A 77 GHz frequency-modulated continuous wave (FMCW) radar was utilized to extract biomechanical parameters for gait analysis in indoor scenarios. By preprocessing the collected raw radar data and eliminating environmental noise, a range-velocity-time (RVT) data cube encompassing the subjects' information was derived. The strongest signals from the torso in the velocity and range dimensions and the enveloped signal from the toe in the velocity dimension were individually separated for the gait parameters extraction. Then, six gait parameters, including step time, stride time, step length, stride length, torso velocity, and toe velocity, were measured. In addition, the Qualisys system was concurrently utilized to measure the gait parameters of the subjects as the ground truth. The reliability of the parameters extracted by the radar was validated through the application of the Wilcoxon test, the intraclass correlation coefficient (ICC) value, and Bland-Altman plots. The average errors of the gait parameters in the time, range, and velocity dimensions were less than 0.004 s, 0.002 m, and 0.045 m/s, respectively. This non-contact radar modality promises to be employable for gait monitoring and analysis of the elderly at home.
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http://dx.doi.org/10.3390/s24134184 | DOI Listing |
PLoS One
January 2025
Department of Kinesiology and Sport Sciences, University of Miami, Coral Gables, FL, United States of America.
The KinaTrax markerless motion capture system, used extensively in the analysis of baseball pitching and hitting, is currently being adapted for use in clinical biomechanics. In clinical and laboratory environments, repeatability is inherent to the quality of any diagnostic tool. The KinaTrax system was assessed on within- and between-session reliability for gait kinematic and spatiotemporal parameters in healthy adults.
View Article and Find Full Text PDFDisabil Rehabil
January 2025
Department of exercise rehabilitation, Faculty of Sport Sciences, Bu-Ali Sina University, Hamedan, Iran.
Purpose Of The Article: Walking disorders are a significant issue for patients with low back pain. The aim of clinical trials is to compare the effects of cognitive functional therapy (CFT) and neurofeedback training (NFBT) on gait kinetics in chronic non-specific low back pain (CNSLBP) patients.
Materials And Methods: Sixty females with chronic non-specific low back pain were recruitment for clinical trials.
Quant Imaging Med Surg
January 2025
Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, China.
Background: There are currently no deep learning models applying resting-state functional magnetic resonance imaging (rs-fMRI) data to distinguish patients with Parkinson's disease (PD) and healthy controls (HCs). Moreover, no study has correlated objective gait parameters with brain network alterations in patients with PD. We propose BrainNetCNN + CL, applying a convolutional neural network (CNN) and joint contrastive learning (CL) method to brain network analysis to classify patients with PD and HCs, and compare their performance with classical classification methods.
View Article and Find Full Text PDFNeurol Sci
January 2025
Research Unit of Neurology, Neurophysiology, Neurobiology and Psychiatry, Department of Medicine and Surgery, Università Campus Bio-Medico Di Roma, Rome, Italy.
Background: Fear of Falling (FOF) significantly affects Parkinson's Disease (PD) patients by limiting daily activities and reducing quality of life (QoL). Though common in PD, the relation between FOF, mobility, and QoL remains unclear. This study examines the connections between FOF, gait, daily motor activity, and QoL in PD patients.
View Article and Find Full Text PDFSci Rep
January 2025
Neurorehabilitation Research Center, Kio University, 4-2-2 Umaminaka, Kitakatsuragi-gun, Koryo, Nara, 635-0832, Japan.
In post-stroke persons, temporal gait asymmetry (TGA) during comfortable gait involves a combination of pure impairments and compensatory strategies. In this study, we aimed to differentiate between pure impairments and compensatory strategies underlying TGA in post-stroke individuals and identify associated clinical factors. We examined 39 post-stroke individuals who participated in comfortable walking speed (CWS) and rhythmic auditory cueing (RAC).
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