Ricardo Matias

ORCID: 0000-0003-1785-2640
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About
Contact & Profiles
Research Areas
  • Shoulder Injury and Treatment
  • Nerve Injury and Rehabilitation
  • Shoulder and Clavicle Injuries
  • Parkinson's Disease Mechanisms and Treatments
  • Muscle activation and electromyography studies
  • Balance, Gait, and Falls Prevention
  • Cerebral Palsy and Movement Disorders
  • Fibromyalgia and Chronic Fatigue Syndrome Research
  • Sports injuries and prevention
  • Spondyloarthritis Studies and Treatments
  • Context-Aware Activity Recognition Systems
  • Time Series Analysis and Forecasting
  • Orthopedic Surgery and Rehabilitation
  • Rheumatoid Arthritis Research and Therapies
  • Cardiovascular and exercise physiology
  • Neurological disorders and treatments
  • Sports Performance and Training
  • Transcranial Magnetic Stimulation Studies
  • Combustion and flame dynamics
  • IoT and Edge/Fog Computing
  • Abdominal Surgery and Complications
  • Telemedicine and Telehealth Implementation
  • Music and Audio Processing
  • Motor Control and Adaptation
  • COVID-19 and healthcare impacts

Instituto de Medicina Molecular João Lobo Antunes
2024

Weatherford College
2024

Centre Hospitalier Universitaire de Toulouse
2024

University of Lisbon
2009-2024

Champalimaud Foundation
2017-2024

Instituto Politecnico de Setubal
2005-2021

Centre for Research in Anthropology
2016

The complexity of shoulder mechanics combined with the movement skin relative to scapula makes it difficult measure kinematics sufficient accuracy distinguish between symptomatic and asymptomatic individuals. Multibody skeletal models can improve motion capture by reducing space possible joint movements, are used widely measurement lower limb kinematics. In this study, we developed a rigid-body model scapulothoracic describe thorax. This describes scapular four degrees freedom: 1) elevation...

10.1371/journal.pone.0141028 article EN cc-by PLoS ONE 2016-01-06

When a comparison between time series is required, measurement functions provide meaningful scores to characterize similarity sequences. Quite often, appear warped in time, i.e, although they may exhibit amplitude and shape similarity, dephased time. The most common algorithm overcome this challenge the Dynamic Time Warping, which aligns each sequence prior establishing distance measurements. However, Warping takes only into account similarity. A characterizes degree of warping two sequences...

10.1016/j.patcog.2018.04.003 article EN cc-by-nc-nd Pattern Recognition 2018-04-03

Musculoskeletal models enable movement scientists to examine muscle function by computing the mechanical work done muscles during motor tasks. To estimate accurately requires a model that is physiologically plausible. Previous of human shoulder have coupled scapula humeral movement. While produces stereotypical scapulohumeral rhythm, it cannot shrugging or independent and humerus. The artificial coupling elevation scapular rotation permits cross glenohumeral joint, such as rotator-cuff...

10.3389/fnbot.2019.00090 article EN cc-by Frontiers in Neurorobotics 2019-11-05

O crescimento populacional implica diretamente no aumento da demanda de água para satisfazer inúmeras atividades, o que impacta negativamente na disponibilidade hídrica fins potáveis e irrigação. Esse entrave intensifica os debates acerca alternativas sustentáveis reaproveitar a advinda das atividades humanas, com destaque reutilização cinza como forma minimizar impacto sobre solos corpos hídricos. Nesse contexto, presente pesquisa teve objetivo avaliar as condições operação manejo...

10.55905/revconv.18n.4-044 article PT Contribuciones a las Ciencias Sociales 2025-04-02

Miniaturised and wearable sensor-based measurements enable the assessment of PD motor-related features like never before hold great promise as non-invasive biomarkers for early accurate diagnosis, monitoring progression PD. High fidelity human movement reconstruction simulation can already be conducted in a clinical setting with increasingly precise affordable motion technology enabling access to high quality labelled data on patients' subcomponents (kinematics kinetics). At same time,...

10.3389/fneur.2017.00677 article EN cc-by Frontiers in Neurology 2017-12-12

Despite the existence of several studies about scapula’s position and motion, in shoulder pain conditions, there are still conflicting findings regarding scapular adaptations reduced research role during functional tasks. The present study aimed to compare scapular-related kinematic electromyographic outcomes different movements (with without load) drinking task, between symptomatic asymptomatic subjects. Forty subjects (divided into two groups) participated this cross-sectional...

10.3390/app14083291 article EN cc-by Applied Sciences 2024-04-13

Human Activity Recognition (HAR) is increasingly common in people’s daily lives, being applied health areas, sports and safety. Because of their high computational power, small size low cost, smartphones wearable sensors are suitable to monitor user’s living activities. However, almost all existing systems require devices be worn certain positions, making them impractical for long-term activity monitoring, where a change position can lead less accurate results. This work describes novel...

10.5220/0005699601900197 article EN cc-by-nc-nd Proceedings of the 15th International Joint Conference on Biomedical Engineering Systems and Technologies 2016-01-01

Gait impairments are among the most common and impactful symptoms of Parkinson's disease (PD). Recent technological advances aim to quantify these using low-cost wearable systems for use in either supervised clinical consultations or long-term unsupervised monitoring gait ecological environments. However, very few have been validated comparatively a criterion established validity.We developed two movement analysis solutions (3D full-body kinematics based on inertial sensors, smartphone...

10.1186/s12883-021-02354-x article EN cc-by BMC Neurology 2021-08-28

Mobile health (mHealth) has emerged as a potential solution to providing valuable ecological information about the severity and burden of Parkinson’s disease (PD) symptoms in real-life conditions. Objective: The objective our study was explore feasibility usability an mHealth system for continuous measures patients’ functional mobility, unsupervised settings. Methods: Patients with clinical diagnosis PD, who were able walk unassisted, had Android smartphone included. asked answer daily...

10.3390/s21154972 article EN cc-by Sensors 2021-07-21

Our aim was to verify the concurrent validity of a maximal taekwondo specific test (TST) predict VO2max through an explanatory model. Seventeen elite male athletes (age: 17.59 ± 4.34 years; body height: 1.72 6.5 m; mass: 61.3 8.7 kg) performed two graded exercise tests on different days: 20 m multistage shuttle run (SRT) and incremental TST. We recorded time, VO2max, ventilation, heart rate time exhaustion. Significant differences were found between observed estimated values [F (2, 16) =...

10.1515/hukin-2016-0016 article EN Journal of Human Kinetics 2016-10-14

<p>We intended to determine the concurrent validity of a taekwondo specific anaerobic test (TSAT) assess fitness in athletes. Seventeen elite male subjects (17.59 ± 4.34 years age; 1.72 m .07 height; 61.3 kg 8.7 weight and 15.6% 8.5% body fat) performed TSAT, which consisted kicking punching bag for 30 seconds. The standard was Wingate Anaerobic Test. Two trials were made both tests agreement between tested. variables analysed compared were: peak power; relative mean fatigue index...

10.6063/motricidade.8954 article EN cc-by-nc Motricidade 2016-10-12

This document explores the role of CFD in nuclear safety studies, with a particular focus on advancements Spain and Portugal. The field has increasingly included models to address complex safety–critical phenomena, given their ability capture three-dimensional behavior high resolution. While traditional one-dimensional codes remain very valuable, they often rely conservative approximations, making 3D approaches indispensable for accurate predictions across various scenarios. In context...

10.1016/j.nucengdes.2024.113083 article EN cc-by-nc Nuclear Engineering and Design 2024-03-14

Current clinical practice lacks consistent evidence in the management of scapular dyskinesis. This study aims to determine short- and long-term effects a scapular-focused exercise protocol facilitated by real-time electromyographic biofeedback (EMGBF) on pain function, individuals with rotator cuff related syndrome (RCS) anterior shoulder instability (ASI). One-hundred eighty-three patients were divided into two groups (n = 117 RCS n 66 ASI) guided through structured protocol, focusing...

10.3390/s21082888 article EN cc-by Sensors 2021-04-20

In a world with large technological advances and where technology takes more essential place, the interaction between health is increasingly present, particularly when one speaks of web technologies. The computerized clinical decision support systems (CDDS) are good example combination [1]. This work was part larger project that aimed to develop tractable cloud-based open-source framework for human movement analysis classification, using inverse kinematics from marker trajectories collected...

10.1109/enbeng.2015.7088815 article EN 2015-02-01

The COVID-19 pandemic has important consequences for the mental health of populations. Patients with cancer, already at risk poor outcomes, are not expected to be spared from these consequences, prompting need services improve responsiveness. This article presents research protocol an implementation study designed describe uptake a well-studied and recognized system treatment depression anxiety (Stepped-care) during specific context Pandemic in oncological site. set-up will assisted by...

10.3390/ijerph18094629 article EN International Journal of Environmental Research and Public Health 2021-04-27

Artigo resultante do trabalho apresentado na International Conference on Physiological Computing Systems - PhyCS, 7-9 jan 2014, Lisboa, Portugal

10.5220/0004928701730178 article PT cc-by-nc-nd 2014-01-01

Ecological evaluation of gait using mobile technologies provides crucial information regarding the evolution symptoms in Parkinson’s disease (PD). However, reliability and validity such may be influenced by smartphone’s location on body. This study analyzed how smartphone affects assessment PD patients’ a free-living environment. Twenty patients (mean ± SD age, 64.3 10.6 years; 9 women (45%) performed 3 trials 250 m outdoor walk smartphones 5 different body locations (pants pocket, belt,...

10.3390/jpm12050826 article EN Journal of Personalized Medicine 2022-05-19

In this work, the accuracy of a transformation method to estimate muscle attachments based on three bony landmarks was assessed. A concept mathematical error introduced and applied data-set 17 muscles' attachment lines from shoulders seven cadavers. Within studied data-set, anatomical variability average percentage values were 37.3 62.7%, respectively, for scapula, 54.4 45.6%, humerus. To reduce in presented, plane formed by segment corresponding scaled muscles should neither be too close...

10.1080/10255842.2010.499870 article EN Computer Methods in Biomechanics & Biomedical Engineering 2011-01-26
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