Smartphone Accelerometer for Gait Assessment: Validity and Reliability in Healthy Adults DOI Creative Commons
Ji‐Eun Baek, Jin‐Hwa Jung, Hang-Keun Kim

et al.

Applied Sciences, Journal Year: 2024, Volume and Issue: 14(23), P. 11321 - 11321

Published: Dec. 4, 2024

Smartphone-based accelerometers offer a cost-effective and portable alternative to traditional gait analysis systems, with high reliability in measuring key parameters such as walking speed, cadence, distance. This study assessed their validity compared the GAITRite system, widely recognized gold-standard tool, using data from 30 healthy adults at 3 self-selected speeds: preferred, slow, fast. The results demonstrated degree of agreement between two intraclass correlation coefficients (ICCs) ranging 0.778 0.999. Although findings emphasize potential smartphone for clinical real-world applications, certain limitations were noted, including participant homogeneity minor discrepancies extreme speeds. To address these limitations, incorporating additional sensors, gyroscopes magnetometers, may enhance accuracy spatial parameter estimation. Overall, support use promising tool advancing monitoring technologies, particularly contexts telerehabilitation mobility assessments.

Language: Английский

Piezoresistive sensing mechanism of graphene-based electronic skin DOI Open Access
Li Li, Jia Huang, Wenbin Yang

et al.

Journal of Theoretical and Applied Mechanics/Mechanika Teoretyczna i Stosowana, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 4, 2025

1. Chen H., Zhuo F.L., Zhou J., Liu Y., Zhang J.B., et al., 2023a, Advances in graphene-based flexible and wearable strain sensors, Chemical Engineering Journal, 464, 142576. CrossRef Google Scholar

Language: Английский

Citations

0
Development of Thermoplastic Bi-Component Electrodes for Triboelectric Impact Detection in Smart Textile Applications DOI Open Access
David Seixas Esteves, Amanda Ramos Aragão Melo, Bruno Peliteiro

et al.

Polymers, Journal Year: 2025, Volume and Issue: 17(2), P. 210 - 210

Published: Jan. 16, 2025

Smart textiles provide a significant technological advancement, but their development must balance traditional textile properties with electronic features. To address this challenge, study introduces flexible, electrically conductive composite material that can be fabricated using continuous bi-component extrusion process, making it ideal for sensor electrodes. The primary aim was to create the filament’s core, combining multi-walled carbon nanotubes (MWCNTs), polypropylene (PP), and thermoplastic elastomer (TPE), optimised conductivity flexibility. This blend, suitable processes, exemplifies role of advanced materials in electrical conductivity, mechanical flexibility, processability, which are essential wearable technology. optimisation balanced MWCNT (2.5, 5, 7.5, 10 wt.%) TPE (0, 25, 50 PP matrix. There decrease resistivity between 2.5 5 wt.% MWCNT, ranging from (7.64 ± 4.03)104 (1.15 0.10)10−1 Ω·m. Combining 25 improved while decreased tensile strength hindered masterbatch pelletising process. final stage involved laminating filament electrodes, MWCNT/PP/(25 TPE) core sheath, into triboelectric impact detection sensor. sensor, responding contact separation, produced an output voltage approximately V peak-to-peak per 15 five filaments under 100 N force over 78.54 cm2. preliminary demonstrates innovative approach enhance flexibility smart applications, enabling electrodes potential applications detection, fall monitoring, motion tracking.

Language: Английский

Citations

0
Research on Flexible Sensors for Wearable Devices: A Review DOI Creative Commons
Jihong Liu, Hongming Liu

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(7), P. 520 - 520

Published: March 30, 2025

With the development of new materials and trend miniaturization smart devices, wearable devices are playing an increasingly important role in people’s lives occupying a larger market share. Meanwhile, operation is based on flexible sensors inside them. Although has been very rapid more than 20 years since entering 21st century, facing booming demand at present, still faces many challenges such as miniaturization, higher integration, greater sustainability, high precision, efficient energy saving. This paper aims to summarize sensors, look forward future provide reference for researchers.

Language: Английский

Citations

0
Analysis of Laser Peeling Fabrication Processes and Mechanisms of Flexible Coils for Magnetostrictive Nanogenerators DOI

Wencheng Li,

Huifang Liu, Yufei Lu

et al.

Sensors and Actuators A Physical, Journal Year: 2024, Volume and Issue: unknown, P. 116182 - 116182

Published: Dec. 1, 2024

Language: Английский

Citations

1
Design and Optimization of a Custom-Made Six-Bar Exoskeleton for Pulp Pinch Grasp Rehabilitation in Stroke Patients DOI Creative Commons
Javier Andrés,

José L. Iserte-Vilar,

Víctor Roda-Casanova

et al.

Biomimetics, Journal Year: 2024, Volume and Issue: 9(10), P. 616 - 616

Published: Oct. 11, 2024

Stroke often causes neuromotor disabilities, impacting index finger function in daily activities. Due to the role of repetitive, even passive, movements neuromuscular re-education and spasticity control, this study aims design a rehabilitation exoskeleton based on pulp pinch movement. The uses an underactuated RML topology with single degree mobility, customized from 3D scans patient's hand. It consists eight links, incorporating two consecutive four-bar mechanisms third inversion crank-slider. A two-stage genetic optimization was applied, first location intermediate joint between later remaining dimensions. targeted process monitored quality metrics: average mechanical advantage extension flexion, its variability. By analyzing relationship these metrics key parameters at different synthesis stages, population evaluated is reduced by up 96.2%, compared previous studies for same problem. This custom-fit small linear actuator deliver stable 12.45 N force fingertip near-constant during flexion. enables repetitive flaccid finger, improving consistency facilitating home-based therapy.

Language: Английский

Citations

0
An Exoskeleton Design and Numerical Characterization for Children with Duchenne Muscular Dystrophy DOI Creative Commons
Cristian Copiluși, Sorin Dumitru, Nicolae Dumitru

et al.

Bioengineering, Journal Year: 2024, Volume and Issue: 11(11), P. 1072 - 1072

Published: Oct. 26, 2024

This research addresses a feasibility study for validating an exoskeleton with kinematic considerations. The designed will be used children congenital disorders, especially case characterized by Duchenne muscular dystrophy (DMD). core focuses on virtual simulations carried out through the multibody systems theory under MSC Adams 2012 software environment, constructive solution. mechanism is simplicity, low-cost, and easy-operation features criteria. results obtained numerical processing analysis validate of proposed prototype.

Language: Английский

Citations

0
Smartphone Accelerometer for Gait Assessment: Validity and Reliability in Healthy Adults DOI Creative Commons
Ji‐Eun Baek, Jin‐Hwa Jung, Hang-Keun Kim

et al.

Applied Sciences, Journal Year: 2024, Volume and Issue: 14(23), P. 11321 - 11321

Published: Dec. 4, 2024

Smartphone-based accelerometers offer a cost-effective and portable alternative to traditional gait analysis systems, with high reliability in measuring key parameters such as walking speed, cadence, distance. This study assessed their validity compared the GAITRite system, widely recognized gold-standard tool, using data from 30 healthy adults at 3 self-selected speeds: preferred, slow, fast. The results demonstrated degree of agreement between two intraclass correlation coefficients (ICCs) ranging 0.778 0.999. Although findings emphasize potential smartphone for clinical real-world applications, certain limitations were noted, including participant homogeneity minor discrepancies extreme speeds. To address these limitations, incorporating additional sensors, gyroscopes magnetometers, may enhance accuracy spatial parameter estimation. Overall, support use promising tool advancing monitoring technologies, particularly contexts telerehabilitation mobility assessments.

Language: Английский

Citations

0