Parkinson disease (PD) subjects with freezing gait (FOG) had increased variability in foot strike suggesting that in addition to stride length variability, foot strike variability could contribute to imbalance leading to falls. This according to a recent study that evaluated whether there was an objective gait correlate to the increased stumbling reported by many patients with gait freezing. 72 age-matched subjects (22 PD FOG, 27 PD no-FOG, and 23 healthy controls [HC]) were enrolled. Subjects with >1 fall/day or a Montreal Cognitive Assessment score <10 were excluded. Subjects walked at their normal pace, 8 lengths of a 20 × 4 foot pressure-sensor mat. Researchers found:
- Foot strike variability could contribute to imbalance leading to falls.
- Mean dimensions of foot strike were not significantly different between groups, but PD FOG subjects had increased step-to-step variability in foot strike as measured by the percent coefficient of variation (%CV) in foot strike length compared to PD no-FOG and HC, independent of stride velocity.
- In PD no-FOG subjects, fallers also had higher variability in foot strike length compared to non-fallers.
Shah J, Pillai L, Williams DK, et al. Increased foot strike variability in Parkinson's disease patients with freezing of gait. [Published online ahead of print May 1, 2018]. Parkinsonism Relat Disord. doi:10.1016/j.parkreldis.2018.04.032.
This Week's Must Reads
Hospital Readmission After Seizure Discharge, Neurology; ePub 2018 Dec 21; Blank, et al
VP Shunts and Post-Operative Complications Assessed, J Stroke Cerebrovasc Dis; ePub 2018 Dec 20; Linzey, et al
Disparities in Inter-Hospital Helicopter Transport, J Stroke Cerebrovasc Dis; ePub 2018 Dec 11; Sarrazin, et al
Mild-to-Moderate OSA Linked with Hypertension, Sleep; ePub 2018 Dec 22; Vgontzas, et al
Aspirin Reduces Stroke Risk in Women with Prior HDP, Neurology; ePub 2018 Dec 26; Miller, Boehme, et al
Must Reads in Movement Disorders
Study Compares 2 Cognitive Assessment Tools, Mov Disord; ePub 2018 Dec 10; Hendershott, et al
White Matter Differences Between ET and PD, Neurology; ePub 2018 Nov 30; Juttukonda, et al
Physical Activity and Clinical Progression in PD, Parkinsonism Relat Disord; ePub 2018 Dec 10; Amara, et al
Analyzing the Spectrum of Visual Symptoms in PD , Front Neurol; ePub 2018 Nov 27; Barrell, et al
Treadmill Walking Improved Forward Walking in PD, J Neurol Phys Ther; 2019 Jan; Rawson, McNeely, et al