{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T13:42:50Z","timestamp":1791553370820,"version":"4.3.4"},"reference-count":49,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,5,26]],"date-time":"2026-05-26T00:00:00Z","timestamp":1779753600000},"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. Nutr."],"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Metabolic disorders are closely linked to sleep disturbances. Time-restricted eating (TRE) can improve metabolic disturbances, but its impact on sleep quality is insufficiently studied and recommendations regarding the eating timing in TRE are pending. Our aim was to investigate the impact of early TRE (eTRE) and late TRE (lTRE) on sleep quality in obesity.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>This is a secondary analysis of the randomized crossover trial, which included 31 women with overweight and obesity. Following a 2\u20134 week baseline period, participants were assigned to either a two-week eTRE (eating 8 a.m\u22124 p.m.) or a two-week lTRE (eating 1 p.m.\u22129 p.m.), separated by a two-week washout phase. Sleep metrics were assessed objectively by blinded actigraphy and subjectively using Pittsburgh Sleep Quality Index (PSQI) and self-report of sleep quality. Hunger and satiety were examined using a Visual Analogue Scale (VAS).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Actigraphy revealed no between-intervention differences in changes in sleep metrics, but improvements were observed within eTRE compared with baseline for sleep efficiency (\n                      <jats:italic>p<\/jats:italic>\n                      = 0.047), sleep fragmentation index (SFI) (\n                      <jats:italic>p<\/jats:italic>\n                      = 0.029), and awakening length (\n                      <jats:italic>p<\/jats:italic>\n                      = 0.043). Individuals with lowest sleep quality at the baseline showed its largest improvements in eTRE. PSQI scores and self-reported sleep quality remained unchanged between and within both interventions. There were no differences in evening hunger and satiety scores between eTRE and lTRE, and no correlations between hunger or satiety and sleep quality.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>\n                      eTRE, but not lTRE, improved objectively assessed sleep quality, and these changes were not related to hunger or satiety. eTRE may be a more effective strategy for improving wellbeing and sleep-related health outcomes.\n                      <jats:ext-link>ClinicalTrials.gov<\/jats:ext-link>\n                      number, NCT04351672 (registered on April 17, 2020).\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.3389\/fnut.2026.1823259","type":"journal-article","created":{"date-parts":[[2026,5,26]],"date-time":"2026-05-26T06:04:11Z","timestamp":1779775451000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":1,"title":["Early but not late time-restricted eating improves an actigraphy-estimated sleep quality in women with overweight or obesity: secondary analysis of the crossover ChronoFast trial"],"prefix":"10.3389","volume":"13","author":[{"given":"Beeke","family":"Peters","sequence":"first","affiliation":[{"name":"Department of Molecular Metabolism and Precision Nutrition, German Institute of Human Nutrition Potsdam-Rehbruecke","place":["Nuthetal, Germany"]},{"name":"German Center for Diabetes Research (DZD)","place":["M\u00fcnchen-Neuherberg, Germany"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jennifer","family":"Jokisch","sequence":"additional","affiliation":[{"name":"Department of Molecular Metabolism and Precision Nutrition, German Institute of Human Nutrition Potsdam-Rehbruecke","place":["Nuthetal, Germany"]},{"name":"Institute of Nutritional Science, University of Potsdam","place":["Nuthetal, Germany"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Julia","family":"Schwarz","sequence":"additional","affiliation":[{"name":"Department of Molecular Metabolism and Precision Nutrition, German Institute of Human Nutrition Potsdam-Rehbruecke","place":["Nuthetal, Germany"]},{"name":"Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg","place":["Halle (Saale), Germany"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bettina","family":"Schuppelius","sequence":"additional","affiliation":[{"name":"Department of Molecular Metabolism and Precision Nutrition, German Institute of Human Nutrition Potsdam-Rehbruecke","place":["Nuthetal, Germany"]},{"name":"German Center for Diabetes Research (DZD)","place":["M\u00fcnchen-Neuherberg, Germany"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andreas F. H.","family":"Pfeiffer","sequence":"additional","affiliation":[{"name":"German Center for Diabetes Research (DZD)","place":["M\u00fcnchen-Neuherberg, Germany"]},{"name":"Department of Endocrinology and Metabolism, Charit\u00e9 \u2013 Universit\u00e4tsmedizin Berlin, Corporate Member of Freie Universit\u00e4t Berlin and Humboldt-Universit\u00e4t zu Berlin","place":["Berlin, Germany"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andreas","family":"Michalsen","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine and Nature-Based Therapies, Immanuel Hospital Berlin","place":["Berlin, Germany"]},{"name":"Institute of Social Medicine, Epidemiology and Health Economics, Charit\u00e9-Universit\u00e4tsmedizin Berlin, Corporate Member of Freie Universit\u00e4t Berlin and Humboldt-Universit\u00e4t zu Berlin","place":["Berlin, 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