{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,31]],"date-time":"2025-12-31T19:58:47Z","timestamp":1767211127571,"version":"build-2065373602"},"reference-count":15,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2020,5,25]],"date-time":"2020-05-25T00:00:00Z","timestamp":1590364800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The recent paper \u201cHurdle Clearance Detection and Spatiotemporal Analysis in 400 Meters Hurdles Races Using Shoe-Mounted Magnetic and Inertial Sensor\u201d (Sensors 2020, 20, 354) proposes a wearable system based on a foot-worn miniature inertial measurement unit (MIMU) and different methods to detect hurdle clearance and to identify the leading leg during 400-m hurdle races. Furthermore, the presented system identifies changes in contact time, flight time, running speed, and step frequency throughout the race. In this comment, we discuss the original paper with a focus on the ecological validity and the applicability of MIMU systems for field-based settings, such as training or competition for elite athletes.<\/jats:p>","DOI":"10.3390\/s20102995","type":"journal-article","created":{"date-parts":[[2020,5,25]],"date-time":"2020-05-25T11:42:02Z","timestamp":1590406922000},"page":"2995","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Comment on \u201cHurdle Clearance Detection and Spatiotemporal Analysis in 400 Meters Hurdles Races Using Shoe-Mounted Magnetic and Inertial Sensor\u201d"],"prefix":"10.3390","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9417-544X","authenticated-orcid":false,"given":"Marcus","family":"Schmidt","sequence":"first","affiliation":[{"name":"Institute for Sport and Sport Science, TU Dortmund University, Otto-Hahn-Stra\u00dfe 3, 44227 Dortmund, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tobias","family":"Alt","sequence":"additional","affiliation":[{"name":"Department of Biomechanics, Performance Analysis and Strength &amp; Conditioning, Olympic Training and Testing Centre Westphalia, 44139 Dortmund, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kevin","family":"Nolte","sequence":"additional","affiliation":[{"name":"Institute for Sport and Sport Science, TU Dortmund University, Otto-Hahn-Stra\u00dfe 3, 44227 Dortmund, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Thomas","family":"Jaitner","sequence":"additional","affiliation":[{"name":"Institute for Sport and Sport Science, TU Dortmund University, Otto-Hahn-Stra\u00dfe 3, 44227 Dortmund, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2020,5,25]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Falbriard, M., Mohr, M., and Aminian, K. (2020). Hurdle Clearance Detection and Spatiotemporal Analysis in 400 Meters Hurdles Races Using Shoe-Mounted Magnetic and Inertial Sensors. Sensors, 20.","DOI":"10.3390\/s20020354"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"919","DOI":"10.1007\/s40279-013-0072-7","article-title":"Harnessing and Understanding Feedback Technology in Applied Settings","volume":"43","author":"Phillips","year":"2013","journal-title":"Sports Med."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"26","DOI":"10.1016\/j.gaitpost.2019.07.123","article-title":"Quantification of the validity and reliability of sprint performance metrics computed using inertial sensors: A systematic review","volume":"73","author":"Macadam","year":"2019","journal-title":"Gait Posture"},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Camomilla, V., Bergamini, E., Fantozzi, S., and Vannozzi, G. (2018). 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