{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T03:58:54Z","timestamp":1789617534099,"version":"build-2803163510"},"reference-count":71,"publisher":"Public Library of Science (PLoS)","issue":"3","license":[{"start":{"date-parts":[[2025,3,26]],"date-time":"2025-03-26T00:00:00Z","timestamp":1742947200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100009479","name":"Kungl. Vetenskaps- och Vitterhets-Samh\u00e4llet i G\u00f6teborg","doi-asserted-by":"publisher","award":["2019-01005"],"award-info":[{"award-number":["2019-01005"]}],"id":[{"id":"10.13039\/100009479","id-type":"DOI","asserted-by":"publisher"}]},{"name":"S\u00e4rskild satsnig","award":["FS 2.1.6-849-209"],"award-info":[{"award-number":["FS 2.1.6-849-209"]}]},{"DOI":"10.13039\/501100004063","name":"Knut och Alice Wallenbergs Stiftelse","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100004063","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Alf"}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS ONE"],"abstract":"<jats:sec id=\"sec001\">\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Behaviour-based physical intensity evaluation requires rigorous calibration before application in long-term recordings of children\u2019s sleep\/activity patterns. This study aimed at (i) calibrating activity counts of motor behaviour measured simultaneously with MotionWatch 8 (MW8) and ActiGraph (GT3X) in 3-year-old children, (ii) documenting movement intensities in 30s-epochs at wrist\/hip positions, and (iii) evaluating the accuracy of cut-off agreements between different behavioural activities.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"sec002\">\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Thirty 3-year-old children of the NorthPop cohort performed six directed behavioural activities individually, each for 8\u201310 minutes while wearing two pairs of devices at hip and wrist position. These naturally-occurring behaviours were aligned to movement intensities from \u2018motionless\u2019 (watching cartoons) and \u2018sedentary\u2019 (recumbent story listening, sit and handcraft) to \u2018light activity\u2019 (floor play with toys), \u2018moderate activity\u2019 (engaging in a brisk walk) and \u2018vigorous activity (a sprinting game). Time-keeping was ensured using direct observation by an observer. Receiver-Operating-Curve classification was applied to determine activity thresholds and to assign two composite movement classes.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"sec003\">\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Activity counts of MW8 and GT3X pairs of wrist-worn (rho =\u2009 0.94) and hip-worn (rho =\u2009 0.90) devices correlated significantly (p &lt;\u2009 0.001). Activity counts at hip position were significantly lower compared to those at the wrist position (p &lt;\u2009 0.001), irrespective of device type. Sprinting, floorball\/walk and floorplay assigned as \u2018physically\n                      <jats:italic>mobile\u2019<\/jats:italic>\n                      classes achieved outstanding accuracy (AUC &gt;\u20090.9) and two sedentary and a motionless activities assigned into \u2018physically\n                      <jats:italic>stationary\u2019<\/jats:italic>\n                      classes achieved excellent accuracy (AUC &gt;\u20090.8).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"sec004\">\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>This calibration provides useful cut-offs for physical activity levels of preschool children. Contextual information of behaviour is advantageous over intensity classifications only, because interventions will focus on behaviour-allocated time to reduce a sedentary lifestyle. Our comparative calibration is one step forward to behaviour-based movement guidelines for 3-year-old children.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1371\/journal.pone.0316747","type":"journal-article","created":{"date-parts":[[2025,3,26]],"date-time":"2025-03-26T16:26:50Z","timestamp":1743006410000},"page":"e0316747","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":2,"title":["Behaviour-based movement cut-off points in 3-year old children comparing wrist- with hip-worn actigraphs MW8 and 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E.","family":"West","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Magnus","family":"Domell\u00f6f","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2480-3329","authenticated-orcid":true,"given":"Katharina","family":"Wulff","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"340","published-online":{"date-parts":[[2025,3,26]]},"reference":[{"issue":"24","key":"pone.0316747.ref001","doi-asserted-by":"crossref","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":"FC Bull","year":"2020","journal-title":"Br J Sports 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