{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,20]],"date-time":"2026-05-20T16:53:45Z","timestamp":1779296025384,"version":"3.51.4"},"reference-count":47,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2022,1,12]],"date-time":"2022-01-12T00:00:00Z","timestamp":1641945600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000024","name":"Canadian Institutes of Health Research","doi-asserted-by":"publisher","award":["200907AMG-208147-AML-CFEB-56596"],"award-info":[{"award-number":["200907AMG-208147-AML-CFEB-56596"]}],"id":[{"id":"10.13039\/501100000024","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100013873","name":"Government of Ontario","doi-asserted-by":"publisher","award":["Ontario Graduate Scholarship"],"award-info":[{"award-number":["Ontario Graduate Scholarship"]}],"id":[{"id":"10.13039\/100013873","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Parkwood Hospital","award":["Joseph Scott Studentship"],"award-info":[{"award-number":["Joseph Scott Studentship"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Wearable global position system (GPS) technology can help those working with older populations and people living with movement disorders monitor and maintain their mobility level. Health research using GPS often employs inconsistent recording lengths due to the lack of a standard minimum GPS recording length for a clinical context. Our work aimed to recommend a GPS recording length for an older clinical population. Over 14 days, 70 older adults with Parkinson\u2019s disease wore the wireless inertial motion unit with GPS (WIMU-GPS) during waking hours to capture daily \u201ctime outside\u201d, \u201ctrip count\u201d, \u201chotspots count\u201d and \u201carea size travelled\u201d. The longest recording length accounting for weekend and weekdays was \u22657 days of \u2265800 daily minutes of data (14 participants with 156, 483.9 min recorded). We compared the error rate generated when using data based on recording lengths shorter than this sample. The smallest percentage errors were observed across all outcomes, except \u201chotspots count\u201d, with daily recordings \u2265500 min (8.3 h). Eight recording days will capture mobility variability throughout days of the week. This study adds empirical evidence to the sensor literature on the required minimum duration of GPS recording.<\/jats:p>","DOI":"10.3390\/s22020563","type":"journal-article","created":{"date-parts":[[2022,1,12]],"date-time":"2022-01-12T04:15:25Z","timestamp":1641960925000},"page":"563","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["How Long Should GPS Recording Lengths Be to Capture the Community Mobility of An Older Clinical Population? A Parkinson\u2019s Example"],"prefix":"10.3390","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0452-7550","authenticated-orcid":false,"given":"Lynn","family":"Zhu","sequence":"first","affiliation":[{"name":"Department of Epidemiology and Biostatistics, Schulich School of Medicine and Dentistry, Western University, London, ON N6A 5C1, Canada"},{"name":"Department of Research and Academics, Ontario Shores Centre for Mental Health Sciences, Whitby, ON L1N 5S9, Canada"},{"name":"Ecological Mobility in Aging and Parkinson\u2019s (EMAP) Research Group, Montr\u00e9al, QC H2L 2C4, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6582-4519","authenticated-orcid":false,"given":"Patrick","family":"Boissy","sequence":"additional","affiliation":[{"name":"Ecological Mobility in Aging and Parkinson\u2019s (EMAP) Research Group, Montr\u00e9al, QC H2L 2C4, Canada"},{"name":"Department of Surgery, Orthopaedics Division, Faculty of Medicine and Health Sciences, Universit\u00e9 de Sherbrooke, Sherbrooke, QC J1H 5N4, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5906-1041","authenticated-orcid":false,"given":"Christian","family":"Duval","sequence":"additional","affiliation":[{"name":"D\u00e9partement des Sciences de L\u2019activit\u00e9 Physique, Universit\u00e9 du Qu\u00e9bec \u00e0 Montr\u00e9al, Montreal, QC H2L 2C4, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guangyong","family":"Zou","sequence":"additional","affiliation":[{"name":"Department of Epidemiology and Biostatistics, Schulich School of Medicine and Dentistry, Western University, London, ON N6A 5C1, Canada"},{"name":"Robarts Research Institute, Western University, London, ON N6A 3K7, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7513-8651","authenticated-orcid":false,"given":"Mandar","family":"Jog","sequence":"additional","affiliation":[{"name":"Ecological Mobility in Aging and Parkinson\u2019s (EMAP) Research Group, Montr\u00e9al, QC H2L 2C4, Canada"},{"name":"Parkinson\u2019s Foundation Center of Excellence, London Movement Disorders Centre, London Health Sciences Centre, London, ON N6A 5W9, Canada"},{"name":"Department of Clinical Neurological Sciences, Schulich School of Medicine and Dentistry, Western University, London, ON N6A 3K7, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Manuel","family":"Montero-Odasso","sequence":"additional","affiliation":[{"name":"Department of Epidemiology and Biostatistics, Schulich School of Medicine and Dentistry, Western University, London, ON N6A 5C1, Canada"},{"name":"Gait and Brain Lab, Parkwood Institute, London Health Sciences Centre, London, ON N6C 5J1, Canada"},{"name":"Division of Geriatric Medicine, Schulich School of Medicine and Dentistry, Western University, London, ON N6A 3K7, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mark","family":"Speechley","sequence":"additional","affiliation":[{"name":"Department of Epidemiology and Biostatistics, Schulich School of Medicine and Dentistry, Western University, London, ON N6A 5C1, Canada"},{"name":"Ecological Mobility in Aging and Parkinson\u2019s (EMAP) Research Group, Montr\u00e9al, QC H2L 2C4, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,1,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"723","DOI":"10.1177\/0898264313490198","article-title":"The impact of mobility on quality of life among older persons","volume":"25","author":"Yeung","year":"2013","journal-title":"J. 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