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The effectiveness of an exercise programme on knee loading, muscle co-contraction, and pain in patients with medial knee osteoarthritis : A pilot study

Al-Khlaifat, L, Herrington, LC, Hammond, A, Tyson, SF and Jones, R 2016, 'The effectiveness of an exercise programme on knee loading, muscle co-contraction, and pain in patients with medial knee osteoarthritis : A pilot study' , The Knee, 23 (1) , pp. 63-69.

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Abstract

Background: Knee loading, muscle co-contraction, and pain are increased in knee osteoarthritis (OA). Exercises decreased pain in knee OA, yet OA is a mechanical disease and biomechanical changes need to be explored as well. Therefore, this study aims to investigate the effectiveness of an exercise programme on these outcomes in people with medial knee osteoarthritis. Methods: Cohort pilot study design. Nineteen participants with knee OA attended group exercise sessions, integrated with self-management education, once a week for six weeks, with additional home exercises. Outcomes assessed pre- and post-exercise programme were: External Knee Adduction Moment (EKAM), Knee Adduction Angular Impulse (KAAI), knee antagonist muscle co-contraction during gait, and the pain-subscale of the Knee injury and Osteoarthritis Outcome Score (KOOS). Results: Fourteen participants completed the study. Post-exercise intervention, the EKAM and KAAI did not change significantly (p= 0.21–0.7, p = 0.56, respectively). Muscle co-contraction between the vastus-lateralis and biceps-femoris muscles decreased in early-stance (64.78 (44.35) compared to 38.10 (23.10), p = 0.01) andmid-stance (27.62 (32.12) compared to 14.94 (17.40), p=0.04). A corresponding significant pain reduction was seen (p = 0.00) with a median and range of 51.50 (47.00–62.50) at week six compared to 34.50 (29.25– 41.25) at baseline. Conclusion: This is the first knownstudy to explore the effect of an exercise programmeon knee loading andmuscle co-contraction in knee OA. Although EKAMdid not change, the findings suggest a reduction in vastus-lateralis and biceps-femoris co-contraction might be a mechanism by which pain is reduced in knee OA.

Item Type: Article
Themes: Health and Wellbeing
Schools: Schools > School of Health Sciences > Centre for Health Sciences Research
Journal or Publication Title: The Knee
Publisher: Elsevier
Refereed: Yes
ISSN: 0968-0160
Related URLs:
Funders: The University of Jordan, The University of Salford
Depositing User: Prof Richard Jones
Date Deposited: 11 Jun 2015 13:10
Last Modified: 29 Feb 2016 15:37
URI: http://usir.salford.ac.uk/id/eprint/34929

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