Finding the needle in the haystack of isokinetic knee data: Random Forest modelling improves information about ACLR-related deficiencies

Simple item page
dc.contributor.authorNolte, Kevin
dc.contributor.authorGerharz, Alexander
dc.contributor.authorJaitner, Thomas
dc.contributor.authorKnicker, Axel J.
dc.contributor.authorAlt, Tobias
dc.date.accessioned2025-08-28T11:07:46Z
dc.date.available2025-08-28T11:07:46Z
dc.date.issued2024-12-22
dc.description.abstractThe difficulties of rehabilitation after anterior cruciate ligament (ACL) injuries, subsequent return-to-sport (RTS) let alone achieving pre-injury performance, are well known. Isokinetic testing is often used to assess strength capacities during that process. The aim of the present machine learning (ML) approach was to examine which isokinetic data differentiates athletes post ACL reconstruction (ACLR) and healthy controls. Two Random Forest models were trained from data of unilateral concentric and eccentric knee flexor and extensor tests (30°/s, 150°/s) of 366 male (63 post ACLR) as well as 183 female (72 post ACLR) athletes. Via a cross-validation predictive performance was evaluated and the Random Forest showed outstanding results for male (AUC = 0.90, sensitivity = 0.76, specificity = 0.88) and female (AUC = 0.92, sensitivity = 0.85, specificity = 0.89) athletes. The Accumulated Local Effects plot was used to determine the impact of single features on the predictive likelihood. For both male and female athletes, the ten most impactful features either referred to the disadvantageous (injured, non-dominant in control group) leg or to lateral differences. The eccentric hamstring work at 150°/s was identified as the most impactful single parameter. We see potential for improving the RTS process by incorporating and combining measures, which focus on hamstring strength, leg symmetry and contractional work.en
dc.identifier.urihttp://hdl.handle.net/2003/43888
dc.language.isoen
dc.relation.ispartofseriesJournal of sports sciences; 43(2)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectAnterior cruciate ligament reconstructionen
dc.subjectRehabilitationen
dc.subjectHamstringen
dc.subjectInterpretable machine learningen
dc.subjectRandom foresen
dc.subject.ddc796
dc.titleFinding the needle in the haystack of isokinetic knee data: Random Forest modelling improves information about ACLR-related deficienciesen
dc.typeText
dc.type.publicationtypeArticle
dcterms.accessRightsopen access
eldorado.dnb.deposittrue
eldorado.doi.registerfalse
eldorado.secondarypublicationtrue
eldorado.secondarypublication.primarycitationNolte, K., Gerharz, A., Jaitner, T., Knicker, A. J., & Alt, T. (2024). Finding the needle in the haystack of isokinetic knee data: Random Forest modelling improves information about ACLR-related deficiencies. Journal of Sports Sciences, 43(2), 173–181. https://doi.org/10.1080/02640414.2024.2435729
eldorado.secondarypublication.primaryidentifierhttps://doi.org/10.1080/02640414.2024.2435729

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Finding the needle in the haystack of isokinetic knee data Random Forest modelling improves information about ACLR-related deficiencies.pdf
Size:
1.23 MB
Format:
Adobe Portable Document Format
Description:
DNB
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
4.82 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Institut für Sport und Sportwissenschaft