{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,17]],"date-time":"2026-07-17T16:07:43Z","timestamp":1784304463065,"version":"3.55.0"},"reference-count":27,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2022,12,28]],"date-time":"2022-12-28T00:00:00Z","timestamp":1672185600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001700","name":"MEXT\u2019s \u201cInnovation Platform for Society 5.0\u201d","doi-asserted-by":"publisher","award":["JPMXP0518071489"],"award-info":[{"award-number":["JPMXP0518071489"]}],"id":[{"id":"10.13039\/501100001700","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Motion sensors are widely used for gait analysis. The validity of commercial gait analysis systems is of great interest because calculating position\/angle-level gait parameters potentially produces an error in the integration process of the motion sensor data; moreover, the validity of ORPHE ANALYTICS, a motion-sensor-based gait analysis system, has not yet been examined. We examined the validity of the gait parameters calculated using ORPHE ANALYTICS relative to those calculated using conventional optical motion capture. Nine young adults performed gait tasks on a treadmill at speeds of 2\u201312 km\/h. The three-dimensional position data and acceleration and angular velocity data of the feet were collected. The gait parameters were calculated from motion sensor data using ORPHE ANALYTICS, and optical motion capture data. Intraclass correlation coefficients [ICC(2,1)] were calculated for relative validities. Eight items, namely, stride duration, stride length, stride frequency, stride speed, vertical height, stance phase duration, swing phase duration, and sagittal angleIC exhibited excellent relative validities [ICC(2,1) &gt; 0.9]. In contrast, sagittal angleTO and frontal angleIC demonstrated good [ICC(2,1) = 0.892\u20130.833] and moderate relative validity [ICC(2,1) = 0.566\u20130.627], respectively. ORPHE ANALYTICS was found to exhibit excellent relative validities for most gait parameters. These results suggest its feasibility for gait analysis outside the laboratory setting.<\/jats:p>","DOI":"10.3390\/s23010331","type":"journal-article","created":{"date-parts":[[2022,12,29]],"date-time":"2022-12-29T02:54:42Z","timestamp":1672282482000},"page":"331","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Validity of Spatio-Temporal Gait Parameters in Healthy Young Adults Using a Motion-Sensor-Based Gait Analysis System (ORPHE ANALYTICS) during Walking and Running"],"prefix":"10.3390","volume":"23","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1579-2736","authenticated-orcid":false,"given":"Yuki","family":"Uno","sequence":"first","affiliation":[{"name":"Department of Health and Sport Sciences, Graduate School of Medicine, Osaka University, Suita 565-0871, Osaka, Japan"},{"name":"ORPHE Inc., Shibuya 151-0053, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4176-689X","authenticated-orcid":false,"given":"Issei","family":"Ogasawara","sequence":"additional","affiliation":[{"name":"Department of Health and Sport Sciences, Graduate School of Medicine, Osaka University, Suita 565-0871, Osaka, Japan"},{"name":"Department of Sports Medical Biomechanics, Graduate School of Medicine, Osaka University, Suita 565-0871, Osaka, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8252-7281","authenticated-orcid":false,"given":"Shoji","family":"Konda","sequence":"additional","affiliation":[{"name":"Department of Health and Sport Sciences, Graduate School of Medicine, Osaka University, Suita 565-0871, Osaka, Japan"},{"name":"Department of Sports Medical Biomechanics, Graduate School of Medicine, Osaka University, Suita 565-0871, Osaka, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Natsuki","family":"Yoshida","sequence":"additional","affiliation":[{"name":"Department of Health and Sport Sciences, Graduate School of Medicine, Osaka University, Suita 565-0871, Osaka, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Naoki","family":"Otsuka","sequence":"additional","affiliation":[{"name":"ORPHE Inc., Shibuya 151-0053, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuya","family":"Kikukawa","sequence":"additional","affiliation":[{"name":"ORPHE Inc., Shibuya 151-0053, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3424-4746","authenticated-orcid":false,"given":"Akira","family":"Tsujii","sequence":"additional","affiliation":[{"name":"Department of Sports Medical Biomechanics, Graduate School of Medicine, Osaka University, Suita 565-0871, Osaka, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ken","family":"Nakata","sequence":"additional","affiliation":[{"name":"Department of Health and Sport Sciences, Graduate School of Medicine, Osaka University, Suita 565-0871, Osaka, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,12,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"62","DOI":"10.1186\/s12984-020-00685-3","article-title":"Validity and Reliability of Wearable Inertial Sensors in Healthy Adult Walking: A Systematic Review and Meta-Analysis","volume":"17","author":"Kobsar","year":"2020","journal-title":"J. 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