Sports Sciences Commons^™

Player-Coach Perceptions Of Internal Load, Exertion, And Recovery In Collegiate Male Soccer Players, Michelle L. Eisenman

College of Graduate Studies: Theses & Dissertations

Periodization of athlete training load to improve performance and maximize recovery, while reducing injuries and overtraining, is essential in team sports. Understanding internal load responses and monitoring athlete exertion and recovery can help coaches during a competitive season. Recovery Status (PRS) and Rating of Perceived Exertion (RPE) are two subjective scales used to help quantify training load and recovery. These scales are more useful if there is an agreement between coaches (C) and players (P) assessment of intensity and recovery. PURPOSE: To assess subjective measures (PRS and RPE scores) from P and C during a 13-week competitive soccer season. Furthermore, …

Effects Of Four Years Of Collegiate Sport Participation On Non-Contact, Contact, And Collision Athletes During Gait, Kristen L. Neitz

College of Graduate Studies: Theses & Dissertations

College athletes are often exposed to many training sessions, stresses, and injuries throughout their collegiate career. They often experience pain, stiffness, swelling, reduced range of motion and many other feelings following participation.. Much research has focused on the acute effects of collegiate athletics, but the long term effect has not been well studied. Sports are often divided into groups based on the nature of play; the three main groups are non-contact, contact, and collision sports. Differences have not been observed between the three sport groups and their ability to complete activities of daily living such as walking following four years …

Self-Efficacy, Implicit Theories Of Ability, And 2 X 2 Achievement Goal Orientation: A Mediation Analysis In Collegiate Athletics, Cory Cottrell

College of Graduate Studies: Theses & Dissertations

Achievement goal theory encompasses the adaptive and maladaptive responses to achievement situations and has a strong background in sport research. (Dweck, 1986; Nicholls, 1984; Senko, Hulleman, & Harackiewicz, 2011). A 2007 meta-analysis established self-efficacy and implicit theories of ability as antecedents of achievement goal orientation (Payne, Youngcourt, Beaubien, 2007). Using the 2 x 2 achievement goal paradigm the purpose of the study looks to evaluate antecedents of self-efficacy and implicit theories of ability on achievement goal endorsement in collegiate student athletes. The current study examined implicit theories of ability as a mediator between self-efficacy and each of the 2 x …

Using Anthropometrics To Predict Performance In Division I Female Volleyball Athletes, Peter Chrysosferidis

College of Graduate Studies: Theses & Dissertations

The aim of this study was to examine the ability of anthropometrics (AP) to predict both performance testing (P) (n = 14) and game performance (GP) (n = 10) in female collegiate volleyball players; the relationship between AP and both P and GP. AP consisted of segment lengths and ratios, body height, weight, and fat mass. For P, sport-specific performance tests were conducted assessing power and agility. Attacking and defensive GP statistics were transcribed from Volleymetrics for analysis purposes. AP, P, and GP were normalized through the use of Z-scores by team (T), front row (FR), and back row players …

Baseline Postural Control Measures: An Indicator For Increased Injury Frequency Following Sports Related Concussion, Emily Belson

College of Graduate Studies: Theses & Dissertations

INTRODUCTION: An increase in acute lower extremity (LE) injuries have been observed in athletes following sports-related concussion.^{1, 2, 3} It has been suggested that lingering postural control deficits as a result of concussive injury, may play a role in the increased prevalence of injury.¹ PURPOSE: To investigate the relationship between baseline postural control metrics (Root Mean Square; Peak Excursion Velocity; Sample Entropy) and acute LE injury frequency in NCAA Division I student athletes (SA) with a previous history of concussion. METHODS: Eighty-four NCAA Division I SA were selected from a single university, 42 SA with a previous history …

An Objective Measure Of Sleep In Division I College Soccer Players Compared To The General College Population, Natalie Brown

College of Graduate Studies: Theses & Dissertations

Introduction: Sleep is necessary for proper recovery from daily life for both college athletes and students.

Purpose: To objectively evaluate the sleep quality of college athletes across gender, comparing them to a normal college student population.

Methods: A convenience sample of 104 subjects (19.39 ± 1.28 years), 42 Division college athletes and 62 comparison college students completed one week of data collection using the ActiGraph GT3X device. Wear time, sleep time, and wake time were recorded by each participant. Independent variables were athlete status and gender. Dependent variables were Total Sleep Time (TST), Wake After Sleep Onset (WASO), Latency, and …

The Effects Of Stimulant Medication On Reaction Time In Recreationally Active Individuals With Attention Deficit Hyperactivity Disorder, Nichole Ashley Lafortune

College of Graduate Studies: Theses & Dissertations

Context: Participants with Attention Deficit Hyperactivity Disorder (ADHD) have shown cognitive impairments that affect coordination, anticipation and planning. In the ADHD population, stimulant medication has shown to have beneficial outcomes for 75% of the people. Unfortunately, in most research, patients with ADHD are excluded and little is known about this population.

Purpose: Determine the effects of stimulant medication in recreationally active ADHD participants on reaction time.

Design: Cross-section between groups design

Methods: Participants were divided into two groups (ADHD and controls). Upon arrival to the Biomechanics Lab participants performed two tests, Mode A and Mode D on the Dynavision …

The Effect Of Repetitive Head Impacts On Postural Control Over The Course Of A Single Season, Katelyn E. Grimes

College of Graduate Studies: Theses & Dissertations

INTRODUCTION: Recently neurocognitive dysfunction has been linked to poor postural control in concussed athletes. While the detrimental effect of repetitive head impacts on cognitive function have been shown to mirror the effects of concussive injury, very little research has investigated the physical consequences of repetitive head impacts. PURPOSE: To observe the effects of RHI on postural control, both static and dynamic, in NCAA Division I athletes over the course of a single season. METHODS: 9 NCAA Division I football athletes (CON) were recruited from a single university as the experimental group, as well as 9 NCAA Division I baseball players …

Reliability And Validity Of The Gwalk For Use In Postural Control, Megan Mormile

College of Graduate Studies: Theses & Dissertations

Introduction: Clinical examinations are highly subjective when compared to the more sensitive and robust measures observed with force platform assessment. Currently, few methods exist to quantify objective postural control deficits in an easier and more accessible way for clinicians. Purpose: The purpose of this study was to examine the reliability and validity of a wireless inertial sensing device, the BTS GWalk, during postural control assessment. Methods: Fifty-six participants (27 male, 22 ± 1.9 years, 29 female, 21 ± 0.9 years) performed three trials each of quiet standing with eyes open (EO) and eyes closed (EC) on a force …

The Effects Of Beetroot Juice On Vo2max And Blood Pressure During Submaximal Exercise, Jose M. Perez

College of Graduate Studies: Theses & Dissertations

Supplementation with beetroot juice (BR) has been shown to reduce blood pressure (BP) at rest and improve several performance parameters during submaximal and maximal exercise. BR effects on BP during submaximal exercise have not been investigated. Furthermore, the effects of BR on VO₂max are inconclusive. The purpose of this study was to investigate the effects of BR on VO₂max and BP during submaximal exercise. 20 healthy, recreationally trained volunteers (age 21.8±2.35 years, weight 75.10±10.62 kg, height 177.4±6.39 cm) participated in this study, which had a double-blind placebo controlled randomized crossover design. Participants began supplementation with either …

Goal Orientation, Motivational Climate, And Exercise As Predictors Of Eating Disorder Risk Factors Among College Students, Carly Wahl

College of Graduate Studies: Theses & Dissertations

College is a transition period in a young adult’s life in which eating disorder symptomology is especially prevalent. Additionally, motivation-based factors such as goal orientation and motivational climate can influence these eating disorder-like behaviors, especially in a physical activity setting. The present study aimed to examine how goal orientation, motivational climate, and exercise could be used to predict a college students’ eating disorder symptomology. Participants included 276 college-aged males and females from a university in the southeastern United States. These participants had experience using the university recreation activity center and were recruited from a required healthful living course. Each participant …

The Reliability Of The Navicular Drop Test And Its Transferability To Dynamic Movement, Joshua Krispin

College of Graduate Studies: Theses & Dissertations

Background: Navicular drop can be defined as the distance the navicular tuberosity moves from a standing weight bearing to a standing neutral position, as the subtalar joint moves from a relaxed position to a neutral position. Navicular drop is an important measurement for clinicians used to describe foot function, pronation, and excessive movement seen in several pathologies. Objective: The purpose of this study is to see if navicular drop is influenced by mode or speed of locomotion, if it is will there be other influences such as the forefoot and heel soft tissue, and will those factors influence those measures. …

The Effects Of Chronic L-Carnitine And Carbohydrate Supplementation On Body Composition And Athletic Performance In Female Endurance Athletes., Melissa Eryn Stack

College of Graduate Studies: Theses & Dissertations

Purpose. The purpose of this study was to examine the effects of chronic L-carnitine and carbohydrate supplementation on body composition, perceived exertion, and athletic performance in recreationally-trained female endurance runners. Methods. On three separate occasions, twenty-one days a part, seven recreationally-trained female endurance runners performed a timed progressive treadmill test to exhaustion as well as a body composition assessment using the Bod PodÒ. Participants were randomly assigned to one of two groups – L-carnitine (LC) or L-carnitine plus carbohydrates (LC + CHO). The LC group consumed 2 g of L-carnitine L-tartrate and the LC + CHO group consumed 2 g …

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

College of Graduate Studies: Theses & 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 …

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

College of Graduate Studies: Theses & 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

College of Graduate Studies: Theses & 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 Relationship Between Core Stability Related Measures And Performance In Adolescent All-Star Cheerleaders, Rachel S. Leitz

College of Graduate Studies: Theses & Dissertations

Purpose: To determine if a relationship exists between core stability related measures (CSRM) and total cheer performance (TCP); including tumbling, jumping, and stunting. Secondly, to determine if TCP can be predicted by these CSRM.

Methods: Fifty female competitive cheerleading bases aged 10-18 from various all-star cheer programs in the southeastern region of the United States were included. Participants filled out a current health status questionnaire prior to participation. The CSRM included the timed sit-up test, trunk extensor endurance test, trunk flexion to extension range of motion, dominant limb single leg stance test, and normalized to height dominant limb single leg …

The Effects Of Subconcussive Impacts On Postural Stability, Eric Shiflett

College of Graduate Studies: Theses & Dissertations

Context: The effects of concussions on postural stability, both acutely and chronically, have been well studied and noted. However, whether subconcussive impacts lead to these same impairments is not heavily investigated. Objectives: The primary purpose of this study was to examine the effects of subconcussive impacts on postural stability in NCAA Division I football athletes. We hypothesized that all participants would show declines in postural stability following a single fall season. We also hypothesized that there would be no significant differences between groups from pre- to post-season measures. The secondary purpose was to predict deficits in postural stability based on …

Evaluation Of Linear And Nonlinear Postural Stability Measurements Following Concussion, Kelsey Evans

College of Graduate Studies: Theses & Dissertations

Sport related concussions affect nearly 1.6 to 3.8 million athletes annually in the United States. A large number of these athletes suffer from postural instability following concussion. Postural control assessment has become a recommended tool to determine readiness to return to play. Measurement of postural control through the use of center of pressure (CoP) variables may provide a sensitive evaluation following concussion and throughout recovery. Purpose: To evaluate a unipedal and bipedal quiet stance protocol consisting of linear and nonlinear CoP measurements with varying durations in a concussed population throughout recovery. Methods: Thirteen NCAA Division I Collegiate Football players (age: …

Utilization Of B-Mode Ultrasound As A Body Fat Estimate In Collegiate Football Players, Parker Hyde

College of Graduate Studies: Theses & Dissertations

The purpose of the present study was to validate a 7-site ultrasound imaging protocol to predict percent body fat (%BF) in a Division I football team. Body composition was estimated by ultrasound, seven site skinfolds (SKINFOLD), and the three compartment-water (3C-W) model of Siri (1961), using Bioimpedance spectroscopy (BIS) to estimate total body water (TBW) and air-displacement plethysmography (BODPOD^®) to determine body density (Db). Pearson’s product-moment correlation analyses were run to determine between Σ_Ultrasound and the criterion 3C-W, and between the Σ_Skinfold and Σ_Ultrasound. Strong positive correlations were observed between Σ_Skinfold and Σ …

Investigating The Effects Of Endurance Training On Heart Rate Variability In Female Swimmer Athletes, Joshua G. Beck

College of Graduate Studies: Theses & Dissertations

It is important for elite endurance athletes to have practical and reliable means of measuring fatigue throughout their training. Variations in Autonomic Nervous System activity (ANS) may provide an effective marker of fatigue and of recovery. ANS control of heart rate is well known to be affected by exercise training, and those adaptations can be determined using measures of heart rate variability (HRV). Previous research has examined the effect of training on HRV and ANS control of heart rate in males, there is a lack of any comprehensive studies that address adaptations in female athletes. Therefore, the purpose of this …

An Examination Of Behavioral And Temporal Consistency Of Pre-Performance Routines In Ncaa Division I Basketball Free Throw Shooting – A Naturalist Observational Investigation, Jacob Blumberg

College of Graduate Studies: Theses & Dissertations

Research has shown that pre-performance routines positively influence performance of closed and self-paced skills (Boutcher & Crews, 1987; Cohn, 1990; Otto et al., 2011). Boutcher and Crews (1987) suggested that pre-performance routines improve performance by helping reduce anxiety along with helping athletes’ retain mental sharpness and focus. Furthermore, several quantitative studies have examined the influence of both behavioral and temporal consistency of pre-performance routines on the success of a skill, yielding inconsistent results (Boutcher & Crews, 1987; Lobmeyer & Wasserman, 1986; Lonsdale & Tam, 2008; Jackson, 2003). However, research examining this phenomenon from a qualitative and naturalistic observational perspective is …

Concussion Reporting Rates At The Conclusion Of A Collegiate Athletic Career, Frances C. Gilbert

College of Graduate Studies: Theses & Dissertations

Context: Concussions are common sports-related head injuries, with an estimated 1.6-3.8 million sport-related traumatic brain injuries occurring each year. Proper diagnosis of a concussion often lies in self-reporting symptoms, however, an estimated 50-80% of concussions remain unreported. More than half of college athletes indicate they have no head injury knowledge including potential consequences, however, more than 80% would have reported a head injury if they had understood the potential risks. This lack of knowledge may create the potential for unrecognized concussive injury, therefore causing vast underreporting. Objective: The purpose of this study is to evaluate the current reported …

An Interval Training Bout On Cognitive Performance In Healthy Adults, David Young

College of Graduate Studies: Theses & Dissertations

Cognitive performance has been shown to improve with regular aerobic exercise training. Despite this, most Americans do not adhere to current exercise prescription guidelines. High intensity interval training (HIIT) has been suggested as a lower time commitment, more enjoyable alternative to regular aerobic exercise. Twenty nine apparently healthy college-aged adults were recruited and administered a high intensity interval training session with a pre- and 24 hours-post-exercise cognitive performance test. No changes were found in performance following the bout of high intensity interval training. No significant interactions were observed when comparing performance to gender, training age, training goal, or intra-exercise rating …

Landing Technique Assessment Utilizing Laboratory-Based Landing And Simulated Basketball Landing Tasks, Hiromi Kowata

College of Graduate Studies: Theses & Dissertations

Context: The Landing Error Scoring System (LESS) is a two-dimensional landing technique assessment tool that is readily available to clinicians. However, the LESS merely assesses a contrived landing, rather than dynamic, complex movements that may occur during actual athletic performance. Objective: To compare the LESS scores and knee joint kinematics between the LESS vertical-drop jump (DVJ), and two simulated basketball landing performances, jump-stop jump shot (JS) and rebounding (RB). Design: Prospective, cross-sectional study. Setting: An intramural basketball court. Participants: Twenty-five female recreational basketball players (Age: 20.96±1.70, Height (cm): 166.07 ± 9.10, Weight (kg): 68.54 ±12.17). Intervention(s) …

Choice Response Time Differences Between Recently Recovered Concussed And Healthy Student-Athletes, Tiffen Tapia-Lovler

College of Graduate Studies: Theses & Dissertations

Some 1.6 to 3.8 million sports-related concussions occur annually in the United States. Utilization of test batteries and exercise protocols are recommended to ensure athletes recover completely. Many batteries involve response time (RT) tests, which show response time increases post concussion. A major limitation of RT tests is that all are done in static position. Additionally, many studies show a lingering effect on RT. The addition of RT tests to check for lingering symptoms could be beneficial. The purpose of this study was to see if significant differences could be found in RT tests involving dynamic movement between healthy studentathletes …

Effect Of Honey On Anaerobic Performance In Male Collegiate Soccer Players, Katelyn G. Woolfolk

College of Graduate Studies: Theses & Dissertations

Author's abstract: Carbohydrate supplementation has been associated with increased performance in aerobic and anaerobic activity. Honey, specifically, has shown to increase performance in aerobic exercise as well as provide other health benefits. The purpose of this study was to see if honey, a natural substance, has a positive effect on anaerobic performance, rates of perceived exertion, and gastrointestinal distress. Subjects consisted of 18 healthy, Division 1 collegiate male soccer players (19.39 ± 0.85 yr, 75.39 ± 7.97 kg). All had no allergies and were cleared for participation by a certified athletic trainer. Subjects were randomly assigned to one of three …

Motivation, Need Support And Need Satisfaction In Youth Soccer Players, Erica Lippitt

College of Graduate Studies: Theses & Dissertations

Author's abstract: Physical activity levels and obesity rates vary greatly across ethnic groups in the United States (CDC, 2011). One popular way to increase physical activity levels in youth is through youth sport participation, which may be influenced by athlete motivation. Numerous studies have determined motivation levels in youth sport participants, but very little done in comparing levels across different ethnic groups. Identifying differences in motivation levels based on ethnicity can allow coaches and sport administrators to adjust practices and program setups to increase participation and meet needs of player competence. The purpose of the study was to determine if …

Fear Of Failure, Experience, And Division As Predictors Of State Anxiety In Usfa Epee Fencers, Elizabeth Helen Athanas

College of Graduate Studies: Theses & Dissertations

Research looks for the sources of state anxiety for individual athletes prior to competition, which can be debilitating (Gould, 1993; Gould, Horn & Spreeman, 1983). Non-elite athletes who are high trait anxious (possibly fear of failure) have higher state anxiety than elite athletes (Conroy, 2002; Gould, Horn & Spreeman, 1983). Fencers may be prone to elevated state anxiety. No research links these variables together in fencing. The purpose of the study is to examine fear of failure, experience, and division as predictors of state anxiety for epee fencers prior to competition. Epee fencers (N = 145) who competed in the …