{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T02:34:52Z","timestamp":1760150092785,"version":"build-2065373602"},"reference-count":46,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2023,10,5]],"date-time":"2023-10-05T00:00:00Z","timestamp":1696464000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JFMK"],"abstract":"<jats:p>Injury in sports is an occurrence that prevents athletes from participating in training and competitions and has an incidence of 8.1 injuries\/1000 h of practice. This translates into a cost and also into danger, especially if the event is repeated, for the health of the athlete; the injury certainly has a multifactorial causality. On the other hand, having instruments that can represent an alarm could be helpful for those involved in sports science. We used a specifically designed instrument, presented in a previous work, which shows excellent reliability and repeatability in measuring the strength of the knee flexors and extensors to test 107 players belonging to three different teams playing in the Italian Serie A. We took three measurements, beginning of the season, mid-season, and close to the end of the season. This retrospective study on 107 professional soccer players demonstrates that isometric force-related parameters of the knee extensors and flexors are associated with the risk of injury to lower limbs. Logistic regression evidenced a significant correlation between the parameter indicating the imbalance of the force between the flexors of the two limbs (p\u22640.05, OR = 1.089) and the occurrence of injuries. Survival analyses (p\u22640.001) evidenced a correlation between the population survival time and the injury incidence. We demonstrated that the analysis of the strength imbalance is correlated with injury occurrence, but it is well known that sports injuries are a multifactorial event; so, they cannot be predicted by only one parameter. However, the method proposed in this paper could represent a useful tool for sport scientists.<\/jats:p>","DOI":"10.3390\/jfmk8040141","type":"journal-article","created":{"date-parts":[[2023,10,5]],"date-time":"2023-10-05T03:05:19Z","timestamp":1696475119000},"page":"141","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Application of a Custom Device to Measure Isometric Knee Strength: Possible Injury Correlation in Professional Soccer (Football) Players"],"prefix":"10.3390","volume":"8","author":[{"given":"Paolo","family":"Cigni","sequence":"first","affiliation":[{"name":"Auxilium Vitae Volterra Spa, Borgo San Lazzaro 5, 56048 Volterra, PI, Italy"},{"name":"Italian Society of Nutrition Sports and Well-Being (SINSeB), Via Luigi Cherubini, 2, 50053 Empoli, FI, Italy"},{"name":"Fisioclinic Dott. Paolo Cigni, Via Porta Massetana 1, 56045 Pomarance, PI, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tommaso","family":"Minuti","sequence":"additional","affiliation":[{"name":"The BioRobotics Institute, Scuola Superiore Sant\u2019Anna, 56127 Pisa, Italy"},{"name":"Department of Excellence in Robotics & AI, Scuola Superiore Sant\u2019Anna, 56127 Pisa, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0760-052X","authenticated-orcid":false,"given":"Andrea","family":"Mannini","sequence":"additional","affiliation":[{"name":"IRCCS Fondazione Don Carlo Gnocchi ONLUS, 50143 Firenze, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alessandro","family":"Cucini","sequence":"additional","affiliation":[{"name":"Fisioclinic Dott. Paolo Cigni, Via Porta Massetana 1, 56045 Pomarance, PI, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michele","family":"Costagli","sequence":"additional","affiliation":[{"name":"Fisioclinic Dott. Paolo Cigni, Via Porta Massetana 1, 56045 Pomarance, PI, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Stefano","family":"Rapetti","sequence":"additional","affiliation":[{"name":"A.C. Milan, Via Aldo Rossi 8, 20149 Milano, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luca","family":"Alimonta","sequence":"additional","affiliation":[{"name":"Sporting Club Madonna di Campiglio, Via Monte Spinale 16, 38036 Madonna di Campiglio, TN, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0562-0597","authenticated-orcid":false,"given":"Erika","family":"Cione","sequence":"additional","affiliation":[{"name":"Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende, CS, Italy"},{"name":"Galascreen Laboratories, University of Calabria, 87036 Rende, CS, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1668-7690","authenticated-orcid":false,"given":"Roberto","family":"Cannataro","sequence":"additional","affiliation":[{"name":"Italian Society of Nutrition Sports and Well-Being (SINSeB), Via Luigi Cherubini, 2, 50053 Empoli, FI, Italy"},{"name":"Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende, CS, Italy"},{"name":"Galascreen Laboratories, University of Calabria, 87036 Rende, CS, Italy"},{"name":"Research Division, Dynamical Business & Science Society\u2014DBSS International SAS, Bogot\u00e1 110311, Colombia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Leonardo","family":"Ricotti","sequence":"additional","affiliation":[{"name":"The BioRobotics Institute, Scuola Superiore Sant\u2019Anna, 56127 Pisa, Italy"},{"name":"Department of Excellence in Robotics & AI, Scuola Superiore Sant\u2019Anna, 56127 Pisa, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,10,5]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"711","DOI":"10.1136\/bjsports-2018-099577","article-title":"Epidemiology of injuries in professional football: A systematic review and meta-analysis","volume":"54","author":"Croix","year":"2020","journal-title":"Br. 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Living"}],"container-title":["Journal of Functional Morphology and Kinesiology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2411-5142\/8\/4\/141\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T21:05:28Z","timestamp":1760130328000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2411-5142\/8\/4\/141"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,10,5]]},"references-count":46,"journal-issue":{"issue":"4","published-online":{"date-parts":[[2023,12]]}},"alternative-id":["jfmk8040141"],"URL":"https:\/\/doi.org\/10.3390\/jfmk8040141","relation":{},"ISSN":["2411-5142"],"issn-type":[{"type":"electronic","value":"2411-5142"}],"subject":[],"published":{"date-parts":[[2023,10,5]]}}}