Obesity Clinical Trial
— AGILEOfficial title:
Optimization of a mHealth Behavioral Weight Loss Intervention for Young Adults
Verified date | October 2023 |
Source | University of North Carolina, Chapel Hill |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
Mobile obesity interventions have the potential to reach a diverse population in need; however, while effective, have not resulted in weight losses obtained in in-person interventions. Newer digital approaches called Just-in-Time Adaptive Interventions (JITAI) that offer adaptive, personalized feedback 'when needed' and in 'real time' offer an opportunity to use digital health tools "just in time". This study seeks to identify the optimal components of a comprehensive weight loss JITAI that results in weight losses that meet or exceed those in existing remotely delivered interventions.
Status | Active, not recruiting |
Enrollment | 608 |
Est. completion date | May 2024 |
Est. primary completion date | May 2024 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years to 35 Years |
Eligibility | Inclusion Criteria: - body mass index (BMI) of 25-45 kg/m^2 - English-speaking and writing - own a smartphone with a data and text messaging plan - reporting engaging in less than 210 minutes/week of moderate-to-vigorous intensity activity - willing to be randomized to any levels of the factors Exclusion Criteria: - Type 1 diabetes or currently receiving medical treatment for Type 2 diabetes - 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 |
Country | Name | City | State |
---|---|---|---|
United States | University of North Carolina at Chapel Hill | Chapel Hill | North Carolina |
Lead Sponsor | Collaborator |
---|---|
University of North Carolina, Chapel Hill | National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) |
United States,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Weight | Absolute weight change from baseline to 6 months. Weight will be objectively measured on a digital scale in the participant's home. | Baseline, 6 months | |
Secondary | Weight | Absolute weight change from baseline to 3 months. Weight will be objectively measured on a digital scale in the participant's home. | Baseline, 3 months | |
Secondary | Achievement of 5% weight loss | Percent change in body weight will be calculated (6 month weight - baseline weight/100) and determined to be at or above 5% indicating a clinically significant change. | Baseline to 6 months | |
Secondary | Diet | Change in daily caloric intake from baseline to 3 and 6 months as measured using the self-administered National Cancer Institute's Automated Self- Administered 24-hour Recall (ASA-24), a 24-hour recall that is self-administered on a week day and a weekend day at each timepoint. | Baseline, 6 months | |
Secondary | Physical Activity | Change in physical activity from baseline to 3 and 6 months as measured using the Paffenbarger Physical Activity Questionnaire (PPAQ). The PPAQ assesses amount of planned and lifestyle associated physical activity performed during a typical week. The PPAQ consists of three components: (1) stair climbing, (2) walking, and (3) sports and recreation. Participants report the frequency and duration of physical activity in the past week. Scoring yields energy expenditure from physical activity per week (kcal/kg/week). Higher scores translate into greater energy expenditure per week (i.e.,better outcome). Range is 0 - no theoretical maximum. | Baseline,3 months, 6 months | |
Secondary | Sedentary Behavior score | Change in sedentary behavior from baseline to 3 and 6 months as measured using the 12- item Sedentary Behavior Questionnaire which asks respondents to indicate the number of hours they spend on a typical weekday and a typical weekend day doing each of six activities. The scale ranges from "none" to "6 or more hours" for each item. Higher values on the Sedentary Behavior Questionnaire indicate greater amount of time spent in sedentary behavior. Range is 0 to 24 hours. | Baseline, 3 months, 6 months | |
Secondary | Autonomy Support score | Change in autonomy support from baseline to 3 and 6 months. Items are adapted from the Health Care Climate Questionnaire, which is a measure of how the participant perceives support from a healthcare provider, to measure autonomy support from the program. The scale includes 15 items rated on a scale of 1 (strongly disagree) to 7 (strongly agree) (e.g., "I feel that [the program] has provided me choices and options.") Scores are calculated by averaging the individual item scores (with item 13 reverse-scored). Higher average scores represent a higher level of perceived autonomy support. | Baseline, 3 months, 6 months | |
Secondary | Competence for Diet and Physical Activity score | Change in perceived competence from baseline to 3 and 6 months as measured using the The Perceived Competence for Scale. The Scale measures perceived competence for diet (4 items) and physical activity (4 items). Items are rated on a 7-point Likert scale (1 = not at all true, 7 = very true), and include items such as "I feel confident in my ability to maintain a healthy diet." Scores are summed for the items in the subscale (diet and physical activity) and the range for each subscale is 4 - 28. Greater values indicate higher levels of perceived competence for engaging in positive diet and physical activity behaviors. Scores are summed for the items in the subscale (diet and physical activity) | Baseline, 3 months, 6 months | |
Secondary | Perceived Message Relevance score | Change in perceived message relevance from baseline to 3 and 6 months as measured using two items used in our previous work and adapted from previous studies of tailored messages. Participants were asked to rate how strongly they disagree or agree with the statements about messages being "written personally for me" and "applied to my life." Responses are on a 5-point scale from 1 (strongly disagree) to 5 (strongly agree). Higher values indicate that a participant perceives the messages received in the program are more relevant to them. | Baseline, 3 months, 6 months | |
Secondary | Treatment Self-Regulation score | Change in treatment self-regulation from baseline to 3 and 6 months as measured using the Treatment Self-Regulation Questionnaire (TSRQ). The TSRQ assesses autonomous and controlled motivation for making changes in diet (15 items) and physical activity (15 items). Examples item: "Because I feel that I want to take responsibility for my own health" answered on a scale of 1 (not at all true) to 7 (very true)." Calculating the scores for the sub-scales will consist of averaging the items on that subscale. They are: Autonomous Regulation: 2, 3, 7, 10, 13, 16, 18, 19 Controlled Regulation: 1, 4, 5, 6, 8, 9, 11, 12, 14, 15, 17. Responses to the items within the subscale are averaged with the range of scores being 1 to 7. Higher values on each subscale indicate greater levels of that type of motivation. |
Baseline, 3 months, 6 months | |
Secondary | Relatedness score | Change in relatedness from baseline to 3 and 6 months as measured with 3 items adapted from the 8-item Relatedness subscale of the Basic Need Satisfaction at Work Scale. Examples include "The messages demonstrate caring about me as a person" and are scored on a Likert scale from 1 (strongly disagree) to 7 (strongly agree). Responses are averaged with a range of 1 to 7. Higher scores indicate a higher level of perceived relatedness from the intervention messages. | Baseline, 3 months, 6 months | |
Secondary | Diet self-monitoring adherence | Number of days of complete dietary tracking summed over the 6-month study period. | Baseline to 6 months (daily) | |
Secondary | Weighing adherence | Number of days of self-weighing over the 6 month period. | Baseline to 6 months (daily) | |
Secondary | Physical activity self-monitoring adherence | Number of days of physical activity tracking over the 6 month period as measured by Fitbit tracker wear. | Baseline to 6 months (daily) |
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