Single- and Dual-Task Gait Performance in Patients With Open-Angle Glaucoma: A Cross-sectional Study
To investigate gait kinematics during single- and dual-task walking in glaucoma patients compared with healthy controls. Nineteen glaucoma patients (10 females, 9 males) and 30 healthy controls (17 females, 13 males) participated in this cross-sectional study. Spatiotemporal gait parameters (e.g., s...
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Veröffentlicht in: | Translational vision science & technology 2023-11, Vol.12 (11), p.31-31 |
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Zusammenfassung: | To investigate gait kinematics during single- and dual-task walking in glaucoma patients compared with healthy controls.
Nineteen glaucoma patients (10 females, 9 males) and 30 healthy controls (17 females, 13 males) participated in this cross-sectional study. Spatiotemporal gait parameters (e.g., stride length, velocity, minimum toe clearance [MTC]) were assessed using inertial measurement units (sampling frequency 100 Hz) during single-task walking and dual-task walking at a comfortable velocity. During dual-task walking, participants walked and concurrently performed different cognitive tasks in a random order: (i) reaction time task, (ii) N-Back-task, and (iii) letter fluency task with two difficulty levels, respectively. Repeated measures analyses of covariance (Group × Condition) were conducted to analyze the data.
A significant effect of group was found for the coefficient of variation (CoV) of the MTC, F(1,39) = 4.504, P = 0.040, \({\rm{\eta }}_{\rm{p}}^2\) = 0.104, with higher values in glaucoma patients. Based on the effect sizes, a main effect of group was also found for the MTC, F(1,39) = 2.668, P = 0.110, \({\rm{\eta }}_{\rm{p}}^2\) = 0.064, and the MTCCoV dual-task costs, F(1,38) = 3.225, P = 0.08, \({\rm{\eta }}_{\rm{p}}^2\) = 0.078, which was lower and higher, respectively, in glaucoma patients.
The present study revealed a significantly higher MTC variability as well as medium effect sizes for a lower MTC and higher MTC dual-task costs in glaucoma patients compared with healthy controls, which might be related to a higher risk of falling owing to tripping.
The minimum toe clearance might mirror disease-related changes in walking performance and might have prognostic value for assessing fall risk in glaucoma patients. |
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ISSN: | 2164-2591 2164-2591 |
DOI: | 10.1167/tvst.12.11.31 |