Investigation Study on Older People's Willingness to Use Webcast Exercise Guidance: Based on the UTAUT Model and the Perceived Risk Theory postprint

Abstract: Background　Previous studies on "internet+health management" for the elderly mainly focused on the willingness to use mobile health applications，with less attention to the webcast exercise guidance. Objective　Based on the unified theory of acceptance and use of technology（UTAUT）model and the perceived risk theory，we investigated the older people's willingness to use webcast exercise guidance. Methods　From April to August 2022，a convenience sampling method was used to select older people visiting the Fangzhuang Community Health Service Center in Fengtai District，Beijing， as the subjects，and a self-designed questionnaire was conducted face-to-face. Results　A total of 390 questionnaires were distributed，and 376 valid questionnaires were collected，with a valid recovery rate of 96.41%（376/390）. The fit index of the modified UTAUT model was better than the acceptable standards，indicating a good fit. The structural equation model test results showed that，performance experience（β=0.424），effort experience（β=0.325），social influence（β=0.596）， and facilitating condition（β=0.204）had a positive impact on the elderly's willingness to use webcast exercise guidance， respectively，while perceived risk（β=-0.634）had a negative impact（P<0.001）. Conclusion　Based on the UTAUT model and the perceived risk theory，performance experience，effort experience，social influence，and facilitating condition all positively affect the elderly's willingness to use webcast exercise guidance，while perceived risk negatively affects the elderly's willingness to use webcast exercise guidance.