| Titre : | Type of measurement used influences central and peripheral contributions to quadriceps weakness after anterior cruciate ligament (ACL) reconstruction (2020) |
| Auteurs : | Steven A. Garcia ; Kazandra M. Rodriguez ; Chandramouli Krishnan ; Riann M. Palmieri-Smith |
| Type de document : | Article |
| Dans : | Physical therapy in sport (Vol. 46, November 2020) |
| Article en page(s) : | p. 14-22 |
| Note générale : | https://doi.org/10.1016/j.ptsp.2020.08.001 |
| Langues: | Anglais |
| Descripteurs : |
HE Vinci Atrophie ; Force musculaire ; Fragilité ; Genou ; Muscle quadriceps fémoral ; Reconstruction du ligament croisé antérieur |
| Résumé : |
Objective
The relative contribution of muscle size and voluntary activation (VA) on quadriceps strength after anterior cruciate ligament (ACL) reconstruction remains inconclusive. Here, we aimed to determine the contributions of muscle size and VA on quadriceps strength in ACL-reconstructed patients and determine if contributions were similar if unilateral outcomes (i.e. ACL-reconstructed limb) or the LSI was used. Design: A cross-sectional study. Setting A university research laboratory. Participants Sixteen individuals 6–12 months after ACL reconstruction (Age: 22.3 ± 6.0yr, Height: 1.7 ± 0.1 m, Mass: 68.7 ± 11.5 kg) were recruited. Main outcome measures Quadriceps isometric strength and VA, via the interpolated triplet technique, were assessed bilaterally. Ultrasound images were acquired of the vastus lateralis to calculate cross-sectional area (CSA) in both legs. LSI’s were computed for all variables by expressing values of the reconstructed leg as a percent of the non-reconstructed leg. Separate stepwise linear regressions were performed to examine the contribution of VA and CSA on quadriceps strength. Model 1 used LSI for all outcomes and model 2 used outcomes from the reconstructed leg. Results We observed between limb deficits of 27.78% in quadriceps strength, 13.61% in vastus lateralis CSA, and 13.18% in VA (P Conclusions The contributions of VA and CSA on quadriceps PT differed greatly if LSI or reconstructed leg outcomes were used. Evaluation of VA and CSA in unison may be provide a more holistic understanding of the sources of muscle weakness after ACL reconstruction. |
| Disponible en ligne : | Oui |
| En ligne : | https://login.ezproxy.vinci.be/login?url=https://www.sciencedirect.com/science/article/pii/S1466853X20304843#! |
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