Promoting Strength Training Among Baby Boomers: Message Framing Effects on Motivation and Behavior

Regular participation in strength training significantly enhances older adults’ physical and functional health, yet only 14% of adults over age 50 report engaging in strength training at least twice per week. Exercise messages about why and how older adults should engage in strength training could influence their perceptions of and participation in the behavior. This study was designed to promote strength training among adults aged 50–70 and to determine whether the message frame accompanying a brief workout would have an impact on participants’ motivation, self-efficacy, and/or physical activity behavior. Participants (N = 308) were randomly assigned to one of four message conditions: Easy Intrinsic, Hard Intrinsic, Easy Extrinsic, or Hard Extrinsic. Immediately after completing baseline measures of motivation and physical activity, participants received the recommended strength training workout and corresponding motivational message. They completed follow-up measures of motivation...