Background: Physical activity benefits older adults by protecting against morbidity and mortality. Wearable activity trackers (WATs) offer the opportunity to increase physical activity through continuous monitoring. We explore the nuances of WAT use and adoption among older adults using the transtheoretical model (TTM) of behavior change. Objective: We investigate older adults' perceptions and uses of WATs in different stages of WAT adoption. Method: Data for the research come from 10 focus groups. The first set of focus groups was with participants who had never used WATs. These focus groups included a WAT trial. Other focus groups (without the trial) were conducted with short-term, long-term, and former WAT users. Results: Older adults in different WAT use stages liked and wished for different WAT features, with long-term users being the most diverse and sophisticated users of WATs. Long-term users had developed a habit of WAT use while other participants needed to employ various encouragement strategies. Social support, with the focus on collaboration, was the primary motivator for long-term users, while short-term and former users focused on competition, and non-users engaged in vicarious WAT use experiences. Finally, longterm users were more likely to see benefits of WATs while other participants focused on obstacles related to WAT use. Conclusion: WATs may be an effective technology to encourage physical activity among older adults. Yet, WATs alone are not likely to be successful in changing behavior. Tailored approaches based on the TTM stage of change as well as motivations, facilitators, and specific WAT characteristics that are important for older adults will ensure successful longterm use.Keywords: older adults, wearable activity trackers, Transtheoretical Model, physical activity, focus groups
IntroductionThe focus of the present study is on exploring the nuances of adopting wearable activity trackers (WATs) in the population of adults who are 65 years of age or older using the transtheoretical model of behavior change (TTM) [1]. Academic and industry research has shown that the use of WATs can increase physical activity through continuous monitoring of activity progress [2][3]. Physical activity is beneficial for older adults due to its protective power against chronic diseases, many of which increase with older age [4].Despite the evident benefits of WATs for older generations, digital care today is more available to younger populations, leaving older adults on the periphery of the industry [5].
1As little as 7% of older adults owned an activity tracker in 2014 [6]. Only a few studies have been done to understand how and why older adults use WATs and why they choose not to use or stop using this wearable technology [7][8][9].Even if individuals decide to use WATs, it does not guarantee that they will continue using them on a long-term basis. One in three WAT users of all adult ages stop using the device within six months after purchase [10][11]. Length of use is correlated with age, with th...