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Theses/Dissertations

Kinesiology

Graduate Theses and Dissertations

Biomechanics

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The Effects Of Running Speed, Form, And Fatigue On Intervertebral Disc Pressures At L5/S1: A Developmental Musculoskeletal And Finite Element Modeling Approach, Jeffrey Ray Mcclellan Jan 2018

The Effects Of Running Speed, Form, And Fatigue On Intervertebral Disc Pressures At L5/S1: A Developmental Musculoskeletal And Finite Element Modeling Approach, Jeffrey Ray Mcclellan

Graduate Theses and Dissertations

The occurrence of low back pain in society is a widespread and costly problem, while running is an accessible and common form of physical exercise. The intervertebral disc is a commonly studied location of interest within the low back, however limited research has been performed attempting to assess the risks or benefits associated with running on the health of the intervertebral disc, with zero research which estimates in-vivo loading on the intervertebral disc during running. Meanwhile, the available literature is not in agreement on whether running poses more of a risk or a benefit to intervertebral disc health, with some ...


Biomechanical Analysis Of Bovine Lamina, Ray Jeffrey Lee Jan 2018

Biomechanical Analysis Of Bovine Lamina, Ray Jeffrey Lee

Graduate Theses and Dissertations

Bovine lameness is an economic drain on producers and is a welfare issue. There are many causes of lameness; however, most causes involve the hoof. One of the supporting structures of the hoof is the interface between the hard epidermal layer and the sensitive dermal layer and is referred to as the lamina. Lamina consist of leaflets of tissue that interdigitate with one another to allow for constant renewal and remodeling of these hoof attachments. Systemic or traumatic insults can compromise the integrity of the lamina and may result in reduced ambulatory capabilities of the animal, pain, and a myriad ...


Rehabilitating Asymmetric Gait Using Asymmetry, Tyagi Ramakrishnan Nov 2017

Rehabilitating Asymmetric Gait Using Asymmetry, Tyagi Ramakrishnan

Graduate Theses and Dissertations

Human gait is a complex process that involves the coordination of the central nervous and muscular systems. A disruption to the either system results in the impairment of a person’s ability to walk. Impairments can be caused by neurological disorders such as stroke and physical conditions like amputation. There is not a standardized method to quantitatively assess the gait asymmetry of affected subjects. The purpose of this research is to understand the fundamental aspects of asymmetrical effects on the human body and improve rehabilitation techniques and devices. This research takes an interdisciplinary approach to address the limitations with current ...


The Development Of A Platform Interface With The Use Of Virtual Reality To Enhance Upper-Extremity Prosthetic Training And Rehabilitation, Ashley D. Knight Jun 2017

The Development Of A Platform Interface With The Use Of Virtual Reality To Enhance Upper-Extremity Prosthetic Training And Rehabilitation, Ashley D. Knight

Graduate Theses and Dissertations

This dissertation focuses on the investigation and development of an effective prosthetic training and rehabilitation platform with the use of virtual reality to facilitate an effective process to return amputees to the highest level of independence and functioning possible.

It has been reported that approximately 10 million people live with a limb loss worldwide, with around 30% being an upper-extremity amputee. The sudden loss of a hand or arm causes the loss of fine, coordinated movements, reduced joint range of motion (ROM), proprioceptive feedback and aesthetic appearance, all which can be improved with the use of a prosthesis and proper ...


Biomechanical Analysis Of The Transition From Cycling To Running For Triathletes, Katherine Meade Desimone Jan 2016

Biomechanical Analysis Of The Transition From Cycling To Running For Triathletes, Katherine Meade Desimone

Graduate Theses and Dissertations

Background: Injury rates among triathletes have been reported to be as high as 87%. Previous research has established that some triathletes display altered kinematics during running after cycling, compared to an isolated run. These kinematic changes include increased anterior pelvic tilt, decreased hip extension, and increased variability in stride length and time. The purpose of this study was to determine whether a hip flexor stretch performed in the brief transition period between cycling and running would result in a post-cycling (transition) run more similar to a control run.

Methods: Twelve participants performed a 5-minute baseline run, a 15-minute transition run ...


Age-Associated Adaptations In Lower Limb Motor Patterns During Walking And Cycling, Harsh Harish Buddhadev Jan 2015

Age-Associated Adaptations In Lower Limb Motor Patterns During Walking And Cycling, Harsh Harish Buddhadev

Graduate Theses and Dissertations

Muscular strength and power generating ability decline with advancing age. Older adults adapt their lower limb motor patterns to cope with these declines in muscle function. When mechanical demands approach limits of lower limb muscular capacity, motor patterns must be adapted to produce a desired movement. The term “motor pattern” is used to broadly represent the kinematic and kinetic profile of a person accomplishing a given task. Generally, these adaptations involve higher reliance on stronger proximal muscles to compensate for limitations or weakness of distal muscles. Three studies were conducted to examine factors affecting differences between older and young adults ...


Skeletal Muscle Contraction Simulation: A Comparison In Modeling, Jonathan M. Ford Nov 2013

Skeletal Muscle Contraction Simulation: A Comparison In Modeling, Jonathan M. Ford

Graduate Theses and Dissertations

Computer generated three-dimensional (3-D) models are being used at increasing rates in the fields of entertainment, education, research, and engineering. One of the aspects of interest includes the behavior and function of the musculoskeletal system. One such tool used by engineers is the finite element method (FEM) to simulate the physics behind muscle mechanics. There are several ways to represent 3-D muscle geometry, namely a bulk, a central line of action and a spline model. The purpose of this study is to exmine how these three representations affect the overall outcome of muscle movement. This is examined in a series ...


Biomechanical Impact Of Lower-Body Ppe On The Football Athlete: An Evaluation And Redesign Of The Knee Pad, Brandon F. Moeller Jan 2013

Biomechanical Impact Of Lower-Body Ppe On The Football Athlete: An Evaluation And Redesign Of The Knee Pad, Brandon F. Moeller

Graduate Theses and Dissertations

Although football personal protective equipment (PPE) has developed considerably since the game's conception, knee pad design has lagged behind. Players at all levels of competition are dissatisfied with the device, claiming it impedes performance more than it protects from injury. To date, no published research has studied the football knee pad's effect on athletic performance, and no ergonomic evaluation of the design has been completed.

This research first created a new knee pad design based on survey feedback from 138 collegiate and high school football athletes. This new design, called the Vastus And Patella Protection with Range of ...


Evaluation Of Transfer Technologies To Preserve Shoulder Function In Sci, Karen Michelle Mann Jan 2012

Evaluation Of Transfer Technologies To Preserve Shoulder Function In Sci, Karen Michelle Mann

Graduate Theses and Dissertations

This study investigated a series of independent unassisted and device-assisted transfers from a wheelchair to vehicle mock-up and vice versa while simultaneously capturing kinematic, kinetic and electromyographic (EMG) data of impaired volunteers. The study provides a venue for observation and evaluation of upper extremity (UE) joint stresses, muscular force and functional demands associated with transfers in persons with spinal cord injury (SCI) to ultimately prevent UE injury, minimize excessive stress, preserve functionality and limit pain. If people with SCI lose function of their UEs, due to pain and/or degeneration, they must then rely on others for everyday tasks.

Five ...


Functional Movement Assessment For Individuals With Knee Osteoarthritis, Catherine A. Stevermer Jan 2010

Functional Movement Assessment For Individuals With Knee Osteoarthritis, Catherine A. Stevermer

Graduate Theses and Dissertations

The relationships between dynamic stability, lower extremity strength, and functional performance are not well-understood for individuals with knee pain due to osteoarthritis. The series of studies presented in this dissertation incorporate the assessment of functional movements for healthy older adults, individuals with symptoms of knee osteoarthritis, and individuals following total knee arthroplasty. The functional activities investigated in these populations included stair descent and sit-to-stand. This research was completed through a combination of kinematic techniques of motion analysis and kinetic assessment using multiple force platforms to evaluate joint moments, center of pressure parameters and weight-bearing asymmetry. The findings can be summarized ...


Skeletal Loading: Implications For Injury And Treatment, Stacey A. Meardon Jan 2009

Skeletal Loading: Implications For Injury And Treatment, Stacey A. Meardon

Graduate Theses and Dissertations

Physical activity is important for the overall health of individuals. Impacts that occur when the foot hits the ground have the potential to be an influential factor in both the etiology of overuse injury and the promotion of bone health. Stress injury to bone is considered the ultimate overuse injury and accounts for the nearly one fourth of injuries in active populations. This dissertation evaluates bone loading in three ways: in vivo strain gage measurement, a combination of experimental and modeling techniques, and tibial accelerometry. Emphasis was placed on the clinical implication of findings from such techniques on the treatment ...


Internal Structural Loading Of The Lower Extremity During Running: Implications For Skeletal Injury, William Brent Edwards Jan 2009

Internal Structural Loading Of The Lower Extremity During Running: Implications For Skeletal Injury, William Brent Edwards

Graduate Theses and Dissertations

Running is a popular activity of choice for many, and a necessity for athletes and military personnel. The positive physiological adaptations associated with running are well established, and these adaptations can only be exploited if runners remain free from overuse injury. This dissertation utilized a combination of experimentation, musculoskeletal modeling, and a probabilistic model of bone damage, repair, and adaptation to investigate internal structural loading of the lower extremity during running. Specific emphasis was placed on stress fracture development, a common overuse injury that results, in part, from the mechanical fatigue of bone. A series of studies were conducted that ...


The Effects Of Detraining On Knee Biomechanics In A Stop-Jump Task: Implications For Acl Injury, Boyi Dai Jan 2009

The Effects Of Detraining On Knee Biomechanics In A Stop-Jump Task: Implications For Acl Injury, Boyi Dai

Graduate Theses and Dissertations

Background: The effects of training on the biomechanical risk factors of ACL injuries have been investigated, but no research has studied the effects of detraining on the knee biomechanics during sport-related movement.

Hypothesis: After one-month detraining, subjects would demonstrate greater biomechanical risk factors associated with ACL injuries.

Study Design: Longitudinal pre-post intervention study.

Methods: Twelve NCAA Division I female volleyball players participated in two stop-jump tests before and after a one-month season interval. Knee kinematics, kinetics, and electromyographic activity were assessed during the tasks.

Results: Subjects demonstrated significantly lower jump height, smaller initial knee flexion, smaller maximum knee flexion angle ...