Type

Journal Article

Authors

Brian Caulfield
John Ryan
Liang Zhao
Cailbhe Doherty

Subjects

Physiotherapy & Sport

Topics
personal sensing control mechanisms inertial measurement biomechanics brain concussion gait postural balance kinetics

Concussion is associated with altered preparatory postural adjustments during gait initiation (2017)

Abstract 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 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: 9.71mm [95% CI: 8.14 to 11.27mm] vs 14.9mm [95%CI: 12.31 to 17.49mm]; frontal plane: 36.95mm [95% CI: 30.87 to 43.03mm] vs 54.24mm [95%CI: 46.99 to 61.50mm]) and when it was the support limb (sagittal plane: 10.43mm [95% CI: 8.73 to 12.13mm] vs 18.13mm [95%CI: 14.92 to 21.35mm]; frontal plane: 66.51mm [95% CI: 60.45 to 72.57mm] vs 88.43mm [95%CI: 78.53 to 98.32mm]). This was reflected in the trajectory of the COM, wherein concussion patients exhibited lower posterior displacement (19.67mm [95%CI: 19.65mm to 19.7mm]) compared with controls (23.62mm [95%CI: 23.6 to 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.
Collections Ireland -> University College Dublin -> Insight Research Collection

Full list of authors on original publication

Brian Caulfield, John Ryan, Liang Zhao, Cailbhe Doherty

Experts in our system

1
Brian Caulfield
University College Dublin
Total Publications: 331
 
2
John Ryan
University College Dublin
Total Publications: 58
 
3
Liang Zhao
University College Dublin
Total Publications: 4
 
4
Cailbhe Doherty
University College Dublin
Total Publications: 45