{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,23]],"date-time":"2026-09-23T07:01:20Z","timestamp":1790146880981,"version":"4.0.1"},"reference-count":39,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,9,23]],"date-time":"2026-09-23T00:00:00Z","timestamp":1790121600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Public Health"],"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>As digital life prevails among older adults, this study investigates how mobile social media functions affect their exercise identity and social-media-specific sedentary time.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Using the S-O-R framework, a dual-path model was tested with SEM (AMOS 20.0) on data from 452 older adults in China.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Overall, mobile social media functions were not significantly associated with exercise identity or social-media-specific sedentary time. However, specific functions showed divergent effects: information retrieval (\n                      <jats:italic>Z<\/jats:italic>\n                      =\u202f6.06, 95% CI [0.14, 0.27]), online guidance (\n                      <jats:italic>Z<\/jats:italic>\n                      =\u202f3.32, 95% CI [0.08, 0.57]), and social comparison (\n                      <jats:italic>Z<\/jats:italic>\n                      =\u202f2.44, 95% CI [0.05, 0.30]) positively predicted exercise identity, whereas video media and personalized algorithms negatively predicted exercise identity (\n                      <jats:italic>Z<\/jats:italic>\n                      =\u202f-1.32, 95% CI [\u22120.57, \u22120.04]) and positively predicted social-media-specific sedentary time (\n                      <jats:italic>Z<\/jats:italic>\n                      =\u202f2.42, 95% CI [0.17, 1.01]). Perceived value mediated the effects of attention and interaction (\n                      <jats:italic>Z<\/jats:italic>\n                      =\u202f2.56, 95% CI [0.009, 0.05]) and recording (\n                      <jats:italic>Z<\/jats:italic>\n                      =\u202f3.30, 95% CI [0.03, 0.12]) on exercise identity. Immersive experience mediated the effect of video media and personalized algorithms on social-media-specific sedentary time (\n                      <jats:italic>Z<\/jats:italic>\n                      =\u202f1.41, 95% CI [0.006, 0.19]).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Mobile social media exerts dual effects on older adults\u2019 exercise identity. Video media and personalized algorithms are key risk factors for social-media-specific sedentary time, while perceived value and immersive experience mediate distinct pathways.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.3389\/fpubh.2026.1902864","type":"journal-article","created":{"date-parts":[[2026,9,23]],"date-time":"2026-09-23T06:16:50Z","timestamp":1790144210000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["A double-edged sword: unpacking the functional heterogeneity of mobile social media use and its differential associations with exercise identity and social-media-specific sedentary time among older adults"],"prefix":"10.3389","volume":"14","author":[{"given":"Ningning","family":"Liu","sequence":"first","affiliation":[{"name":"School of Basic Medical Sciences, Jining Medical University","place":["Jining, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guofeng","family":"Zhang","sequence":"additional","affiliation":[{"name":"Jining Polytechnic","place":["Jining, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaoyuan","family":"Han","sequence":"additional","affiliation":[{"name":"Faculty of Psychology, Southwest University","place":["Chongqing, China"]},{"name":"Key Laboratory of Cognition and Personality, Ministry of Education","place":["Chongqing, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ning","family":"Gai","sequence":"additional","affiliation":[{"name":"School of Basic Medical Sciences, Jining Medical University","place":["Jining, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuan","family":"Gao","sequence":"additional","affiliation":[{"name":"Department of Bone and Joint, The First People's Hospital of Jining City","place":["Jining, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenjun","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Basic Medical Sciences, Jining Medical University","place":["Jining, China"]},{"name":"Weifang Nursing Vocational College","place":["Qingzhou, Shandong, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xue","family":"Yao","sequence":"additional","affiliation":[{"name":"School of Basic Medical Sciences, Jining Medical University","place":["Jining, China"]},{"name":"School of Public Health, Shandong Medical and Pharmaceutical University","place":["Yantai, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2026,9,23]]},"reference":[{"key":"ref1","author":"Lam","year":"2025"},{"key":"ref2","first-page":"4180","article-title":"Searching for the Global Audience: A Comparative, Multiple-Method Analysis of a Global Trending Topic on Twitter.","volume-title":"International Journal of Communication","author":"Girginova","year":"2020"},{"key":"ref3","doi-asserted-by":"publisher","first-page":"1580936","DOI":"10.3389\/fpsyg.2025.1580936","article-title":"Digital interaction and active aging: the impact of social media use on physical activity behavior mediated by social capital and self-efficacy","volume":"16","author":"Liu","year":"2025","journal-title":"Front Psychol"},{"key":"ref4","doi-asserted-by":"publisher","first-page":"315","DOI":"10.1007\/s10209-021-00845-9","article-title":"Influences of time perspectives and perceived values on continuance intention to engage in social media amongst older adults for healthcare-related purposes","volume":"22","author":"Lai","year":"2023","journal-title":"Universal Access Inf Soc"},{"key":"ref5","doi-asserted-by":"publisher","first-page":"41","DOI":"10.1080\/10447318.2025.2498480","article-title":"How do social media affordances influence perceived value and short video users' engagement behavior: a comparison between young and senior group","volume":"24","author":"Ma","year":"2025","journal-title":"Int J Hum-Comput Interact"},{"key":"ref6","volume-title":"Flow on Social Media? 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