{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,3]],"date-time":"2026-06-03T05:04:51Z","timestamp":1780463091605,"version":"3.54.1"},"reference-count":20,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2021,6,24]],"date-time":"2021-06-24T00:00:00Z","timestamp":1624492800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Bioeng. Biotechnol."],"abstract":"<jats:p>This study aimed to compare the force-velocity mechanical variables derived from high-speed video- and radar-based method during forward skating sprint in ice hockey. Thirteen elite female ice hockey players performed two 40-m forward skating sprints to determine, in the horizontal plane, maximal velocity reached (V<jats:sub>max<\/jats:sub>), relative maximal theoretical force (F<jats:sub>0<\/jats:sub>), maximal theoretical velocity (V<jats:sub>0<\/jats:sub>), relative maximal power (P<jats:sub>max<\/jats:sub>), linear slope of the force-velocity relationship (FV slope), maximal value of the ratio of force (RF<jats:sub>max<\/jats:sub>) and index of force application technique (Drf). Two different high-speed video-based methods adding a time shift (ST-TS) or not (ST) were used and independently compared to the radar-derived method. ST and ST-TS showed significant mean differences (all <jats:italic>p<\/jats:italic> &amp;lt; 0.002) compared to radar-derived processing for all variables except for V<jats:sub>0<\/jats:sub> (<jats:italic>p<\/jats:italic> = 0.26) and V<jats:sub>max<\/jats:sub> (<jats:italic>p<\/jats:italic> = 0.13) inferred from ST. In reference to radar-derived variables, ST-TS significantly induced <jats:italic>larger<\/jats:italic> lower values compared to radar of the main forward skating sprint determinants (P<jats:sub>max<\/jats:sub>, F<jats:sub>0<\/jats:sub>, RF<jats:sub>max<\/jats:sub> and Drf) and <jats:italic>moderate-to-large<\/jats:italic> overestimation for velocity variables (V<jats:sub>0<\/jats:sub> and V<jats:sub>max<\/jats:sub>). Correlations between ST or ST-TS and radar-derived methods ranged from <jats:italic>trivial<\/jats:italic> for velocity variables to <jats:italic>very large<\/jats:italic> for force and power variables. Consequently, practitioners must be aware that using such high-speed video-based methods would permit to determine mechanical variables at the cost of much lower accuracy and reliability than the radar-derived method.<\/jats:p>","DOI":"10.3389\/fbioe.2021.661744","type":"journal-article","created":{"date-parts":[[2021,6,24]],"date-time":"2021-06-24T07:08:20Z","timestamp":1624518500000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":3,"title":["Truncated Estimation of Skating Force-Velocity Profiling When Using High-Speed Video-Based Methods Compared to Radar-Derived Processing"],"prefix":"10.3389","volume":"9","author":[{"given":"Jerome","family":"Perez","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ga\u00ebl","family":"Guilhem","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Franck","family":"Brocherie","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2021,6,24]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"439","DOI":"10.1055\/s-0031-1301313","article-title":"Measurement error in estimates of sprint velocity from a laser displacement measurement device.","volume":"33","author":"Bezodis","year":"2012","journal-title":"Int. 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