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Trabecular microstructure was characterized in the proximal humerus in murine models of preganglionic and postganglionic BPBI. The preganglionic injury group had detriments in trabecular bone (e.g., BMD) in the affected forelimb compared to sham and postganglionic injury, consistent with restricted ...
“Bicycle-fit” is an interactive process aimed at changing bicycle parameters to achieve desired kinematics. Despite widespread “rules-of-thumb”, there is no research investigating the effect of how changing bicycle-fit affects lower extremity kinematics. This investigation found that only kn...
In reverse shoulder arthroplasty (RSA), controversy exists over whether to repair the subscapularis and infraspinatus muscles. The objectives of this study were to investigate the effect of rotator cuff deficiencies and repairs on deltoid force in RSA and assess for any interaction with humeral impl...
The purpose of this study was to examine relationship between kinetics and effectiveness of mechanical energy utilization during lifting phase of squat. Ten male students majoring physical education. Participants completed one repetition of a high-bar back squat using 75% of 1RM. Sagittal plane kine...
Longitudinal assessment of gait stability in populations with a higher risk of falling may enable novel fall prevention efforts. This study investigated the reliability of characterizing walking under different cognitive loads using gait stability measures. Within- and between-day reliability of sho...
We report frontal plane knee and ankle angulations from a study of incremental lateral wedging on joint biomechanics during walking. Trends of increasing ankle eversion were apparent in higher speed walking, whereas knee joint angular changes were of smaller magnitude with only a slight trend toward...
Few studies have examined the frontal-plane biomechanics of the hip during stationary cycling. Additionally, very few studies have examined adjusting saddle height on the frontal-plane biomechanics of the hip joint. This study examined the impact of adjusting saddle height based on knee flexion angl...
Visualisation is the connection of biomechanical analysis and virtual reality. This produces real-time results, by accurately monitoring movement and progress, using virtual reality to create a diverse, challenging, and controllable environment, representative of real-world situations [1]. This stud...
Human induced pluripotent stem cell-derived cardiomyocyte (hiPSC-CM) tissue consists of heterogeneous CMs coupled by gap junctions. Electromechanical effects of these couplings are estimated using a computer model. Simulations suggest that the electromechanical variability in the tissue is decreased...
People can continuously optimize their walking gait to reduce energetic cost. However, they do not always do so spontaneously. Here we tested the hypothesis that the cost gradient at the original optimum allows the nervous system to detect when the optimum has changed and thus re-optimize. Using a m...
Anterior cruciate ligament (ACL) injury has been shown to compromise joint position sense (JPS) in the knee, which is necessary for controlling joint positioning and movement. This study showed that mechanical noise vibration (MNV) improved JPS in the ACL reconstructed (ACLR) patients at 6 months af...
The purpose of this research is to evaluate the influence of surface condition of culture substrate on cell adhesion, cell activity and cell differentiation. It is well known that photofunctionalization on surfaces promotes the osteogenesis. It is common knowledge that cells strongly adhere to UV ir...
The aim of the study was to investigate effects of bilateral subthalamic deep brain stimulation (DBS) on lower limb kinematics during sit-to-stand (STS) in patients with advanced Parkinson's disease (PD). Each patient performed STS in a standard gait lab and kinematic analysis were conducted. Result...
Acceleration-based exercise (e.g. running, jumping) during growth in an avian model increases bone strength, and influences bone shape in a way that is suggestive of larger Achilles tendon moment arms.
Stability of motor behavior reduces when anticipating or initiating a state change. We explore the effect of anticipated movement and recent history of movement on the stability of the current manual state in a finger-force-production paradigm. We found that stability is reduced in anticipation of s...
Mechanical fatigue is the predominant etiology of stress fracture but the mechanism governing the fatigue failure of bone is poorly understood. Recent work from our lab suggests that intracortical microarchitecture is strongly associated with the fatigue life of bone. Vascular canals induce stress c...
Basketball is a sport that requires a high level of cognitive and mental effort. This mental effort might affect to technical skills such as shooting. Shooting depends on biomechanical factors that determine the path, accuracy, and performance. There is evidence that mental load and fatigue may caus...
Trabecular morphology correlates with the stiffness and strength of the cancellous bone. The present study aims to investigate the differences in the elastic modulus and nanostructure between the rod- and plate-like trabeculae. We dissected 37 rod-like and 11 plate-like trabeculae from the proximal ...
The objective of this study was to verify the reproducibility of a joint stress protocol previously to the electromyographic evaluations in subjects with PFD. Twenty women with PFD where evaluated through presence of pain, questionnaires, specific clinical tests for PFD, and superficial electromyogr...
Insertion torque and insertion energy for dental implants are influenced by bone density, implant geometry, surface roughness, and drill protocol to different degrees. The aim of this study was to investigate the influence of these factors on insertion torque and energy. Torque, displacement, and tw...
We investigated the effects of obesity on musculoskeletal pain at various regions of the upper torso, and shoulder range of motion (RoM) in community-based women. Obese women displayed increased musculoskeletal pain in the shoulders and arms, as well decreased shoulder RoM compared to their leaner c...
We developed and used a “falling dummy” to explore how¶ backward fall dynamics affect head impact severity. We¶ varied torso shape and hip stiffness, based on observations¶ from video-captured real-life falls in older adults. Peak linear¶ and angular head accelerations were higher with rotat...
Traumatic brain injuries have known negative effects on individuals. Brain morphometry plays a role in the degree of deformation of tissue under impact conditions. Two elastomer phantoms, one with true brain morphometric representation and the other with no morphometry, were subjected to the same lo...
With the cyclical changes of the menstrual cycle, women undergo several changes, such as mood, body mass, temperature, postural control and even muscle strength. Thus, the aim of this study was to investigate the relationship between the menstrual period, when the female hormones are lower, and chan...
This experiment aims to determine the connection between auditory cueing and how a person’s gait adjusts to the cadence of a metronome. In this study, eight healthy young participants walked at their preferred cadence and at a calculated rate of 20% increased and decreased cadence. We found that d...
We used finite element analysis to compare the effects of different support conditions on compression fractured vertebras. The results showed that front support is a better design for expandable bone implant systems.
In order to reduce the congestion related injuries in greyhound racing, a study was designed to verify the effect of the number of starters on greyhound racing dynamics. The results showed that the injury rates of races with 6 are lower compared to 7 and 8 start races. With 6 greyhounds in a race wh...
The progressive declines in motor function of multiple sclerosis (MS) are typically preceded by decreases in sensory function. The goal of our study was to evaluate the influence of a treatment that targets sensory nerve fibers (augmented Transcutaneous Electrical Nerve Stimulation; aTENS) on mobili...
In order to understand the mechanism of gastric motility, this paper presents a new approach to measure the principal direction of smooth muscle contraction in vivo and analyzes the difference of muscle contraction force by electrical stimulation between in vitro and in vivo for the same porcine sto...
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