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There is a growing demand for functional rehabilitation orthotics that can effectively assist in patient recovery from motor impairments after stroke. The hand in particular is a complex system that has proven difficult to mimic with current exoskeleton technologies. This paper presents data-driven design parameters to increase the functionality and improve the assistance profile of the ArmAssist-2...
While there is a plethora of research and inquiry into STEM and diverse populations at the university level, we have found a dearth of solid, introspective, thoughtful advice on how to handle actual classroom/team and research lab interactions such that diversity is at the core of the working experience. We have found that as instructors, leaders of engineering labs, and research managers at both...
Understanding the effects of an assistive device on dynamic balance is crucial, particularly for robotic leg prostheses. Analyses of dynamic balance commonly evaluate the range of whole-body angular momentum (H). However, the contributions of individual body segments to overall H throughout gait may yield futher insights, specifically for people with transtibial amputation using powered prostheses...
Crouch or “flexed knee” gait is a pathological gait pattern affecting many individuals with cerebral palsy. One proposed method to alleviate crouch is to provide robotic assistance to knee extension during walking. The purpose of this study was to evaluate how the magnitude of knee extensor torque affects knee kinematics, kinetics, and muscle activity. Motion capture, ground reaction force and electromyography...
In this paper we study the problem of estimating the position of a joint that is connecting two rigid links in a biomechanical model. By equipping the two links with inertial sensors, which measure linear acceleration and angular velocity, it is possible to estimate the joint position. Estimation methods for this problem have been proposed before, but experimental evaluation and comparison between...
The biomechanical gait is a complex and robust task that demands little conscious effort of an individual to perform. This article proposes a methodology for artificially generating a bipedal humanoid gait pattern for the knee and hip leg joints in the sagittal plane. The lower limbs movement is divided into three complementary patterns of movement, each with a specific function, which can be modulated...
An effective surveillance strategy for the progression of abdominal aortic aneurysms (AAAs) may be achieved by assessing its expected growth rate in a personalized manner. Given the variety of factors with an impact on AAA growth, an integrative approach to the problem could potentially benefit from incorporating clinical and morphometric data, as well as mechanical stress characterizations. In addition,...
We developed an cardiopulmonary resuscitation (CPR) feedback learning device using maltisensor technology such as the Kinect and Wii Balance Board, in order to improve and promote lay rescuers' knowledge and skills in CPR. The proposed system can evaluate user CPR actions in real time and a low-cost way. Particular characteristics of this system are for laypeople to achieve the necessary posture during...
The main topic treated in this paper is represented by the design of a total knee prosthesis in order to obtain a customized product for specific pathological cases (overweight, particular anatomical conformation for knee etc.). In such cases, given the complexity of geometric shape that has any tri-compartmental knee prosthesis and the particularity of individual dimensions of components, the final...
As fingers represent the main executive instrument that assisted human evolution by performing various activities, starting with work and fight for survival, the flawless functioning of their grip and motion capacity should be a major preoccupation for researchers in biomechanics and ergonomics areas. More and more robotics becomes involved in rehabilitation issues requiring accurate information regarding...
Studying human motor control requires innovative engineering solutions including robots. For example, the motor control task(s) must be reliable before using system identification (SYSID) tools to estimate any motor control descriptors, e.g. neurophysiological parameters. Robots can improve the experiment reliability in contrast to passive devices, e.g. seated balance on a hemisphere. First, we present...
Squat is a popular movement and its relevance on strengthening potential relies on its technical execution. While there are several appropriate techniques and several common mistakes, guidelines can help in teaching and developing a proper form. Squatphy is a system based on low-cost technologies to assess and improve squatting technique with real-time feedback. Four execution criteria based on guidelines...
Female athletes are at an increased risk of anterior cruciate ligament (ACL) injury in competitive sport during running, jumping and cutting tasks. This risk is due to deficits in posterior chain and hip recruitment associated with aberrant frontal knee loads. The identification of these risk factors has led to targeted neuromuscular training (NMT) interventions to enhance hip neuromuscular control...
Investigating the individual biomechanical relationship between jaw movements and masticatory muscle activities is an important research problem in dental research. In this work, we propose an approach to estimate the masticatory muscle tensions by the quantified muscle 3D morphologic changes during the maximum jaw opening. One healthy adult subject underwent magnetic resonance (MR) scans of the head...
The treatment of dislocated intra-articular fractures of calcaneus gives a lot of debates between the orthopaedic surgeons. Minimally-invasive techniques beside offering good reduction of the fracture have lesser complications and for this reason tend to replace the open procedures. In this paper, we want to describe a new method of minimally-invasive technique used in the treatment of intra-articular...
Main purpose of this paper is to describe a propose and compile a dynamometric measurement system which would measure the isometric force of a handgrip. Although, in the practice, there have already been the mechanic hand dynamometers which could evaluate only a limited amount of information, precisely the maximum strength of a handgrip, our aim is to compile the full electronic hand dynamometer....
Whole-Body Vibration Therapy (WBVT) is known as “biomechanical stimulation” or “biomechanical oscilation”. Application of WBVT in recreational or therapeutic framework is used in order to increase muscle strength and athletic performance. Despite the rich history of this therapy, the mechanisms underlying its efficiency and advantages remain unclear. To develop a new WBVT device intended to improve...
The reliability of the treadmill belt speed using a feedback-controlled treadmill algorithm was analyzed in this study. Using biomechanical factors of the participant's walking behavior, an estimated walking speed was calculated and used to adjust the speed of the treadmill. Our proposed algorithm expands on the current hypotheses of feedback-controlled treadmill algorithms and is presented below...
Respiratory assessment and the biomechanical analysis of the chest during breathing can be carried out by using motion capture systems. A protocol for positioning photo-reflective markers in specific chest landmarks and a computational method are mandatory in order to compute the breathing volume as a function of time from the markers' trajectories collected. Moreover, from breathing volumes, the...
The paper deals with analysis of shooter — weapon system oscillation when firing from a biomechanical point of view. The biomechanical model of shooter arms is developed by taking the muscles and tendons forces into consideration. Linking between shooter and the weapon is treated as elastic and viscose damping. The dynamic model developed for a gas operated submachine gun by applying Lagrange equation...
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