The Effects of Source Credibility and Message Framing on Exercise Intentions,Behaviors, and Attitudes: An Integration of the Elaboration Likelihood Model and Prospect Theory1

This study examined the influence of source credibility and message framing on promoting physical exercise in university students. Participants were randomly assigned to reading a positively or negatively framed communication that was attributed to either a credible or a noncredible source. Exercise intentions and attitudes were measured immediately following the delivery of the communication and following a 2‐week delay. Exercise behavior was also measured following the delay. There were Source Frame interactions for the exercise intentions, exercise behaviors, and cognitive response/elaboration measures such that participants receiving a positively framed communication from a credible source elaborated more and reported more positive exercise intentions and behaviors than participants in the other conditions. The results of the present investigation indicate that it might be beneficial for health professionals to provide exercise‐related information stressing the benefits of participating in exercise, rather than the traditional fear appeals, to motivate clients to engage in regular physical exercise. Implications for future research are discussed.