Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 105 for “"Sagittal Plane"”.
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Biomechanical models of the finger in the sagittal plane
Finger movements in the sagittal plane mainly consist of flexion and extension about the metacarpophalangeal (MCP) and proximal interphalangeal (PIP) joints. The purpose of this study was to develop a biomedical finger model and to validate it by comparing finger strength and muscular forces in …
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Hip function characterization in the sagittal plane with varying gait speed
… capable of providing general hip behavior in the sagittal plane. Data was collected from two healthy, young subjects who walked at slow, normal and fast gait speeds. The hip can be modeled with a torque actuator and two independent, linear torsional springs, which are activated at different times …
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The influence of load on kinematics of computer-simulated sagittal-plane lifting.
… model was developed to simulate lifting in the sagittal plane. The eight-degree-of-freedom model included the ankle, knee, hip, shoulder, elbow, neck, and two back joints. Strength limits were assigned to model joints according to position-dependent average male data obtained from the …
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Hierarchical neural control of human postural balance and bipedal walking in sagittal plane
… an integrated hierarchical neural model of sagittal planar human postural balance and biped walking to 1) investigate an explicit mechanism of the cerebrocerebellar and other related neural systems, 2) explain the principles of human postural balancing and biped walking control in terms of …
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Sagittal plane characterization of normal human ankle function across a range of walking gait speeds
… mechanical elements that can reproduce the sagittal plane dynamics of a normal ankle. The dynamics of the ankle are taken from the analysis of the slow, normal, and fast gait of 10 healthy young subjects. Thus gait-speed-dependent changes in ankle function are evaluated. Characterization of …
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The Influence of Heel Height on Sagittal Plane Knee Kinematics during Landing Tasks in Recreationally Active Collegiate Females
… heights added to athletic shoe wear would alter sagittal plane knee kinematics when landing from jumping maneuvers. The hypothesis was that increased heel height would increase knee flexion at initial contact (KAIC), increase the peak knee flexion angle (KAPeak), and slow the rate of knee …
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Experimental and simulation-based assessment of the human postural response to sagittal plane perturbations with localized muscle fatigue and aging
… from a postural perturbation without stepping. Sagittal plane postural perturbations were administered to young and older groups of participants before and after exercises to fatigue the lumbar extensors or ankle plantar flexors. Measures of balance recovery were based on the COM and COP …
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Validation of a novel 2D motion analysis system to the gold standard in 3D motion analysis for calculation of sagittal plane kinematics
Movement analysis is a key component of clinical diagnosis, treatment prescription and follow up of gait disorders. Instrumented 3D gait analysis is often financially and technically inaccessible in clinical environments. Other established methods of gait analysis include video and visual …
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Considerations for and Implementations of Deliberative and Reactive Motion Planning Strategies for the Novel Actuated Rimless Spoke Wheel Robot IMPASS for the Two-Dimensional Sagittal Plane
… motion planning problem for the two-dimensional sagittal plane. The first approach is deliberative in nature and depends on fairly accurate terrain sensing. The motion planning first decides on a set of contact points based on obstacle configurations and a Lagrangian interpolation of the terrain. …
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The effect of position on the lumbar intervertebral disc.
… and 34 DLBP subjects were recruited to have sagittal and axial pMRI scans performed in sitting (Neutral, Flexed and Extended), standing and lying (Supine and Prone extension) positions. The sagittal plane migration of the nucleus pulposus (NP) of each lumbar IVD in each position was measured …
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Biomechanical Adaptations to an Implemented Ramp Angle in Recreational Alpine Skiers
… binding ramp angles (0°, 1°, 2°). Greater sagittal plane center of pressure excursions were observed with ski-booted tasks compared to barefoot conditions during squats and balance simulations. Squat tasks performed on skis resulted in more uncoordinated knee-ankle movement, however, this …
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A Comparison of Strength, ROM, Laxity, and Dynamic and Static Postural Control Between Those At-Risk and Healthy
… Lunge Test (WBLT), concentric strength of sagittal-plane ankle and knee movers using the Biodex, and ankle laxity using an instrumented ankle arthrometer. Main Outcome Measures: The normalized reach distance of the SEBT-A was calculated as the average of the three reach distances (cm) …
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Lower body mechanics of golf swing and its association with maximum clubhead speed in skilled golfers
… Therefore, the pelvis motion in the frontal plane was identified as the good consistent indicator of clubhead speed in skilled golfers.Among RJM parameters,the right hip extensor (r = .396, .667, and .732 for driver, 5-iron, and pitching wedge, respectively) and left knee extensor moments (r …
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Exploiting inherent robustness and natural dynamics in the control of bipedal walking robots
… development of three planar (motion only in the sagittal plane) control algorithms. The first uses simple strategies to control the robot to walk. The second exploits the natural dynamics of a kneecap, compliant ankle, and passive swing-leg. The third achieves fast swing of the swing-leg in order …
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The direct effects of variations in AFO stiffness on the kinematics and kinetics of gait
… the stiffness of each type of orthosis in the sagittal plane. The Vicon motion capture system and four Kistler force plates were used to determine the immediate effects of the AFOs on kinematic and kinetic gait characteristics in the sagittal plane. To carry out the gait analysis, one …
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An Observational study of changes in cervical inter-vertebral motion and the relationship with patient-reported outcomes in patients undergoing spinal manipulative therapy for neck pain.
… therapy for neck pain. The present work examined sagittal plane cervical inter-vertebral kinematics in patients and healthy volunteers to explore whether motion is different in patients with neck pain, if manipulation is associated with changing cervical kinematics, and if changes are related to …
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Establishing Normal Motion Between the Thigh to Pelvis and Trunk to Pelvis Segments in Female, Collegiate Volleyball and Soccer Athletes
… leg stance to the double leg stance in the sagittal plane. There were differences in the frontal and transverse planes, but not the sagittal plane when changing positions from a double leg to a single leg stance. The data from this study also suggest that during the jump and step-down tasks …
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The Development and Application of a Custom Robotic Biomechanical Testing Platform Employing Real-time Load-control to Compare Spinal Biomechanical Testing Protocols: Pure Moment, Ideal Follower Load, and a Novel Trunk Weight Protocol
… apply isolated loads primarily in the anatomical planes. Although the primary goal of in vitro testing may not be the simulation of <em>in vivo</em> circumstances, the accurate recreation of the in vivo loading environment would reveal much regarding the passive biomechanics of the spine. To …
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Bioengineering Analysis of Traumatic Brain Injury
… a CT preprocessing pipeline, an automatic mid-sagittal plane detector and an automatic brain extractor. Using these tools, a novel concept of midplane shift (MPS) is developed to quantitatively evaluate the brain herniation condition across the mid-sagittal plane. In the meantime, a lesion …
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Design and Optimization of a Handle Robot for Providing Bodily Support to Elderly Persons
… to the user. The methodology requires only a sagittal plane video of the elderly user performing the postural change, and thus is rapid, scalable, and uniquely customizable to each user. A proof-of-concept prototype was built, and the optimization algorithm for handle location was validated …
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