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The height of the medial longitudinal arch (MLA) is a main parameter to classify foot normality and an indicator of potential injuries of the foot and ankle. The current study aimed to quantify the development of MLA under the influence of gender and normalization in school-age children in Taiwan vi...
A total number of 20 young adults participated in a walking trial followed by an unexpected slip. The COM height, single/double stance phase duration, and angular momentum where calculated and compared between mild and severe slippers, during a full gait cycle and an additional 30% of gait cycle tim...
A software toolkit, DRRACO, was developed to use a graphics processing unit (GPU) to perform image processing for biplane fluoroscopy analysis. The GPU is used to quickly generate digitally-reconstructed radiographs (DRRs) of bones, and uses GPU-accelerated image processing functions (convolution, d...
Previous research has demonstrated age-dependence in various tendon mechanical and material properties. However, little is known regarding the effect of aging on injury mechanics in damaged fascicles. By loading both mature and aged partially-cut fascicles and observing local deformations, this stud...
Patellofemoral Pain Syndrome (PFPS) is a condition impacting the anterior knee and is exacerbated with running, squats, climbing stairs, or prolonged sitting. Altering running cadence, using a metronome (5-15% above baseline) has been shown to decrease knee joint forces and pain in individuals with ...
Male artistic gymnasts performing strength elements in their ring routines need a high level of balance and a maximal strength in their arms and shoulder muscles. The aim of this study was to investigate the effect of a 4-week eccentric-isokinetic training period on muscular activation patterns in t...
The purpose of this study was to analyze the effect of potential fallers on fall analysis. 79 elderly people aged 60 years or older were participated in this experiment. Subjects were divided into four groups (GROUP1: non-faller - non-faller n = 46, GROUP2: non-faller - faller n = 12, GROUP3: faller...
We have conducted experimental study (n=1) to investigate the effect of different shoes on foot bone kinematics. Kinematics were acquired using fluoroscopy while 3D geometry of the foot was recorded with a CT. The participant had to move from a one-legged stance into a tip-toe stance. Afterwards the...
Anatomically accurate reconstruction of joint structures, including bone and cartilage, is necessary in musculo-skeletal modelling and prosthesis designs. Correspondingly, CT and MRI shall be used, possibly in combination. A single ankle specimen was analyzed by producing 3D bone and cartilage model...
This pilot study investigated the impacts of a whole-body, powered exoskeleton on low-back muscle activation and joint ranges-of-motion (ROM) in a load carriage task performed by able-bodied individuals. The prototype exoskeleton (Guardian XOTM, Sarcos Robotics) had 16 active degrees of freedom. Aft...
The 3D shoulder kinematics of 11 male volleyball players was compared at specific humerothoracic elevation angles (15º, 45º, 60º, 75º and 90º) in a) constrained arm elevation movement (in the scapular plane or scaption) and b) functional arm elevation movement (proprioceptive neuromuscular faci...
The Low Flexion (LF) test is a clinical test to quantify glenohumeral joint (GHJ) posterior capsule tightness (PCT). However, there is a concern that the lack of scapula stabilization during the measurement may affect the test. This study analyzed scapula positioning during the application of the LF...
Usage of prophylactic ankle braces have been shown to reduce risk of injury while performing various jumping tasks, however the magnitude of the force acting on the knee has not been quantified. This study examined sagittal and frontal plane knee angle and moment at peak ground reaction force (vGRF)...
Indian infantry soldiers exposed to uphill terrain to fortify their duties with carrying different military loads which influence them to adapt the environmental stress and improve their combat readiness. The gait kinematic changes of the combined effect of load and grade may influence to recruit th...
The purpose of this study was to determine the effect load carriage has on natural ankle quasi-stiffness (NAS). Fourteen college-aged healthy individuals underwent an instrumented gait analysis while walking over ground at 0.8 statures/second (st/s) under three load carriage conditions. Data were an...
Robotic assistance in rehabilitation is becoming more and more popular. However, little is known about how the robot's support affects the muscular activation underlying the therapeutic exercise. To investigate the effect of robotic assistance on muscular activation 20 healthy subjects performed the...
The purpose of this study was to investigate what the effect is of prioritizing kicking velocity or accuracy upon kinematics and kicking performance in soccer. 13 male soccer players performed penalty-kicks with prioritising velocity or accuracy. 3D kinematics, together with maximal ball velocity an...
In this study, a simple bipedal model with an upper body walks down on a gentle moving slope to clarify the effect of trunk swinging behaviors on gait on a moving slope via numerical simulation. Gaits with three types of trunk swinging behaviors, forward swinging (FS), backward swinging (BS), and no...
Shin splints are common in high-arched runners, which may be related to rear-foot over-supination during toe-off caused by forefoot eversion. It was reported that the forefoot lateral wedge insole could decrease the supination angle of the rear-foot during toe-off. The purpose of this study was to c...
The use of posturography to distinguish fallers and non-fallers is widely debated, likely due to a lack of standardization in methodologies and reporting. The objective of our study was to examine whether between-group differentiation was possible by focusing on factors that had shown promise. It wa...
Clinically, short foot exercise (SFE) is provided to raise the medial longitudinal arch. However, there is no evidence whether this intervention could change the stiffness of medial plantar soft tissue during SFE. The findings in this study demonstrated that Novel Foot Plantar Dynamometer (NFPD), wh...
The purpose of this study to explore the effect of a 12-week gait retraining program with the minimalist shoes on impact force and lower limb biomechanics. We found that the 12-week gait retraining program with minimalist shoe could effectively convert the rearfoot strike runners who used to wear cu...
This study examined the effect of arch-support insole on knee joint biomechanics during stop-jumping. Thirty university basketball players performed stop-jump task in two insole conditions (arch-support and flat). The present results revealed that athletes wearing arch-support insole experienced lar...
Coordinated muscle contractions are vital for daily functional movements. This study investigated the differences in the muscular activation of the elbow flexors and extensors of two different age groups, during extension movements of the elbow. Fifteen healthy adults and eight healthy children were...
We tested six subjects leaning with vs. without assistance from a spring-powered exosuit. We quantified the effect on back muscle fatigue rate. We found that five of the six subjects showed significant reductions in fatigue rate (ranging from 19-85%) for a subset of lumbar muscles (ranging from one ...
[Purpose] The purpose of this study was to investigate the effect of Rocker Sole (RS) with Pivot Point (PP) on the metatarsal head (MTH) on lower extremity joint angle during gait. [Methods] Ten healthy men underwent three-dimensional gait analysis while walking wearing RS and postoperative shoes (P...
The aim of this study was to investigate the effect of Kinesio taping (KT) on female college students by fatigue intervention, on stop-jump task. Eleven female athletes served as subject. Two force plates and ten cameras were synchronized to capture the stop-jump task. The kinematics results found t...
High impact forces are a risk factor for injuries in jump-landing tasks. Strategies to reduce impact during training may help to protect against these risks. Here we describe the impact forces experienced during landing tasks using a model of rebound shoe commercially available. We found that the sh...
An effective technique is essential to stabilize the patella in subjects with tight iliotibial band (ITB). The purpose of this study was to determine the effects of ITB stretching in the modified Thomas test position on ITB flexibility, lateral patellar translation, and vastus medialis oblique (VMO)...
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