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Does eccentric-concentric resistance training improve early functional outcomes compared to concentric resistance
Victoria Teissier1, Romain Leclercq2, Sandrine Schiano-Lomoriello3
1Université Paris, Laboratoire de Biologie Bioingénierie et Bioimagerie Ostéo-Articulaire (B3OA), UMR CNRS 7052, INSERM U1273, 10 Av de Verdun, 75010, Paris, France; Department of Orthopaedic Surgery, Hospital Cochin, APHP, Université Paris 5, Paris, France.
Background:
Total knee arthroplasty (TKA) is the preferred surgical treatment of end stage osteoarthritis of the knee. However, up to 20% of patients are dissatisfied after TKA. Moreover, kinesiophobia is negatively correlated with functional outcomes.
Research Question:
The aim of this study was to compare the effects of combined concentric-eccentric versus concentric program on muscular strength assessment and quality of life, after total knee arthroplasty in elderly people.
Method:
A prospective study including 20 subjects (72.1 ± 6.3 years), following a rehabilitation program after TKA was performed. Subjects were randomized in combined eccentricconcentric (ECC-CON, n = 10) versus concentric (CN, n = 10) early rehabilitation protocols. There were no significant differences between groups with respect to demographic data. Data were collected before and after protocol: performance-based physical function (timed up and go test, 10-meter walk test, isokinetic assessment), Selfreported physical function and quality of life (Lequesne-ISK, WOMAC, OAKHQOL) and kinesiophobia assessment (TSK-CF). The Gaussian distribution for the whole population of this study was tested by a Kolmogorov-Smirnov test. Statistical analysis was performed using non-parametric Mann-Whitney U or Fisher's exact probability test, as appropriate.
Results And Conclusion:
Performance-based physical function tests showed a significant improvement after early rehabilitation in the ECC-CON group for timed up and go (p = 0.0002) and 10-meter walk test (p = 0.001). Operated hamstring muscle peak torque was significantly improved in the ECC-CON group (p = 0.03). Self-reported physical function and quality of life tests were significantly better in the ECC-CON group for ISK (p = 0.03) and WOMAC (p = 0.04). Self-reported kinesiophobia significantly decreased after rehabilitation in both groups (p = 0.01) whilst there were no differences between groups. Early combined eccentric-concentric rehabilitation after TKA appears to be associated with improved outcomes compared to classic concentric rehabilitation protocols, on both physical function and quality of life. This information is new. Assessment and care of kinesiophobia should be considered in rehabilitation protocols standards.
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