Sharing Digital Self-Monitoring Data With Others to Enhance Long-Term Weight Loss
NCT ID: NCT05180448
Last Updated: 2025-09-30
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
NA
322 participants
INTERVENTIONAL
2022-01-03
2025-07-30
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
SINGLE
Study Groups
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Coach Share On + Group Share On + Friend/Family Share On
Coach Share On
If an index participant is randomized to have Coach Share ON, the coach will have continuous access to objective, real-time, detailed device data, and address data directly in all individual interactions with index participants (groups, individual weigh-ins, phone calls, texts), conveying that they are closely monitoring progress.
Group Share On
If Group Share is ON, participants in a given LM group will view and respond to aspects of each other's self-monitoring device data in their small-group text messages. Each small group participant's data will be highlighted one day of the month, and content from the Group Share Off message library also will be sent.
Friend/Family Share On
Index participants who are randomized to have Friend/Family Share ON will give their friend or family member access to their self-monitoring data. Text messages sent by the program bot, which includes the index participant and friend/family member, will use a similar format as described in Group Share ON. The friend or family member will be trained to respond to data in ways that enhance the participant's motivation and self-regulation.
Behavioral Weight Loss Treatment
Standard Behavioral Weight Loss Treatment (remotely delivered)
Coach Share On + Group Share On + Friend/Family Share Off
Coach Share On
If an index participant is randomized to have Coach Share ON, the coach will have continuous access to objective, real-time, detailed device data, and address data directly in all individual interactions with index participants (groups, individual weigh-ins, phone calls, texts), conveying that they are closely monitoring progress.
Group Share On
If Group Share is ON, participants in a given LM group will view and respond to aspects of each other's self-monitoring device data in their small-group text messages. Each small group participant's data will be highlighted one day of the month, and content from the Group Share Off message library also will be sent.
Friend/Family Share Off
If an index participant is randomized to Friend/Family Share OFF, the text messages from the bot will prompt the participant and friend/family member to communicate about the LM program; those messages will be standardized, except for names, and will not be tailored to index participant progress. Index participants will be instructed to refrain from sharing any device data with friends or family members.
Behavioral Weight Loss Treatment
Standard Behavioral Weight Loss Treatment (remotely delivered)
Coach Share On + Group Share Off + Friend/Family Share On
Coach Share On
If an index participant is randomized to have Coach Share ON, the coach will have continuous access to objective, real-time, detailed device data, and address data directly in all individual interactions with index participants (groups, individual weigh-ins, phone calls, texts), conveying that they are closely monitoring progress.
Friend/Family Share On
Index participants who are randomized to have Friend/Family Share ON will give their friend or family member access to their self-monitoring data. Text messages sent by the program bot, which includes the index participant and friend/family member, will use a similar format as described in Group Share ON. The friend or family member will be trained to respond to data in ways that enhance the participant's motivation and self-regulation.
Group Share Off
Among index participants randomized to have Group Share OFF, supportive accountability will not be the target of participant interactions and no data will be shared with LM program peers. Instead, once weekly prompts for small group text exchanges will encourage index participants to provide social support (primarily of the informational type) to each other. Index participants will be explicitly told that they should not include information on goal progress such as weight change or minutes of PA.
Behavioral Weight Loss Treatment
Standard Behavioral Weight Loss Treatment (remotely delivered)
Coach Share On + Group Share Off + Group Share Off
Coach Share On
If an index participant is randomized to have Coach Share ON, the coach will have continuous access to objective, real-time, detailed device data, and address data directly in all individual interactions with index participants (groups, individual weigh-ins, phone calls, texts), conveying that they are closely monitoring progress.
Group Share Off
Among index participants randomized to have Group Share OFF, supportive accountability will not be the target of participant interactions and no data will be shared with LM program peers. Instead, once weekly prompts for small group text exchanges will encourage index participants to provide social support (primarily of the informational type) to each other. Index participants will be explicitly told that they should not include information on goal progress such as weight change or minutes of PA.
Friend/Family Share Off
If an index participant is randomized to Friend/Family Share OFF, the text messages from the bot will prompt the participant and friend/family member to communicate about the LM program; those messages will be standardized, except for names, and will not be tailored to index participant progress. Index participants will be instructed to refrain from sharing any device data with friends or family members.
Behavioral Weight Loss Treatment
Standard Behavioral Weight Loss Treatment (remotely delivered)
Coach Share Off + Group Share On + Friend/Family Share On
Group Share On
If Group Share is ON, participants in a given LM group will view and respond to aspects of each other's self-monitoring device data in their small-group text messages. Each small group participant's data will be highlighted one day of the month, and content from the Group Share Off message library also will be sent.
Friend/Family Share On
Index participants who are randomized to have Friend/Family Share ON will give their friend or family member access to their self-monitoring data. Text messages sent by the program bot, which includes the index participant and friend/family member, will use a similar format as described in Group Share ON. The friend or family member will be trained to respond to data in ways that enhance the participant's motivation and self-regulation.
Coach Share Off
Among index participants who are randomized to have Coach Share OFF, the coach will have no access to their device data. Index participants will be explicitly told their coach does not have data access. During groups and phone calls, the participant will self-report progress, and goal setting will be based on that self-report. Text messages from the coach will be personalized in the OFF condition, as they are when coach data sharing is ON, though these messages will not be informed by device data. Instead, text messages will provide a reminder of key goals and strategies discussed in the previous phone call and provide encouragement for participant efforts.
Behavioral Weight Loss Treatment
Standard Behavioral Weight Loss Treatment (remotely delivered)
Coach Share Off + Group Share On + Friend/Family Share Off
Group Share On
If Group Share is ON, participants in a given LM group will view and respond to aspects of each other's self-monitoring device data in their small-group text messages. Each small group participant's data will be highlighted one day of the month, and content from the Group Share Off message library also will be sent.
Coach Share Off
Among index participants who are randomized to have Coach Share OFF, the coach will have no access to their device data. Index participants will be explicitly told their coach does not have data access. During groups and phone calls, the participant will self-report progress, and goal setting will be based on that self-report. Text messages from the coach will be personalized in the OFF condition, as they are when coach data sharing is ON, though these messages will not be informed by device data. Instead, text messages will provide a reminder of key goals and strategies discussed in the previous phone call and provide encouragement for participant efforts.
Friend/Family Share Off
If an index participant is randomized to Friend/Family Share OFF, the text messages from the bot will prompt the participant and friend/family member to communicate about the LM program; those messages will be standardized, except for names, and will not be tailored to index participant progress. Index participants will be instructed to refrain from sharing any device data with friends or family members.
Behavioral Weight Loss Treatment
Standard Behavioral Weight Loss Treatment (remotely delivered)
Coach Share Off + Group Share Off + Friend/Family Share On
Friend/Family Share On
Index participants who are randomized to have Friend/Family Share ON will give their friend or family member access to their self-monitoring data. Text messages sent by the program bot, which includes the index participant and friend/family member, will use a similar format as described in Group Share ON. The friend or family member will be trained to respond to data in ways that enhance the participant's motivation and self-regulation.
Coach Share Off
Among index participants who are randomized to have Coach Share OFF, the coach will have no access to their device data. Index participants will be explicitly told their coach does not have data access. During groups and phone calls, the participant will self-report progress, and goal setting will be based on that self-report. Text messages from the coach will be personalized in the OFF condition, as they are when coach data sharing is ON, though these messages will not be informed by device data. Instead, text messages will provide a reminder of key goals and strategies discussed in the previous phone call and provide encouragement for participant efforts.
Group Share Off
Among index participants randomized to have Group Share OFF, supportive accountability will not be the target of participant interactions and no data will be shared with LM program peers. Instead, once weekly prompts for small group text exchanges will encourage index participants to provide social support (primarily of the informational type) to each other. Index participants will be explicitly told that they should not include information on goal progress such as weight change or minutes of PA.
Behavioral Weight Loss Treatment
Standard Behavioral Weight Loss Treatment (remotely delivered)
Coach Share Off + Group Share Off + Friend/Family Share Off
Coach Share Off
Among index participants who are randomized to have Coach Share OFF, the coach will have no access to their device data. Index participants will be explicitly told their coach does not have data access. During groups and phone calls, the participant will self-report progress, and goal setting will be based on that self-report. Text messages from the coach will be personalized in the OFF condition, as they are when coach data sharing is ON, though these messages will not be informed by device data. Instead, text messages will provide a reminder of key goals and strategies discussed in the previous phone call and provide encouragement for participant efforts.
Group Share Off
Among index participants randomized to have Group Share OFF, supportive accountability will not be the target of participant interactions and no data will be shared with LM program peers. Instead, once weekly prompts for small group text exchanges will encourage index participants to provide social support (primarily of the informational type) to each other. Index participants will be explicitly told that they should not include information on goal progress such as weight change or minutes of PA.
Friend/Family Share Off
If an index participant is randomized to Friend/Family Share OFF, the text messages from the bot will prompt the participant and friend/family member to communicate about the LM program; those messages will be standardized, except for names, and will not be tailored to index participant progress. Index participants will be instructed to refrain from sharing any device data with friends or family members.
Behavioral Weight Loss Treatment
Standard Behavioral Weight Loss Treatment (remotely delivered)
Interventions
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Coach Share On
If an index participant is randomized to have Coach Share ON, the coach will have continuous access to objective, real-time, detailed device data, and address data directly in all individual interactions with index participants (groups, individual weigh-ins, phone calls, texts), conveying that they are closely monitoring progress.
Group Share On
If Group Share is ON, participants in a given LM group will view and respond to aspects of each other's self-monitoring device data in their small-group text messages. Each small group participant's data will be highlighted one day of the month, and content from the Group Share Off message library also will be sent.
Friend/Family Share On
Index participants who are randomized to have Friend/Family Share ON will give their friend or family member access to their self-monitoring data. Text messages sent by the program bot, which includes the index participant and friend/family member, will use a similar format as described in Group Share ON. The friend or family member will be trained to respond to data in ways that enhance the participant's motivation and self-regulation.
Coach Share Off
Among index participants who are randomized to have Coach Share OFF, the coach will have no access to their device data. Index participants will be explicitly told their coach does not have data access. During groups and phone calls, the participant will self-report progress, and goal setting will be based on that self-report. Text messages from the coach will be personalized in the OFF condition, as they are when coach data sharing is ON, though these messages will not be informed by device data. Instead, text messages will provide a reminder of key goals and strategies discussed in the previous phone call and provide encouragement for participant efforts.
Group Share Off
Among index participants randomized to have Group Share OFF, supportive accountability will not be the target of participant interactions and no data will be shared with LM program peers. Instead, once weekly prompts for small group text exchanges will encourage index participants to provide social support (primarily of the informational type) to each other. Index participants will be explicitly told that they should not include information on goal progress such as weight change or minutes of PA.
Friend/Family Share Off
If an index participant is randomized to Friend/Family Share OFF, the text messages from the bot will prompt the participant and friend/family member to communicate about the LM program; those messages will be standardized, except for names, and will not be tailored to index participant progress. Index participants will be instructed to refrain from sharing any device data with friends or family members.
Behavioral Weight Loss Treatment
Standard Behavioral Weight Loss Treatment (remotely delivered)
Eligibility Criteria
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Inclusion Criteria
* Individuals must be adults (aged 18-70)
* Able to engage in physical activity (defined as walking two city blocks without stopping)
* Access and willingness to use a smartphone and internet
* Has one adult friend or family member who indicates willingness to serve in a support role
* Satisfactory completion of all enrollment procedures
* English Speaking
Exclusion Criteria
* Currently pregnant or breastfeeding, or planning to become pregnant in the next 24 months
* Use of insulin or a medication that can cause significant change in weight
* History of bariatric surgery
* Weight loss of greater than or equal to 5% in the previous 3 months
* Weight loss of greater than or equal to 10% in the past 3 years that is currently being maintained
18 Years
70 Years
ALL
Yes
Sponsors
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National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Drexel University
OTHER
Responsible Party
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Principal Investigators
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Meghan L Butryn, PhD
Role: PRINCIPAL_INVESTIGATOR
Drexel University
Locations
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Drexel University
Philadelphia, Pennsylvania, United States
Countries
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Provided Documents
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Document Type: Study Protocol and Informed Consent Form
Other Identifiers
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