{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,8]],"date-time":"2026-02-08T16:58:16Z","timestamp":1770569896760,"version":"3.49.0"},"reference-count":60,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2023,1,21]],"date-time":"2023-01-21T00:00:00Z","timestamp":1674259200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Symmetry"],"abstract":"<jats:p>In recent years, many studies on the safe return to sport (RTS) have been published, but there are still no clear and validated guidelines. After ACL reconstruction between limbs, asymmetry of muscle strength affects knee mechanics during walking and running, and asymmetrical joint kinematics and kinetics are considered as a strong risk factor of musculoskeletal injury. Therefore, proper diagnosis of any motor deficits remaining after ACL reconstruction seems particularly important. The aim of this study was to analyze how many tests should be included in the RTS test battery and which of them are most indicative for functional deficits related to anterior cruciate ligament (ACL) reconstruction. Sixty-five male football players (age 18\u201325 years) were divided into three groups: ACL group\u2014after ACL rupture and reconstruction, mild injury group\u2014post mild lower limb injuries, and the control group\u2014without injuries. They performed five tests: Functional Movement Screen, Tuck Jump Assessment, Y-balance Test, Hop Test for Distance, and Isokinetic Test. The Composite Score of Readiness (CSR) index was calculated and expressed as the sum of z-scores. The multiple regression model for all tests was calculated, and then redundant variables were excluded. We observed that all tests significantly influenced the final CSR index. The Y-balance Test, Tuck Jump Assessment, and Isokinetic Test for knee flexion influenced the final CSR index the most, which means that these tests are greatly indicative of functional deficits related to ACL reconstruction. The strength of the extensor (quadriceps) muscle and the quadriceps\/hamstring ratio appeared to be non-sensitive for testing functional deficits related to ACL reconstruction. If the test battery includes 4\u20135 tests, it better differentiates the athletes following ACL reconstruction from those after mild injuries, even if they all were cleared to play.<\/jats:p>","DOI":"10.3390\/sym15020298","type":"journal-article","created":{"date-parts":[[2023,1,25]],"date-time":"2023-01-25T03:21:54Z","timestamp":1674616914000},"page":"298","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Composite Score of Readiness (CSR) as a Data Reduction Technique for Monitoring the RTS Process in Footballers following ACL Reconstruction"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0589-0554","authenticated-orcid":false,"given":"\u0141ukasz","family":"Oleksy","sequence":"first","affiliation":[{"name":"Faculty of Health Sciences, Department of Physiotherapy, Jagiellonian University Medical College Krakow, 31-008 Krakow, Poland"},{"name":"Oleksy Medical & Sport Sciences, 37-100 \u0141a\u0144cut, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4366-5091","authenticated-orcid":false,"given":"Anna","family":"Mika","sequence":"additional","affiliation":[{"name":"Institute of Clinical Rehabilitation, University of Physical Education in Krak\u00f3w, 31-571 Krak\u00f3w, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Renata","family":"Kielnar","sequence":"additional","affiliation":[{"name":"Institute of Health Sciences, Medical College of Rzesz\u00f3w University, 35-315 Rzesz\u00f3w, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mi\u0142osz","family":"Szczud\u0142o","sequence":"additional","affiliation":[{"name":"Center of Sport and Recreation, University of Rzeszow, 35-315 Rzesz\u00f3w, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Henryk","family":"Racheniuk","sequence":"additional","affiliation":[{"name":"Institute of Physiotherapy, Faculty of Physical Education and Physiotherapy, Opole University of Technology, 46-020 Opole, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1875-2510","authenticated-orcid":false,"given":"Olga","family":"Adamska","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics and Rehabilitation, Medical Faculty, Medical University of Warsaw, 02-091 Warszawa, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marian","family":"Rzepko","sequence":"additional","affiliation":[{"name":"Institute of Physical Culture Sciences, Rzesz\u00f3w University, 35-310 Rzesz\u00f3w, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6283-5500","authenticated-orcid":false,"given":"Aleksandra","family":"Kr\u00f3likowska","sequence":"additional","affiliation":[{"name":"Ergonomics and Biomedical Monitoring Laboratory, Department of Physiotherapy, Faculty of Health Sciences, Wroc\u0142aw Medical University, 50-367 Wroc\u0142aw, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0271-4950","authenticated-orcid":false,"given":"Pawe\u0142","family":"Reichert","sequence":"additional","affiliation":[{"name":"Department of Trauma Surgery, Clinical Department of Trauma and Hand Surgery, Faculty of Medicine, Wroc\u0142aw Medical University, 50-367 Wroc\u0142aw, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4916-1206","authenticated-orcid":false,"given":"Robert","family":"Prill","sequence":"additional","affiliation":[{"name":"Center of Orthopaedics and Traumatology, University of Brandenburg an der Havel Theodor Fontane, 14770 Brandenburg, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5633-8153","authenticated-orcid":false,"given":"Artur","family":"Stolarczyk","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics and Rehabilitation, Medical Faculty, Medical University of Warsaw, 02-091 Warszawa, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,1,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"e77","DOI":"10.1016\/j.asmr.2021.10.025","article-title":"Rehabilitation and Return to Sport Testing After Anterior Cruciate Ligament Reconstruction: Where Are We in 2022?","volume":"4","author":"Gokeler","year":"2022","journal-title":"Arthrosc. 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