{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,7]],"date-time":"2026-10-07T07:41:06Z","timestamp":1791358866891,"version":"4.3.1"},"reference-count":57,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2021,12,16]],"date-time":"2021-12-16T00:00:00Z","timestamp":1639612800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J intellect Disabil Res"],"published-print":{"date-parts":[[2022,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Adolescents and young adults with intellectual and developmental disabilities (IDD) have high rates of obesity and low levels of physical activity. This analysis examined changes in light, moderate\u2010to\u2010vigorous physical activity (MVPA) and sedentary time, and the association between changes in MVPA and weight loss in adolescents and young adults with IDD and overweight and obesity participating in a 6\u2010month multi\u2010component weight loss intervention.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Adolescents and young adults with IDD and overweight or obesity (body mass index\u00a0\u2265\u00a085 percentile, <jats:italic>n<\/jats:italic>\u00a0=\u00a0110, age ~16\u00a0years, 52.7% female) and a parent were randomised to one of three intervention groups: face\u2010to\u2010face delivery\/conventional reduced energy diet (<jats:italic>n<\/jats:italic>\u00a0=\u00a036), remote delivery (RD)\/conventional reduced energy diet (<jats:italic>n<\/jats:italic>\u00a0=\u00a039), or RD\/reduced energy enhanced stop light diet (eSLD) (<jats:italic>n<\/jats:italic>\u00a0=\u00a035.) Participants were asked to engage in 60\u00a0min\/day of MVPA on 5 or more days\/wk. Participants and a parent attended twice monthly education\/behavioural counselling sessions with a health educator to assist participants in complying with dietary and MVPA recommendations. Education\/counselling in the RD arms was delivered remotely using video conferencing, and self\u2010monitoring of MVPA and daily steps was completed using a wireless activity tracker. Education\/counselling in the face\u2010to\u2010face arm was delivered during home\u2010visits and self\u2010monitoring of MVPA and daily steps was completed by self\u2010report using paper tracking forms designed for individuals with IDD. MVPA, light activity, and sedentary time were assessed over 7\u00a0days at baseline and 6\u00a0months using a portable accelerometer (ActiGraph wGT3x\u2010BT).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Mixed modelling analysis completed using participants with valid accelerometer data (i.e. \u22654\u201310\u00a0h days) at baseline (<jats:italic>n<\/jats:italic>\u00a0=\u00a068) and 6\u00a0months (<jats:italic>n<\/jats:italic>\u00a0=\u00a030) revealed no significant changes in light, moderate\u2010 MVPA, or sedentary time across the 6\u2010month intervention (all <jats:italic>P<\/jats:italic>\u00a0&gt;\u00a00.05). Participants obtained 15.2\u00a0\u00b1\u00a021.5\u00a0min\/day of MVPA at baseline and 19.7\u00a0\u00b1\u00a019.7\u00a0min\/day at 6\u00a0months (<jats:italic>P<\/jats:italic>\u00a0=\u00a00.119). Mixed modelling indicated no significant effects of group (<jats:italic>P<\/jats:italic>\u00a0=\u00a00.79), time (<jats:italic>P<\/jats:italic>\u00a0=\u00a00.10), or group\u2010by\u2010time interaction (<jats:italic>P<\/jats:italic>\u00a0=\u00a00.21) on changes in MVPA from baseline to 6\u00a0months. Correlational analysis conducted on participants with valid accelerometer data at both baseline and 6\u00a0months (<jats:italic>n<\/jats:italic>\u00a0=\u00a024) revealed no significant associations between baseline sedentary time (<jats:italic>r<\/jats:italic>\u00a0=\u00a00.10, <jats:italic>P<\/jats:italic>\u00a0=\u00a00.40) and baseline MVPA (<jats:italic>r<\/jats:italic>\u00a0=\u00a0\u22120.22, <jats:italic>P<\/jats:italic>\u00a0=\u00a00.30) and change in MVPA across the 6\u2010month intervention. Additionally, attendance at education\/counselling sessions (<jats:italic>r<\/jats:italic>\u00a0=\u00a00.26, <jats:italic>P<\/jats:italic>\u00a0=\u00a00.22) and frequency of self\u2010monitoring of MVPA were not significantly associated with change in MVPA from baseline to 6\u00a0months (<jats:italic>r<\/jats:italic>\u00a0=\u00a00.26, <jats:italic>P<\/jats:italic>\u00a0=\u00a00.44). Baseline MVPA (<jats:italic>r<\/jats:italic>\u00a0=\u00a00.02, <jats:italic>P<\/jats:italic>\u00a0=\u00a00.92) and change in MVPA from baseline to 6\u00a0months (<jats:italic>r<\/jats:italic>\u00a0=\u00a00.13, <jats:italic>P<\/jats:italic>\u00a0=\u00a00.30) were not associated with changes in body weight across the 6\u2010month intervention.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>We observed a non\u2010significant increase in MVPA (30%), which was not associated with the magnitude of weight loss in a sample of adolescents and young adults with IDD who participated in a 6\u2010month multi\u2010component weight loss intervention. Additional strategies to increase MVPA in adolescents and young adults with IDD participating in weight loss interventions need to be developed and evaluated.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jir.12909","type":"journal-article","created":{"date-parts":[[2021,12,17]],"date-time":"2021-12-17T00:29:56Z","timestamp":1639700996000},"page":"545-557","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["Changes in physical activity across a 6\u2010month weight loss intervention in adolescents with intellectual and developmental disabilities"],"prefix":"10.1111","volume":"66","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1705-1643","authenticated-orcid":false,"given":"L. 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C.","family":"Helsel","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine The University of Kansas Medical Center  Kansas City KS USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R. A.","family":"Washburn","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine The University of Kansas Medical Center  Kansas City KS USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J. 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