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Theses/Dissertations

Kinesiology

Graduate Theses and Dissertations

Running

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Full-Text Articles in Life Sciences

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 ...


Bone Strain Change As A Result Of A Long Distance Run Modeled On A Finite Element Tibia, Jenna Kirstin Burnett Jan 2017

Bone Strain Change As A Result Of A Long Distance Run Modeled On A Finite Element Tibia, Jenna Kirstin Burnett

Graduate Theses and Dissertations

Stress injuries typically develop as a result of overuse and lack of recovery. However, despite a 7-year stress fracture incidence rate of approximately 40%, in vivo bone stresses and strains do not approach levels of ultimate strength. Therefore, there must be outside factors such as muscle fatigue which lead to increased strain and injury risks. PURPOSE: Muscle fatigue during a long distance run may lead to increased bone strain in the tibia, and result in increased injury risk. METHODS: Sixteen runners did a graded treadmill test to determine max heart rate and VO2,max, which were then used to set ...


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 ...


Rearfoot, Mid/Forefoot, And Barefoot Running: Biomechanical Differences Related To Injury, Elizabeth Rose Boyer Jan 2015

Rearfoot, Mid/Forefoot, And Barefoot Running: Biomechanical Differences Related To Injury, Elizabeth Rose Boyer

Graduate Theses and Dissertations

Running is an accessible, inexpensive form of exercise. However, running injuries are common and burdensome. Many runners are curious about switching to barefoot (BF) running or minimalist shoes to avoid injuries, which is commonly associated with rearfoot strikers (runners who land on the posterior third of their foot) landing on the middle or front third (mid- or forefoot strike; FFS). My purposes were to determine if undocumented aspects of FFS and BF running are beneficial or harmful compared to rearfoot striking (RFS), and if any potential benefits of FFS or BF running can be achieved by shortening one’s stride ...


The Effects Of Medial And Lateral Wedges On Iliotibial Band Strain During Overground Running, Evan M. Day Jan 2015

The Effects Of Medial And Lateral Wedges On Iliotibial Band Strain During Overground Running, Evan M. Day

Graduate Theses and Dissertations

Background: Iliotibial band syndrome (ITBS) is the leading cause of lateral knee pain in runners. Previous research has theorized that higher ITB strain rate leads to ITBS development. Orthotics are commonly used to correct gait mechanics and may reduce ITB strain and strain rate. The purpose of this research was to investigate how wedge inserts and gender affect kinematics, kinetics, and ITB strain and strain rate during running. Methods: Thirty (15 male, 15 female) participants ran with lateral 7°, lateral 3°, no wedge, medial 3°, and medial 7° wedges. A motion capture system and force platform were used to collect ...


Joint Contact Loading In Forefoot And Rearfoot Strike Patterns During Running, Brandon David Rooney Jan 2011

Joint Contact Loading In Forefoot And Rearfoot Strike Patterns During Running, Brandon David Rooney

Graduate Theses and Dissertations

Research concerning forefoot strike pattern (FFS) versus rearfoot strike pattern (RFS) during running has focused on the ground reaction force. The main purpose of this study was to determine the internal loading of the joints for each strike pattern. A secondary purpose was to determine if a converted runner can adequately represent the habitual population for both FFS and RFS. Using inverse dynamics to calculate the net joint moments and reaction forces, and optimization techniques to estimate muscle forces we determined the axial compressive load and rate of loading at the ankle, knee, and hip. Effect sizes (ES) were used ...


Medial Longitudinal Arch Mechanics Before And After A Prolonged Run, Elizabeth Rose Hageman Jan 2010

Medial Longitudinal Arch Mechanics Before And After A Prolonged Run, Elizabeth Rose Hageman

Graduate Theses and Dissertations

Collapse and reformation of the medial longitudinal arch during gait is controlled passively and actively. If either tissue group fatigues over the duration of a run, the change in arch mechanics may increase risk of running injuries. However, a 3-dimensional kinematic analysis of the medial longitudinal arch after a prolonged run has not been performed. Additionally, rarely has arch collapse been quantified for walking and running in the same study. PURPOSE: To compare arch mechanics before and after a 45 minute run and to compare walking and running arch deformation. METHODS: Thirty runners performed barefoot walking and running trials before ...


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 ...