Greater Cognitive-Motor Interference Among Patients After Anterior Cruciate Ligament Reconstruction Compared With...

Area of Science:

• Neuroscience
• Sports Medicine
• Rehabilitation Science

Background:

• Chaotic sports environments demand concurrent cognitive and motor skills.
• Cognitive-motor interference (CMi) occurs when performing these tasks simultaneously, potentially increasing injury risk.
• Central nervous system adaptations post-anterior cruciate ligament (ACL) rupture may heighten CMi susceptibility, contributing to secondary ACL injuries.

Purpose of the Study:

• To determine if patients after ACL reconstruction (ACLR) experience greater CMi compared to non-injured controls.
• To assess CMi during a drop vertical jump (DVJ) with added cognitive tasks.
• To explore the influence of sex on CMi in ACLR patients.

Main Methods:

• A controlled laboratory study compared 40 ACLR patients with 40 non-injured controls.
• Participants performed DVJs with and without secondary cognitive tasks (memory, attention, decision-making, inhibition).
• Outcomes included cognitive task accuracy and motor performance (jump height, ground reaction force), with isolated cognitive tests used as covariates.

Main Results:

• ACLR patients demonstrated significantly greater CMi than controls.
• This manifested as poorer cognitive recall, more incorrect motor actions, and reduced jump height in the ACLR group.
• No significant differences were found in ground reaction force or between sexes, and isolated cognitive performance did not influence the results.

Conclusions:

• Patients following ACLR exhibit heightened cognitive-motor interference, indicating neurocognitive dysfunction.
• This CMi is independent of isolated cognitive abilities.
• Integrating cognitive and dual-task training into ACLR rehabilitation is recommended to prepare athletes for dynamic sporting demands and reduce secondary injury risk.