Medicine and Health Sciences Commons^™

Biomechanical Differences Of Two Common Football Movement Tasks In Studded And Non-Studded Shoe Conditions On Infilled Synthetic Turf, Elizabeth Anne Brock

Masters Theses

The purpose of this study was to examine kinematic and kinetic differences in three shoe conditions (traditional football shoes with natural and synthetic turf studs and a neutral running shoe) during two common football movements (a 180° cut and a land-cut movement) on infilled synthetic turf. Fourteen recreational male football players performed five trials in all three shoe conditions for a 180° cut as well as a land-cut maneuver. The kinematic and kinetic variables were analyzed with a 3 x 2 (shoe x movement) repeated measures analysis of variance (ANOVA, p<0.05). Peak free moment was significantly greater for the land-cut trials (p<0.001). Vertical GRFs were significantly greater for the land-cut trials (p<0.001). A cleat x movement interaction was seen for time to vertical impact GRF (p=0.048). A cleat main effect was found for time to vertical impact between natural turf cleat and synthetic turf cleat (p=0.019). Vertical loading rate was significantly greater in land-cut trials. Peak medial GRFs showed a significant cleat x movement interaction (p=0.002). The results from this study suggest that land-cut movement elicit greater vertical GRF and vertical impact loadings rates. The running shoe had significantly less dorsiflexion range of motion (ROM) than the synthetic turf studs. A significant cleat main effect was found for peak eversion velocity (p=0.005). Post hoc comparisons showed that it was significantly smaller in shoe than that natural turf stud (p=0.016) and synthetic turf stud (p=0.002). In general, there was a lack of differences between the shoe conditions for GRFs and kinematic variables. For the 180° cut movement, natural turf studs produced lowest peak medial GRF compared to the synthetic turf studs and the shoe. The results from this study suggest that land-cut movement elicit greater vertical GRF and vertical impact loadings rates. In general, there was a lack of differences of GRFs and kinematic variables between the shoe conditions. For the 180° cut movement, natural turf studs produced lowest peak medial GRF compared to the synthetic turf studs and the shoe. Overall, increased GRFs, especially in combination with rapid change of direction and deceleration may increase the chance of injury.

Helmet Use Among Outdoor Recreational Rock Climbers Across Disciplines: Factors Of Use And Non-Use., Kevin Henri Hogan Soleil

Masters Theses

The use of helmets in outdoor recreational rock climbing is a risk management practice meant to offer some protection to climbers in the event of falls and falling objects. Helmets are used inconsistently across many disciplines of rock climbing including top-rope, sport lead, traditional lead and belay. Though climbing accidents involving head injuries are rare, many tend to be severe. The purpose of this study was to assess the rate at which helmets are being used, discover the most significant personal and environmental factors that influence use and non-use and differences between disciplines. The study surveys (N = 1481) …

A Description Of The Movement Of The Canine Pelvic Limb In Three Dimensions Using An Inverse Dynamics Method, And A Comparison Of Two Techniques To Surgically Repair A Cranial Cruciate Ligament Deficient Stifle, Jason Headrick

Doctoral Dissertations

The purposes of the dissertation were: 1) to describe three-dimensional (3D) motion of the canine pelvic limb using an inverse dynamics method, and 2) to compare these motion patterns between normal, healthy dogs and those that have had their stifles stabilized by one of two surgical methods approximately five years earlier.

Twenty-five dogs were allocated to three groups; healthy control dogs, dogs that had received the tibial plateau leveling osteotomy (TPLO), and dogs that had received the lateral fabellar suture (LFS) stabilization technique. Both surgical techniques were performed approximately five years prior on stifles with surgically induced cranial cruciate ligament …

“It Was Fight Or Flight...And Flight Was Not An Option”: An Existential Phenomenological Investigation Of Military Service Members’ Experience Of Hand-To-Hand Combat, Peter Richard Jensen

Doctoral Dissertations

Hand-to-hand combat is one of the more psychologically challenging performance environments for those in the military (Grossman, 1995). Even with the technological advances of modern warfare military leaders still believe hand-to-hand combat is an important and relevant challenge for service members (Blanton, 2007; Clark, 2009; Collins, 2007; Wojdakowski, 2007; Wood & Micaelson, 2000). Despite its importance, the hand-to-hand combat experience has, to date, attracted very little research attention. Therefore, the purpose of this study was to explore military service members’ experiences of hand-to-hand combat. To accomplish this objective, phenomenological interviews were conducted with 17 male military service members. Each participant …

"Just Trying To Keep My Head Above Water": Division I Freshman Female Athletes' Experience Of Their First Semester, Aslynn C. Halvorson

Chancellor’s Honors Program Projects

No abstract provided.

Using Sport To Build Community: Service-Learning With Iraqi Refugees, Ashleigh Morgan Huffman

Doctoral Dissertations

The purpose of this study was to explore the connections between Sport for Development and Peace (SDP), service-learning, and community-university partnerships through the implementation of the Service-Learning: Sport and Community Development (SCD) class. It was my hope that this research would produce a usable model, a framework for other scholars and practitioners interested in developing community-university partnerships. I wanted this project to not only answer the “why” questions for SDP and service-learning, but also the “how” questions – specifically, how to create a reflexive and collaborative partnership that balances the needs of the community and university. I wanted to create …

Physical Activity Assessment In Wheelchair Users, Scott Alexander Conger

Doctoral Dissertations

Purpose: To examine the relationship between hand rim propulsion power and energy expenditure during wheelchair locomotion. Methods: Fourteen individuals who used manual wheelchairs were included in this study. Each participant performed five different locomotion activities in a wheelchair with a PowerTap hub built into the rear wheel. The activities included wheeling on a level surface that elicited a low rolling resistance at three different speeds (4.5, 5.5, and 6.5 km∙hr^-1), wheeling on a rubberized 400m track that elicited a higher rolling resistance at one speed (5.5 km∙hr^-1), and wheeling on a sidewalk course that included uphill …

“Learning The Hard Way”: An Examination Of Acculturative Support For Latin-American Baseball Players In The South Atlantic League, Lauren Melanie Osmer

Masters Theses

Latin-Americans have become major contributors in Major League Baseball, but face many challenges acculturating to living and playing in the United States. This research examined the acculturative support provided to Latin-American players by teams in the South Atlantic League of Minor League Baseball and whether or not people involved think that support was effective. Semi-structured interviews were conducted with front-office members and Latin-American former players, and transcriptions were analyzed for emerging themes using QDA Miner content analysis software. Three main themes emerged from the interviews: the language barrier, interaction between Latin-American and Anglo-American teammates, and the youth of Latin-American prospects. …

“It Can Start From Anything”: An Existential Phenomenological Investigation Of Athletes’ Experiences Of Psychological Momentum, Greg Young

Doctoral Dissertations

Psychological Momentum (PM) is a commonly recognized phenomenon in sport, yet remains one of the least understood (Taylor & Demick, 1994). Previous research examined PM using archival data (Gayton & Very, 1993; Gilovich, Vallone, & Tversky, 1985; Koehler & Conley, 2003; Silva, Hardy, & Crace, 1988), hypothetical and contrived scenarios (Eisler & Spink, 1998; Miller & Weinberg, 1991; Perreault, Vallerand, Montgomery, & Provencher, 1998; Vallerand, Colavecchio, & Pelletier, 1988), and actual performance (Mack, et al., 2008). More recently, Jones and Harwood (2008) used semi-structured interviews to examine participants’ …

Kenshi’S Experiences Of Kendo: A Phenomenological Investigation, Takahiro Sato

Doctoral Dissertations

The aim of this study was to extend existing literature on the martial arts by examining the experience of kendo (Japanese fencing) participants. In-depth, existential phenomenological interviews were conducted with nine (eight males and one female) currently competitive kendo practitioners (i.e., kenshi), ranging in age from 19 to 40 years. All participants were of Japanese descent but resided in the United States at the time of the interviews. Thematic analysis of the transcripts revealed several prominent aspects of the lives and performance experiences of kenshi. The most important finding was the relatively equal emphasis participants placed on the mastery …

"It's All About The Kids”: A Phenomenological Study Of The Experiences Of Special Needs Cheerleading Coaches, Kimberly Nichole Page

Masters Theses

p { margin-bottom: 0.08in; }a:link { color: rgb(0, 0, 255); Special needs sport literature is narrow-focused and generally focuses on the different disabilities of athletes (Howe & Jones, 2006). Additionally, cheerleading is generally researched in terms of disordered eating and body image (Thompson & Digsby, 2004), high injury risk (Jacobson, Hubbard & Redus, 2004; Jacobson, Redus, & Palmer, 2005), and over-sexualization of youth (Adams & Bettis, 2003). While several websites and resources for coaches of special needs athletes provide information for how a coach should feel, there is a lack of empirical research to support these claims (www.specialolympics.org; …

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 …

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 …

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 …

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 …

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 …

The Impact Of Met-Expectation Of Organizational Justice On Attitudinal And Behavioral Outcomes Of Intercollegiate Athletics Coaches, Seungmo Kim

Doctoral Dissertations

The purposes of this study were to examine coaches’ perceptions of distributive, procedural, and interactional justice regarding current resource distribution systems in intercollegiate athletics in terms of sport types (high profile sports vs. low profile sports) and gender of players (male participant sports vs. female participant sports) and the impacts of direct or indirect organizational justice on coaches’ attitudinal (job satisfaction and affective organizational commitment toward organization and supervisor) and behavioral (organizational citizenship behavior for organization and supervisor) outcomes through the mediating effects of met expectations, outcome satisfaction, and social exchange relationships (perceived organizational support and leader-member exchange) via a …

Parents’ Perceptions Of Their Children’S And Their Own Sport Experiences, Michael John Diacin

Doctoral Dissertations

Sport participation is a significant aspect in many people’s lives. The experiences they accumulate in sport are shaped by a variety of factors. A combination of personal factors (e.g., demographics), social factors (e.g., socializing sources and the support they provide), and structural factors (e.g., costs and accessible programs) uniquely shape each individual’s experience. Since a variety of factors can shape that experience, it is useful to examine perceptions of the factors were significant in the creation of an individual’s participation opportunities and experiences in sport.

The purpose of this study was threefold: (a) to gain insight into the personal, social, …

In That Instant It Was Over: The Athlete's Experience Of A Career-Ending Injury, Lauren Aline Loberg

Doctoral Dissertations

A career-ending injury is an event that causes the involuntary termination of an athlete‟s participation in his or her chosen sport. Over the last decade, research has focused on injury and career transition; however little was known about athletes‟ experience of career-ending injury. The purpose of this study was to obtain in-depth descriptions of the lived experience of athletes who have had a career-ending injury. Using an existential phenomenological approach, the focus of the study was on the athletes‟ own perceptions of this experience.

The participants were thirteen male and female former athletes representing a number of different sports. Using …

Racial And Sexual Discrimination Occurring To Korean Players On The Lpga Tour, Seung-Yup Lim

Doctoral Dissertations

The purpose of this study was to explore the experiences of Korean players on the LPGA Tour regarding issues of social justice. More specifically, this study examined how Korean players perceived their experiences of race and gender during their athletic careers in the U. S.

The participants of the study were 11 Korean professional golfers who were enrolled as members of the LPGA in 2007. The qualitative methodology of interviewing was employed which consisted of semi-structured questions within cultural studies and feminist standpoint theory. Six semi-structured face-to-face interviews were conducted: three group and three individual interviews. After data collection was …

The Effects Of A Pedometer Intervention On The Physical Activity Patterns Of Cardiac Rehabilitation Participants, Michael Shipe

Doctoral Dissertations

Purpose: To assess whether the provision of a pedometer and exercise diary could significantly increase the activity levels of phase II cardiac rehabilitation program patients on the days they did not attend the program. Methods: Seventy patients (53 males, 17 females, age of 68 plus/minus 9 yrs, BMI 29.0 plus/minus 6.1 kg/m² participated in the study. During their first visit to a phase II CRP, patients were assigned to one of two groups. Control patients were given a blinded pedometer (n = 34), while experimental subjects received a pedometer that they could view (n = 36) as well as …

An Examination Of The Deliberate Practice Framework In Quad Rugby, Rachel Lynn Boxell

Masters Theses

Ericsson, Krampe, and Tesch-Römer (1993) forwarded a general framework to account for the characteristics and developmental experiences of individuals who have acquired exceptional performance in any domain. This framework proposed that experts undergo an extensive acquisition period involving the accumulation of thousands of hours of deliberate practice while overcoming various constraints that serve as functional barriers to the achievement of expertise. The purpose of this study was to examine expert disability-sport athletes to determine how well their experiences and characteristics were captured by Ericsson et al.’s (1993) framework. In Part I, quad rugby players recalled the amount of time spent …

Self-Controlled Feedback And Activity Level In Learning A Simple Movement Skill, Tim Van Nguyen

Masters Theses

The purpose of this study was to determine if active and sedentary individuals differed in terms the effects of self-controlled feedback on the learning of a movement skill. The task consisted of a blindfolded beanbag toss using the non-preferred arm. Participants were prescreened according to their physical activity level using the International Physical Activity Questionnaire (Craig et al., 2003). An equal number of active (A) and sedentary (S) participants were assigned to self-control (SC) and yoked (Y) feedback conditions, creating four groups: Self-Control Active; Self-Control Sedentary; Yoked Active; and Yoked Sedentary. SC condition participants were provided feedback whenever they requested …

For We See And Know In Part: An Examination Of The Portrayal Of African-American Female Athletes On The Covers Of Sports Illustrated, Chanel Leisa Lattimer

Masters Theses

This study examines the print media’s representation of African-American sportswomen’s femininity on the covers of Sport Illustrated. Sport is considered a male-dominated institution; a place where masculinity is expressed. Therefore, in spite of the increased participation for women in sport due to Title IX; the media’s coverage has been minimal and their representation of female athletes has been ambivalent at best, and trivializing at worse. The conveyance of African-American female athletes remains even more complex. Due to historical experiences, African-American women have developed a femininity that falls outside that of mainstream society. Therefore, the lack of coverage African-American female …

‘Balancing Acts’: A Qualitative Investigation Of Division I Football Players’ Roles Of Student And Athlete, Patricia Y. Jones

Masters Theses

The purpose of this study was to examine African-American Division I football players’ perceptions of their ability to balance their roles as “students” and “athletes”. Three major questions were addressed: Can student-athletes balance both the roles of “student” and “athlete”? If so, how are they able to do so? And, are they truly successful at it? Semi-structured interviews were undertaken with eight African-American football players at a Division I university. Six themes emerged which included: (a) parental emphasis on education and sport; (b) “childhood dreams” versus sport realities; (c) reality check; (d) perceptions of student-athletes; (e) pressure to become a …

Force-Velocity Characteristics Of The Leg Muscles And Anaerobic Performance In African-American And Caucasian College-Aged Males, Stacy D. Hunter

Masters Theses

PURPOSE: To compare vertical jump height and power and sprint time in African- American and Caucasian college-aged males, to compare isokinetic knee extension and flexion torques between the two groups, and to examine correlations between these variables. METHODS: The participants were fifty recreationally active, college-aged males (23 African-American and 27 Caucasian). Physical activity was assessed using the Behavioral Risk Factor Surveillance Survey (BRFSS) Physical Activity module, body composition was determined using the Bod Pod, and anthropometric measures (height, weight, and thigh circumference) were taken. Subjects performed a 100-m sprint on an outdoor track and a countermovement vertical jump. Vertical jump …

Physical Activity And Social Support For Exercise In A Sample Of College Sorority And Fraternity Members, Jennifer Autumn Minton

Masters Theses

PURPOSE: To provide 1) a description of the levels of physical activity and social support for exercise for fraternity and sorority members; 2) a comparison of gender differences in physical activity levels among fraternity and sorority members; and 3) to determine a relationship between levels social support for exercise and physical activity in fraternity and sorority members. METHODS: Three hundred thirty-seven members of fraternities and sororities completed an online survey (74.8% female). The online survey included the International Physical Activity Questionnaire (IPAQ), the Social Support for Exercise Survey, and demographic questions. RESULTS: According to the IPAQ, the …

Anticipation Timing As A Function Of Expertise And Effector-Specific Training, Greg Young

Masters Theses

Ericsson, Krampe, and Tesch-Römer (1993) suggested that 10,000 hours of deliberate practice is needed to attain expertise. Consequently, it would be expected that expert soccer players who possess a high level of proficiency in intercepting a ball with their feet would demonstrate superior anticipation timing performance with the feet compared to novices who lack training. On the other hand, Keele, Ivry, and Porkorny (1987), and Studenka and Zelaznik (2008) provided support for a centrally controlled process for timed movements. If true, it would be expected that experts’ anticipation timing performance would be superior to novices’ regardless of the effector used. …

The Dose-Response Association Of Physical Activity And The Metabolic Syndrome Among U.S. Adults: Nhanes 1999-2004, James R. Churilla

Doctoral Dissertations

The purpose of this study was to evaluate the current prevalence of the metabolic syndrome with an emphasis on examining the relationship between leisure time physical activity (LTPA) and the metabolic syndrome in a nationally representative sample of the United States (U.S.) adult population within the 1999-2004 National Health and Nutrition Examination Survey (NHANES). The sample for this study included adults (N=5620), 20 years and older, who attended a mobile examination center (MEC) examination in the NHANES 1999-2004. The American Heart Association and National Heart, Lung, and Blood Institute (AHA/NHLBI) AHA/NHLBI definition was used to define the metabolic syndrome based …