Medicine and Health Sciences Commons^™

Identifying Determinants Of Match Performance In Division I Women’S Collegiate Soccer Players, Jacob L. Grazer

Electronic Theses and Dissertations

The purpose of this dissertation was to better understand position specific physical qualities and how they relate to high speed running performance throughout the course of a competitive collegiate soccer season. The amount of literature devoted to female soccer players is scarce when compared to the vast amount of literature associated with male soccer players. The objectives of this dissertation were: 1) to determine if playing position has an influence on physical qualities such as speed, change of direction ability, countermovement jump performance, relative strength, rate of force development, and intermittent endurance capacity, 2) investigate the differences between high and …

Tapering For Strength-Power Individual Event And Team Sport Athletes, Caleb Bazyler

Electronic Theses and Dissertations

The overall purpose of this dissertation was to address mechanistic and performance changes following a peaking phase in individual event and team sport strength-power athletes. This purpose was addressed by conducting 4 separate investigations with track and field athletes, volleyball athletes, and a national level weightlifter. The following are the primary findings from these investigations. Division I collegiate throwers increased competition throwing performance, jumping performance, and preserved muscle architecture characteristics following an overreach and taper. There were moderate decreases in division I female collegiate volleyball athlete’s vastus lateralis muscle thickness with no statistical changes in jumping performance following a taper …

Comparison Of Two Body Weight Screenings Of Self-Conscious Emotions And Coping, Rachel N. Nanez Ms.

Electronic Theses and Dissertations

Novel technologies are currently being utilized in fitness and clinical settings. However, there is not much research to examine the emotional responses to such screenings.

PURPOSE: To examine the group differences between the FIT3D and DXA protocol on emotional responses and the differences between weight classifications.

METHODS: The Body and Appearance-related Self-conscious Emotions Scale and WEIGHTCOPE were used to assess self-conscious emotions and intention to utilize 10 different weight-related coping strategies following the scans. Motivation was measured by a 10-point Likert scale measuring motivation pre and post scans.

RESULTS: There were no differences in motivation, affective response, or intention to …

Stop The Pricks: A Validation Study Of A Noninvasive Lactate Threshold Device, Rebecca M. Mcmorries

Electronic Theses and Dissertations

ABSTRACT

Purpose: The aim of this study is to assess the validity of a noninvasive lactate threshold device (NID) to determine lactate threshold heart rate (LTHR) and aerobic threshold heart rate (AeTHR).

Methods: Twenty-one recreational athletes completed a personalized graded exercise test on a treadmill. All participants wore the noninvasive device and blood lactate samples were taken at the end of 3-minute stages. Lactate threshold heart rate and aerobic threshold heart rate were then calculated using four traditional methods and compared against the same heart rate values calculated by the device.

Results: No significant differences were found in lactate threshold …

Relationship Of Force Variables To Vertical Jumps Performance, Hugo A. De Paula Santana

Electronic Theses and Dissertations

The isometric mid-thigh pull (IMTP) has been cited often in the scientific literature; however, there is still a lack of agreement as to the ideal body position used during this test, and how body position impacts the relationship between IMTP performance and dynamic performance. Thus, one aim of this dissertation was to compare two different IMTP positions and correlate the kinetic outputs from each position to vertical jump (VJ) performance. Another purpose of this dissertation was analyze which method of data normalization for IMTP force variables best correlates to squat jump (SJ) and countermovement jump (CMJ) performance.

In the first …

Examining The Motivations And Benefits Of Student-Athletes Performing Community Service., Matthew Ryan Huml

Electronic Theses and Dissertations

With over 460,000 active student-athletes (NCAA, n.d.), the student sub-population is large enough to investigate potential options for institutions to increase their academic achievement. Additionally, participating in academic-related activities is especially important because of concerns about student-athletes spending more than the 20 hours per week the NCAA allows for working on their sport (Wolverton, 2008). Studies frequently highlight a lack of effort by student-athletes to adjust to academic opportunities and expectations within higher education (Adler & Adler, 1991; Lally & Kerr, 2005; Levine, Etchison, & Oppenheimer, 2014; Miller & Kerr, 2003). To combat this adjustment to higher education, community service …

Mathematical Modeling Of Heart Rate Deflection Point In Relation To Respiratory Compensation And Treadmill Running Performance, Kayla Baker

Electronic Theses and Dissertations

Heart rate deflection point (HRDP), identified as the second breakpoint in the "intensity / heart rate" relationship, is indicative of the anaerobic threshold (AT). This point can be determined via bi-segmental linear regression (2SEG) or through use of the maximal distance model (D-max); however, the relationship between these methods has yet to be investigated 2. Purpose: To compare the use of 2SEG and D-max methods to determine HRDP and to examine the relationship between these values with a metabolic threshold, respiratory compensation point (RCP), as well as running performance [5,000 meter treadmill time trial (5Ktime)]. Methods: Nineteen recreationally active men …

The Reproducibility And Validity Of Using The Dmax Method To Predict Physical Working Capacity At Fatigue Threshold, Joshua Riffe

Electronic Theses and Dissertations

Although the original (ORG) physical working capacity at fatigue threshold (PWCFT) assessment has demonstrated strong reliability and sensitivity to training and/or nutritional interventions, limitations may exist regarding the method of PWCFT estimation. However, a relatively new mathematical method, called Dmax, has been shown to be objective and reliable when estimating metabolic and neuromuscular fatigue thresholds. To date, however, no study has examined whether the Dmax method for estimating the work rate at PWCFT is similar to the ORG method. PURPOSE: The purpose of this study is to evaluate the reliability and validity of the Dmax-EMG method for estimating and tracking …

Evaluation Of Echogenicity Within And Between Ultrasonographic Images Of The Vastus Lateralis, Alyssa Varanoske

Electronic Theses and Dissertations

PURPOSE: The purpose of this study was to examine the echo intensity (EI) values of different ultrasound (US) images of the vastus lateralis (VL) using panoramic imaging in the transverse plane (PTI) and still imaging in the longitudinal plane (SLI). Secondary purposes of this study were to examine VL homogeneity and to determine relationships between subcutaneous adipose tissue thickness (SubQ) adjacent to the muscle and EI. METHODS: Twenty-four recreationally trained collegiate males (20.2 ± 1.6 years; height: 178.1 ± 6.6 cm; weight: 82.2 ± 13.4 kg) participated in this investigation. EI, cross-sectional area (CSA), muscle thickness (MT), and SubQ of …

Changes In Neuromuscular Performance Throughout The Menstrual Cycle In Physically Active Females, Joseph D. Albert

Electronic Theses and Dissertations

Context: In the United States, an excess of $1 billion is spent annually on anterior cruciate ligament (ACL) repair surgeries/rehabilitation programs in varsity female sports. Research has indicated that female athletes may be 2 to 10 times more likely to sustain an ACL tear than their male counterparts. Objective: The purpose of this study was to analyze the neuromuscular changes in females during different phases of the menstrual cycle. Design: Observational Cohort Setting: Laboratory Participants: Fifty (50) physically active college aged females (25 on oral contraception) were recruited to participate in three separate visits throughout one menstrual cycle. The groups …

Effects Of Ischemic Preconditioning On Exercise Economy, Gungeet Kaur

Electronic Theses and Dissertations

Ischemic preconditioning (IPC) is the application of small bouts of ischemia followed by reperfusion. IPC has shown to enhance exercise performance in varied sports like 5K running, cycling and swimming. However, effect of ischemic preconditioning on running economy have not be investigated so far. We proposed that bilateral ischemic preconditioning will improve running economy in young healthy people. Methods: The study was a randomized single- blinded crossover study. Nineteen men and women were included in the study. Each participant underwent a sham and IPC trial using high pressure cuff (EC20 rapid cuff inflator, DE Hokanson, Inc.) followed by running economy …

Student-Athlete: A Study Of Student-Athlete Workload Compared With Traditional Student Workload, Chuck Provencio

Electronic Theses and Dissertations

Purpose: The purpose of this study was to collect and analyze data on the workload of students and student-athletes to determine if there is a significant difference in the workloads of student-athletes compared with non-athletes, including undergraduate and graduate students. It was hypothesized that student-athletes would spend more time in athletic activities, but would sacrifice time in other areas. Method: This analysis of variance study collected data from 22 students at South Dakota State University using the Student Activity Log and categorized those students using a combination of three of six labels (student-athlete or non-athlete, undergraduate or graduate, and working …

Effects Of A 10-Week Introductory Judo Course On Postural Control During Reactionary Bilateral Gripping Task With Varied Stances And Lower Body Power Performance, Tyler Muddle

Electronic Theses and Dissertations

PURPOSE: The purpose of the present study is twofold: 1.) Examine the effects of 10-weeks of an introductory judo course on postural control during maximal bilateral isometric handgrip testing using different stance conditions and lower body power performance, and 2.) To analyze the relationship between maximal bilateral handgrip exertions on postural control during varied stance conditions. METHODS: Twenty recreationally active men and women divided into two an experimental group, (JDO) (n = 10; 21.70 ± 3.83 y; 169.91 ± 6.01 cm; 73.89 ± 12.10 kg; 19.01 ± 8.06% BF), and a control group, (CON) (n = 10; 21.50 ± 2.84 …

Relationship Between Stress-Recovery State And Running Performance In Men's Collegiate Soccer, Nicholas A. Coker

Electronic Theses and Dissertations

Purpose: The purpose of this study was to evaluate the relationship between changes in running performance and the stress-recovery state in Division I collegiate soccer players. Methods: Running performance was evaluated in eight NCAA Division I male soccer players (179.39 ± 5.24 cm; 75.46 ± 5.98 kg; 20.37 ± 1.41 yrs.) over the course of 12 games during a single competitive season. The 12 games were divided into four blocks [B1(n=3), B2(n=3), B3(n=3), and B4(n=3)]. Running performance and game load were assessed using a wearable physiological harness and Global Positioning System (GPS) module. Game load, absolute distance, and distance covered …

The Effect Of Half Time Sports Drink Ingestion On Subsequent Half Performance In U16 Female Soccer Players During Consecutive Matches, Nadima Skeff Ms, Brandonn Harris, Amy Jo Riggs, Adam Wells, John Dobson, Nicholas Coker

Electronic Theses and Dissertations

The purpose of this study was to evaluate the effect of halftime sports drink ingestion on second half performance in U16 female soccer players using GPS technology. While 12 players initially took part in the study, only six players were included in the analysis (age, 15.97±0.45 years; height, 159.62±5.35cm; body mass, 54.87±4.25; body mass index, 21.58±2.10 kg·m^-2). In a double-blinded study design, twelve U16 female soccer players were randomly assigned to two groups (carbohydrate- sports drink or placebo). During half time of each game, players were provided with 500 ml of a drink and consumed the same liquid …

The Correlation Between Strength Levels Measured Through Dynamic Strength Exercises And The Incidence And Severity Of Injury Among Collegiate Athletes, Alex Jardine

Electronic Theses and Dissertations

Injury to athletes in sport occurs as a result of extrinsic and intrinsic risk factors. Mounting evidence points toward decreased strength as a predictor of injury in athletes. By comparing strength levels in functional movement patterns to injury, the strength and conditioning professional will be able to design effective training programs to reduce the incidence of injury in sport better. The purpose of this study was to determine the correlation between strength measured through dynamic strength exercises (power clean, the squat, and the bench press) among collegiate athletes and the incidence and severity of injury. We hypothesized that greater incidence …

Current Concussion Education Practices In Ncaa Member Institutions: A Descriptive Study, Samuel E. Johnson Ii

Electronic Theses and Dissertations

Purpose: To investigate concussion education implementation methods in NCAA member institutions.

Methods: Of the 1,078 athletic trainers across all NCAA Divisions that were contacted, 355 were included in this study. Participants were asked to complete the Current Concussion Education Practices Questionnaire (CCEPQ). The CCEPQ consisted of four sections: demographics, concussion education questionnaire, perceived effectiveness of concussion education, and limitations/barrier to providing concussion education. Outcome frequencies were used to report survey results. Respondent division-level categorical differences across survey items were assessed with a 2X3 chi-square test of independence.

Results: Providing concussion education occurs in 98.9% of NCAA member institutions. Educating student …

Longitudinal Examination Of Perceived Stress And Depression Symptomology In Division I Student-Athletes, Bobby Daigle

Electronic Theses and Dissertations

CONTEXT: Concussions are all too prevalent in amongst athletes. Concussions make up almost 5 percent of all collegiate athletic injuries. Concussions have been linked with many long lasting effects including depression and increased stress or anxiety.

OBJECTIVE: To longitudinally examine post-concussion depression and stress levels in National Collegiate Athletic Association Division 1 athletes.

DESIGN: Descriptive longitudinal study.

SETTING: National Collegiate Athletic Association Division I collegiate athletics.

PARTICIPANTS: Concussed and uninjured Division I collegiate athletes, ages 18-22, competing in football, women’s soccer, baseball, softball, and women’s track.

INTERVENTION(S): Participants completed the CES-D at baseline, 1 week, 1 month, and 3 months …

Differences In Running Mechanics Between Overweight/Obese And Healthy Weight Children, Kristen Roles

Electronic Theses and Dissertations

Background/Purpose: Physical activity is commonly prescribed to reduce childhood obesity. However, due to differences in mechanics during low-impact activities, such as walking, obese children may be more prone to negative physical complications during high-impact activities, such as running. Therefore, this study analyzed the mechanical differences in running mechanics between healthy weight (HW) and overweight/obese (OV/OB) children. We hypothesized that when compared to HW children, OV/OB children would display higher vertical loading, greater joint moments and greater joint angular impulses during running. We also expect decreased sagittal plane range of motion and increased frontal plane range of motion of the hip, …