{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,12]],"date-time":"2026-01-12T23:05:10Z","timestamp":1768259110953,"version":"3.49.0"},"reference-count":38,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2021,5,13]],"date-time":"2021-05-13T00:00:00Z","timestamp":1620864000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"French Ministry of Sports","award":["13i07"],"award-info":[{"award-number":["13i07"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>While the Player Load is a widely-used parameter for physical demand quantification using wearable accelerometers, its calculation is subjected to potential errors related to rotational changes of the reference frame. The aims of this study were (i) to assess the concurrent validity of accelerometry-based Player Load against force plates; (ii) to validate a novel metric, the Accel\u2019Rate overcoming this theoretical issue. Twenty-one recreational athlete males instrumented with two triaxial accelerometers positioned at the upper and lower back performed running-based locomotor movements at low and high intensity over six in-series force plates. We examined the validity of the Player Load and the Accel\u2019Rate by using force plates. Standard error of the estimate was small to moderate for all tested conditions (Player Load: 0.45 to 0.87; Accel\u2019Rate: 0.25 to 0.95). Accel\u2019Rate displayed trivial to small mean biases (\u22121.0 to 6.1 a.u.) while the Player Load displayed systematic very large to extremely large mean biases (17.1 to 226.0 a.u.). These findings demonstrate a better concurrent validity of the Accel\u2019Rate compared to the Player Load. This metric could be used to improve the estimation of whole-body mechanical load, easily accessible in sport training and competition settings.<\/jats:p>","DOI":"10.3390\/s21103398","type":"journal-article","created":{"date-parts":[[2021,5,14]],"date-time":"2021-05-14T03:28:36Z","timestamp":1620962916000},"page":"3398","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["A Novel Accelerometry-Based Metric to Improve Estimation of Whole-Body Mechanical Load"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6277-8051","authenticated-orcid":false,"given":"Enzo","family":"Hollville","sequence":"first","affiliation":[{"name":"French Institute of Sport (INSEP), Laboratory Sport, Expertise and Performance, EA7370 Paris, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Antoine","family":"Couturier","sequence":"additional","affiliation":[{"name":"French Institute of Sport (INSEP), Laboratory Sport, Expertise and Performance, EA7370 Paris, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0377-2060","authenticated-orcid":false,"given":"Ga\u00ebl","family":"Guilhem","sequence":"additional","affiliation":[{"name":"French Institute of Sport (INSEP), Laboratory Sport, Expertise and Performance, EA7370 Paris, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Giuseppe","family":"Rabita","sequence":"additional","affiliation":[{"name":"French Institute of Sport (INSEP), Laboratory Sport, Expertise and Performance, EA7370 Paris, France"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,5,13]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1095","DOI":"10.1055\/s-0034-1375695","article-title":"The evolution of physical and technical performance parameters in the English Premier League","volume":"35","author":"Barnes","year":"2014","journal-title":"Int. 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