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Exercise Science

Theses and Dissertations

Fatigue

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An Examination Of Inter-Limb Functional Asymmetry After A Fatiguing Bout Of Exercise In High Level Soccer Players, Nestor Urrea Apr 2023

An Examination Of Inter-Limb Functional Asymmetry After A Fatiguing Bout Of Exercise In High Level Soccer Players, Nestor Urrea

Theses and Dissertations

INTRODUCTION: Inter-limb functional asymmetries greater than 15% have been linked to a greater incidence of injury. Moreover, asymmetries greater than 10% have shown greater risk of injury and worsened sport performance, especially for strength and power capabilities, in athletes of multiple sports. Fatigue and sex are factors that seem to influence injury rates as well as greater asymmetries between limbs. This research project aims to investigate the effects of a fatiguing bout of exercise in strength and power inter-limb functional asymmetries in male and female soccer players. It was hypothesized that strength and power asymmetries are negatively affected after a …


The Regulation Of Skeletal Muscle Fatigue During The Progression Of Cancer Cachexia, Brandon N. Vanderveen Apr 2019

The Regulation Of Skeletal Muscle Fatigue During The Progression Of Cancer Cachexia, Brandon N. Vanderveen

Theses and Dissertations

Cachexia is the unintentional loss of body weight secondary to chronic disease and is prevalent is roughly 50% of cancer patients. The loss of body weight and skeletal muscle mass is reduced functional capacity associated with reduced life quality. The etiology of cachexia is multimodal and complex; however, cachexia has been linked to several systemic (e.g. chronic inflammation, hypogonadism, anemia, insulin resistance) and behavioral (e.g. anorexia, inactivity) changes that can compound to accelerate muscle mass and body weight loss. While several inflammatory cytokines are associated with cachexia’s disease progression, our laboratory has established that Interleukin-6 (IL-6) is a key regulator …


Lower Extremity Neuromechanics During A Forward-Side Jump Following Functional Fatigue In Patients With Ankle Instability, Hyun Kim Jun 2015

Lower Extremity Neuromechanics During A Forward-Side Jump Following Functional Fatigue In Patients With Ankle Instability, Hyun Kim

Theses and Dissertations

Ankle instability (AI) and fatigue impair neuromuscular control as well as dynamic joint stability of the lower extremity. No one has comprehensively examined the effects of AI and fatigue on neuromechanics of the lower extremity during a functional activity. Deficits associated with AI and fatigue could be additive in increasing the risk for injury in patients with AI. PURPOSE: To examine the interaction of AI and fatigue on lower extremity muscle activity, kinematic, and kinetic patterns during a forward-side jump. METHODS: 25 AI (23.3 ± 1.9 yrs, 176.5 ± 10.5 cm, 70.9 ± 11.4 kg), and 25 matched control subjects …


Kinematic Changes During A Marathon For Fast And Slow Runners, Maggie Man-Yee Chan-Roper Aug 2011

Kinematic Changes During A Marathon For Fast And Slow Runners, Maggie Man-Yee Chan-Roper

Theses and Dissertations

The purpose of this study was to describe kinematic changes that occur during an actual marathon. We hypothesized that (1) certain running kinematic measures would change between miles 5 and 25 of a marathon and (2) fast runners would demonstrate smaller changes than slow runners. Subjects (n = 179) were selected according to finish time (Range = 2:20:47 to 5:30:10). Two high-speed cameras were used to measure sagittal-plane kinematics at miles 5 and 25 of the marathon. The dependent variables were stride length, ground time, peak knee flexion during support and swing, and peak hip flexion and extension during swing. …


Effects Of Same-Day Strength Training On Serve Performance In Female Collegiate Tennis Players, Staci Kayleen Reynolds Mar 2005

Effects Of Same-Day Strength Training On Serve Performance In Female Collegiate Tennis Players, Staci Kayleen Reynolds

Theses and Dissertations

The purpose of this study was to evaluate the effects of same-day strength training on velocity and accuracy of a tennis serve among five female Division I intercollegiate athletes at the second and sixth week of a strength training program. Velocity and accuracy of 20 tennis serves were measured approximately four hours after a morning split-body (lower legs and trunk) strength training session termed the lift-day (LD) and were compared to measures taken on days that no lifting took place, termed the non-lift day (NLD). For each test day, velocity was multiplied by accuracy to provide an overall serve performance …