{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,26]],"date-time":"2026-10-26T17:27:27Z","timestamp":1793035647129,"version":"4.5.0"},"reference-count":53,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,7,27]],"date-time":"2026-07-27T00:00:00Z","timestamp":1785110400000},"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>Standalone digital behavior change interventions (DBCIs) are increasingly used to promote physical activity (PA), but their post-intervention durability remains unclear. This focused mini review with quantitative synthesis examined maintenance and attenuation of standalone DBCI effects on PA in adults.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>PubMed, Web of Science Core Collection, and SPORTDiscus were searched without date restrictions, with the final search conducted on 3 May 2026. Eligible studies were randomized controlled studies involving adults, standalone DBCIs targeting PA, a comparator not receiving the target structured DBCI, and PA outcomes assessed post-intervention and at \u22651 follow-up. Random-effects meta-analyses used Hedges\u2019 g, with the longest follow-up used for the primary maintenance analysis.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Seventeen studies involving 8,990 participants were included in the review, of which 13 contributed effect sizes to the primary quantitative synthesis. Standalone DBCIs showed a small, non-significant effect at the longest follow-up (\n                      <jats:italic>g<\/jats:italic>\n                      \u202f=\u202f0.13;\n                      <jats:italic>p<\/jats:italic>\n                      \u202f=\u202f0.066;\n                      <jats:italic>I<\/jats:italic>\n                      <jats:sup>2<\/jats:sup>\n                      \u202f=\u202f64.2%), with low-certainty evidence. Time-window analyses showed a small significant post-intervention effect (\n                      <jats:italic>g<\/jats:italic>\n                      \u202f=\u202f0.14;\n                      <jats:italic>p<\/jats:italic>\n                      \u202f=\u202f0.048), whereas follow-up effects were small and non-significant. Meta-regression showed no clear progressive attenuation.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Standalone DBCIs showed small positive post-intervention point estimates, but evidence remains insufficient to establish reliable maintenance after active support is reduced or withdrawn. Future studies should use repeated follow-ups and report engagement, continued tool access, and post-intervention support.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.3389\/fpubh.2026.1878053","type":"journal-article","created":{"date-parts":[[2026,7,27]],"date-time":"2026-07-27T05:41:15Z","timestamp":1785130875000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":1,"title":["Post-intervention durability of standalone digital behavior change interventions for physical activity in adults: a focused mini review and quantitative synthesis"],"prefix":"10.3389","volume":"14","author":[{"given":"Jian","family":"Zeng","sequence":"first","affiliation":[{"name":"Mianyang Teachers\u2019 College","place":["Mianyang, Sichuan, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hansen","family":"Li","sequence":"additional","affiliation":[{"name":"School of Physical Education, Sichuan Agricultural University","place":["Ya'an, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xing","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada","place":["Granada, Spain"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2026,7,27]]},"reference":[{"key":"ref1","doi-asserted-by":"publisher","first-page":"1451","DOI":"10.1136\/bjsports-2020-102955","article-title":"World Health Organization 2020 guidelines on physical activity and sedentary behaviour","volume":"54","author":"Bull","year":"2020","journal-title":"Br J Sports Med"},{"key":"ref2","doi-asserted-by":"publisher","first-page":"541","DOI":"10.1097\/HCO.0000000000000437","article-title":"Health benefits of physical activity: a systematic review of current systematic reviews","volume":"32","author":"Warburton","year":"2017","journal-title":"Curr Opin 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