{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,27]],"date-time":"2026-03-27T16:25:59Z","timestamp":1774628759955,"version":"3.50.1"},"reference-count":38,"publisher":"MDPI AG","issue":"21","license":[{"start":{"date-parts":[[2020,11,5]],"date-time":"2020-11-05T00:00:00Z","timestamp":1604534400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001505","name":"Health Research Council of New Zealand","doi-asserted-by":"publisher","award":["18\/181"],"award-info":[{"award-number":["18\/181"]}],"id":[{"id":"10.13039\/501100001505","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Strong associations exist between quality of life and physical activity for those living in aged residential care (ARC). Suitable and reliable tools are required to quantify physical activity for descriptive and evaluative purposes. We calculated the number of days required for reliable walking outcomes indicative of physical activity in an ARC population using a trunk-worn device. ARC participants (n = 257) wore the device for up to 7 days. Reasons for data loss were also recorded. The volume, pattern, and variability of walking was calculated. For 197 participants who wore the device for at least 3 days, linear mixed models determined the impact of week structure and number of days required to achieve reliable outcomes, collectively and then stratified by care level. The average days recorded by the wearable device was 5.2 days. Day of the week did not impact walking activity. Depending on the outcome and level of care, 2\u20135 days was sufficient for reliable estimates. This study provides informative evidence for future studies aiming to use a wearable device located on the trunk to quantify physical activity walking out in the ARC population.<\/jats:p>","DOI":"10.3390\/s20216314","type":"journal-article","created":{"date-parts":[[2020,11,5]],"date-time":"2020-11-05T09:04:34Z","timestamp":1604567074000},"page":"6314","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["Quantifying Reliable Walking Activity with a Wearable Device in Aged Residential Care: How Many Days Are Enough?"],"prefix":"10.3390","volume":"20","author":[{"given":"Christopher","family":"Buckley","sequence":"first","affiliation":[{"name":"Department of Sport, Exercise and Rehabilitation, Faculty of Health and Life Science, Northumbria University, Newcastle Upon Tyne NE1 8ST, UK"},{"name":"Translational and Clinical Research Institute, Faculty of Medical Science, Newcastle University, Newcastle Upon Tyne NE1 7RU, UK"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5709-367X","authenticated-orcid":false,"given":"Alana","family":"Cavadino","sequence":"additional","affiliation":[{"name":"School of Population Health, Faculty of Medical and Health Sciences, The University of Auckland, Auckland 1023, New Zealand"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1154-4751","authenticated-orcid":false,"given":"Silvia","family":"Del Din","sequence":"additional","affiliation":[{"name":"Translational and Clinical Research Institute, Faculty of Medical Science, Newcastle University, Newcastle Upon Tyne NE1 7RU, UK"}]},{"given":"Sue","family":"Lord","sequence":"additional","affiliation":[{"name":"School of Clinical Sciences, Auckland University of Technology, Auckland 1010, New Zealand"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5284-1501","authenticated-orcid":false,"given":"Lynne","family":"Taylor","sequence":"additional","affiliation":[{"name":"School of Population Health, Faculty of Medical and Health Sciences, The University of Auckland, Auckland 1023, New Zealand"}]},{"given":"Lynn","family":"Rochester","sequence":"additional","affiliation":[{"name":"Translational and Clinical Research Institute, Faculty of Medical Science, Newcastle University, Newcastle Upon Tyne NE1 7RU, UK"},{"name":"The Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle Upon Tyne NE7 7DN, UK"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5992-3681","authenticated-orcid":false,"given":"Ngaire","family":"Kerse","sequence":"additional","affiliation":[{"name":"School of Population Health, Faculty of Medical and Health Sciences, The University of Auckland, Auckland 1023, New Zealand"}]}],"member":"1968","published-online":{"date-parts":[[2020,11,5]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"9","DOI":"10.1123\/JAPA.2013-0103","article-title":"Assessing Physical Activity in Older Adults: Required Days of Trunk Accelerometer Measurements for Reliable Estimation","volume":"23","author":"Rispens","year":"2015","journal-title":"J. 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