Medicine and Health Sciences Commons^™

The Effect Of Technique Instruction On Biomechanical Risk Factors Associated With Acl Injury Risk In Female Recreational Athletes, Jeremiah Jackson Tate

Doctoral Dissertations

Background: Epidemiological studies have demonstrated higher ACL injury rates in female athletes when compared to males involved in the same sport. A recent meta-analysis of ACL injury prevention programs found that technique training was a common component of programs that were successful in reducing ACL injury.

Purpose: The primary purpose was to determine the immediate and long-term effects of technique training aimed at minimizing medial knee displacement during jump-landings in female recreational athletes. The secondary purpose was to determine if any transfer of skill occurred as a result of our technique training.

Study Design: Controlled laboratory study.

Methods: A total …

Convergent Validity Between Field Tests Of Isometric Core Strength, Functional Core Strength, And Sport Performance Variables In Female Soccer Players, Jeffrey Scott Wagner

Boise State University Theses and Dissertations

Introduction: Previous research has failed to definitively explain the role that core fitness plays during sport performance. Movements of sport performance require the core musculature to simultaneously provide spinal stability while producing external forces that aid limb movement. The core is central to most kinetic chains; therefore, a better understanding of core function during sport should help to benefit performance. Purpose: The purpose of this study was to compare tests of isometric core strength that evaluate the ability of the core to provide a stable base of support, and tests of concentric functional core strength that evaluate the ability of …

Development And Validation Of A Light Weight, Energy Dense, Ready To Eat (Rte) Bar, Jacob Wilhelm-Maria Heick

Master's Theses

DEVELOPMENT AND VALIDATION OF A LIGHT WEIGHT, ENERGY DENSE, READY TO EAT (RTE) BAR

Jacob Wilhelm-Maria Heick

Providing additional calories in the form of an RTE bar to endurance athletes will increase performance and muscle re-synthesis, reduce muscle breakdown, and shorten recovery time. An RTE bar containing a blend of dairy proteins and carbohydrates will create a product with superior functionality, including bioactive and immunity enhancing properties from dairy derived ingredients. The protein will provide benefits in the form of easily digestible calories, essential amino acids and physical satiate.

A formulation was developed and optimized, resulting in a final product …

We're Not Thugs And Rappers: An Examination Of African American Male Athletes' Perceptions Of The Media, Keia Janese Bragg

Masters Theses

Manipulation of stories and events expose issues of false representation and stereotyping within the mainstream media. This research examined the media’s role in shaping the behaviors and experiences of African American male athletes while using Critical Race Theory as the framework in conducting research. A focus group consisting of six former African American male student athletes was conducted. A semi-structured interview schedule was used in order to allow for open discussion. The Constant Comparison Method was instrumental in thematizing the data while QDA Miner software was used to analyze the data. The findings suggested that African American male athletes feel …

Variability Of Pacing In Marathon Distance Running, Thomas A. Haney Jr.

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purposes of this study were to describe variability of pacing during a marathon and to determine if there is a relationship between variability of pacing and marathon performance. A total of 301 race profiles that contained personal global positioning system (GPS) from the Rock „n‟ Roll Las Vegas (Race 1) and San Diego (Race 2) marathons were downloaded (http://connect.garmin.com) and analyzed. Each marathon finish time was placed into one of three finish time bins: Bin 1: 2.5 – 3.9 hrs, Bin 2: 4.0 – 4.6 hrs, Bin 3: 4.7 – 7.2. The coefficient of variation of velocity (Velcov) was …

The Physical Activity Patterns And Constraints Of Diverse Female College Students, Kathleen Victoria Minkel

UNLV Theses, Dissertations, Professional Papers, and Capstones

Diverse college aged females from a public university in the southwest were asked to participate in an online survey to determine their constraints to physical activity, as well as their current activity level. The groups were compared to establish the differences among the minority groups. Raymore, Crawford, and Godbey’s Hierarchical Model of Constraints was used as a framework when creating the survey. Data analysis showed only one significant difference among the racial/ethnic groups, when looking specifically at the intrapersonal, interpersonal, and structural constraints categories. Hispanic women differed significantly from Caucasian women in their perception of interpersonal constraints on their physical …

The Relationship Of Snowmobile Year, Track Length, And Riding Terrain To The Occurrence Of Musculosketetal Symptoms In Recreational Snowmobile Drivers, Erica L. Heisler

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this retrospective study was to examine the occurrence of musculoskeletal symptoms in recreational snowmobile drivers and relate them to the manufacture year of the snowmobile, the length of the track, and/or the riding terrain. Participants included 186 males and 57 females (n=243), aged 18 years and older, and were all snowmobile drivers. Subjects were asked to complete either an online survey or a paper survey to gather information about the year of snowmobile they drove, the track length of that snowmobile, the typical riding terrain they drove on, and any musculoskeletal symptoms they developed from driving snowmobile. …

Comparison Of Acute Physiological Effects Between Alternating Current And Pulsed Current Electrical Muscle Stimulation, Abdulaziz A. Aldayel

Theses: Doctorates and Masters

Electrical muscle stimulation (EMS) is widely used in rehabilitation and sport training, and alternating current and pulsed current EMS are commonly used. However, no systematic comparison between alternating and pulsed current EMS has been made in the previous studies. The main aim of this research was to compare acute physiological responses between the alternating and pulsed current EMS. The secondary purpose of the research was to investigate further muscle damage induced by EMS-evoked isometric contractions. Three experimental studies were conducted in the thesis project together with literature review about EMS.

The Effects Of A Combined Supplementation Of Creatine And Sodium Bicarbonate On Repeated Sprint Performance, James Jeremy Barber, Todd Hagobian, Karen Mcgaughey, Ann Yelmokas Mcdermott, Jennifer Davis Olmstead

Master's Theses

Abstract The Effects of a Combined Supplementation of Creatine and Sodium Bicarbonate on Repeated Sprint Performance James Jeremy Barber There is well-established research that suggests both creatine and sodium bicarbonate are effective ergogenic aids. However, only one published study has examined the combined effects of creatine and sodium bicarbonate. The primary purpose of this study was to determine if a combined supplementation of creatine monohydrate and sodium bicarbonate would further enhance the well-documented effects of creatine supplementation alone on repeated sprint performance. Thirteen healthy and fit males (Mean age = 21.15 ± 0.65 years and mean VO2 max = 66.72 …

The Effect Of Body Mass Index On Pedometer Accuracy In A Free-Living Environment, Brian Matthew Tyo

Doctoral Dissertations

The purpose of this dissertation was to determine if the New Lifestyles NL-2000 (NL) and the Digi-Walker SW-200 (DW), waist-mounted devices, yield similar daily step counts as compared to the StepWatch 3 (SW), an ankle-mounted device, worn by adults and children in the free-living environment.

For the first study, fifty-six adults (32.7 + 14.5 y) wore the devices for seven consecutive days. There were 20 normal weight, 18 overweight, and 18 obese participants. The NL and DW undercounted (pedometer error) similarly in the normal weight and overweight groups (-15.4% to -18.2%, respectively). However, the DW undercounted more than the NL …

Comparison Of Body Composition Between Physically Active And Inactive Wheelchair Users, Masaru Teramoto

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this study was to examine the association between regular physical activity and body composition in individuals with physical disabilities. The study was designed to compare body composition parameters between wheelchair users participating in adapted sports programs and those being physically inactive. Male wheelchair users were recruited and classified based on physical activity level (active or inactive) and disability type (paraplegic or quadriplegic). Regional and whole-body percent body fat (%BF), lean body mass (LBM), and bone mineral density (BMD) were assessed by dual-energy X-ray absorptiometry. These variables were then compared among the groups using a two-way between-groups multivariate …

An Evaluation Of The Motivations And Implications Of Participating In High School Athletics While Injured, Trevor M. Bateson

Recreation, Parks, and Tourism Administration

No abstract provided.

The Effects Of Hiking Pole Use On Physiological Variables And Rate Of Perceived Exertion While Hiking Uphill, Sunny Blue Atchison

Master's Theses

An increasing amount of hikers have added hiking poles to their outings to aid in reducing fatigue of the lower body and enhance stability. However, very little research has been conducted on the use of poles during continuous uphill hiking. The purpose of this study was to investigate the effect of pole use under field conditions on the rate of perceived exertion, physiological variables [oxygen consumption (VO2), heart rate (HR), non-protein respiratory exchange ratio (RER), & total energy expenditure (TEE)], and time to completion during a 1.68 km continuous uphill (12.6% grade) hike. Ten male and ten female (Mean age …

Women's Softball In Iran: An Autoethnographic Journey, Sarah J Hillyer

Doctoral Dissertations

This autoethnographic dissertation recounts numerous untold stories about my journeys into the Islamic Republic of Iran as a sports consultant and women’s softball coach for Global Sports Partners (GSP). Autoethnography as defined by Ellis & Bochner (2000), is “an autobiographical genre of writing and research that displays multiple layers of consciousness, connecting the personal to the cultural…Autoethnographers vary in their emphasis on the research process (graphy), on culture (ethnos), and on self (auto)” (pp. 739-740). Autoethnographers, writing within a branch of narrative inquiry (Ellis & Bochner, 2000), believe in the power of story and that humans learn through stories lived …

The Effects Of Practice Schedule And Self-Controlled Feedback Manipulations On The Acquisition And Retention Of Motor Skills, Joao Augusto De Camargo Barros

Doctoral Dissertations

In their challenge-point framework (CPF) Guadagnoli and Lee’s (2004) argue that learning is maximized when a person faces an optimal level of challenge during practice. It is suggested that challenge level can be manipulated through the combination of different practice variables. The purpose of this study was to investigate how practice schedule and self-controlled feedback frequency manipulations affect performance and learning of motor skills. Participants (n=96) attempted to learn three versions of a key-pressing task. The task consisted of pressing five computer keys in specified sequences in a goal criterion time. Participants were assigned to either a blocked practice schedule …

A Preliminary Investigation Into The Effect Of Kinesio And Athletic Tape On Skin Blood Flow Changes, Ryan Klawon

Masters Theses

This research tested the effectiveness of a relatively new therapeutic product called Kinesio tape. One of Kinesio tape's therapeutic claims is increased blood flow to the taped area and thus expediting the body's healing process (Fu et aI., 2007). The purpose of this study was to compare the effects of Kinesio tape versus athletic tape on blood flow in the upper arm during rest and immediately following submaximal exercise. Certified athletic trainers (ATC) often use regular athletic tape to limit the range of motion and stabilize a joint as opposed to providing therapeutic benefits such as increasing blood flow.

Research …

Static Versus Dynamic Stretching Effect On Agility Performance, Patrick Troumbley

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to compare effects of static and dynamic stretching on explosive agility movements, and to examine the effect of the interaction of dynamic and static stretching prior to explosive agility movements. Fourteen men and 10 women performed the different warm-up protocols, including no warm-up (NWU), static stretching (SS), dynamic stretching (DS), and dynamic stretching with static stretching (DS+SS). The T-Drill was used to assess agility. The results indicated no difference between the NWU and SS conditions (effect size = 0.40, p = 0.06), as well as no significant difference between the NWU and DS+SS conditions …

College Athletes' Perceptions Of Effective Coaching Behaviors And How Perceptions Influence Individual Performance And Team Satisfaction, David Brent Holstein

Ed.D. Dissertations

This study collected data both quantitatively and qualitatively on athletes’ perceptions of their current coaches and whether these perceptions influenced individual performance and team satisfaction as perceived by the athlete. Athletes at two community colleges participated (n=145) in the quantitative portion, the Athletes’ Perceptions of Effective Coaching Traits Questionnaire (APECT-Q), along with five being interviewed. Overall, on the APECT-Q it was found that athletes at the two schools felt their coach’s behaviors/traits did moderately to strongly influence their performance and team satisfaction. Conclusions and implications from both a theoretical and empirical perspective were discussed in an effort to continue to …

The Differences Of Personality Traits And Competitive Tendencies Between Female Collegiate Athletes And Females Majoring In Professional Competitive Fields, Terra Upham

Master's Theses

The purpose of this investigation was to compare the differences between collegiate female athletes to females majoring in professional competitive fields to (1) specific personality factors, (2) levels of competitiveness, and (3) differences in competitive levels with regard to classification year. Methods included discriminating the Big Five personality traits and competitive tendencies to ascertain if personality and competitiveness measures differed between, 23 female collegiate athletes and 27 female majors in traditionally competitive professions. Participants ranged from ages 18 through 43. Participants self-reported their individual demographics, personality traits, and levels of competitiveness through survey tests. The personality traits of extraversion, agreeableness, …

Mysticism And Mystery Moves: An Examination Of Flow Theory, John Michael Trembley

Masters Theses

This study takes a phenomenological approach to squirt kayaking. It looks to examine mystical states of consciousness, as defined by William James, and flow theory, as defined by Mihaly Csikszentmihalyi, and focuses on what these experiences mean for participants of the squirt kayaking community. The study poses three research questions. (1) Do squirt kayakers experience mystical states of consciousness through squirt kayaking, and what does this experience mean? (2) Do squirt kayakers experience flow states of consciousness through squirt kayaking, and how was this experienced? (3) What is the mystery zombie or the mystery trance state, and how is it …

Neuromechanical Analysis Of Anterior Cruciate Ligament Risk Factors In Female Collegiate Soccer Athletes, Nelson Cortes

Human Movement Sciences & Special Education Theses & Dissertations

The anterior cruciate ligament (ACL) acts in an essential role to prevent anterior tibial displacement when experiencing jump-landing forces that are applied to the lower extremity; more than 100,000 injuries per year in the United States in sport activities that often require landing, deceleration-acceleration, cutting and pivoting actions have been reported. The aim of this study was to examine the nature of any lower limb coupling differences between a drop-jump and a side-step cutting actions, assess kinematic and kinetic differences between three tasks, and evaluate the effects of two landing techniques in biomechanical risk factors while performing two unanticipated tasks. …

The Correlation Between Visual Observations And Inclinometric Measurements For Special Tests Related To Patellofemoral Pain Syndrome, Erin Quada

Human Movement Sciences & Special Education Theses & Dissertations

Patellofemoral pain syndrome (PFPS) is generally described as an insidious onset with pain increasing during running, jumping, ascending and descending stairs as well as sitting with the knees flexed for an extended period of time. Clinicians often use special tests in injury evaluations and range of motion assessments, usually making a visual observation of that status of the patient. The purpose of this study was to examine how interval measurements utilized in flexibility and range of motion assessments correlate with visual observations of special tests (active knee extension test, Thomas test, Ober's test, rectus femoris flexibility, and Craig's test). The …

The Effects Of An Anterior Cruciate Ligament Prevention Program And Retention Period On Lower Extremity Biomechanics, Ryan S. Mccann

Human Movement Sciences & Special Education Theses & Dissertations

Researchers have attempted to determine the effects of strength, flexibility, agility, and plyometric training, as well as expert feedback on biomechanical risk factors for anterior cruciate ligament (ACL) injuries. Currently, the literature lacks information regarding athletes' ability to retain adaptations made during programs designed to reduce biomechanical risk factors for ACL injuries. The purpose of this study was to determine the effects of a 10-week strength and agility program on lower extremity kinetics and kinematics of collegiate athletes immediately following training and after a 11-week retention period. Ten NCAA Division I female soccer players free of lower extremity injury, volunteered …

Building A Bridge Between Physical Therapists And Fitness Professionals: The Development Of A Business Plan For San Luis Sports Therapy Clinics, Ashley August Fittz

Master's Theses

The purpose of this project was to create a business plan for a profitable, self-sustaining, program to build a bridge between physical therapists and fitness professionals.

The Quick Fit Program was a new service for the existing business San Luis Sports Therapy. The program was designed to be implemented within each of the company’s physical therapy clinics in California using existing personnel and resources. The Quick Fit Program is one way in which physical therapy practices can diversify the services they offer to keep pace with the changing landscape of healthcare.

Clients in the Quick Fit Program would receive an …

A Program To Promote Physical Activity And Healthy Body Weight In An Adolescent Female: A Case Study, Katie Stoddard

Kinesiology and Public Health

A case study of an obese 14-year-old female was conducted to assess her body weight and dietary and physical activity habits. The purpose of this study was to promote weight loss through improved dietary practices and an increase in energy expenditure. This was done by monitoring and altering caloric intake and engaging in regular, vigorous physical activity. Furthermore, the subject increased health-related knowledge, developed new skills, and ultimately attempted behavior modification. From April to September 2009, the subject participated in a minimum of two supervised exercise sessions per week to increase her energy expenditure and to teach her strategies for …

Abdominal Muscle Activation And Caloric Expenditure: Ab Circle Versus Traditional Exercise Modalities, Maranda Rehg

Masters Theses

No abstract provided.

Post Exercise Massage: Effects On Next Day Performance Following Heavy Lower Body Resistance Training, Kristin Iehl

Honors Program Theses

The purpose of this study is to determine whether post-exercise massage improves next-day performance on an isometric peak force test after heavy lower body resistance training when compared to a placebo control of ultrasound at zero intensity. This was tested using students at the University of Northern Iowa who had been involved in a resistance training program over the past six months. The importance of this study is that if post-exercise massage improves recovery, even after a difficult resistance training day the athlete will still be able to perform at a high level so resistance training bouts can be more …

The Relative Age Effect In Junior College Baseball, Thomas C. Beals

Masters Theses

No abstract provided.

Influence Of Measurement Frequency On Rating Of Perceived Exertion During Sub-Maximal Treadmill Testing, Sue Stout

Masters Theses

No abstract provided.

Low Back Pain In Schoolgirl Rowers: Prevalence, Bio-Psycho-Social Factors And Prevention, Debra Perich

Theses: Doctorates and Masters

Rowing is one of the largest participant sports on the Independent Girls‟ Schools Sporting Association (IGSSA) in Western Australia with approximately 400 participants competing every year. Rowing is an extra-curricular sport offered to girls 14 years of age and above, with these girls competing and training in both sweep and scull boats. Whilst the benefits of regular physical activity and exercise are well known, musculoskeletal problems have been documented in rowing. In particular, clinical evidence and previous research suggests that low back pain (LBP) is common in rowers. Adolescents who suffer from LBP are at an increased risk of recurrent …