{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,31]],"date-time":"2026-10-31T20:25:28Z","timestamp":1793478328434,"version":"4.5.0"},"reference-count":68,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2023,11,25]],"date-time":"2023-11-25T00:00:00Z","timestamp":1700870400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Hong Kong Research Grants Council","award":["P0036830"],"award-info":[{"award-number":["P0036830"]}]},{"name":"Hong Kong Research Grants Council","award":["P0034491"],"award-info":[{"award-number":["P0034491"]}]},{"name":"Hong Kong Research Grants Council","award":["G4Y56R006"],"award-info":[{"award-number":["G4Y56R006"]}]},{"name":"Hong Kong Research Grants Council","award":["P0038945"],"award-info":[{"award-number":["P0038945"]}]},{"DOI":"10.13039\/501100004377","name":"Hong Kong Polytechnic University","doi-asserted-by":"publisher","award":["P0036830"],"award-info":[{"award-number":["P0036830"]}],"id":[{"id":"10.13039\/501100004377","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004377","name":"Hong Kong Polytechnic University","doi-asserted-by":"publisher","award":["P0034491"],"award-info":[{"award-number":["P0034491"]}],"id":[{"id":"10.13039\/501100004377","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004377","name":"Hong Kong Polytechnic University","doi-asserted-by":"publisher","award":["G4Y56R006"],"award-info":[{"award-number":["G4Y56R006"]}],"id":[{"id":"10.13039\/501100004377","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004377","name":"Hong Kong Polytechnic University","doi-asserted-by":"publisher","award":["P0038945"],"award-info":[{"award-number":["P0038945"]}],"id":[{"id":"10.13039\/501100004377","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Research Institute for Smart Ageing, The Hong Kong Polytechnic University","award":["P0036830"],"award-info":[{"award-number":["P0036830"]}]},{"name":"Research Institute for Smart Ageing, The Hong Kong Polytechnic University","award":["P0034491"],"award-info":[{"award-number":["P0034491"]}]},{"name":"Research Institute for Smart Ageing, The Hong Kong Polytechnic University","award":["G4Y56R006"],"award-info":[{"award-number":["G4Y56R006"]}]},{"name":"Research Institute for Smart Ageing, The Hong Kong Polytechnic University","award":["P0038945"],"award-info":[{"award-number":["P0038945"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Biosensors"],"abstract":"<jats:p>Falls are a prevalent cause of injury among older people. While some wearable inertial measurement unit (IMU) sensor-based systems have been widely investigated for fall risk assessment, their reliability, validity, and identification ability in community-dwelling older people remain unclear. Therefore, this study evaluated the performance of a commercially available IMU sensor-based fall risk assessment system among 20 community-dwelling older recurrent fallers (with a history of \u22652 falls in the past 12 months) and 20 community-dwelling older non-fallers (no history of falls in the past 12 months), together with applying the clinical scale of the Mini-Balance Evaluation Systems Test (Mini-BESTest). The results show that the IMU sensor-based system exhibited a significant moderate to excellent test\u2013retest reliability (ICC = 0.838, p &lt; 0.001), an acceptable level of internal consistency reliability (Spearman\u2019s rho = 0.471, p = 0.002), an acceptable convergent validity (Cronbach\u2019s \u03b1 = 0.712), and an area under the curve (AUC) value of 0.590 for the IMU sensor-based receiver-operating characteristic (ROC) curve. The findings suggest that while the evaluated IMU sensor-based system exhibited good reliability and acceptable validity, it might not be able to fully identify the recurrent fallers and non-fallers in a community-dwelling older population. Further system optimization is still needed.<\/jats:p>","DOI":"10.3390\/bios13120998","type":"journal-article","created":{"date-parts":[[2023,11,27]],"date-time":"2023-11-27T03:48:17Z","timestamp":1701056897000},"page":"998","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["Reliability, Validity, and Identification Ability of a Commercialized Waist-Attached Inertial Measurement Unit (IMU) Sensor-Based System in Fall Risk Assessment of Older People"],"prefix":"10.3390","volume":"13","author":[{"given":"Ke-Jing","family":"Li","sequence":"first","affiliation":[{"name":"Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicky Lok-Yi","family":"Wong","sequence":"additional","affiliation":[{"name":"Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Man-Ching","family":"Law","sequence":"additional","affiliation":[{"name":"Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, China"},{"name":"Research Institute for Smart Ageing, The Hong Kong Polytechnic University, Hong Kong SAR, China"},{"name":"Jockey Club Smart Ageing Hub, The Hong Kong Polytechnic University, Hong Kong SAR, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9918-541X","authenticated-orcid":false,"given":"Freddy Man-Hin","family":"Lam","sequence":"additional","affiliation":[{"name":"Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong SAR, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hoi-Ching","family":"Wong","sequence":"additional","affiliation":[{"name":"Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, China"},{"name":"Jockey Club Smart Ageing Hub, The Hong Kong Polytechnic University, Hong Kong SAR, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tsz-On","family":"Chan","sequence":"additional","affiliation":[{"name":"Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, China"},{"name":"Jockey Club Smart Ageing Hub, The Hong Kong Polytechnic University, Hong Kong SAR, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kit-Naam","family":"Wong","sequence":"additional","affiliation":[{"name":"Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, China"},{"name":"Jockey Club Smart Ageing Hub, The Hong Kong Polytechnic University, Hong Kong SAR, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3407-9226","authenticated-orcid":false,"given":"Yong-Ping","family":"Zheng","sequence":"additional","affiliation":[{"name":"Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, China"},{"name":"Research Institute for Smart Ageing, The Hong Kong Polytechnic University, Hong Kong SAR, China"},{"name":"Jockey Club Smart Ageing Hub, The Hong Kong Polytechnic University, Hong Kong SAR, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qi-Yao","family":"Huang","sequence":"additional","affiliation":[{"name":"School of Fashion and Textiles, The Hong Kong Polytechnic University, Hong Kong SAR, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5911-5756","authenticated-orcid":false,"given":"Arnold Yu-Lok","family":"Wong","sequence":"additional","affiliation":[{"name":"Research Institute 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