Vältä ja vastusta painonhallintastrategioita

WW is commercially-available weight management program focusing on diet, physical activity and mindset skills.

Participants assigned to all arms will receive 6 months of coaching (Zoom and/or email/text) and commercially-available weight management program focusing on diet, physical activity and mindset skills.

WW + modification of home food environment + online grocery shopping and delivery

Participants assigned to all arms will receive 6 months of coaching (Zoom and/or email/text) and commercially-available weight management program focusing on diet, physical activity and mindset skills.

Participants (Arms 2 & 4) will receive 6 months of coaching (Zoom and/or email/text) to modify their home food environment and alter cues to promote healthy food choices

WW + daily gamified inhibitory control training

Participants assigned to all arms will receive 6 months of coaching (Zoom and/or email/text) and commercially-available weight management program focusing on diet, physical activity and mindset skills.

Participants assigned to RESIST (Arms 3 & 4) will receive 6 months of coaching (Zoom and/or email/text) and gamified inhibitory control training.

WW + modification of home food environment + online grocery shopping and delivery + daily gamified inhibitory control training

Participants assigned to all arms will receive 6 months of coaching (Zoom and/or email/text) and commercially-available weight management program focusing on diet, physical activity and mindset skills.

Participants (Arms 2 & 4) will receive 6 months of coaching (Zoom and/or email/text) to modify their home food environment and alter cues to promote healthy food choices

Participants assigned to RESIST (Arms 3 & 4) will receive 6 months of coaching (Zoom and/or email/text) and gamified inhibitory control training.

BMI will be calculated by aggregating participants' self-reported height in meters and weight in kilograms at baseline, 6- and 12-months.

Gold standard interviewer-administered, multi-pass 24h-recalls (2 weekdays, 1 weekend day) will be used to measure diet quality. The Nutrition Data System for Research software (Nutrition Coordinating Center, University of Minnesota) is used to analyze the data. Investigators will use the 24h-recalls to assess changes in participants and household members' overall diet quality, based on adherence to the dietary guidelines for fruits and vegetables, servings of whole grains, red/processed meat, alcoholic beverages and food/beverages with added sugars.

Participants will self-report the availability of fruits and vegetables, servings of whole grains, red/processed meat, alcoholic beverages and food/beverages with added sugars in participants' homes. Responses will be scored as availability of healthy foods and beverages (e.g., fruits and vegetables), and availability of less healthy foods and beverages (e.g., processed meat, food/beverages with added sugars).

Participants have 1000ms to identify which direction a central arrow is pointing. Participants complete 64 congruent and incongruent randomly mixed trials. In congruent trials flanking stimuli points in the same direction as the central stimulus while in incongruent trials flanking stimuli points in the opposite direction.

Participants respond to a target shape (e.g. a white five-pointed star) and withhold a response from non-target shapes. In 20% of presented trials an inhibitory response will be required.

Participants categorize colored shapes by color or shape in three blocks. In the first two blocks, participants categorize shapes for 20 trials. In the third block, the categorization rules are randomly interleaved, and participants switch between rules. Participants have 1500ms to identify the stimulus and complete 96 trials with a 25% chance of rule-switching.

Participants will complete a questionnaire surveying: date of birth, sex, socioeconomic status (education level, household income, marital status, employment status), household composition (multigenerational, single, married, cohabitating, children) and race/ethnicity.

The Behavior Rating Inventory of Executive Function®- Adult Version (BRIEF-A) is a standardized measure of executive functions or self-regulation in everyday environment. The BRIEF-A assesses nine non-overlapping theoretically and empirically derived clinical scales: Inhibit, Self-Monitor, Plan/Organize, Shift, Initiate, Task Monitor, Emotional Control, Working Memory, and Organization of Materials. BRIEF-A is available in English and Spanish and can be computer-administered. Baseline score on the BRIEF will be tested as moderator of the relationships between study arms and outcomes.

Interactions such as tracked food, weight and activity in WW app will be passively recorded to operationalize engagement. A higher score indicates greater engagement.

Frequency of grocery delivery and dining out/take out will be recorded through participants' self-report of grocery delivery. Higher frequencies of grocery delivery indicates greater engagement.

Frequency/duration of gamified cognitive training will be passively recorded by the PolyRules! app. Greater frequency and duration indicate greater engagement.

The International Physical Activity Questionnaire (IPAQ) will be used to assess activity in 5 domains: job-related; transportation; housework, house maintenance, and caring for family; recreation, sport, and leisure-time physical activity; and time spent sitting. Data conferred by the WW program will also be leveraged, as participants track their activity (type, duration and intensity) via the WW mobile app or online website. Investigators will examine how engagement in exercise and daily activities moderate the relationships between study arms and outcomes.

The Dutch Eating Behavior Questionnaire (DEBQ) will be used to assess participants' approach to food and eating along three dimensions: emotional, external and restricted eating. There is a high degree of stability for each of these three eating behavior scales. Items on the DEBQ range from 1 (never) to 5 (very often), with higher scores indicating greater endorsement of the eating behavior.

The Food Security Questionnaire will be used to evaluate the availability of nutritious and safe foods for participants and their households at all times. The questionnaire will assess the household's ability to meet their food needs and will determine their placement on a food security continuum based on their responses to a series of questions. Researchers will analyze how food security impacts the relationships between different study arms and the outcomes.

Changes in health, medication, diet, and exercise among participants will be assessed via routine questionnaires administered at specific study time points (e.g., 6 and 12 months). The study team will monitor reported changes on an ongoing basis. Any data indicating potential new exclusion criteria (e.g., a diagnosis of cancer or other serious conditions) will be reviewed on a case-by-case basis. If the data meet the criteria for New Reportable Information (NRI), such as adverse events or single-subject exemptions, the appropriate reporting procedures will be followed according to IRB guidelines.

Main participants will be asked to complete a brief semi-structured participant experience interview at 6 months and at the conclusion of their intervention (either at withdrawal or 12-months). The interview will be conducted online via Zoom or MS Teams and last between 10-15 minutes. The questions asked will vary depending on the intervention arm.