Table 1

Integration of theoretical concepts and intervention procedures
Theoretical Concepts Intervention Procedures1 Minimal Treatment Control WalkLink WalkLink+
Social Functions Educational materials X X X
• Encouragement/prompt -Receive same PA prescription.
-Receive walking “tips of the week” once weekly.
Social Functions Shape walking quantity and speed X X
• Modeling -Receive one-on-one in-person meeting. Program activities demonstrated and practiced with corrective feedback.
• Resources/assistance -Given pedometer, stopwatch, walking log, and program manual.
• Behavioral monitoring -Prompted once weekly to submit walking logs to research staff.
-Self-monitor walking quantity and speed using walking log, pedometer, and stopwatch.
• Behavioral norms -Walking quantity and speed compared to other program participants and past performance.
• Behavioral refinement -Given tailored weekly goals and graphical feedback to increase walking quantity and speed.
• Encouragement, praise
Environment and Social Structure and Functions Online WalkLink social network site X
• Setting/resource access/proximity, number, homogeneity -Promoted as a local program and participants informed they were living in same neighborhood as other participants.
• Network physical proximity -Prompted to attend four “meet the group” walks led by project staff in central neighborhood locations; participants asked to introduce themselves/talk to each participant.
• Virtual and in-person interaction modes -Access to WalkLink Facebook site during, and at least 1 year after program. Site activities include: posting profile, inviting family/friends/coworkers to join site, posting and joining local walking and PA events,discussion board, status updates, posting photos, “friending” other participants; received emails from site.
• Network centrality and transitivity
• Modeling/norms
• Encouragement, praise
• Resources, assistance, companionship -Eligible for entry into drawings for gift cards contingent on posting or joining walking/activity events on WalkLink site.
• Behavioral monitoring
Environment and Social Structure and Functions Shape social network-building activities across in-person settings and online WalkLink site X
• Behavioral monitoring -Self-monitor number of walks taken with others, and in-person community-based and Facebook-based social networking activities completed each week using checklist (Figure 3); submit networking activities once weekly to research staff.
• Setting/resource number, homogeneity
• Virtual and in-person interaction modes
• Network centrality and transitivity
• Behavioral norms -Participation in social networking activities compared to other program participants and past performance.
• Behavioral refinement -Given tailored weekly goals and graphical feedback to increase social networking activities.
• Encouragement, praise

1In Cohort 1, Ning Networks was used in the place of Facebook, and no incentives were given for online social networking. All other procedures were identical across all three cohorts.

Rovniak et al.

Rovniak et al. BMC Public Health 2013 13:753   doi:10.1186/1471-2458-13-753

Open Data