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In this paper a data acquisition system based on wireless sensor networks to support the biomechanical gait analysis will be presented. The system is composed by sensor nodes that can be fasten to the limbs of a person. Each node contains the ESP8266 platform connected to a MPU6050 module that includes a gyroscope and an accelerometer. The system starts working in a self-adjusting (auto calibration)...
We introduce the concept of trajectory-specific sensory manifolds. They are the unique multidimensional and time-varying combinations of afferent signals that obligatorily emerge during a limb movement. We use the example of muscle spindles (i.e., the muscle's proprioceptors for length and velocity) that arise during movements of an arm (a planar 2-DOF 6-muscle model) during the production of straight,...
Lower-limb musculoskeletal injuries are a pervasive problem in the population and military, especially during basic training where load bearing bones and joints are repeatedly subjected to aggressive movements and high forces. The ability to measure these elements is critical to acquisition decisions affecting or influencing cumulative load carriage of the individual Marine/Warfighter. These data...
Biomechanical properties have been revealed as potential biomarkers for distinguishing cancer cells from normal cells. In this work, we report a novel technique using a confining microchannel embedded with microelectrodes for biomechanical phenotyping for floating human cells, including one normal breast cell line (MCF-10A) and two breast cancer cell lines (MCF-7 and MDA-MB-231). The floating cells...
Bad posture while working or playing videogames can affect our life quality and impose negative economic consequences over time. There's raising concern in companies regarding worker's wellness, many adopting preventive measures. Specialized training in posture is important to prevent occupational activities risks and to foster health promotion. In this paper, we present a study of different classifiers...
It is known that the apparent difference between the geometric factors and loading conditions in the cervical cage is caused by the limited high pressure and thus the collapse of the adjacent vertebral body of the cage, leading to clinical problems such as vertebral body rupture, bone loss, stability and fusion failure. Numerous techniques and methods with advantages and disadvantages are applied...
It was found that the material properties of the human spleen were not strain rate dependent within the tested range. This finding can lead to simplified models with elastic material properties that can quickly determine the effect of loading on the spleen including prediction of failure.
The first virtual reality (VR) systems have hit the shelves, and 2017 may become the year where VR finally enters the homes of consumers in a big way. By allowing users to perceive and interact in a natural manner, VR offers the promise of realistic experiences of familiar, foreign, and fantastic virtual places and events. However, should we always opt for the highest degree of fidelity when striving...
In this work we have studied the simulation of blood flow in an ideal artery with stenosis because that is related to vascular disease. Stenosis is a localized narrowing of the artery typically caused by atherosclerosis. The formation of atherosclerotic plaques in coronary arteries depends, among other variables, on the hemodynamics of the arterial system. In this work, we have performed a series...
Electromyography (EMG) employs widespread usage of rehabilitation robotics. EMG informs about the maximum capabilities of muscles and allows comparisons between different tasks performed. This presents a comparitive study % MVC (Maximum Voluntary Contraction) hand muscles among 30 to 60 years of age group. The movement considered are flexion and extension of elbow and wrist, pronation and supination...
Rehabilitation engineering for tremor disorders is a thriving field of study in the present day with our ever-growing understanding of neuro-degenerative disorders. However, these technologies are often far from being commercially viable, or economically accessible to the affected populace. As such, the following paper attempts to functionalize the simple mechanism of a viscous biomechanical orthosis...
Our study investigates the effects of (non-)isometric mappings between physical movements and virtual motions in the virtual environment (VE) on walking biomechanics of older adults. Three primary domains (pace, base of support and phase) of spatio-temporal and temporo-phasic parameters were used to evaluate gait performance. Our results show similar results in pace and phasic domains when older adults...
Hearing is one of the five senses in humans and one of the most important for their social life. The human ear is a complex organ which allows to understand and interpret sound waves for a band of frequencies between 16 Hz and 20 kHz and intensities ranging from 0 to 130 dB. The numerical model used in this work was built based on the geometrical information obtained from The visible ear project....
This study presents a kinematic and dynamic analysis of human normal walking in order to establish a mathematical model for the control system of a lower-limb exoskeleton for gait rehabilitation. Based on the number of supported legs, the model analysis was divided into two: a serial approach for one supported leg and a parallel approach for two supported legs. The full model consists on a 7-link...
Analysis of a system and its control design can be greatly simplified while working with lower-order models as compared to high order models. In this paper we analyze a minimal realization biomechanical model of reflexive movement of human finger when the little finger is bent. This is a 6th order minimal state space realization model for movement simulation of two fingers. We developed an H2 robust...
This paper presents a new concept for data capturing algorithm for golf swing, particularly, in greenside bunkers on a golf course. The captured data will be used to investigate the critical parameters of the golf swing addressing selected significant variables. Modeling and key findings will be used for extracting optimum training parameters. Results show the effectiveness of the proposed BioKin...
Center of pressure (COP) movement during sitting on an unstable chair can be used to represent static trunk postural control. Theoretically, healthy individuals with intact trunk proprioception should have similar COP movement between eye-open and eye-closed conditions regardless of visual feedback. The custom software program has been developed to investigate COP movement in this group of participants...
Manufacturing and construction industries advance rapidly and hence work-related health problems are gaining importance. Musculoskeletal disorders like lower back pain is an example of work-related health concerns faced by industrialized nations. Such health concerns are of more significance in developing and under developed countries, where lack of standards result in such cases go unnoticed. Various...
After shooting action, basketball's movementtrajectory directly affects the shooting rate. In this paper, usingtheoretical basis of kinematic mechanics, analyzes the influenceof rotation of basketball on air resistance, and draws aconclusion that the influence of contra rotation on shooting ratediffers from that of forward-rotation. In the end, The papersuggestions that the strength of shooting should...
Center of pressure (COP) movement during sitting on an unstable chair can be used to represent static trunk postural control. Theoretically, healthy individuals with intact trunk proprioception should have similar COP movement between eye-open and eye-closed conditions regardless of visual feedback. The custom software program has been developed to investigate COP movement in this group of participants...
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