Postural stability during visual-based cognitive and motor dual-tasks after ACLR.
Document Type
Article
Publication Title
Journal of science and medicine in sport / Sports Medicine Australia
Abstract
OBJECTIVES: Determine the effect of visual-based motor and cognitive dual tasking on postural stability in those with anterior cruciate ligament reconstruction relative to matched controls.
DESIGN: Cohort study.
METHODS: Fourteen volunteers with history of anterior crucaite ligament reconstruction were matched with fourteen healthy controls. Participants performed single leg balance tasks under 4 conditions: (1) single leg balance with eyes-open, (2) single leg balance while catching a ball (dual-motor), (3) single leg balance while repeating a string of numbers in reverse order after viewing them (dual-cognitive) and (4) single leg balance with eyes-closed. Participants completed several patient-reported outcomes of knee function. Mixed effects models were used to identify group differences on the center of pressure measures of ellipse area and root-mean-squared excursion (medial-lateral and anterior-posterior). The mixed models included subject pair as a random factor and group (control, anterior cruciate liagement reconstruction), balance condition (eyes-open, eyes-closed, dual-cognitive, and dual-motor), and group*condition as fixed effects. Tukey post-hoc pairwise comparisons were performed for significant interaction and main effects with an α=0.05.
RESULTS: A significant group by condition interaction was observed for ellipse area and medial-lateral root-mean-squared excursion. The anterior cruciate ligament reconstruction group had higher ellipse area (p=0.002, d=0.44) and medial-lateral root-mean-squared excursion (p< 0.001, d=0.49).
CONCLUSIONS: Postural stability is greatly impaired under eyes-closed and dual-motor conditions relative to eyes-open. Anterior cruciate ligament reconstructed individuals have greater postural instability during the dual-cognitive condition that may indicate unique neural processing deficits remain following anterior cruciate ligament reconstruction.
First Page
146
Last Page
151
DOI
10.1016/j.jsams.2020.07.008
Publication Date
2-1-2021
Recommended Citation
Miko SC, Simon JE, Monfort SM, Yom JP, Ulloa S, Grooms DR. Postural stability during visual-based cognitive and motor dual-tasks after ACLR. J Sci Med Sport. 2021 Feb;24(2):146-151. doi: 10.1016/j.jsams.2020.07.008. Epub 2020 Jul 28. Erratum in: J Sci Med Sport. 2022 Jun;25(6):540. doi: 10.1016/j.jsams.2022.03.015. PMID: 32773174.