Publications by Kamiar Aminian

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

Prolonged running, defined in the present paper as distances >3000 m, results in neurophysiological and gait alterations. Although these changes appear to develop concurrently, it remains unclear whether neurophysiological responses modulate spatiotemporal gait parameters. This systematic review with secondary analyses aimed to quantify the relationship between conventional performance fatigability assessments (i.e., maximal voluntary contraction (∆MVC), maximal voluntary activation (∆VA), and potentiated t

Despite its medical relevance, accurate recognition of sedentary (sitting and lying) and dynamic activities (e.g. standing and walking) remains challenging using a single wearable device. Currently, trunk-worn wearable systems can differentiate sitting fro ...

In this work, we present a magnetic measurement system for integration into smart knee prostheses to accurately measure the combination of two knee rotations; namely Flexion- Extension and Internal-External rotations. This measurement system consists of tw ...

In this work we tackled the problem of accurate measurement of internal–external (IE) rotations in the prosthetic knee. We presented a magnetic measurement system to be implanted in the knee prostheses in order to measure IE without soft tissue artifacts. ...

© 2015 Elsevier Ltd. Segment poses and joint kinematics estimated from skin markers are highly affected by soft tissue artifact (STA) and its rigid motion component (STA. RM ). While four marker-clusters could decrease the STA non-rigid motion d ...

The invention relates to a system and a method for assessment of walking and running gait in human. The method is preferably based on the fusion of a portable device featuring inertial sensors and several new dedicated signal processing algorithms: the det ...

In this study, we compared the cervical range of movement (ROM) and range of angular velocity (RAV) measured simultaneously using a 3-dimensional electrogoniometer, the CA6000-OSI (OSI), an optoelectronic motion capture system (MCS), the VICON® and a wearable system (WS) composed of inertial measurement units, the Physilog®. Measurement of primary and associated cervical movement during active lateral bending (LB), axial rotation (AR) and flexion-extension (FE) were compared from those systems in 10 healthy

A new method of scoring systems for the functional assessment of the shoulder is presented. 3D accelerometers and gyroscopes attached on the humerus were used to differentiate a healthy from a painful shoulder. The method was first tested on 10 healthy vol ...

A new method of evaluating the characteristics of postural transition (PT) and their correlation with falling risk in elderly people is described. The time of sit-to-stand and stand-to-sit transitions and their duration were measured using a miniature gyroscope attached to the chest and a portable recorder placed on the waist. Based on a simple model and the discrete wavelet transform, three parameters related to the PT were measured, namely, the average and standard deviation of transition duration and the

Roentgen stereophotogrammetry analysis technique allows an accurate measurement of knee joint prosthesis position and orientation using two X-ray images. Although this technique is used generally during static procedure, it is possible to use it with a bip ...

Changes in turning are one of the early motor deficiencies in Parkinson's Disease (PD). We have proposed a system based on wearable, inertial sensors and a novel automatic analysis algorithm that can assess 180 degrees turns. Twelve patients in early stage ...

A new system, Physilog, for ambulatory monitoring of movement is proposed and its applications in orthopaedic, physiology, angiology and quality of life are presented. Body accelerations were recorded by a portable measuring device. Significant parameters of body motion, namely, movement coordination, temporal parameters, speed, incline, distance covered, kind of physical activity and its duration, are extracted from the subject accelerations in its daily environment. The accuracy of these parameters guaran

Aim: To assess the gait and cognitive performances of children with cerebral palsy (CP) during dual tasks (DT) in comparison to typically developing (TD) children. Method: This prospective, observational, case-control study included 18 children with CP (7 ...

A new real-time ergometric system, ERGORAT, for measuring the energy expenditure due to muscular activity of small mammals is described. The method is based on measuring the vibrations induced by a freely moving rat to a platform on which it is living. Six accelerometers placed on the platform detect all the vibrations produced by the rat. The co-ordinates of the centre of mass of the animal are located by an optoelectronic device. This location and the six accelerations are fed to a microprocessor-based da

Recent advances in wearable technologies integrating multi-modal sensors have enabled the in-field monitoring of several physiological metrics. In sport applications, wearable devices have been widely used to improve performance while minimizing the risk o ...

Three-dimensional analysis of the entire sequence in ski jumping is recommended when studying the kinematics or evaluating performance. Camera-based systems which allow three-dimensional kinematics measurement are complex to set-up and require extensive po ...

Introduction: Today, inertial measurement units (IMU) provide promising solutions for swimmers’ motions analysis [1-3]. However, most studies focused on few parameters, often during strokes of front crawl style [4]. For swimming training session monitoring, there is a need for automatic detection of swimming and lap periods, styles and more details within each lap. This study proposes a general approach starting with macro-level analysis to detect swimming bouts, laps and styles, going to micro-level analys

A key point in human movement analysis is measuring the trajectory of a person’s center of mass (CoM). For outdoor applications, differential Global Navigation Satellite Systems (GNSS) can be used for tracking persons since they allow measuring the traject ...

The primary purpose of this study was to investigate the effects of cognitive loading on movement kinematics and trajectory formation during goal-directed walking in a virtual reality (VR) environment. The secondary objective was to measure how participant ...

Introduction: In this study the effect of subthalamic nucleus neep brain Stimulation (STN-DBS) on the gait parameters of patients with Parkinson's disease (PD) was examined using an ambulatory gait analysis system based on miniature gyroscopes. The aim was twofold: to characterize gait with and without stimulation (ON and OFF states) and to understand how STN-DBS improves motor performance in PD patients.Methods: Ten PD patients, 20±3 months after implantation of bilateral STN-DBS were asked to walk 20m. Pa

Kamiar Aminian

Chat with Graph Search

Performance fatigability and spatiotemporal gait alterations following prolonged running: A systematic review and secondary analysis

Suitability of commercial barometric pressure sensors to distinguish sitting and standing activities for wearable monitoring

Accurate Measurement of Concurrent Flexion-Extension and Internal-External Rotations in Smart Knee Prostheses

Accurate Internal-External Rotation Measurement in Total Knee Prostheses: a magnetic solution

Soft tissue artifact distribution on lower limbs during treadmill gait: Influence of skin markers' location on cluster design

System and method for 3d gait assessment

Concurrent validity of three measurement systems for the evaluation of cervical spine mobility

Outcome evaluation in shoulder surgery using 3D kinematics sensors

Measurement of stand-sit and sit-stand transitions using a miniature gyroscope and its application in fall risk evaluation in the elderly

Error performances of a model-based biplane fluoroscopic system for tracking knee prosthesis during treadmill gait task

Analyzing 180 degrees turns using an inertial system reveals early signs of progression of Parkinson's disease

Motion analysis in clinical practice using ambulatory accelerometry

The effects of dual tasks on gait in children with cerebral palsy

Real-Time Measurement of the Contribution of the Muscular- Activity to the Metabolic-Rate in Freely Moving Rats

Indirect Estimation of Breathing Rate from Heart Rate Monitoring System during Running

A system to measure the kinematics during the entire ski jump sequence using inertial sensors

A novel approach for swimming analysis in main swimming styles using a single sacrum-worn IMU sensor

Three-Dimensional Body and Centre of Mass Kinematics in Alpine Ski Racing Using Differential GNSS and Inertial Sensors

Cognitive Loading Affects Motor Awareness and Movement Kinematics but Not Locomotor Trajectories during Goal-Directed Walking in a Virtual Reality Environment

Ambulatory measurement of gait parameters in Parkinson's disease: Effects of subthalamic stimulation