کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5042065 | 1474213 | 2017 | 10 صفحه PDF | دانلود رایگان |
- Gait initiation (GI) performance is evaluated in a cohort with recent concussion.
- Concussed patients exhibit altered postural adjustments during gait initiation.
- These alterations are reflective of impaired sensorimotor control.
Gait initiation is a useful surrogate measure of supraspinal motor control mechanisms but has never been evaluated in a cohort following concussion. The aim of this study was to quantify the preparatory postural adjustments (PPAs) of gait initiation (GI) in fifteen concussion patients (4 females, 11 males) in comparison to a group of fifteen age- and sex-matched controls. All participants completed variants of the GI task where their dominant and non-dominant limbs as the 'stepping' and 'support' limbs. Task performance was quantified using the centre of pressure (COP) trajectory of each foot (computed from a force plate) and a surrogate of the centre of mass (COM) trajectory (estimated from an inertial measurement unit placed on the sacrum).Concussed patients exhibited decreased COP excursion on their dominant foot, both when it was the stepping limb (sagittal plane: 9.71Â mm [95% CI: 8.14-11.27Â mm] vs 14.9Â mm [95% CI: 12.31-17.49Â mm]; frontal plane: 36.95Â mm [95% CI: 30.87-43.03Â mm] vs 54.24Â mm [95% CI: 46.99-61.50Â mm]) and when it was the support limb (sagittal plane: 10.43Â mm [95% CI: 8.73-12.13Â mm] vs 18.13Â mm [95% CI: 14.92-21.35Â mm]; frontal plane: 66.51Â mm [95% CI: 60.45-72.57Â mm] vs 88.43Â mm [95% CI: 78.53-98.32Â mm]). This was reflected in the trajectory of the COM, wherein concussion patients exhibited lower posterior displacement (19.67Â mm [95% CI: 19.65Â mm-19.7Â mm]) compared with controls (23.62Â mm [95% CI: 23.6-23.64]). On this basis, we conclude that individuals with concussion display deficits during a GI task which are potentially indicative of supraspinal impairments in motor control.
Journal: Human Movement Science - Volume 52, April 2017, Pages 160-169