once each week using the participants' data derived from activity tracker.
Message Decision Points (Fixed)
Message timing is fixed and evaluated at specific times each day to determine message eligibility.
Message Decision Rules (Adaptive)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors and overall progress.
Message Choice (No)
Participant choice does not drive adaptation of 1) message type delivered or 2) lapse support provision
Condition 12
Core + Standard Diet Monitoring + Weekly Activity Goal + Fixed Timing + Adaptive Content + Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Standard Diet Monitoring
Standard monitoring using smartphone tracking of all calorie intake.
Adaptive Activity Goals (Weekly)
Physical activity goals that adapt once each week using the participants' data derived from activity tracker.
Message Decision Points (Fixed)
Message timing is fixed and evaluated at specific times each day to determine message eligibility.
Message Decision Rules (Adaptive)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors and overall progress.
Message Choice (Yes)
Participant choice drives adaptation of 1) message type delivered and 2) lapse support provision.
Condition 13
Core+Standard Diet Monitoring+Weekly Activity Goal+Adaptive Timing+Standard Content+No Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Standard Diet Monitoring
Standard monitoring using smartphone tracking of all calorie intake.
Adaptive Activity Goals (Weekly)
Physical activity goals that adapt once each week using the participants' data derived from activity tracker.
Message Decision Points (Adaptive)
Message timing is adaptive and derived from individual user data to determine message eligibility.
Message Decision Rules (Standard)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors.
Message Choice (No)
Participant choice does not drive adaptation of 1) message type delivered or 2) lapse support provision
Condition 14
Core + Standard Diet Monitoring + Weekly Activity Goal + Adaptive Timing + Standard Content + Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Standard Diet Monitoring
Standard monitoring using smartphone tracking of all calorie intake.
Adaptive Activity Goals (Weekly)
Physical activity goals that adapt once each week using the participants' data derived from activity tracker.
Message Decision Points (Adaptive)
Message timing is adaptive and derived from individual user data to determine message eligibility.
Message Decision Rules (Standard)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors.
Message Choice (Yes)
Participant choice drives adaptation of 1) message type delivered and 2) lapse support provision.
Condition 15
Core + Standard Diet Monitoring+ Weekly Activity Goal+ Adaptive Timing+ Adaptive Content+ No Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Standard Diet Monitoring
Standard monitoring using smartphone tracking of all calorie intake.
Adaptive Activity Goals (Weekly)
Physical activity goals that adapt once each week using the participants' data derived from activity tracker.
Message Decision Points (Adaptive)
Message timing is adaptive and derived from individual user data to determine message eligibility.
Message Decision Rules (Adaptive)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors and overall progress.
Message Choice (No)
Participant choice does not drive adaptation of 1) message type delivered or 2) lapse support provision
Condition 16
Core + Standard Diet Monitoring + Weekly Activity Goal + Adaptive Timing + Adaptive Content + Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Standard Diet Monitoring
Standard monitoring using smartphone tracking of all calorie intake.
Adaptive Activity Goals (Weekly)
Physical activity goals that adapt once each week using the participants' data derived from activity tracker.
Message Decision Points (Adaptive)
Message timing is adaptive and derived from individual user data to determine message eligibility.
Message Decision Rules (Adaptive)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors and overall progress.
Message Choice (Yes)
Participant choice drives adaptation of 1) message type delivered and 2) lapse support provision.
Condition 17
Core+ Simplified Diet Monitoring+ Daily Activity Goal+ Fixed Timing+ Standard Content+ No Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Simplified Diet Monitoring
Simplified diet monitoring using smartphone tracking of red foods using a traffic light approach.
Adaptive Activity Goals (Daily)
Physical activity goals that adapt once each day using the participants' data derived from activity tracker.
Message Decision Points (Fixed)
Message timing is fixed and evaluated at specific times each day to determine message eligibility.
Message Decision Rules (Standard)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors.
Message Choice (No)
Participant choice does not drive adaptation of 1) message type delivered or 2) lapse support provision
Condition 18
Core+ Simplified Diet Monitoring+ Daily Activity Goal+ Fixed Timing+ Standard Content+ Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Simplified Diet Monitoring
Simplified diet monitoring using smartphone tracking of red foods using a traffic light approach.
Adaptive Activity Goals (Daily)
Physical activity goals that adapt once each day using the participants' data derived from activity tracker.
Message Decision Points (Fixed)
Message timing is fixed and evaluated at specific times each day to determine message eligibility.
Message Decision Rules (Standard)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors.
Message Choice (Yes)
Participant choice drives adaptation of 1) message type delivered and 2) lapse support provision.
Condition 19
Core+ Simplified Diet Monitoring+ Daily Activity Goal+ Fixed Timing+ Adaptive Content+ No Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Simplified Diet Monitoring
Simplified diet monitoring using smartphone tracking of red foods using a traffic light approach.
Adaptive Activity Goals (Daily)
Physical activity goals that adapt once each day using the participants' data derived from activity tracker.
Message Decision Points (Fixed)
Message timing is fixed and evaluated at specific times each day to determine message eligibility.
Message Decision Rules (Adaptive)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors and overall progress.
Message Choice (No)
Participant choice does not drive adaptation of 1) message type delivered or 2) lapse support provision
Condition 20
Core + Simplified Diet Monitoring + Daily Activity Goal + Fixed Timing + Adaptive Content + Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Simplified Diet Monitoring
Simplified diet monitoring using smartphone tracking of red foods using a traffic light approach.
Adaptive Activity Goals (Daily)
Physical activity goals that adapt once each day using the participants' data derived from activity tracker.
Message Decision Points (Fixed)
Message timing is fixed and evaluated at specific times each day to determine message eligibility.
Message Decision Rules (Adaptive)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors and overall progress.
Message Choice (Yes)
Participant choice drives adaptation of 1) message type delivered and 2) lapse support provision.
Condition 21
Core+ Simplified Diet Monitoring+ Daily Activity Goal+ Adaptive Timing+ Standard Content+ No Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Simplified Diet Monitoring
Simplified diet monitoring using smartphone tracking of red foods using a traffic light approach.
Adaptive Activity Goals (Daily)
Physical activity goals that adapt once each day using the participants' data derived from activity tracker.
Message Decision Points (Adaptive)
Message timing is adaptive and derived from individual user data to determine message eligibility.
Message Decision Rules (Standard)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors.
Message Choice (No)
Participant choice does not drive adaptation of 1) message type delivered or 2) lapse support provision
Condition 22
Core+ Simplified Diet Monitoring+ Daily Activity Goal+ Adaptive Timing+ Standard Content+ Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Simplified Diet Monitoring
Simplified diet monitoring using smartphone tracking of red foods using a traffic light approach.
Adaptive Activity Goals (Daily)
Physical activity goals that adapt once each day using the participants' data derived from activity tracker.
Message Decision Points (Adaptive)
Message timing is adaptive and derived from individual user data to determine message eligibility.
Message Decision Rules (Standard)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors.
Message Choice (Yes)
Participant choice drives adaptation of 1) message type delivered and 2) lapse support provision.
Condition 23
Core+ Simplified Diet Monitoring+ Daily Activity Goal+ Adaptive Timing+ Adaptive Content+ No Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Simplified Diet Monitoring
Simplified diet monitoring using smartphone tracking of red foods using a traffic light approach.
Adaptive Activity Goals (Daily)
Physical activity goals that adapt once each day using the participants' data derived from activity tracker.
Message Decision Points (Adaptive)
Message timing is adaptive and derived from individual user data to determine message eligibility.
Message Decision Rules (Adaptive)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors and overall progress.
Message Choice (No)
Participant choice does not drive adaptation of 1) message type delivered or 2) lapse support provision
Condition 24
Core+ Simplified Diet Monitoring+ Daily Activity Goal+ Adaptive Timing+ Adaptive Content+ Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Simplified Diet Monitoring
Simplified diet monitoring using smartphone tracking of red foods using a traffic light approach.
Adaptive Activity Goals (Daily)
Physical activity goals that adapt once each day using the participants' data derived from activity tracker.
Message Decision Points (Adaptive)
Message timing is adaptive and derived from individual user data to determine message eligibility.
Message Decision Rules (Adaptive)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors and overall progress.
Message Choice (Yes)
Participant choice drives adaptation of 1) message type delivered and 2) lapse support provision.
Condition 25
Core+ Simplified Diet Monitoring+ Weekly Activity Goal+ Fixed Timing+ Standard Content+ No Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Simplified Diet Monitoring
Simplified diet monitoring using smartphone tracking of red foods using a traffic light approach.
Adaptive Activity Goals (Weekly)
Physical activity goals that adapt once each week using the participants' data derived from activity tracker.
Message Decision Points (Fixed)
Message timing is fixed and evaluated at specific times each day to determine message eligibility.
Message Decision Rules (Standard)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors.
Message Choice (No)
Participant choice does not drive adaptation of 1) message type delivered or 2) lapse support provision
Condition 26
Core + Simplified Diet Monitoring + Weekly Activity Goal + Fixed Timing + Standard Content + Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Simplified Diet Monitoring
Simplified diet monitoring using smartphone tracking of red foods using a traffic light approach.
Adaptive Activity Goals (Weekly)
Physical activity goals that adapt once each week using the participants' data derived from activity tracker.
Message Decision Points (Fixed)
Message timing is fixed and evaluated at specific times each day to determine message eligibility.
Message Decision Rules (Standard)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors.
Message Choice (Yes)
Participant choice drives adaptation of 1) message type delivered and 2) lapse support provision.
Condition 27
Core+ Simplified Diet Monitoring+ Weekly Activity Goal+ Fixed Timing+ Adaptive Content+ No Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Simplified Diet Monitoring
Simplified diet monitoring using smartphone tracking of red foods using a traffic light approach.
Adaptive Activity Goals (Weekly)
Physical activity goals that adapt once each week using the participants' data derived from activity tracker.
Message Decision Points (Fixed)
Message timing is fixed and evaluated at specific times each day to determine message eligibility.
Message Decision Rules (Adaptive)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors and overall progress.
Message Choice (No)
Participant choice does not drive adaptation of 1) message type delivered or 2) lapse support provision
Condition 28
Core + Simplified Diet Monitoring + Weekly Activity Goal + Fixed Timing + Adaptive Content + Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Simplified Diet Monitoring
Simplified diet monitoring using smartphone tracking of red foods using a traffic light approach.
Adaptive Activity Goals (Weekly)
Physical activity goals that adapt once each week using the participants' data derived from activity tracker.
Message Decision Points (Fixed)
Message timing is fixed and evaluated at specific times each day to determine message eligibility.
Message Decision Rules (Adaptive)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors and overall progress.
Message Choice (Yes)
Participant choice drives adaptation of 1) message type delivered and 2) lapse support provision.
Condition 29
Core+ Simplified Diet Monitoring+ Weekly Activity Goal+ Adaptive Timing+ Standard Content+ No Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Simplified Diet Monitoring
Simplified diet monitoring using smartphone tracking of red foods using a traffic light approach.
Adaptive Activity Goals (Weekly)
Physical activity goals that adapt once each week using the participants' data derived from activity tracker.
Message Decision Points (Adaptive)
Message timing is adaptive and derived from individual user data to determine message eligibility.
Message Decision Rules (Standard)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors.
Message Choice (No)
Participant choice does not drive adaptation of 1) message type delivered or 2) lapse support provision
Condition 30
Core+ Simplified Diet Monitoring+ Weekly Activity Goal+ Adaptive Timing+ Standard Content+ Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Simplified Diet Monitoring
Simplified diet monitoring using smartphone tracking of red foods using a traffic light approach.
Adaptive Activity Goals (Weekly)
Physical activity goals that adapt once each week using the participants' data derived from activity tracker.
Message Decision Points (Adaptive)
Message timing is adaptive and derived from individual user data to determine message eligibility.
Message Decision Rules (Standard)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors.
Message Choice (Yes)
Participant choice drives adaptation of 1) message type delivered and 2) lapse support provision.
Condition 31
Core+ Simplified Diet Monitoring+ Weekly Activity Goal+ Adaptive Timing+ Adaptive Content+ No Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Simplified Diet Monitoring
Simplified diet monitoring using smartphone tracking of red foods using a traffic light approach.
Adaptive Activity Goals (Weekly)
Physical activity goals that adapt once each week using the participants' data derived from activity tracker.
Message Decision Points (Adaptive)
Message timing is adaptive and derived from individual user data to determine message eligibility.
Message Decision Rules (Adaptive)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors and overall progress.
Message Choice (No)
Participant choice does not drive adaptation of 1) message type delivered or 2) lapse support provision
Condition 32
Core + Simplified Diet Monitoring + Weekly Activity Goal + Adaptive Timing + Adaptive Content+Choice
Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Simplified Diet Monitoring
Simplified diet monitoring using smartphone tracking of red foods using a traffic light approach.
Adaptive Activity Goals (Weekly)
Physical activity goals that adapt once each week using the participants' data derived from activity tracker.
Message Decision Points (Adaptive)
Message timing is adaptive and derived from individual user data to determine message eligibility.
Message Decision Rules (Adaptive)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors and overall progress.
Message Choice (Yes)
Participant choice drives adaptation of 1) message type delivered and 2) lapse support provision.
Interventions
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Core
Behavioral weight loss core includes behavioral lessons, activity tracker, daily self-weighing, weekly tailored feedback summary.
Standard Diet Monitoring
Standard monitoring using smartphone tracking of all calorie intake.
Simplified Diet Monitoring
Simplified diet monitoring using smartphone tracking of red foods using a traffic light approach.
Adaptive Activity Goals (Daily)
Physical activity goals that adapt once each day using the participants' data derived from activity tracker.
Adaptive Activity Goals (Weekly)
Physical activity goals that adapt once each week using the participants' data derived from activity tracker.
Message Decision Points (Fixed)
Message timing is fixed and evaluated at specific times each day to determine message eligibility.
Message Decision Points (Adaptive)
Message timing is adaptive and derived from individual user data to determine message eligibility.
Message Decision Rules (Standard)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors.
Message Decision Rules (Adaptive)
Decision rules to determine eligibility to receive just-in-time messages consider participant's recent behaviors and overall progress.
Message Choice (No)
Participant choice does not drive adaptation of 1) message type delivered or 2) lapse support provision
Message Choice (Yes)
Participant choice drives adaptation of 1) message type delivered and 2) lapse support provision.
Eligibility Criteria
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Inclusion Criteria
* English-speaking and writing
* own a smartphone with a data and text messaging plan
* willing to be randomized to any levels of the factors
Exclusion Criteria
* Other health problems which may influence the ability to walk for physical activity or be associated with unintentional weight change, including cancer treatment within the past 5 years or tuberculosis
* Report a heart condition, chest pain during periods of activity or rest, or loss of consciousness on the Physical Activity Readiness Questionnaire (PAR-Q; items 1-4)
* Lost 10 or more pounds (and kept it off) in the last 6 months
* Currently taking weight loss medications
* Report a past diagnosis of or current treatment for a DSM-V (Diagnostic and Statistical Manual 5) eating disorder (anorexia nervosa or bulimia nervosa)
* Currently pregnant, pregnant within the past 6 months, or planning to become pregnant within the next 6 months
* Hospitalization for depression or other psychiatric disorder within the past 12 months
* History of psychotic disorder or bipolar disorder
* Another member of the household is a participant or staff member on this trial
* Currently participating in a weight loss, nutrition or physical activity study or program or other study that would interfere with this study
18 Years
39 Years
ALL
No
Sponsors
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National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
University of North Carolina, Chapel Hill
OTHER
Responsible Party
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Principal Investigators
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Deborah F. Tate, PhD
Role: PRINCIPAL_INVESTIGATOR
University of North Carolina, Chapel Hill
Locations
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University of North Carolina at Chapel Hill
Chapel Hill, North Carolina, United States
Countries
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Provided Documents
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Document Type: Study Protocol and Statistical Analysis Plan
Document Type: Informed Consent Form
Other Identifiers
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20-0765
Identifier Type: -
Identifier Source: org_study_id
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