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In this paper, we proposed a micromachine that driven by a single muscle cell bioactuator. Dorsal vessel cells (DVCs) were used as a bioactuator because of their robustness. We adopted flagella movement as motion of the micromachine. In order to confirm the motion of the micromachine by DVCs, we assumed a physical model and estimated the maximum displacement of the micromachine. DVCs adhesion to the...
This study investigates the dynamics of muscular fiber response to a mechanical impulse. By recording normal acceleration values from different muscle fiber regions, upon the application of a variable mechanical stimulus, we developed a characterization of the response propagation pattern, with respect to different experimental conditions. This research continues our work on the subject of complex...
The special experimental setup for a study of the head-neck system dynamics during impulse acceleration, which arises in the case of the ground and air vehicle crushes, was elaborated. Based on experimental results the authors proposed the simple mechanical model of the “head-neck” system with eight degrees of freedom, which are the rotation angles of the head and seven cervical vertebrae. For the...
Musculoskeletal disorders (MSDs) have affected an increasing number of people in the active general population. In this perspective, we developed a measuring tool taking muscle activities in certain regions of the body, standing posture taking the center of pressure under the feet and feet positions. This tool also comprises an instrumented helmet containing an electroencephalogram (EEG) to measure...
Falls and fall-related fractures are common in the elderly and lead to negative health outcomes. Muscle function and balance impairment are important risk factors for falls. Traditional exercise improves muscle mass and function as well as balance. However, older adults often do not exercise regularly because of physical and cognitive limitations or lack of adherence. Whole body vibration promises...
We describe a bio-feedback system for rehabilitation based on an accelerometric sensor, a processing unit and an output unit. The sensory unit, which incorporates a cell with three uni-axial accelerometers and three rate gyroscopes, is mounted on the subject's back (L5 level) using a velcro belt and allows to evaluate the trunk accelerations in the anterior-posterior (AP) and medial-lateral (ML) directions...
Spasticity is clinically defined as velocity-dependent resistance to passive movement, characterized by excessive, jerky contraction of muscles. However, spasticity is not yet well understood, and current clinical measures of it are subjective and unreliable. We applied standard physics principles and phase space analyses to better visualize the motor impairments associated with spasticity in Multiple...
This paper presents evaluation methods to evaluate 2 types of stroke paralysis quantitatively. Recently, aging of the population and declining birthrate is progressing in the developed countries. Along with it, the number of stroke patients is expected to increase because of its high disease rate of the elderly, and rehabilitation system by using robot technology is being focused. In order to perform...
In the field of cycling competition, cyclists commonly utilize binding pedals to maximize their competitive performance. The feature of binding pedals is to hold the sole of cycling shoe on the upper body of pedal, which enables a cyclist to not only push down the pedals but also pull up the pedals in one revolution of pedaling motion. Pedaling motion is implemented by the combination of muscle activities...
This paper describes a miniature, wearable wireless hand- gesture recognition (HGR) system called HANDIO. It obtains its input from not only traditional inertial sensors but also a muscle tension sensor (MTS). The addition of MTS enables recognition of a much broader range of intuitive hand gestures, particularly those involving the wrist, that would otherwise be difficult to distinguish by traditional...
A key factor in robotic-based physical rehabilitation is providing robotic assistance only when the subjects exert muscular effort and that movement intention does not translate into an actual physical movement. Thus, an accurate motion intention detection system plays an important role. This study focuses on the use of Electromyography signals (EMG) in detecting motion intention. Since this type...
Neuromuscular stimulation (“NMS”) is frequently caused by application of various types of energy (radiofrequency, ultrasonic, or even mechanical) during surgical procedures. Neuromuscular blocking drugs do not always provide complete paralysis, resulting in potentially dangerous muscle stimulation events. In the case of radiofrequency energy, modification of the spectral content may serve to minimize...
This paper deals with Matlab modeling of the upper limb muscles supposed to be driven by means of FES - Functional Electrical Stimulation. FES, is a relative new method used for the recovery of the neurological patient and can be widely applicable. The FES technology is used successfully in recovery of the handicapped people. Most times the central nervous system is affected. The electrical stimulus...
This paper presents a continuous control method of electric wheelchair based upon surface electromyographic signals (EMG), ultimately, for quadriplegics. The proposed method utilizes two EMG signals as inputs for the muscle-computer interfaces (MCI). Since Zygomaticus major muscles located in the right and left sides of human face are able to excise individually and to control contractile forces voluntarily,...
This paper describes the design and implementation of the model of a synthetic vestibular system. The vestibular system in humans, along with other sensory and motor systems, is responsible for three cognitive functions that support mobility. First, it helps humans to maintain the balance of the body. Second, it allows humans to stabilize the head. Finally, when the body or head is in motion it helps...
Resting muscle exhibits certain inherent properties whose interpretation is important to the understanding of the function and health of muscle. These physical properties aid in better understanding the behavior of muscle and its effects on the lumbosacral spine. A wealth of research has been performed on actively contracting muscles, however there is little existing literature on the properties of...
In developing automatic platooning of trucks as an energy-saving technology, the reliable driving of the platooned trucks is a primary objective for public implementation and future applications. At the same time, there is also an emergency requirement to ensure the safety of the driving experiment in the automatic platooning of trucks, including the conditions of a system failure. This paper presents...
This work investigates the feasibility of using the dynamic features of the eyes for biometric identification. By leveraging the fusion of eye movement features and iris constriction and dilation parameters, we show that such dynamic features of the eye can yield a good level of accuracy for biometric systems. This was achieved by recording then classifying eye movements into segments consisting of...
The study of seated balance, specifically in relation to wheelchair propulsion has the potential to lead to the prevention and treatment of musculoskeletal injuries. To date little study has been done which analyzes the activity of abdominal and back muscles in relation to postural behavior and balance during sitting balance. In this pilot study, the effect of motorized rotational roll movement was...
The aims of this study is to determine the physical performance attributes based on playing positions in rugby union. The physical performance attributes consists of body fat percentage, speed, agility and quickness, and muscular strength component. For the purpose of this study thirty-five male rugby players who are currently playing for the Malaysian Super League from the UiTM Lion Rugby Club were...
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