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Wearable Sensors for Gait and Motion Analysis

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Biomedical Sensors".

Deadline for manuscript submissions: 25 December 2024 | Viewed by 11169

Special Issue Editors


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Guest Editor
State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
Interests: rehabilitation robotics; human dynamics and biomedical information; wearable sensors
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
Interests: wearable sensors; human motion analysis; rehabilitation robots

Special Issue Information

Dear Colleagues,

Walking is one of the most common activities in people’s daily lives, and the evaluation of human gait can directly reflect changes in human health. In recent years, great breakthroughs have been achieved in the perception accuracy and delays of human motion data through highly developed wearable sensor technology and intelligent processing methods. Based on these breakthroughs, researchers have achieved a convenient and efficient evaluation of human gait and other movements, improving the application value of quantitative gait analysis in both daily life and clinical settings. This Special Issue focuses on the cutting-edge work and innovative achievements concerning wearable sensors in broadening the application value of human motion analysis in typical daily and clinical scenarios.

Both review articles and original research papers are being solicited for, though not limited to, the following areas:

  • Gait analysis based on wearable sensors;
  • Motion analysis and human–machine interaction;
  • Motion analysis and clinical application;
  • New wearable sensors for motion analysis;
  • Sensor networks based on wearable sensors;
  • Wearable sensors based exoskeleton control;
  • Innovative application scenarios of motion analysis based on wearable sensors.

Prof. Dr. Tao Liu
Dr. Bingfei Fan
Guest Editors

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Keywords

  • wearable sensors
  • sensor network
  • motion analysis
  • gait assessment
  • clinical application
  • human–machine interaction

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Published Papers (5 papers)

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Research

10 pages, 1129 KiB  
Article
Smartphone Technology to Facilitate Remote Postural Balance Assessment in Acute Concussion Management: Pilot Study
by Oren Tirosh, Jaymee Klonis, Megan Hamilton, John Olver, Nilmini Wickramasinghe, Dean Mckenzie, Doa El-Ansary and Gavin Williams
Sensors 2024, 24(21), 6870; https://doi.org/10.3390/s24216870 - 26 Oct 2024
Viewed by 485
Abstract
Impaired balance is a key symptom following acute concussion. Unfortunately, the recommended clinical balance assessment lacks sensitivity and discriminative ability, relying on the experience of the clinician for interpretation. The aim of this pilot study is to explore smartphone technology to remotely assess [...] Read more.
Impaired balance is a key symptom following acute concussion. Unfortunately, the recommended clinical balance assessment lacks sensitivity and discriminative ability, relying on the experience of the clinician for interpretation. The aim of this pilot study is to explore smartphone technology to remotely assess balance impairment in people with acute concussion. A smartphone app was developed to allow the clinician to connect remotely using their personal web browser to the participant’s smartphone and collect motion data while instructing the participant to perform the following balance tests: standing on firm and foam surface with eyes opened and closed (FIRMEO, FIRMEC, FOAMEO, and FOAMEC). Outcome measures were processed from the raw acceleration to calculate the average acceleration magnitude from the mean and the root-mean square, with greater values indicating more sway. Eleven healthy controls (HCs) and 11 people with concussion (CON) participated. In all sway measurements, the CON group had significantly (p < 0.05) greater values when standing on a firm surface. In the FOAMEC condition, the CON group had significantly (p < 0.05) greater sway measures only in the AP direction, while significantly greater sway in all directions were found in the CON group in the FOAMEO condition. This study shows that remote balance assessment using a smartphone can discriminate between healthy controls and people with acute concussion. This technology could play an important role in concussion management to assist with determining recovery from concussions and the optimal timing for return to sport. Full article
(This article belongs to the Special Issue Wearable Sensors for Gait and Motion Analysis)
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16 pages, 3219 KiB  
Article
Balance Assessment Using a Handheld Smartphone with Principal Component Analysis for Anatomical Calibration
by Evan C. Anthony, Olivia K. Kam, Stephen M. Klisch, Scott J. Hazelwood and Britta Berg-Johansen
Sensors 2024, 24(17), 5467; https://doi.org/10.3390/s24175467 - 23 Aug 2024
Viewed by 3628
Abstract
Most balance assessment studies using inertial measurement units (IMUs) in smartphones use a body strap and assume the alignment of the smartphone with the anatomical axes. To replace the need for a body strap, we have used an anatomical alignment method that employs [...] Read more.
Most balance assessment studies using inertial measurement units (IMUs) in smartphones use a body strap and assume the alignment of the smartphone with the anatomical axes. To replace the need for a body strap, we have used an anatomical alignment method that employs a calibration maneuver and Principal Component Analysis (PCA) so that the smartphone can be held by the user in a comfortable position. The objectives of this study were to determine if correlations existed between angular velocity scores derived from a handheld smartphone with PCA functional alignment vs. a smartphone placed in a strap with assumed alignment, and to analyze acceleration score differences across balance poses of increasing difficulty. The handheld and body strap smartphones exhibited moderately to strongly correlated angular velocity scores in the calibration maneuver (r = 0.487–0.983, p < 0.001). Additionally, the handheld smartphone with PCA functional calibration successfully detected significant variance between pose type scores for anteroposterior, mediolateral, and superoinferior acceleration data (p < 0.001). Full article
(This article belongs to the Special Issue Wearable Sensors for Gait and Motion Analysis)
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24 pages, 6924 KiB  
Article
A Brain-Controlled and User-Centered Intelligent Wheelchair: A Feasibility Study
by Xun Zhang, Jiaxing Li, Ruijie Zhang and Tao Liu
Sensors 2024, 24(10), 3000; https://doi.org/10.3390/s24103000 - 9 May 2024
Cited by 1 | Viewed by 2623
Abstract
Recently, due to physical aging, diseases, accidents, and other factors, the population with lower limb disabilities has been increasing, and there is consequently a growing demand for wheelchair products. Modern product design tends to be more intelligent and multi-functional than in the past, [...] Read more.
Recently, due to physical aging, diseases, accidents, and other factors, the population with lower limb disabilities has been increasing, and there is consequently a growing demand for wheelchair products. Modern product design tends to be more intelligent and multi-functional than in the past, with the popularization of intelligent concepts. This supports the design of a new, fully functional, intelligent wheelchair that can assist people with lower limb disabilities in their day-to-day life. Based on the UCD (user-centered design) concept, this study focused on the needs of people with lower limb disabilities. Accordingly, the demand for different functions of intelligent wheelchair products was studied through a questionnaire survey, interview survey, literature review, expert consultation, etc., and the function and appearance of the intelligent wheelchair were then defined. A brain–machine interface system was developed for controlling the motion of the intelligent wheelchair, catering to the needs of disabled individuals. Furthermore, ergonomics theory was used as a guide to determine the size of the intelligent wheelchair seat, and eventually, a new intelligent wheelchair with the features of climbing stairs, posture adjustment, seat elevation, easy interaction, etc., was developed. This paper provides a reference for the design upgrade of the subsequently developed intelligent wheelchair products. Full article
(This article belongs to the Special Issue Wearable Sensors for Gait and Motion Analysis)
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20 pages, 15786 KiB  
Article
Design of Virtual Hands for Natural Interaction in the Metaverse
by Joaquín Cerdá-Boluda, Marta C. Mora, Nuria Lloret, Stefano Scarani and Jorge Sastre
Sensors 2024, 24(3), 741; https://doi.org/10.3390/s24030741 - 23 Jan 2024
Viewed by 1592
Abstract
The emergence of the Metaverse is raising important questions in the field of human–machine interaction that must be addressed for a successful implementation of the new paradigm. Therefore, the exploration and integration of both technology and human interaction within this new framework are [...] Read more.
The emergence of the Metaverse is raising important questions in the field of human–machine interaction that must be addressed for a successful implementation of the new paradigm. Therefore, the exploration and integration of both technology and human interaction within this new framework are needed. This paper describes an innovative and technically viable proposal for virtual shopping in the fashion field. Virtual hands directly scanned from the real world have been integrated, after a retopology process, in a virtual environment created for the Metaverse, and have been integrated with digital nails. Human interaction with the Metaverse has been carried out through the acquisition of the real posture of the user’s hands using an infrared-based sensor and mapping it in its virtualized version, achieving natural identification. The technique has been successfully tested in an immersive shopping experience with the Meta Quest 2 headset as a pilot project, where a transactions mechanism based on the blockchain technology (non-fungible tokens, NFTs) has allowed for the development of a feasible solution for massive audiences. The consumers’ reactions were extremely positive, with a total of 250 in-person participants and 120 remote accesses to the Metaverse. Very interesting technical guidelines are raised in this project, the resolution of which may be useful for future implementations. Full article
(This article belongs to the Special Issue Wearable Sensors for Gait and Motion Analysis)
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20 pages, 24482 KiB  
Article
Knee Angle Estimation with Dynamic Calibration Using Inertial Measurement Units for Running
by Matthew B. Rhudy, Joseph M. Mahoney and Allison R. Altman-Singles
Sensors 2024, 24(2), 695; https://doi.org/10.3390/s24020695 - 22 Jan 2024
Viewed by 1898
Abstract
The knee flexion angle is an important measurement for studies of the human gait. Running is a common activity with a high risk of knee injury. Studying the running gait in realistic situations is challenging because accurate joint angle measurements typically come from [...] Read more.
The knee flexion angle is an important measurement for studies of the human gait. Running is a common activity with a high risk of knee injury. Studying the running gait in realistic situations is challenging because accurate joint angle measurements typically come from optical motion-capture systems constrained to laboratory settings. This study considers the use of shank and thigh inertial sensors within three different filtering algorithms to estimate the knee flexion angle for running without requiring sensor-to-segment mounting assumptions, body measurements, specific calibration poses, or magnetometers. The objective of this study is to determine the knee flexion angle within running applications using accelerometer and gyroscope information only. Data were collected for a single test participant (21-year-old female) at four different treadmill speeds and used to validate the estimation results for three filter variations with respect to a Vicon optical motion-capture system. The knee flexion angle filtering algorithms resulted in root-mean-square errors of approximately three degrees. The results of this study indicate estimation results that are within acceptable limits of five degrees for clinical gait analysis. Specifically, a complementary filter approach is effective for knee flexion angle estimation in running applications. Full article
(This article belongs to the Special Issue Wearable Sensors for Gait and Motion Analysis)
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