Fig. 2From: Using opinion leaders to address intervention gaps in concussion prevention in youth sports: key concepts and foundational theorySessions included in Popular Opinion Leader (POL) intervention (content adapted from Kelly et al. 1991). The sessions provide opinion leaders with education related to the outcome of interest and provide training on how opinion leaders can have casual conversations with peers in their social networks about their personal endorsements of risk reduction related to the outcome of interestBack to article page