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Published in: Knee Surgery, Sports Traumatology, Arthroscopy 12/2023

03-10-2023 | Fatigue | KNEE

Exercise-induced fatigue affects knee proprioceptive acuity and quadriceps neuromuscular function more in patients with ACL reconstruction or meniscus surgery than in healthy individuals

Authors: Sungwan Kim, Neal R. Glaviano, Jihong Park

Published in: Knee Surgery, Sports Traumatology, Arthroscopy | Issue 12/2023

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Abstract

Purpose

To observe how knee proprioceptive acuity and quadriceps neuromuscular function change during and after repeated isokinetic knee-extension exercise in patients with anterior cruciate ligament reconstruction (ACLR) or meniscus surgery.

Methods

Patients with ACLR or meniscus surgery and matched controls (n = 19 in each group) performed knee-flexion replication at 15° and 75°, and quadriceps peak torque (PT), central activation ratio (CAR) and rate of torque development (RTD) at baseline and immediately after every five sets of isokinetic knee-extension exercise (times 1–5).

Results

Compared to the baseline, the ACLR and control groups displayed errors in knee-flexion replication at 75° only at time 5 (115.9–155.6%; p ≤ 0.04, d ≥ 0.97), whereas the meniscus surgery group exhibited errors at all time points (142.5–265.6%; p ≤ 0.0003, d ≥ 1.4). Significant percentage reductions in quadriceps CAR were observed between times 4 and 5 in the ACLR group (–5.8%; p = 0.0002, d = 0.96), but not in the meniscus surgery (–1.4%; n.s.) and control (0.1%; n.s.) groups. Significant percentage reductions in quadriceps RTD were observed between times 4 and 5 in the ACLR (–24.2%; p = 0.007, d = 0.99) and meniscus surgery (–23.0%; p = 0.01, d = 0.85) groups, but not in the control group (–0.2%; n.s.).

Conclusion

Patients with ACLR or meniscus surgery displayed a greater loss in knee proprioceptive acuity and quadriceps neuromuscular function during and after exercise than healthy individuals. Evidence-based interventions to enhance exercise-induced fatigue resistance should be implemented following ACLR or meniscus surgery, aiming to prevent proprioceptive and neuromuscular changes within the knee joint and quadriceps.

Level of evidence

III.
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Metadata
Title
Exercise-induced fatigue affects knee proprioceptive acuity and quadriceps neuromuscular function more in patients with ACL reconstruction or meniscus surgery than in healthy individuals
Authors
Sungwan Kim
Neal R. Glaviano
Jihong Park
Publication date
03-10-2023
Publisher
Springer Berlin Heidelberg
Keyword
Fatigue
Published in
Knee Surgery, Sports Traumatology, Arthroscopy / Issue 12/2023
Print ISSN: 0942-2056
Electronic ISSN: 1433-7347
DOI
https://doi.org/10.1007/s00167-023-07596-5

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