{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T18:44:02Z","timestamp":1792176242429,"version":"4.4.0"},"reference-count":55,"publisher":"SAGE Publications","license":[{"start":{"date-parts":[[2026,10,12]],"date-time":"2026-10-12T00:00:00Z","timestamp":1791763200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,10,12]],"date-time":"2026-10-12T00:00:00Z","timestamp":1791763200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["2024.18442.PRT"],"award-info":[{"award-number":["2024.18442.PRT"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["NeuroRehabilitation"],"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>The International Physical Activity Questionnaire - Short Form (IPAQ-SF) and ActiGraph accelerometers are widely used and internationally recommended to assess physical activity (PA) and sedentary time (ST). However, their agreement in individuals with chronic stroke remains unclear.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>To quantify the magnitude of agreement between IPAQ-SF and ActiGraph-derived weekly moderate-to-vigorous PA (MVPA), total PA, and ST in chronic stroke survivors.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Fifty community-dwelling adults with chronic stroke who walked independently were enrolled in this cross-sectional study. Participants wore an accelerometer (ActiGraph GT3X+) on the non-paretic side of the waist for seven consecutive days. The IPAQ-SF was completed via interview on the following day.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>IPAQ-SF and ActiGraph-derived estimates showed substantial individual-level discrepancies, with wide limits of agreement (LoA) across outcomes. For MVPA, the mean ratio was 1.02 (95%CI: 0.49 to 2.11; ratio LoA: 0.01 to 154.62). For total PA, the median ratio was 0.08 (95% CI: 0.06 to 0.14; non-parametric ratio LoA: 0.00 to 1.33). For ST, the mean ratio was 0.85 (95%CI: 0.78 to 0.92; ratio LoA: 0.47 to 1.53).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Findings indicate poor individual-level agreement between the IPAQ-SF and ActiGraph-derived estimates, with wide LoA and evidence of heteroscedasticity. At the group level, the IPAQ-SF underestimated total PA and ST, whereas MVPA showed no evidence of fixed bias. Although the IPAQ-SF may provide a broad descriptive assessment of PA and ST at the group level, it should not be used interchangeably with ActiGraph for individual-level estimation in individuals with chronic stroke.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/10538135261491937","type":"journal-article","created":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T05:12:56Z","timestamp":1791868376000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Physical Activity and Sedentary Time in Chronic Stroke: An Agreement Study Between the IPAQ-SF and ActiGraph Measures"],"prefix":"10.1177","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3041-9131","authenticated-orcid":false,"given":"Teresa L","family":"Dias","sequence":"first","affiliation":[{"name":"University of Aveiro"},{"name":"Universidade Polit\u00e9cnica de Set\u00fabal, Escola Superior de Sa\u00fade, Set\u00fabal, Portugal"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9094-1493","authenticated-orcid":false,"given":"Fernando","family":"Ribeiro","sequence":"additional","affiliation":[{"name":"University of Aveiro"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2899-9640","authenticated-orcid":false,"given":"Carla M","family":"Pereira","sequence":"additional","affiliation":[{"name":"Universidade Polit\u00e9cnica de Set\u00fabal, Escola Superior de Sa\u00fade, Set\u00fabal, Portugal"},{"name":"Comprehensive Health Research Centre (CHRC), NOVA University of Lisbon, Lisbon, Portugal"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2026,10,12]]},"reference":[{"key":"e_1_3_3_2_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0134606"},{"key":"e_1_3_3_3_1","unstructured":"ActiGraph LLC. 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