{
  "abstract": "Background: Children’s sedentary behavior is a major public health priority. While school-based programs are common, research must explore more effective approaches using robust theoretical frameworks. The CIPRES cluster-randomized controlled trial evaluated a 6-week multi-component school-based intervention combining the Socio-Ecological perspective and Trans-Contextual Model to reduce children’s sedentary time (ST) and increase moderate-to-vigorous physical activity (MVPA). Methods: Four French municipalities were cluster-randomized to either the CIPRES or Control group. Participants were children in 3rd and 4th grades. The intervention was multilevel, using co-constructed activity booklets to target school, after-school, and home settings to reduce ST. Activities were driven by TCM principles. Device-based ST and MVPA were assessed via 7-day accelerometry (accelerometers GT3X+) at baseline and post-intervention. Intervention effects and the moderating role of the Ecological Deprivation Index were analyzed using multiple constrained linear mixed models on three distinct periods (entire week, after-school and non-school days). Results: A total of 543 children (49.2% girls; mean age 9.2 years; 76.2% highly deprived) participated. The intervention yielded significant group*time interaction effects over the whole week, preventing the increase in relative ST ( β = −1.2 percentage points [pp], p = 0.033) and improving relative MVPA ( β = +0.7 pp., p = 0.034) in the CIPRES group. These effects were primarily driven by the after-school period (relative ST: β = −2.5 pp., p = 0.002; relative MVPA: β = +1.4 pp., p = 0.003). No significant intervention effects were observed during non-school days. Crucially, deprivation level significantly moderated efficacy during the after-school period: the intervention significantly decreased ST and increased MVPA primarily among highly deprived participants, while slightly deprived participants exhibited behavioral deterioration. Conclusion: The theory-based CIPRES intervention effectively curbed the weekly accumulation of ST, driven by improvements during the after-school period. By predominantly benefiting highly deprived youth, it offers a promising strategy to reduce social health inequalities, though further strategies are required to effectively alter routines during non-school days.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 8,
  "authors": [
    {
      "name": "Steven Laujac"
    },
    {
      "name": "Olivier Gavarry"
    },
    {
      "name": "Sophie Lafond"
    },
    {
      "name": "Josselin Franceschi"
    },
    {
      "name": "Axel Rozand"
    },
    {
      "name": "Laurence Pallier"
    },
    {
      "name": "Cyrille Delpierre"
    },
    {
      "name": "Marion Carayol"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/bz6xkh1x9r4p3.bib",
  "cited_by": 0,
  "doi": "10.3389/fpubh.2026.1839833",
  "fulltext_url": null,
  "id": "bz6xkh1x9r4p3",
  "issns": [
    "2296-2565",
    "2296-2565"
  ],
  "landing_url": "https://hal.science/hal-05742774v1",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.sdv"
    ],
    [
      "hal",
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    [
      "openalex",
      "2737|Physical Activity and Health"
    ]
  ],
  "openalex": "W7164815268",
  "pdf_url": "https://hal.science/hal-05742774/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-06-15",
  "publisher": "Frontiers Media S.A.",
  "ris": "https://research.draconitic.com/paper/bz6xkh1x9r4p3.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:31Z",
      "native_id": "hal-05742774",
      "source": "hal",
      "url": "https://hal.science/hal-05742774v1"
    }
  ],
  "subjects": [
    {
      "field": "biology",
      "origin": "hal:0.sdv",
      "subfield": "general"
    },
    {
      "field": "medicine",
      "origin": "hal:1.sdv.spee",
      "subfield": "epidemiology-public-health"
    }
  ],
  "title": "A multilevel school-based intervention on sedentary time in children: effectiveness and socioeconomic moderation results from the CIPRES cluster-RCT",
  "title_text": "A multilevel school-based intervention on sedentary time in children: effectiveness and socioeconomic moderation results from the CIPRES cluster-RCT",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:31Z",
  "url": "https://research.draconitic.com/paper/bz6xkh1x9r4p3",
  "venue": "Frontiers in Public Health",
  "versions": []
}