{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,16]],"date-time":"2026-06-16T15:45:49Z","timestamp":1781624749333,"version":"3.54.5"},"reference-count":33,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2024,4,10]],"date-time":"2024-04-10T00:00:00Z","timestamp":1712707200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"French Innovation Defense Agency (AID)"},{"name":"French National Agency for Research and Technology (ANRT)"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The increasing use of inertial measurement units (IMU) in biomedical sciences brings new possibilities for clinical research. The aim of this paper is to demonstrate the accuracy of the IMU-based wearable Syde\u00ae device, which allows day-long and remote continuous gait recording in comparison to a reference motion capture system. Twelve healthy subjects (age: 23.17 \u00b1 2.04, height: 174.17 \u00b1 6.46 cm) participated in a controlled environment data collection and performed a series of gait tasks with both systems attached to each ankle. A total of 2820 strides were analyzed. The results show a median absolute stride length error of 1.86 cm between the IMU-based wearable device reconstruction and the motion capture ground truth, with the 75th percentile at 3.24 cm. The median absolute stride horizontal velocity error was 1.56 cm\/s, with the 75th percentile at 2.63 cm\/s. With a measurement error to the reference system of less than 3 cm, we conclude that there is a valid physical recovery of stride length and horizontal velocity from data collected with the IMU-based wearable Syde\u00ae device.<\/jats:p>","DOI":"10.3390\/s24082413","type":"journal-article","created":{"date-parts":[[2024,4,10]],"date-time":"2024-04-10T06:07:46Z","timestamp":1712729266000},"page":"2413","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["The Analytical Validity of Stride Detection and Gait Parameters Reconstruction Using the Ankle-Mounted Inertial Measurement Unit Syde\u00ae"],"prefix":"10.3390","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9870-3756","authenticated-orcid":false,"given":"Mona","family":"Michaud","sequence":"first","affiliation":[{"name":"Sysnav, 27200 Vernon, France"},{"name":"Universit\u00e9 Paris Saclay, Universit\u00e9 Paris Cit\u00e9, ENS Paris Saclay, CNRS, SSA, INSERM, Centre Borelli, 91190 Gif-sur-Yvette, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2437-5977","authenticated-orcid":false,"given":"Alexandre","family":"Gu\u00e9rin","sequence":"additional","affiliation":[{"name":"Sysnav, 27200 Vernon, France"},{"name":"DataShape, Inria Saclay Ile-de-France, 91120 Palaiseau, France"},{"name":"Laboratoire de Math\u00e9matiques d\u2019Orsay, Universit\u00e9 Paris-Saclay, CNRS, 91405 Orsay, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marguerite","family":"Dejean de La B\u00e2tie","sequence":"additional","affiliation":[{"name":"Sysnav, 27200 Vernon, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"L\u00e9opold","family":"Bancel","sequence":"additional","affiliation":[{"name":"Sysnav, 27200 Vernon, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4750-2265","authenticated-orcid":false,"given":"Laurent","family":"Oudre","sequence":"additional","affiliation":[{"name":"Universit\u00e9 Paris Saclay, Universit\u00e9 Paris Cit\u00e9, ENS Paris Saclay, CNRS, SSA, INSERM, Centre Borelli, 91190 Gif-sur-Yvette, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alexis","family":"Tricot","sequence":"additional","affiliation":[{"name":"Sysnav, 27200 Vernon, France"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,4,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Block, V.A., Pitsch, E., Tahir, P., Cree, B.A., Allen, D.D., and Gelfand, J.M. 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