Table 1.

Facebook interaction coding definitions

Code	Definition
Companionship social support	Partnership assistance that suggests “we participate together”
Esteem social support	Esteem information provision that suggests “you are good”
Informational social support	Knowledge assistance that suggests “you should know”
Encouragement social support	Encouragement information that suggests “you should start or continue exercise activities”
Modeling	Descriptions of performed exercise
Exercise support request	Requests for exercise-related support
Exercise endorsement	Endorsement of specific exercise types
Exercise barriers	Information about barriers to participating in exercise
Exercise facilitators	Information about facilitators to participating in exercise
Positive exercise consequences	Descriptions of the positive consequences of exercise
Negative exercise consequences	Descriptions of the negative consequences of exercise
Exercise failure	Descriptions of failing to exercise
Exercise success	Descriptions of successfully exercising
Exercise motivation	Descriptions of motivations to exercise
Sedentary relapse	Descriptions of starting exercise after a period of inactivity