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We propose a data-driven technique to discuss the task-relevant and task-irrelevant movement variabilities while estimating the relevance of the motion sequence to task performance. Our method can unify the advantages and overcome the disadvantages of previous methods. Further, we reveal a novel fea...
Suture anchors are designed for use with arthroscopic techniques. In this study, finite element analysis was used to compare the stress distribution in 24 different designs of suture anchors. The results of von-Mises stress show that the optimal design reduces 14.7% von-Mises stress of a former desi...
Finite element models are used to assess the risk of developing pressure ulcers in the thighs and buttocks of wheelchair users. These models depend on experimentally obtained in vivo tissue properties from humans. However, data sets identifying the complete force-deflection curves for tissues from w...
People with transtibial amputation, due to diabetes, vascular diseases, congenital, cancer, or trauma, are custom fitted with a prosthetic limb to regain mobility and independence. However, the cost of the prosthesis varies, depending on the design, materials used, and function of the user. The pros...
Walking is the most basic exercise of physical activity. Each person has different walking types, but additional time and equipment are required to distinguish them. In order to solve this problem, we intend to develop an index that can easily distinguish various gait types by using center of pressu...
Many industries are interested in using wearable displays (e.g., “smart” glasses) to enhance worker performance. Since diverse occupational tasks involve walking, however, it is important to evaluate walking safety while using this new technology. In an earlier study, participants complained abo...
Different intensities of a stimulus (shoe weights) were applied to sport shoes. Participants ran with the shoes on the treadmill and simultaneously, the vertical ground reaction force and the rate of the perceived exertion were measured. The sense of effort and the sense of force were shown to have ...
Taekwondo is a sport depending on foot techniques, the performances are not only influenced by the strength of lower limb, but also the ability in neuromuscular control of bilateral lower extremities. A good single-leg balance emphasizes the importance of the dynamic balance ability to a Taekwondo a...
Cosimulation of glenohumeral dynamics employing contact at the glenohumeral interface predicted glenohumeral head displacements during shoulder elevation similar to those reported in cadaveric studies.
The purpose of this study was to determine the decline of gait ability by aging effects for Korean healthy adults in age group of 20s to 80s of 1,507 healthy adults. We conducted the uninterrupted walking of 1 min. duration on treadmill at their self-preferred walking speed using the shoe-type inert...
The prime method of analyzing gait cycles with balance aiding devices has typically been restricted to laboratory controlled environments, where motion capture software or visual observation are available. Few methods for real-world gait analysis exist that do not require active human monitoring. We...
The purpose of this study was to determine the best combination of ground reaction force (GRF) parameters for maximizing power during the power snatch (PS). Ten skilled weightlifters completed a total of five PS trials with 60% of one repetition maximum. Vertical GRF (VGRF), horizontal GRF (HGRF), r...
This Abstract summarizes a novel automated system to introduce stumble-inducing gait perturbations that are: (1) realistic, (2) are unanticipated by subjects, and (3) accurately controllable in their timing. Furthermore, this system (4) allows for kinematic and kinetic evaluation before and after th...
Surgical robots capable of operating under magnetic resonance image(MRI) scanner may improve efficiency and safety of neurosurgery. In previous work, a five-axis MRI compatible robot was developed and validated MRI compatibility and safety of the prototype. The goals of this study are twofold: posit...
Backboard lifting is a physically demanding component of paramedic work. The movement strategy used in backboard lifting can modulate the biomechanical exposures on the body. This study used a pattern recognition approach to identify differences in movement strategy between high and low exposure lif...
Maintaining stability in the presence of unexpected external perturbations is essential during walking. Systemic resilience, the capacity to timely recover from perturbations, is therefore achieved by suitable foot placement facilitating correction to the base of support relative to the body center ...
Due to the increase of deskbound workstyles, there has also been an increase in sedentary behaviour. Walking workstations have been shown to decrease the amount of sedentary time and increase caloric expenditure to combat consequences of sedentary workstyles. Due to the dual-task involved in walking...
Inertial measurement units (IMU) are used to estimate trunk kinematics. This study demonstrates that a commercially available Kalman filter is a valid method for estimating trunk flexion kinematics during the rapid and abrupt accelerations and decelerations that occur during fall prevention training...
Reinforcement learning (RL) can be used to optimise motion with respect to important biomechanical variables by searching over the space of kinematics and muscle excitations in predictive simulation. We used kinematic data obtained from patients with medial compartment osteoarthritis (OA) of the kne...
Surface electromyography (sEMG) and inertial measurement units (IMU) are not established in the home environment as remote measurement systems due to difficulties associated with an intuitive and user-friendly applicability. Hence, a new sEMG-IMU sensor system was developed which consists of two arm...
Since treadmill walking is a redundant task, there is an underlying control goal such as matching treadmill speed or maintaining constant position. For unperturbed walking and running, the goal is matching average treadmill speed. It is unknown how robust this goal is. This abstract shows that the g...
The development of a product for medical use must meet a series of requirements to be used, when you want to use the product, it is necessary to perform some measurements and tests to ensure that the equipment meets the requirements satisfactorily. Being a new development, it is very important that ...
This work proposes a method for creating a finite element model (FEM) of knee joints considering the ligament geometry and material properties. Experiments were conducted to obtain the material properties of the anterior cruciate ligament (ACL) and the posterior cruciate ligament (PCL) through a ten...
The purpose of this research was to examine affordances and postural mechanics for manual materials handling in tasks that were embedded with visual directional cues. We found that cues could modify occupational behaviour and handling biomechanics in work tasks. Directional cues might provide a usef...
The incidence of cracked tooth syndrome (CTS) became common dental problems. The CTS refers to a partial fracture of a tooth, involving enamel, dentin. The bite force on the cracked tooth may increase the magnitude of the mechanical stress exerted onto the pulp, which may lead to pulp inflammation a...
Ankle range of motion (RoM) may impact knee and hip range of motion in high knee flexion postures (>120°). The purpose of this study was to quantify how differences in ankle sagittal plane RoM affects knee and hip flexion and abduction kinematics. Twenty-eight low and twenty-six high ankle RoM part...
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