ArticlePloS one2014
Could local dynamic stability serve as an early predictor of falls in patients with moderate neurological gait disorders? A reliability and comparison study in healthy individuals and in patients with paresis of the lower extremities.
Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
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Who cites it
21 citing papers in PubMed, 71 citations in OpenAlex.
- The effects of walking speed and mobile phone use on the walking dynamics of young adults.Scientific reports · 2021Trial
- Altered regularity and stability of multi-finger force production in individuals with mild cognitive impairment.Frontiers in human neuroscience · 2026Article
- Dynamic Stability Analysis of Progressive Supranuclear Palsy Affected Gait Using Lyapunov Floquet Theory.IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society · 2025Article
- Validity of Linear and Nonlinear Measures of Gait Variability to Characterize Aging Gait with a Single Lower Back Accelerometer.Sensors (Basel, Switzerland) · 2024Article
- Walk Longer! Using Wearable Inertial Sensors to Uncover Which Gait Aspects Should Be Treated to Increase Walking Endurance in People with Multiple Sclerosis.Sensors (Basel, Switzerland) · 2024Article
- Effects of the kinematic variable, time delay and data length on test-retest reliability of the maximal Lyapunov exponent of human walking.Royal Society open science · 2024Article
- Effects of metronome walking on long-term attractor divergence and correlation structure of gait: a validation study in older people.Scientific reports · 2024Article
- Datasets for learning of unknown characteristics of dynamical systems.Scientific data · 2023Article
- Feasibility of Sensor Technology for Balance Assessment in Home Rehabilitation Settings.Sensors (Basel, Switzerland) · 2021Article
- Measuring Gait Stability in People with Multiple Sclerosis Using Different Sensor Locations and Time Scales.Sensors (Basel, Switzerland) · 2021Article
- Fuzziness of muscle synergies in patients with multiple sclerosis indicates increased robustness of motor control during walking.Scientific reports · 2020Article
- Hardware/Software Co-design of Fractal Features based Fall Detection System.Sensors (Basel, Switzerland) · 2020Article
- Assessment of Local Dynamic Stability in Gait Based on Univariate and Multivariate Time Series.Computational and mathematical methods in medicine · 2019Article
- Article
- Challenging human locomotion: stability and modular organisation in unsteady conditions.Scientific reports · 2018Article
- Intra-rater reliability of hip abductor isometric strength testing in a standing position in older fallers and non-fallers.European review of aging and physical activity : official journal of the European Group for Research into Elderly and Physical Activity · 2018Article
- The Maximum Lyapunov Exponent During Walking and Running: Reliability Assessment of Different Marker-Sets.Frontiers in physiology · 2018Article
- Local Stability of the Trunk in Patients with Degenerative Cerebellar Ataxia During Walking.Cerebellum (London, England) · 2017Article
- Evaluation of hip abductor and adductor strength in the elderly: a reliability study.European review of aging and physical activity : official journal of the European Group for Research into Elderly and Physical Activity · 2017Article
- The acute effects of targeted abdominal muscle activation training on spine stability and neuromuscular control.Journal of neuroengineering and rehabilitation · 2016Article
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Falls while walking are frequent in patients with muscular dysfunction resulting from neurological disorders. Falls induce injuries that may lead to deconditioning and disabilities, which further increase the risk of falling. Therefore, an early gait stability index would be useful to evaluate patients in order to prevent the occurrence of future falls. Derived from chaos theory, local dynamic stability (LDS), defined by the maximal Lyapunov exponent, assesses the sensitivity of a dynamic system to small perturbations. LDS has already been used for fall risk prediction in elderly people. The aim of the present study was to provide information to facilitate future researches regarding gait stability in patients with neurological gait disorders. The main objectives were 1) to evaluate the intra-session repeatability of LDS in patients and 2) to assess the discriminative power of LDS to differentiate between healthy individuals and neurological patients. Eighty-three patients with mild to moderate neurological disorders associated with paresis of the lower extremities and 40 healthy controls participated in the study. The participants performed 2×30 s walking wearing a 3D accelerometer attached to the lower back, from which 2×35 steps were extracted. LDS was defined as the average exponential rate of divergence among trajectories in a reconstructed state-space that reflected the gait dynamics. LDS assessed along the medio-lateral axis offered the highest repeatability and discriminative power. Intra-session repeatability (intraclass correlation coefficient between the two repetitions) in the patients was 0.89 and the smallest detectable difference was 16%. LDS was substantially lower in the patients than in the controls (33% relative difference, standardized effect size 2.3). LDS measured in short over-ground walking tests seems sufficiently reliable. LDS exhibits good discriminative power to differentiate fall-prone individuals and opens up the possibility of future clinical applications for better prediction of fall risk in neurological patients.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.