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Spatiotemporal lower-limb asymmetries during stair descent in athletes following anterior cruciate ligament reconstruction
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- Liebermann, Dario G. (author)
- Dept. of Physical Therapy, Stanley Steyer School of Health Professions, Faculty of Medicine, Tel Aviv University, Israel
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- Markström, Jonas L., 1985- (author)
- Umeå universitet,Avdelningen för fysioterapi
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- Selling, Jonas, 1980- (author)
- Umeå universitet,Avdelningen för fysioterapi
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- Dept of Physical Therapy, Stanley Steyer School of Health Professions, Faculty of Medicine, Tel Aviv University, Israel Avdelningen för fysioterapi (creator_code:org_t)
- Elsevier, 2024
- 2024
- English.
- In: Journal of Electromyography & Kinesiology. - : Elsevier. - 1050-6411 .- 1873-5711. ; 75
- Journal article (peer-reviewed)
Abstract
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- Purpose: This study evaluated motor control recovery at different times following anterior cruciate ligament reconstruction (ACLR) by investigating lower-limb spatiotemporal symmetry during stair descent performances.Methods: We used a cross-sectional design to compare asymptomatic athletes (Controls, n = 18) with a group of people with ACLR (n = 49) divided into three time-from-ACLR subgroups (Early: <6 months, n = 17; Mid: 6–18 months, n = 16; Late: ≥18 months, n = 16). We evaluated: “temporal symmetry” during the stance subphases (single-support, first and second double-support) and “spatial symmetry” for hip-knee-ankle intra-joint angular displacements during the stance phase using a dissimilarity index applied on superimposed 3D phase plots.Results: We found significant between-group differences in temporal variables (p ≤ 0.001). Compared to Controls, both Early and Mid (p ≤ 0.05) showed asymmetry in the first double-support time (longer for their injured vs. non-injured leg), while Early generally also showed longer durations in all other phases, regardless of stepping leg. No statistically significant differences were found for spatial intra-joint symmetry between groups.Conclusion: Temporal but not spatial asymmetry in stair descent is often present early after ACLR; it may remain for up to 18 months and may underlie subtle intra- and inter-joint compensations. Spatial asymmetry may need further exploration.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Hälsovetenskap -- Sjukgymnastik (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Health Sciences -- Physiotherapy (hsv//eng)
Keyword
- ACL injury
- Procrustes analysis
- Return-to-sport
- Spatiotemporal features
- Stair descent
Publication and Content Type
- ref (subject category)
- art (subject category)
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