{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T04:36:08Z","timestamp":1787027768535,"version":"build-2736575974"},"reference-count":41,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2026,2,26]],"date-time":"2026-02-26T00:00:00Z","timestamp":1772064000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Kids\u2019 Cancer Project"},{"name":"National Health and Medical Research Council of Australia","award":["APP2008300"],"award-info":[{"award-number":["APP2008300"]}]},{"name":"Cancer Institute NSW Early Career Fellowship","award":["2020\/ECF1144"],"award-info":[{"award-number":["2020\/ECF1144"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cancers"],"abstract":"<jats:p>Background\/Objectives: Childhood cancer survivors face long-term cancer-related health risks, and daily behaviours, such as physical activity and recreational screen use, may influence their long-term overall wellbeing. Yet, little is known about survivors\u2019 knowledge and understanding of recommended guidelines or their patterns of structured and unstructured activity. This study aimed to (i) assess survivors\u2019 knowledge of physical activity and screen time guidelines, (ii) describe their self-reported (un)structured activity and screen use across weekdays and weekends, and (iii) examine associations with health-related quality of life. Methods: This secondary analysis used data from a feasibility pilot study of an intervention for survivors aged 8\u201313 years who had completed cancer treatment at least 12 months earlier. Participants self-reported physical activity, recreational screen use, knowledge of guidelines, and health-related quality of life (HRQoL). We used descriptive statistics and non-parametric tests to analyse behavioural patterns and associations. Results: Over one-third of survivors underestimated or overestimated the recommended physical activity and screen time (35%), whilst 23\u201350% reported \u2018don\u2019t know\u2019. Participation in \u2018Physical Education\u2019 classes at school did not differ between summer and winter school terms, yet there was greater participation in structured physical activities in winter compared to summer school terms (median 270 vs. 170 min\/week). For unstructured physical activities, 69% reported engaging in a median of 60 min\/week at school on most days of the week in summer, whilst most survivors (96%) did not report any unstructured activity in winter. Only 19% met the recommended daily minimum of 60 min of physical activity year-round. Excessive screen use increased from school days (19%) to weekends (46%), notably handheld device screen time. We did not find any significant associations between meeting physical activity and screen time recommendations and HRQoL. Conclusions: Survivors frequently engage in irregular structured and unstructured physical activity levels and increased screen time. These findings emphasise the need for targeted, year-round interventions to improve physical activity, reduce recreational screen use, and support long-term survivorship health.<\/jats:p>","DOI":"10.3390\/cancers18050752","type":"journal-article","created":{"date-parts":[[2026,2,26]],"date-time":"2026-02-26T13:58:03Z","timestamp":1772114283000},"page":"752","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Structured and Unstructured Physical Activity, Screen Time and Quality of Life in Childhood Cancer Survivors"],"prefix":"10.3390","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6494-5861","authenticated-orcid":false,"given":"Lauren","family":"Ha","sequence":"first","affiliation":[{"name":"Behavioural Sciences Unit, Discipline of Paediatrics & Child Health, School of Clinical Medicine, Randwick Clinical Campus, UNSW Medicine & Health, UNSW Sydney, Sydney, NSW 2052, Australia"},{"name":"Kids Cancer Centre, Sydney Children\u2019s Hospital, Randwick, NSW 2031, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Darcy","family":"Singleton","sequence":"additional","affiliation":[{"name":"Behavioural Sciences Unit, Discipline of Paediatrics & Child Health, School of Clinical Medicine, Randwick Clinical Campus, UNSW Medicine & Health, UNSW Sydney, Sydney, NSW 2052, Australia"},{"name":"Kids Cancer Centre, Sydney Children\u2019s Hospital, Randwick, NSW 2031, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7704-7067","authenticated-orcid":false,"given":"Claire E.","family":"Wakefield","sequence":"additional","affiliation":[{"name":"Behavioural Sciences Unit, Discipline of Paediatrics & Child Health, School of Clinical Medicine, Randwick Clinical Campus, UNSW Medicine & Health, UNSW Sydney, Sydney, NSW 2052, Australia"},{"name":"Division of Quality of Life and Pediatric Palliative Care, Stanford University, Stanford, CA 94305, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2400-1353","authenticated-orcid":false,"given":"Richard J.","family":"Cohn","sequence":"additional","affiliation":[{"name":"Behavioural Sciences Unit, Discipline of Paediatrics & Child Health, School of Clinical Medicine, Randwick Clinical Campus, UNSW Medicine & Health, UNSW Sydney, Sydney, NSW 2052, Australia"},{"name":"Kids Cancer Centre, Sydney Children\u2019s Hospital, Randwick, NSW 2031, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3862-1932","authenticated-orcid":false,"given":"David","family":"Simar","sequence":"additional","affiliation":[{"name":"Faculty of Medicine & Health, UNSW Sydney, Sydney, NSW 2052, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7091-0347","authenticated-orcid":false,"given":"Christina","family":"Signorelli","sequence":"additional","affiliation":[{"name":"Behavioural Sciences Unit, Discipline of Paediatrics & Child Health, School of Clinical Medicine, Randwick Clinical Campus, UNSW Medicine & Health, UNSW Sydney, Sydney, NSW 2052, Australia"},{"name":"Kids Cancer Centre, Sydney Children\u2019s Hospital, Randwick, NSW 2031, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,2,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"101733","DOI":"10.1016\/j.canep.2020.101733","article-title":"Childhood cancer: Survival, treatment modalities, late effects and improvements over time","volume":"71","author":"Erdmann","year":"2021","journal-title":"Cancer 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