{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,28]],"date-time":"2026-10-28T19:31:17Z","timestamp":1793215877992,"version":"4.5.0"},"reference-count":33,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2025,10,24]],"date-time":"2025-10-24T00:00:00Z","timestamp":1761264000000},"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. Behav. Neurosci."],"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Physical activity is linked to mental health, yet the dose\u2013response shape remains debated.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>In a cross-sectional sample of Chinese university students, 820 participants (mean age 21.5 years; 51.8% women) wore wrist accelerometers for 7 days. Subjective well-being (SWB) was measured with the WHO-5 (0\u2013100). Restricted cubic spline models adjusted for age, sex, sleep quality, perceived stress, and socioeconomic status. Sensitivity analyses included quadratic and segmented models, trimming\/winsorization, and E-value assessment. Peaks\/plateaus were estimated via the delta method and bootstrap-BCa confidence intervals.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>The steps\u2013SWB association was non-linear (overall p&amp;lt;0.05). SWB rose steeply up to ~8,650 steps\/day and then leveled off, with a statistical plateau near ~19,300 steps\/day (bootstrap-BCa 95% CI: 7,997\u201317,896; delta-method 95% CI: 9,394\u201314,462). No contrast versus 4,000 steps\/day exceeded the prespecified minimal clinically important difference (MCID=10 points). Findings were consistent across specifications; right-tail precision was limited due to few very high step counts.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Among university students, higher daily steps are associated with better SWB up to ~8,000\u201312,000 steps\/day, beyond which benefits plateau with diminishing returns rather than harm. Results support range-based, progressive step guidance for student mental health. Please replace the current abstract with the structured IMRaD version provided above.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.3389\/fnbeh.2025.1693386","type":"journal-article","created":{"date-parts":[[2025,10,24]],"date-time":"2025-10-24T05:28:20Z","timestamp":1761283700000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":2,"title":["Inverted-U association between daily steps and WHO-5 in university students: non-linear modeling and robustness checks"],"prefix":"10.3389","volume":"19","author":[{"given":"Huakai","family":"Zhang","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shiguang","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yongchao","family":"Huang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lei","family":"Xiu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yan","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2025,10,24]]},"reference":[{"key":"ref1","doi-asserted-by":"publisher","first-page":"e52622","DOI":"10.2196\/52622","article-title":"The performance of wearable Ai in detecting stress among students: systematic review and Meta-analysis","volume":"26","author":"Abd-Alrazaq","year":"2024","journal-title":"J. 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