Medicine and Health Sciences Commons^™

Examination Of Physiological And Perceptual Responses During Sustained, Isometric, Fatiguing, Handgrip Exercise Anchored To Ratings Of Perceived Exertion, Minyoung Kwak

Theses and Dissertations--Kinesiology and Health Promotion

The purposes of this study were to: 1) Examine the patterns of force responses relative to critical force (CF) during submaximal, fatiguing, isometric handgrip exercise anchored to different rating of perceived exertion (RPE) levels (RPE=3, 5, and 7); 2) assess the loss of force during the task and the level of performance fatigability after each RPE hold; 3) examine the time course of changes and patterns of neuromuscular [electromyography (EMG) amplitude (AMP), mean power frequency (MPF), mechanomyography (MMG) AMP and MPF, and neuromuscular efficiency (NME) (i.e. force/EMG AMP)] and muscle oxygen saturation (% SmO₂) responses during each RPE …

Investigation Of Lower Extremity Neuromuscular Function In Individuals With And Without Diabetes, Roya Hoveizavi

Theses and Dissertations--Kinesiology and Health Promotion

Background: Diabetes mellitus is associated with notable neuromuscular and motor dysfunctions that could lead to an increased risk of plantar ulcers and amputations. Several contributing factors, including increased muscle-tendon stiffness and abnormal muscle activation pattern may influence the kinematics and kinetics of walking in people with diabetes and promote formation of plantar ulcers. Hyperglycemia and the resultant accelerated rate of glycation have been recognized as the leading cause of muscle and tendon degeneration, yet the precise mechanisms by which diabetes affects the biomechanical properties of the muscle-tendon unit remains unclear. Altered muscle activity during gait is observed in people with …

Food Insecurity On College Campuses: Addressing The Issue Through A Student-Centered Perspective, Thomas Ard

Theses and Dissertations--Kinesiology and Health Promotion

Research indicates food insecurity (FI) has become a consistent challenge for college students. However, more is needed regarding the students' lived experiences of food insecurity following the COVID-19 pandemic. Universities play a vital role in assisting students with food insecurity through food assistance programs, on-campus resources, and financial help, which impacts their physiological needs and academic performance. A better understanding of what influences students' perceptions and decisions about whether to engage in these resources is essential.

This dissertation's purpose was to explore how college students living with food insecurity experience engaging in food assistance programs (FAP). The study used a …

Reliability And Validity Of A Commercial Running Power Meter To Indicate Metabolic Workload During Endurance Running, James Harris Hudgins Iii

Theses and Dissertations--Kinesiology and Health Promotion

Commercial running power (RP) meters may provide endurance runners and coaches with improved precision for monitoring running intensity. Cyclists rely upon the relationship between cycling power and metabolic demand to regulate physiological intensity during training and racing, independent of changes in the physical environment (e.g., terrain, wind). Research demonstrates strong reliability and validity for a specific RP meter to indicate metabolic demand within controlled running conditions. However, several potential influences on this relationship have not been investigated. Therefore, four studies were conducted with the following aims:

- Study 1: Determine the inter-limb reliability and validity of a single-limb-based RP meter …

The Correlation Between Acl Injury & Concussion, Brandon Michael Phillips

Theses and Dissertations--Kinesiology and Health Promotion

Concussion (also known as mild traumatic brain injury) is a neurological injury that occurs after a blow to the head or neck area and can have affects to movement based on the severity of the injury. Mild traumatic brain injury has possible linkage to an increased risk of anterior cruciate ligament (ACL) injury. The purpose of this thesis was to assess the impact of prior concussion on lower extremity mechanics that are associated with risk of ACL injury. A total of 11 individuals with prior history of concussion and 11 healthy individuals without prior history of concussion (56.5 months since …

Etiology Of Firefighter Injuries: A Health Care Practitioner Perspective, Alyssa Quinn Eastman

Theses and Dissertations--Kinesiology and Health Promotion

BACKGROUND: Structural firefighting involves the performance of rigorous occupational tasks in unpredictable, dynamic, and hot environments which increases firefighters’ risk of injury. Specifically, the National Fire Protection Association reported that musculoskeletal injuries account for 56% of non-fireground and 41% of fireground injuries. Furthermore, physical training is the most common cause of injury, accounting for one-third of all injuries and resulting in 41% of post-injury absences from work. There is limited research identifying occupational and exercise injury risk factors among firefighters. However, experienced health care practitioners working with fire departments may provide critical insight into potential mechanisms of these common injuries. …

Comparison Of The Times To Exhaustion, Physiological, Perceptual, And Neuromusuclar Responses During Constant Heart Rate, Constant Vo2, And Constant Power Exercise, Pasquale Jiovanni Succi

Theses and Dissertations--Kinesiology and Health Promotion

The purposes of this study were to: 1) Determine if there are differences in the sustainability of exercise when anchored at critical heart rate (CHR), the VO₂ associated with CHR (VO₂CHR), or the power output associated with CHR (PCHR); 2) examine the patterns of responses in power output, metabolic (heart rate [HR], VO₂, respiration rate [RR]), neuromuscular (electromyographic [EMG] amplitude [AMP], mean power frequency [MPF], mechanomyographic [MMG] AMP and MPF, perceptual (rating of perceived exertion [RPE]), and muscle oxygenation responses (%SmO₂) during exercise anchored by HR, VO₂, and power output; and …

Examination Of Sex- And Limb-Specific Fatigue During Unilateral, Isometric Forearm Exercise, Caleb Christian Voskuil

Theses and Dissertations--Kinesiology and Health Promotion

The purpose of this study was to examine the effects of unilateral, isometric handgrip holds to failure for the dominant (Dm) and non-dominant (NDm) limb on ipsilateral ([IPS] exercised side) and contralateral ([CON] non-exercised side) performance fatigability. Twenty individuals participated in this study (Men [n =10]; Women [n = 10; Composite Demographics: Age: 22.2 years; Height: 174.4 cm; Body Mass: 75.0 kg) and completed three visits. Two, 6 s maximal voluntary isometric contractions (MVICs) for the Dm and NDm limb were performed during visit 1, followed by a familiarization of the fatigue test. Visits 2 and 3 included an isometric, …

Mechanical Deviations And Verbal-Cue Altered Gait In The Femoroacetabular Impingement Syndrome Population, Walter Menke

Theses and Dissertations--Kinesiology and Health Promotion

Femoroacetabular impingement syndrome (FAIS) is an abnormal physical hip morphology that causes functional changes and pain during gait. Mechanical gait differences in this population require further biomechanical investigation to elucidate characteristics unique to this group. Fixed speed gait trials were performed on force plates and analyzed in addition to isokinetic strength testing to find a multitude of biomechanical variables including joint moment, joint power, joint work, and peak joint angle. This work has discovered evidence of muscular deficits at the hip, specifically hip extension, as well as knee joint power contributions to gait when compared to controls. These findings suggest …

Examination Of Sex- And Intensity-Specific Fatigue During Bilateral Leg Extension Exercise, Taylor Kayln Dinyer

Theses and Dissertations--Kinesiology and Health Promotion

The purposes of this study were to: 1) examine sex-related differences in the performance of repetitions to failure below (CL_-10%, CL_-20%) and above (50%, 60%, 70%, and 80% 1RM) the critical load (CL) to make inferences regarding the mechanisms responsible for variability in the performance of repetitions to failure at varying loads; 2) examine the time course of neuromuscular and muscle oxygen saturation responses during the performance of repetitions to failure below and above the CL; 3) to make inferences regarding motor unit activation strategies used to maintain force during the completion of repetitions below and …

Knee Joint Loading Following Anterior Cruciate Ligament Reconstruction: Link To Patient Reported Outcomes And A Novel Method To Monitor With Wearable Sensors, Alex Spencer

Theses and Dissertations--Kinesiology and Health Promotion

Recovery from anterior cruciate ligament reconstruction (ACLR) commonly results in undesirable physical and patient-reported outcomes (PROs). Identification of modifiable factors such as knee contact force (KCF) early in rehabilitation that can improve these outcomes is important due to the rapid decrease in function, quality of life, and joint health in this population. Additionally, if noninvasive measurement of KCFs outside of a traditional laboratory were possible, clinicians could optimize patient treatment with personalized care. Therefore, there are two primary aims to this thesis: 1) quantify the link between KCF and PROs which measure pain, ability to perform activities of daily living, …

Effects Of Relative Inertial Load On Performance Measures And Quadriceps Electromyography During Flywheel Resistance Training Squats, Jason Todd Brantley Jr.

Theses and Dissertations--Kinesiology and Health Promotion

Flywheel resistance training (FRT) has become an increasingly popular modality for exercising due to its unique application of providing external resistance. Little is known about how changes in relative inertial loads affects performance and electromyography (EMG) activity. The purpose of this study was to examine how performance metrics and quadriceps EMG activity are affected by relative inertial load during FRT-based squats. Fifteen resistance trained individuals completed five sets of five repetitions of squats with varying relative inertial loads in random order. Peak Eccentric Power (PEP), Peak Concentric Power (PCP), average force, total work, and repetition time were measured. Surface level …

Application Of High Performance Training Strategies To Enhance Occupational Readiness In Law Enforcement Cadets, Gabriel Jose Martinez

Theses and Dissertations--Kinesiology and Health Promotion

Law enforcement requires cadets to achieve a requisite level of physical fitness to prepare for occupational demands. However, there is limited research on the effectiveness of academy exercise programs to optimize physical fitness and occupational physical ability through high performance training strategies more typically utilized in elite athletic populations. Furthermore, there is a paucity of research identifying physical fitness correlates of occupational performance. Collectively, this information will provide academies and practitioners with critical information to develop evidence-based training programs. Therefore, the purposes of this study were to: Aim 1) Examine the effectiveness of integrating autoregulatory progressive resistance exercise (APRE) and …

Methodological Considerations For The Determination Of The Critical Resistance For The Deadlift, Alexander C. Moss

Theses and Dissertations--Kinesiology and Health Promotion

This study determined if plate movement during conventional deadlifting affects critical resistance (CR) estimates derived from the linear work limit (W_lim) versus repetitions relationship. Eleven subjects completed 1-repetition maximum (1RM) deadlift testing followed by 8 visits, to determine the number of repetitions to failure at 50%, 60%, 70%, and 80% 1RM for both reset (RS) and touch-and-go (TG) methods, respectively. The CR was calculated as slope of the line of total work completed (repetitions × load [in kilograms]) versus total repetitions for each of four intensities (50-80% 1RM). The number of repetitions to failure were determined at CR …

Identifying And Predicting Intention To Quit Using Juul Among Emerging Adults, Jakob W. Hester

Theses and Dissertations--Kinesiology and Health Promotion

Objectives: (1) Describe intention to quit, (2) identify relationships between sociodemographic factors or social influences and intention to quit, (3) explore if Theory of Planned Behavior-informed constructs can predict intention to quit as well as identify which construct best predicts, and (4) discover if descriptive norms strengthen a predictive model of intention to quit among emerging adults currently using Juul. Participants: Full-time, first-year students currently using Juul, an e-cigarette product, at a large university in the southeastern United States (N = 182). Methods: A November 2018 online survey assessed sociodemographic characteristics, social influences, patterns of use, quit intention, and attitudes, …

Health Priorities, Current Lifestyle Behaviors, And Barriers To A Healthy Lifestyle Among Emergency Department Nurses, Shannon C. White

Theses and Dissertations--Kinesiology and Health Promotion

Background: Emergency nurses are tasked with managing the hectic, unpredictable, and constantly changing environment of an ED. In addition, emergency nurses have been shown to have high levels of stress, irregular meal schedules, rotating shift work, long hours, and a lack of physical activity. Furthermore, research has suggested that nurses are at an increased risk for non-communicable diseases, such as diabetes, hypertension, and coronary heart disease (Phiri, et al., 2014), in addition to a high prevalence of obesity (Kyle, et al., 2016).

Methodology: In this study, 23 emergency nurses completed a 43-item survey regarding current behaviors and constructs of …

The Effects Of Curcumin And Fenugreek Soluble Fiber On The Physical Working Capacity At The Fatigue Threshold, Peak Oxygen Consumption, And Time To Exhaustion, Lauren Herrick

Theses and Dissertations--Kinesiology and Health Promotion

Curcumin, a polyphenol, has been suggested to improve metabolic byproduct clearance and increase nitric oxide production in working muscle. These purported effects may delay neuromuscular fatigue. Therefore, the purpose of this study was to examine the effects of curcumin in combination with fenugreek (CUR) or fenugreek soluble fiber alone (FEN) on the neuromuscular fatigue threshold (PWC_FT), time to exhaustion (T_lim) on a graded exercise test (GXT), and O₂peak in untrained subjects.Forty-seven,college-aged, aerobically untrained individuals were randomly assigned to one of three supplementation groups; placebo (PLA, n=15),curcumin + fenugreek, CurQfen® (CUR, n=18), or fenugreek soluble …

Chronic Low Intensity Continuous And Interval Training Prevent Heart Failure-Related Coronary Artery Stiffness, An Ouyang

Theses and Dissertations--Kinesiology and Health Promotion

Heart failure (HF) induced by aortic pressure over-load is associated with increased coronary artery stiffness. Perivascular adipose tissue (PVAT) and advanced glycation end products (AGE) both promote arterial stiffness. However, the mechanisms by which coronary PVAT promotes arterial stiffness and the efficacy of exercise to prevent coronary stiffness are unknown. The present study hypothesized both chronic continuous and interval exercise training would prevent coronary artery stiffness associated with inhibition of PVAT secreted AGE. Yucatan mininature swine were divided into four groups: control-sedentary (CON), aortic-banded sedentary heart failure (HF), aortic-banded HF continuous exercise trained (HF+CONT), and aortic-banded HF interval exercise trained …

Susceptibility To Ankle Sprain Injury Between Dominant And Non-Dominant Leg During Jump Landings, Riley Pashak

Theses and Dissertations--Kinesiology and Health Promotion

Ankle sprains are one of the most common injuries within athletics in the United States with approximately one-million student athletes experiencing ankle sprains each year. Studies argue excessive or rapid ankle inversion occurring from jump landings may cause ankle sprains. Also, the effect of limb dominance on risk of ankle sprain is not well documented.

The aim of this study was to determine if there is an affect of leg dominance on landing mechanism of the ankle joint that predisposes either ankle joint to greater risk of ankle sprain.

Twelve recreationally active subjects were recruited and completed four maximal vertical …

Longitudinal Descriptive Profile Of Collegiate Pitchers Participating In A Summer Baseball League, Isabelle Leslie Gillis

Theses and Dissertations--Kinesiology and Health Promotion

The purpose of this study was to provide a longitudinal profile of pitching performance in a cohort of pitchers over two collegiate seasons and a summer league. Thus, this study utilized a longitudinal design to evaluate the impact of summer league participation on subsequent collegiate regular season pitching performance. Specifically, the performance of a cohort of Division 1 collegiate baseball pitchers during the 2018 Spring collegiate season, 2018 Summer League season, and the 2019 Spring collegiate season was evaluated and stratified by pitcher designation, arm dominance, and academic status. Analyses of variance were used to identify main and interaction effects …

Factors That Influence Maternal Feeding Decisions For Toddlers: Extending The Theory Of Planned Behavior, Elizabeth Lucas Combs

Theses and Dissertations--Kinesiology and Health Promotion

Establishing healthy eating behaviors is vital in the early years to help combat the development of obesity and other chronic diseases. Mothers play an invaluable role in shaping their children's eating habits through controlling what and when children eat as well as the overall food environment, which is why a better understanding of what influences mothers’ decisions about these behaviors is important.

The purpose of the dissertation was to gain a better understanding of what impacts maternal feeding decisions regarding toddler nutrition behaviors. This was a two-phased mixed methods study. The aim of the initial study was to explore, using …

Effects Of Curcumin And Fenugreek Soluble Fiber Supplements On Submaximal And Maximal Aerobic Performance Indices In Untrained College-Aged Subjects, Jensen Goh Zhong Sheng

Theses and Dissertations--Kinesiology and Health Promotion

Submaximal exercise performance is, in part, limited by the accumulation of metabolic byproducts and energy system capacities. Curcumin and the combination of curcumin and fenugreek soluble fiber (CurQfen^®) have been shown to increase endogenous antioxidants and metabolic byproduct clearance as well as reduce inflammation and lipid peroxidation, and therefore, may enhance submaximal aerobic thresholds. In addition, there is evidence that the galactomannan component of fenugreek, used to enhance bioavailability of curcumin, may also have potential physiological effects related to the up regulation of free fatty acid oxidation Therefore, the purpose of this study was to examine the effects …

Muscle Synergy During A Single Leg Standing Test In Ambulatory Children With Cerebral Palsy, Brennan L. Smith

Theses and Dissertations--Kinesiology and Health Promotion

INTRODUCTION: Cerebral Palsy (CP) is a sensorimotor disorder characterized by dysfunctional motor coordination, balance problems, and loss of selective motor control. Motor coordination exhibited as co-contraction, has been subjectively quantified using gait analysis, but recent studies have begun to objectively analyze the amount of co-contraction by collecting electromyography (EMG) data. Center of pressure excursion (COPE) measurements collected during a single leg standing test (SLST) have shown to be more valid measurements of balance in populations with motor disabilities than a SLST alone. A recent study has correlated increased COPE velocity with a lower fall risk as determined by reported fall …

Using Foot Pressure Analysis To Predict Reoccurrence Of Deformity For Children With Unilateral Clubfoot, Juanita Jean Wallace

Theses and Dissertations--Kinesiology and Health Promotion

Reoccurrence of deformity can affect upwards of 64% of children with clubfoot. The ability to use foot function as a measure of reoccurrence has not been previously assessed. The purpose of this investigation was to utilize foot pressure analysis to predict the probability of reoccurrence in children with unilateral clubfoot. Retrospective foot pressure data revealed predictive algorithms detecting the probability of experiencing any type of reoccurrence (overall reoccurrence) and for experiencing a tibialis anterior tendon transfer (TATT). The equation for overall reoccurrence reported sensitivity and specificity of 0.82 and 0.81 and the equation for TATT reported values of 0.81 and …

Predictors Of Arterial Stiffness In Law Enforcement Officers, Jason Michael Keeler

Theses and Dissertations--Kinesiology and Health Promotion

The prevalence of cardiovascular disease (CVD) among law enforcement officers (LEOs) is slightly higher than the general population. Furthermore, the prevalence of CVD doubles among LEOs following retirement compared to the general population. The measure of arterial stiffness serves as an independent risk factor that has prognostic value for future incidence of CVD. However, there is limited research on lifestyle, occupational, and demographic factors that may be associated with increased arterial stiffness in LEOs. Therefore, the purpose of this investigation was to compare the level of arterial stiffness among LEOs versus the general population and to identify lifestyle, occupational, and …

The Effects Of A Worksite Wellness Program On Prescription Claims, Carrie Deann Davidson

Theses and Dissertations--Kinesiology and Health Promotion

The purpose of this study was to determine the effectiveness of the worksite wellness weight loss program called Weight Loss Matters (WLM) for employees at the University of Kentucky. The three main objectives were to measure the effect of Weight Loss Matters for employees from June 2006 to December 2011 in the following areas (1) prescription claims for hypertension, diabetes, and dyslipidemia, (2) weight loss, and (3) food diary compliance. Participants included 591 employees who participated in WLM for at least one session from 2006 to 2011 for whom there were data. This study employed a Quasi-experiment, longitudinal design. Data …

The Effect Of Personal Protective Equipment On Firefighter Occupational Performance, Ashley Y. Lesniak

Theses and Dissertations--Kinesiology and Health Promotion

Firefighting is a strenuous occupation that requires high-intensity work, resulting in prolonged periods of stress and physical exertion. The physical demand of performing firefighting tasks is augmented by the weight of personal protective equipment (PPE) worn (i.e., load carriage: LC) and the use of a self-contained breathing apparatus (SCBA). These factors have been shown to increase metabolic demand at submaximal workloads and decrease maximal aerobic capacity in laboratory settings. However, there is limited research evaluating the effects of these factors on occupational performance. Therefore, the primary purpose of this study was to quantify the detrimental effect of LC only and …

Self-Reported Adherence To Physical Activity For Cancer Survivors: An Update From The 2015 Nhis Database, Andrew Jackson Shearer

Theses and Dissertations--Kinesiology and Health Promotion

Cancer is the second leading cause of death in America. It’s been suggested that regular physical activity (PA) can improve health outcomes in cancer survivors. An estimate from BRFSS data (2009) suggested that 47% of all cancer survivors met recommended guidelines and that this estimate was not different from the population at large (48%). Several factors were examined from these BRFSS data to determine whether subgroups of survivors existed who might benefit from interventions aimed at improving their PA status. The purpose of this investigation was to obtain more recent estimates of adherence to established PA guidelines for cancer survivors. …

Center Of Pressure Excursion During A Single Leg Standing Test In Ambulatory Children With Cerebral Palsy, Ryan Thomas Callahan

Theses and Dissertations--Kinesiology and Health Promotion

INTRODUCTION: Cerebral Palsy (CP) is the most common disabling motor disorder found during childhood, occurring in 2.1-3.2 of every 1,000 births. Motor functionality of children with CP is commonly compromised and is classified with a gross motor function classification score (GMFCS) and with the gross motor function measure (GMFM). Balance ability has typically been assessed using single leg stance test (SLST) time but more recently, center of pressure excursion (COPE) has shown to be a more valid measurement in populations with altered motor abilities. However, COPE has not been used to test balance in the CP population, yet. This study …

Understanding The Links Of Mindfulness, Relationship Satisfaction, And Sexual Satisfaction, Elizabeth N. Greer

Theses and Dissertations--Kinesiology and Health Promotion

The purpose of the present study was to examine the relationship between mindfulness and its link to sexual satisfaction and relationship satisfaction. Data were collected from 809 individuals (18.8% bisexual, 60.7% straight, 19.2% gay/lesbian) in romantic relationships. Participants completed an online survey to measure mindfulness (five facets: observing of experience, describing with words, acting with awareness, non judging of inner experience, non reactivity to inner experience), sexual satisfaction, and relationship satisfaction. Results from two multivariate analyses (predicting sexual satisfaction and relationship satisfaction) revealed that relationship satisfaction is significantly predicted by three of the five facets of mindfulness – acting with …