Visual processing and interference performance influences on knee angular impulse in ACLR individuals: a cognitive-biomechanical analysis of drop-jumps.

Λεπτομέρειες βιβλιογραφικής εγγραφής
Τίτλος: Visual processing and interference performance influences on knee angular impulse in ACLR individuals: a cognitive-biomechanical analysis of drop-jumps.
Συγγραφείς: Santamaria-Guzman K; School of Kinesiology, Auburn University, Auburn, United States. kgs0071@auburn.edu., Holmes H; Track and Field, High Point University, High Point, United States., Kosek J; School of Health Sciences, University of Evansville, Evansville, United States., Peoples B; School of Kinesiology, Auburn University, Auburn, United States., Harrison K; School of Kinesiology, Auburn University, Auburn, United States., Campos-Vargas S; School of Kinesiology, Auburn University, Auburn, United States., Weimar W; School of Kinesiology, Auburn University, Auburn, United States., Neely K; School of Kinesiology, Auburn University, Auburn, United States., Siles-Canales F; Human Movement Science Research Center, University of Costa Rica, San José, Costa Rica., Roper J; School of Kinesiology, Auburn University, Auburn, United States. jroper@auburn.edu.
Πηγή: Archives of orthopaedic and trauma surgery [Arch Orthop Trauma Surg] 2026 May 16; Vol. 146 (1). Date of Electronic Publication: 2026 May 16.
Τύπος έκδοσης: Journal Article
Γλώσσα: English
Στοιχεία περιοδικού: Publisher: Springer Verlag Country of Publication: Germany NLM ID: 9011043 Publication Model: Electronic Cited Medium: Internet ISSN: 1434-3916 (Electronic) Linking ISSN: 09368051 NLM ISO Abbreviation: Arch Orthop Trauma Surg Subsets: MEDLINE
Imprint Name(s): Publication: Berlin : Springer Verlag
Original Publication: Berlin : Springer International, c1989-
Ιατρικοί όροι (MeSH): Cognition*/physiology , Anterior Cruciate Ligament Injuries*/physiopathology , Knee Joint*/physiopathology , Visual Perception*/physiology , Athletic Performance*/physiology, Humans ; Female ; Biomechanical Phenomena ; Young Adult ; Processing Speed ; Reaction Time ; Case-Control Studies
Περίληψη: Introduction: Visual processing speed and cognitive interference control are critical for athletic performance and Anterior Cruciate Ligament (ACL) injury risk. However, how these cognitive functions relate to biomechanical performance after Anterior Cruciate Ligament Reconstruction (ACLR) remains unclear. This gap is clinically relevant given persistent re-injury rates of 20-25% in young athletes returning to sport, suggesting that rehabilitation may insufficiently address cognitive demands. This study examined cognitive differences between ACLR individuals and controls during drop-jump tasks, and their relationship with knee angular impulse.
Materials and Methods: Thirty-two females (16 ACLR, 16 controls; 20 ± 1 years) completed cognitive assessments including the Stroop Color and Word Test, Trail Making Test, Digit Span Memory Test, and visual/auditory reaction time tests. Participants performed drop-jumps under four conditions: standard, choice, visual-cued, and audio-cued. Knee angular impulse was calculated for eccentric, concentric, and net phases. Binomial logistic regression identified cognitive predictors distinguishing groups, followed by factorial ANOVA to assess biomechanical differences. Spearman correlations examined relationships between cognition and knee angular impulse.
Results: Three cognitive variables distinguished groups: cognitive interference score, visual simple reaction time, and visual complex reaction time (χ²(3) = 55.090, p < 0.001). The ACLR group demonstrated faster visual reaction times but impaired interference control compared to controls. Biomechanically, ACLR participants showed lower eccentric knee angular impulse (p = 0.003, d=-0.37), indicating persistent protective strategies. Audio-cued conditions elicited higher eccentric impulse than standard and choice conditions. Minimal correlations between cognitive variables and eccentric knee angular impulse suggest independent (parallel) adaptations.
Conclusions: ACLR individuals exhibit distinct cognitive and biomechanical profiles characterized by enhanced visual reactivity, reduced interference control, and altered landing mechanics. The lack of association between domains indicates parallel adaptations, supporting rehabilitation approaches that independently target both cognitive function and biomechanical performance.
(© 2026. The Author(s).)
Competing Interests: Declarations. Conflict of interest: The authors declare no competing interests.
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Contributed Indexing: Keywords: Anterior cruciate ligament; Biomechanics; Cognition; Drop-Jump; Knee angular impulse; Neuro-motor control
Entry Date(s): Date Created: 20260516 Date Completed: 20260717 Latest Revision: 20260717
Update Code: 20260717
PubMed Central ID: PMC13179913
DOI: 10.1007/s00402-026-06353-w
PMID: 42142173
Βάση Δεδομένων: MEDLINE