PNF and Movement 2024; 22(2): 213-222
https://doi.org/10.21598/JKPNFA.2024.22.2.213
Effects of Early Body-weight Supported Treadmill Training on Strength, Pain, and Arthrogenic Muscle Inhibition after Knee Surgery
Jin-Ee Kim, P.T., M.Sc.1,2⋅Min-Seo Gu3⋅Jeong-Hoon Lee, P.T., M.Sc.1,4⋅Min-Hee Kim, P.T., Ph.D,5⋅Hyo-Yeol Lee, M.D., Ph.D.3†
1Physical Therapy and Rehabilitation Center, Eulji University Medical Center
2Department of Physical Therapy, Graduate School of Health and Welfare, Eulji University
3Department of Orthopaedic Surgery, Eulji University Medical Center, Eulji University College of Medicine
4Department of Physical Therapy, Graduate School of Eulji University
5Department of Physical Therapy, College of Health Science, Eulji University
Correspondence to: †Hyo-Yeol Lee (thebonedoctor@hanmail.net)
Received: June 10, 2024; Revised: June 15, 2024; Accepted: June 17, 2024; Published online: August 31, 2024.
© Korea Proprioceptive Neuromuscular Facilitation Association. All rights reserved.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Purpose: The purpose of this study was to evaluate the effects of early body-weight-supported treadmill training on quadriceps strength, knee pain, and arthrogenic muscle inhibition (AMI) after knee surgery.
Methods: Sixteen adults were selected. Seven patients in the experimental group performed body-weight-supported treadmill training, and nine patients in the control group performed general therapeutic exercise programs. Both groups received 20 minutes of neuromuscular electrical stimulation and 20 minutes of exercise therapy for two weeks. We measured quadriceps strength, visual analogue scale, and modified AMI classification grade before and after the intervention. Data were analyzed using the Mann-Whitney U test and Wilcoxon signed-rank test.
Results: Within the experimental group, significant differences were observed in quadriceps strength, visual analogue scale, and modified AMI classification grade. Significant differences were observed between the before- and after-intervention groups in quadriceps strength and visual analogue scale. However, no significant differences were found in the modified AMI classification.
Conclusion: The results of this study indicate that early body-weight-supported treadmill training may be an effective intervention for improving strength, reducing pain, and addressing arthrogenic muscle inhibition following knee surgery.
Keywords: Early body-weight treadmill training, Knee surgery, Arthrogenic muscle inhibition

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