{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,28]],"date-time":"2026-04-28T02:49:42Z","timestamp":1777344582271,"version":"3.51.4"},"reference-count":20,"publisher":"Public Library of Science (PLoS)","issue":"1","license":[{"start":{"date-parts":[[2025,1,24]],"date-time":"2025-01-24T00:00:00Z","timestamp":1737676800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100004325","name":"AstraZeneca","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100004325","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS ONE"],"abstract":"<jats:p>We examined the reliability and validity of the Brief Physical Activity Assessment Tool (BPAAT) when administered by telephone interview compared to in-person administration. We analyzed data from the Epi-asthma study. Adult participants registered in the participating Portuguese primary health care centres (PCC) completed the BPAAT via telephone. After ~3 days (range 0\u20135 days), they had a face-to-face visit at their PCC and completed BPAAT using a tablet. The BPAAT classify individuals as \"insufficiently active\" (score 0\u20133) or \"sufficiently active\" (score 4\u20138). 355 subjects (60.8% female, 54[IQR 42\u201366] years) were included. The median BPAAT score was 2[0\u20134] for both methods, with a significant correlation (rho = 0.58, p&lt;0.001). Test-retest reliability was moderate (ICC = 0.56, 95%CI 0.49\u20130.63). Agreement in physical activity classification was fair (71.5%, kappa = 0.31, 95%CI 0.21\u20130.41), with telephone administration classifying more individuals as \"sufficiently active\" (37.2%) than in-person (15.5%). Telephone administration of the BPAAT is a valid and reliable approach for monitoring of physical activity in the general population. However, it may slightly overestimate activity levels compared to face-to-face administration, particularly among subjects aged 65 years and older.<\/jats:p>","DOI":"10.1371\/journal.pone.0317614","type":"journal-article","created":{"date-parts":[[2025,1,24]],"date-time":"2025-01-24T18:30:16Z","timestamp":1737743416000},"page":"e0317614","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":1,"title":["Validation of the brief physical activity assessment tool: Comparison of telephone and in-person 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