{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,8]],"date-time":"2026-07-08T03:06:47Z","timestamp":1783480007374,"version":"3.55.0"},"reference-count":22,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2014,5,16]],"date-time":"2014-05-16T00:00:00Z","timestamp":1400198400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Chair rise performance is incorporated in clinical assessments to indicate  fall risk status in older persons. This study investigated the test-retest reliability of a pendant-sensor-based assessment of chair rise performance. Forty-one older persons  (28 females, 13 males, age: 72\u201394) were assessed in two sessions with 3 to 8 days in between. Repeated chair rise transfers were measured after different instructions. Relative and absolute test-retest reliability of chair rise measurements in individual tests and average over all tests were evaluated by means of intra-class correlation coefficients (ICCs) and standard error of measurement (SEM) as a percentage of the measurement mean. Systematic bias between the measurements in test and retest was examined with paired  t-tests. Heteroscedasticity of the measurements was visually checked with Bland-Altman plots. In the different test conditions, the ICCs ranged between 0.63 and 0.93, and the SEM% ranged between 5.7% and 21.2%. The relative and absolute reliability of the average over all tests were ICC = 0.86 and SEM% = 9.5% for transfer duration, ICC = 0.93 and SEM% = 9.2% for maximum vertical acceleration, and ICC = 0.89 and SEM% = 10.0% for peak power. The results over all tests indicated that a fall risk assessment application based on pendant-worn-sensor measured chair rise performance in daily life might be feasible.<\/jats:p>","DOI":"10.3390\/s140508705","type":"journal-article","created":{"date-parts":[[2014,5,16]],"date-time":"2014-05-16T12:09:04Z","timestamp":1400242144000},"page":"8705-8717","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":26,"title":["Test-Retest Reliability of a Pendant-Worn Sensor Device in Measuring Chair Rise Performance in Older Persons"],"prefix":"10.3390","volume":"14","author":[{"given":"Wei","family":"Zhang","sequence":"first","affiliation":[{"name":"Personal Health Solutions Department, Philips Research Europe, High Tech Campus 34,  Eindhoven 5656AE, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"G.","family":"Regterschot","sequence":"additional","affiliation":[{"name":"University of Groningen, University Medical Center Groningen, Center for Human Movement Sciences, Antonius Deusinglaan 1, Groningen 9713 AV, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hana","family":"Schaabova","sequence":"additional","affiliation":[{"name":"Faculty of Biomedical Engineering, Czech Technical University, N\u00e1m. 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