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Current methods for quantifying gait improvement in idiopathic normal pressure hydrocephalus (iNPH) are subjective and incomplete. This study demonstrates that patients with iNPH who have undergone ventricular peritoneal (VP) shunt placement demonstrate improvements in gait but still are impaired in...
Gait, considered by many, is distinguishable between individuals, making gait a viable security measure. The long-term goal of this research is to identify specific individuals wearing clothing with a high level of accuracy using a convolutional neural network (CNN). In this study, a supervised bina...
In this work, a device that can create unstable lifting loads was designed and assessed. The device can create up to 64 N of unexpected load within a crate that is being lifted. This device will be used in the future to examine the effects of such unexpected loads on lumbar lifting dynamics.
We have previously shown that volumetric imaging of native intervertebral disc (IVD) is possible using synchrotron x-ray microtomography (sCT) [1]. Subsequently, we have imaged an intact disc under sequential compression for structural deformation characterisation and strain measurement. Our latest ...
Misalignment between optimal lengths of individual muscles will affect the force-length (F-L) properties of a group of muscles acting synergistically at a joint. This misalignment can arise from differences in the properties of the muscles and of their tendons. To show how misalignment affects the g...
This study was designed to understand the influence of a spine self-mobilization exercise program on postural stability in the antero-posterior (AP) and medio-lateral (ML) directions. The center of pressure (CoP) was quantified while young healthy adults were standing with eyes open and closed. Resu...
The potential for use of magneto-inertial sensors into an in-field sport setting is highlighted by providing a general overview of the spreading in their use through different sports disciplines and applications. Information is given on risk profile assessment (e.g. studying injury mechanisms to hig...
The findings from recent investigations have alluded to a greater reliance on visual information and processing in individuals following anterior cruciate ligament reconstruction (ACLR) during motor tasks involving the knee. The objective of this study was to determine how manipulation of visual inf...
This abstract presents methodology for modeling the energy storage and return properties of a semi-active variable-stiffness lower-limb prosthesis in the OpenSim musculoskeletal modeling platform. The prosthesis was modeled as a rigid hindfoot with an elastically hinged forefoot; stiffness was varie...
In order to successfully complete a drop snatch squat exercise, athletes must move their body quickly in order to get under the barbell at the appropriate time. This high velocity motion requires the performer to exert large forces. However, athletes must also position themselves accurately in order...
Mounting evidence reveals deficits in dynamic gait balance control persist in individuals with acute mild traumatic brain injury (mTBI) when assessed with sensitive whole body center of mass (COM) kinematics and a dual-task (DT) paradigm [1]. In this preliminary study eight veterans with symptoms of...
The aim of this study is to investigate how the gait kinetics of elderly change after stair negotiation. The Ground Reaction Force (GRF) during walking can be an important descriptor of human locomotion and can describe disturbance in gait. The GRF measurement of 33 female subjects (70.48±6.66 yrs)...
Subscapularis repair in Reverse Shoulder Arthroplasty is controversial and recent studies showed that it can decrease post-operative clinical scores when used with lateralized glenospheres. In this study a musculoskeletal model was used to investigate how glenosphere lateralization and subscapularis...
Soldiers routinely conduct load-carriage and associated physical training that elicits high physical demands and are believed to be the primary cause of musculoskeletal injury. Appropriately designed physical training can help mitigate injury risks. This study aimed to assess changes in lower-limb j...
Dynamic in vivo tracking of foot bone motion is challenging due to occlusions of the many small, close-packed bones. In this study, we investigated image resolution of dynamic biplanar videoradiography data and whether it affects the performance of bone tracking when using CT-derived models. Downsam...
Mini tightrope suspensionplasty is a surgery performed to reduce pain and improve function in individuals with arthritis of the thumb joint. The goal of this work was to determine and develop a 3D visualization that demonstrated changes due to this surgery. Post-surgery, thumb forces increased by 66...
A real-time dynamic MR sequence (acquisition time=10.5sec) was used to evaluate the in vivo finger biomechanical parameters during motion on ten healthy volunteers. Joint angle and moment arm of flexor digitorum profundus tendon were measured on the acquired images during motion at metacarpo-phalang...
High knee flexion postures (>120º) result in intersegmental contact of the lower limb. The purpose of this study was to quantify the effect of including 3D intersegmental contact on proximal tibia contact force estimations. Sixteen participants performed six high knee flexion postures while kinemat...
This study was conducted to investigate interaction during turning movement in competitive ballroom dance. Thirteen national high-level competitive ballroom dance couples and the current world competitive ballroom champion couple were participated. Movements were recorded at 240 Hz using two Xsens s...
Knee abduction moment (KAM) during drop vertical jump (DVJ) and hip abductor strength predict ACL injury prospectively. The purpose of this study was to determine relationships between these risk factors during a dynamic landing task. Kinematics and kinetics, including muscle forces, during DVJ were...
Grounded running is slow running without a flight phase. When young, athletic men changed their spontaneous running pattern – containing a flight phase – to grounded running, musculoskeletal and impact loading decreased. However, no information is available for runners who spontaneously perform ...
Soldiers perform physically demanding tasks that predispose them to an elevated risk of musculoskeletal injury (MSKI). Understanding joint loading during commonly performed tasks, e.g., load carriage, may improve MSKI prevention efforts, yet current research is limited. Using EMG-informed neuromuscu...
In order to analyze the golf swing, it is necessary to judge the point of the backswing top and the impact, and to divide the swing section. In this study, we propose a method that estimates each point in golf swing using only single sensor at various parts of the body and compares it with the most ...
Aged or knee osteoarthritis gait is commonly assessed via optical motion capture (MoCap). However, tracking changes or identifying deficits in gait in the real-world setting is difficult to accomplish with MoCap. In this study, we tested the ability of inertial measurement units (IMUs) to capture ga...
Older adults (OA) have challenges regulating stability during gait. This work sought to understand how aging influences anterior-posterior stability (AP), by examining ground reaction force (GRF) eccentricity generated by each limb. 28 younger-adults (YA)(18-31 years) and 28 OA(>65 years) completed ...
The purpose of this study was to test whether the lowering of swimmer’s body observed during 200-m maximal swimming is associated with inspiratory muscle fatigue. Ten well-trained swimmers performed maximal 200-m front crawl swimming in 25-m pool. A 3-D underwater motion capture system was used fo...
Hip-related pain can frequently affect young athletic individuals, including football players. To date, no studies have investigated hip biomechanics during running in football players with hip-related pain. The primary aim of this study was to evaluate sagittal and frontal plane hip kinematics and ...
This study examined the effects of osteoarthritis of the trailing knee on frontal and transverse plane moments during a golf swing. It showed that osteoarthritis reduces the moments about the affected knee and increases the loading on other joints.
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