Table 1.

Post types with examples

Post types	Post definition with examples	Targeted social cognitive theory construct
Weight loss (Mondays)	Posts asking participations to discuss their weight loss progress. Example: “How has your weight loss been since last week? Up, down, or about the same?”	Self-control
Recipe	Posts sharing a recipe for their assigned diet with a link to the recipe. Example: “This makes for a great snack, sandwich spread, or pasta topping: (Link to recipe).”	Behavioral capability and observational learning (when links to videos of cooking demos were provided)
Nutrition study, science, or news	Posts sharing a nutrition fact or nutrition news item, such as results from a nutrition study or link to information on foods that contain vitamin B12. Example: “Here is a great list of plant-based sources of calcium. Ever added kale to a smoothie? (link to website)”	Situation
Poll	A poll that allowed participants to select an item from a list (vs. having to type in an answer). Example: “What’s the most challenging meal for you to prepare each day? Breakfast, Lunch, Dinner, or Snacks.”	Targeted various constructs but was included to mirror the questions counselors would ask of participants during face-to-face meetings
Suggestion	A post asking participants to share a tip to help other participants. Example: “Share with the group and help others. How have you dealt with a weight plateau (or gain) recently?”	Expectations Emotional coping response