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Neuromuscular Factors Affecting Stretch-Induced Torque Loss, Gabriel Siqueira Trajano Dr 2014 Edith Cowan University

Neuromuscular Factors Affecting Stretch-Induced Torque Loss, Gabriel Siqueira Trajano Dr

Theses: Doctorates and Masters

The mechanisms underpinning the immediate torque loss induced by acute, static muscle stretching are still not clear. The current research was designed to examine the neuromuscular factors influencing this torque loss. In Study 1, the contributions of central versus peripheral factors to the stretch-induced torque loss were investigated. Measures of central drive, including the EMG amplitude normalised to the muscle compound action potential amplitude (EMG:M), percent voluntary activation (%VA) and first volitional wave amplitude (V:M), and measures of peripheral function, including the twitch peak torque and 20:80 Hz tetanic torque ratio were made before, and immediately and ...


Research Review: Exercise Can Be So Demanding, Michael Climstein, Joe Walsh 2014 Bond University

Research Review: Exercise Can Be So Demanding, Michael Climstein, Joe Walsh

Faculty of Health Sciences & Medicine Publications

It’s the last week of university and I’m preparing my last lecture for a colleague who is in Las Vegas at a strength and conditioning conference. Hmmph! Just not fair – and on top of sending an email from the poolside reminding me to give the lecture, he has the audacity to complain about the 40°C weather (did I mention it’s been single digits temperature here on the Gold Coast in the mornings?) Anyway, getting back on topic, I’m preparing his lecture on obesity and am including a number of slides on basal metabolic rate, resting ...


Comparison Of Two Different Sprint Interval Training Work-To-Rest Ratios On Acute Metabolic And Inflammatory Responses, CHRISTOPHER R. HARNISH 2014 Virginia Commonwealth University

Comparison Of Two Different Sprint Interval Training Work-To-Rest Ratios On Acute Metabolic And Inflammatory Responses, Christopher R. Harnish

Theses and Dissertations

High intensity exercise is believed to yield greater results on health and human performance than moderate intensity exercise. Extensive research indicates that not only do high-intensity interval training (HIT) and sprint interval training (SIT) produce significant improvements in cardiovascular fitness and disease, they may be more effective at improving long-term metabolic function, including insulin sensitivity (Si), by producing more mitochondria. Moreover, compliance rates for HIT and SIT participation are reported to be the same or better than traditional moderate intensity exercise. Because lack of time is often cited as major hindrance to exercise participation, SIT is also seen as a ...


Self-Efficacy, Self-Determination, And Self-Regulation: The Role Of The Fitness Professional In Social Change Agency, Joshua M. Garrin 2014 Walden University

Self-Efficacy, Self-Determination, And Self-Regulation: The Role Of The Fitness Professional In Social Change Agency, Joshua M. Garrin

The Journal of Social Change

Current epidemiological data reported by governing health authorities reveal the biopsychosocial complexity of health maintenance in the 21st century. As statistics reflect the insidious, worldwide impact of chronic disease and psychosocial stress, the medical domain continues to endorse multidisciplinary approaches to support the myriad systems that underpin health and well-being. With their scope of practice continually expanding to accommodate such needs, fitness professionals (FPs) have become a mainstay on the front lines of health behavior management in recent years. Beyond their role in facilitating physical health gains, contemporary FPs undertake the challenge of instilling health self-efficacy beliefs, reinforcing autonomy and ...


Perspectives Of Female Leaders In Athletic Training, Kyle Matthew Momsen 2014 Minnesota State University, Mankato

Perspectives Of Female Leaders In Athletic Training, Kyle Matthew Momsen

All Theses, Dissertations, and Other Capstone Projects

Previous research has found that women face barriers in athletic training and it appears that they are not represented in leadership positions in numbers equal to the demographics of athletic training. The purpose of this research was to explore the leadership experiences and perspectives of female athletic trainers who have earned a leadership position at the highest levels in athletic training. This qualitative investigation utilized semi-structured, open-ended interviews with 12 women that held national leadership positions in athletic training. The data from this investigation suggests that many of the barriers that previously faced women in athletic training have decreased or ...


Is There A Relationship Between Hip Structure, Hip Muscle Strength, And Lower Extremity Frontal Plane Kinematics During Treadmill Running?, Michael William Robinson Baggaley 2014 University of Kentucky

Is There A Relationship Between Hip Structure, Hip Muscle Strength, And Lower Extremity Frontal Plane Kinematics During Treadmill Running?, Michael William Robinson Baggaley

Theses and Dissertations--Kinesiology and Health Promotion

INTRODUCTION: Excessive hip adduction (HADD) has been associated with a number of lower extremity overuse injuries, and it has been suggested that it may be the result of reduced strength of the hip abduction musculature. Hip structure has been postulated to influence both hip abduction (HABD) strength and HADD. The purpose of this study was to investigate the relationship between hip structure, HABD strength, and frontal plane kinematics during running. METHODS: Peak isometric HABD strength, lower extremity kinematics, femoral neck-shaft angle (NSA), and pelvis width-femur length (pw-fl) ratio were recorded for 25 female subjects. Pearson correlations (P < .05) were performed between variables. RESULTS: A fair relationship was observed between femoral NSA and HABD strength (r = -.472 P ...


Effects Of Rest Intervals On Lower Extremity Kinematics And Coupling During The Star Excursion Balance Test, Yongung Kwon, Dorsey S. Williams 2014 Virginia Commonwealth University

Effects Of Rest Intervals On Lower Extremity Kinematics And Coupling During The Star Excursion Balance Test, Yongung Kwon, Dorsey S. Williams

Kinesiology and Health Sciences Publications

Meeting abstract From 4th Congress of the International Foot and Ankle Biomechanics (i-FAB) Community Busan, Korea. 8-11 April 2014


Head Impact Exposure In Male And Female Collegiate Ice Hockey Players, Bethany J. Wilcox, Jonathan G. Beckwith, Richard M. Greenwald, Jeffrey J. Chu, Thomas W. McAllister, Laura A. Flashman, Arthur C. Maerlender, Ann-Christine Duhaime, Joseph J. Crisco 2014 University of Nebraska - Lincoln

Head Impact Exposure In Male And Female Collegiate Ice Hockey Players, Bethany J. Wilcox, Jonathan G. Beckwith, Richard M. Greenwald, Jeffrey J. Chu, Thomas W. Mcallister, Laura A. Flashman, Arthur C. Maerlender, Ann-Christine Duhaime, Joseph J. Crisco

Faculty Publications, Department of Psychology

The purpose of this study was to quantify head impact exposure (frequency, location and magnitude of head impacts) for individual male and female collegiate ice hockey players and to investigate differences in exposure by sex, player position, session type, and team. Ninety-nine (41 male, 58 female) players were enrolled and 37,411 impacts were recorded over three seasons. Frequency of impacts varied significantly by sex (males: 287 per season, females: 170, p < 0.001) and helmet impact location (p < 0.001) but not by player position (p = 0.088). Head impact frequency also varied by session type; both male and female players sustained more impacts in games than in practices (p < 0.001), however the magnitude of impacts did not differ between session types. There was no difference in 95th percentile peak linear acceleration between sexes (males: 41.6 g, females: 40.8 g), but 95th percentile peak rotational acceleration and HITsp (a composite severity measure) were greater for males than females (4424, 3409 rad/s2, and 25.6, 22.3, respectively). Impacts to the back of the helmet resulted in the greatest 95th percentile peak linear accelerations for males (45.2 g) and females (50.4 g), while impacts to the side and back of the head were associated with the greatest 95th percentile peak rotational accelerations (males: 4719, 4256 rad/sec2, females: 3567, 3784 rad/sec2, respectively). It has been proposed that reducing an individual’s head impact exposure is a practical approach for reducing the risk ...


An Exploratory Examination Of Families Engaged In An Adventure Running Kids Program, Heather Isnor 2014 Wilfrid Laurier University

An Exploratory Examination Of Families Engaged In An Adventure Running Kids Program, Heather Isnor

Theses and Dissertations (Comprehensive)

Academics and practitioners have only just begun to delve into the health benefits of outdoor activities in the last few years. In general, the forested settings of these activities have been documented to decrease stress levels, increase recovery rates from disease, and lessen the symptoms of mental illnesses (Kuo & Faber Taylor, 2004). It is believed that the natural environment acts as a setting where humans can engage in physical activity, aesthetic experiences, and social interactions that, in turn, release stress and lead to improved well-being (Bird, 2012). Currently, however, children are experiencing limited exposure to nature and which has been ...


Identity Adaptation And The Potential For Psychological Growth Following Adversity For Injured Athletes, Alanna M. Riordan, Jill Tracey 2014 Wilfrid Laurier University

Identity Adaptation And The Potential For Psychological Growth Following Adversity For Injured Athletes, Alanna M. Riordan, Jill Tracey

Theses and Dissertations (Comprehensive)

The study was undertaken to gain a deeper understanding of the transition process out of competitive athletics experienced by competitive athletes after a career-limiting injury by examining three research questions: 1) What is the identity adaptation process of injured athletes? 2) To what extent, if any, do injured athletes experience growth following adversity? 3) What, if any, psychological skills are used in the injury/career transition processes? Nine former elite ath- letes were recruited through key informant sampling. There were three males and six females, with a mean age of 24.6 years. All participants sustained, at minimum, a season-ending ...


The Creation And Validation Of A Youth Fundamental Hitting Scale: The Assessment Of Youth Baseball And Softball Hitting Fundamentals And The Perceived Psychological Barriers To Hitting A Pitched Ball, Andrew Walsh 2014 Edith Cowan University

The Creation And Validation Of A Youth Fundamental Hitting Scale: The Assessment Of Youth Baseball And Softball Hitting Fundamentals And The Perceived Psychological Barriers To Hitting A Pitched Ball, Andrew Walsh

Theses: Doctorates and Masters

No abstract provided.


The Effect Of Stretching And Strengthening On Patellofemoral Pain Syndrome, Heather Hollinger 2014 Hamline University

The Effect Of Stretching And Strengthening On Patellofemoral Pain Syndrome, Heather Hollinger

Departmental Honors Projects

Although there is considerable research on stretches and strengthening exercises that could help improve function, pain, strength, and flexibility associated with the symptoms of patellofemoral pain, more research on how beneficial stretching and strengthening is compared to just stretching is needed. The purpose of this study was to determine the effectiveness of stretching and strengthening as compared to just stretching alone on flexibility, strength, function, and pain in participants with at least 50% of the symptoms and predispositions associated with patellofemoral pain. The design consisted of a control group that completed basic stretching, while the treatment group received stretching and ...


Injured Athletes' Preferences Regarding Source Of Emotional Support, Kristin Kutz 2014 Bowling Green State University

Injured Athletes' Preferences Regarding Source Of Emotional Support, Kristin Kutz

Honors Projects

Athletes often experience emotional distress as a result of an injury. Feelings of loss, decreased self-esteem, frustration, and anger are not uncommon. Athletic trainers (ATs) who work with injured athletes are focused on helping the progression of athletes' physical healing, but their role in helping athletes emotionally and psychologically is often unclear. There are twelve Athletic Training Education Competencies that the National Athletic Training Association requires to be taught to undergraduate AT students, one of them being psychosocial intervention and referral. However, little research has been done to define the exact role of ATs in this area, as well as ...


Testing The Health And Exercise Knowledge Of Bowling Green State University Students, Veronica Rasicci 2014 Bowling Green State University

Testing The Health And Exercise Knowledge Of Bowling Green State University Students, Veronica Rasicci

Honors Projects

Obesity has reached epidemic proportions and the problem is only continuing to grow (Flegal, 2006). Young adult college students are at a time in their lives where behaviors can more easily change than during other ages. They also are at a point in their lives where their current behaviors will influence the habits that they continue into later adulthood (Racette, Deusinger, Strube, & Highstein, 2012). Education is one way to promote healthy changes by college students. It is important to find out what knowledge of health and exercise college students already have. I developed a questionnaire with content-related validity and distributed ...


Understanding And Improving Pacing Strategies During Standard Distance Triathlons In Age Group Athletes, Sam Shi Xuan Wu 2014 Edith Cowan University

Understanding And Improving Pacing Strategies During Standard Distance Triathlons In Age Group Athletes, Sam Shi Xuan Wu

Theses: Doctorates and Masters

Pacing is an integral aspect of performance during all exercise, including multi-sport events such as triathlon. However, to date, the optimal pacing strategies to adopt over an entire triathlon, as well as during each specific discipline (i.e. swim, cycle and run), is not well understood. Therefore, the primary purpose of this thesis was to identify and understand current pacing strategies adopted by highly performing triathletes across different triathlon distances. This research aids in identifying pacing strategies that may improve overall performance during triathlon.

In the first study, the influence of sex and race distance on the age-related declines in ...


Relative Importance And Plasticity Of Anatomical And Neuromuscular Factors Affecting Joint Torque Production, Joanne C. Trezise 2014 Edith Cowan University

Relative Importance And Plasticity Of Anatomical And Neuromuscular Factors Affecting Joint Torque Production, Joanne C. Trezise

Theses: Doctorates and Masters

The present research aimed to determine (i) the relative influence anatomical and neuromuscular variables on maximal isometric, concentric and eccentric knee extensor torque (Study 1); (ii) whether the change in strength following a 10-week strength training program is associated with changes in specific anatomical and neuromuscular variables (Study 2a); (iii) whether anatomical and neuromuscular adaptations are dependent on their pre-training magnitudes; and (iv) whether it is possible to ‘predict’ an individual’s adaptation to strength training based on their anatomical and neuromuscular pre-training magnitudes (Study 2b).

The variables assessed throughout the studies include muscle cross-sectional area (CSA), fascicle length and ...


Acute Physiological Effects And Perceived Enjoyment Of A Single Bout Of Aerobic Interval And Continuous Moderate-Intensity Cycling In Overweight And Obese Individuals, Fujie Koh 2014 Edith Cowan University

Acute Physiological Effects And Perceived Enjoyment Of A Single Bout Of Aerobic Interval And Continuous Moderate-Intensity Cycling In Overweight And Obese Individuals, Fujie Koh

Theses: Doctorates and Masters

Aerobic interval training, a form of high intensity interval training, is commonly prescribed to both the general and clinical populations. However, the acute physiological effects from a single bout of aerobic interval session are not fully understood. In training studies, these acute physiological effects may confound actual training adaptations when they occur following the final training session [1]. Furthermore, while recreationally active men perceived aerobic interval training to be more enjoyable than continuous moderate-intensity exercise [2], the preference of overweight and obese individuals has not been extensively researched. Since overweight and obese individuals tend to have lower exercise tolerance, it ...


Modern Cavemen? Stereotypes And Reality Of The Ancestral Health Movement, David B. Schwartz, Hamilton M. Stapell 2013 Ancestral Health Society

Modern Cavemen? Stereotypes And Reality Of The Ancestral Health Movement, David B. Schwartz, Hamilton M. Stapell

Journal of Evolution and Health

Both academic and popular interest in the ancestral health movement, or “paleo” lifestyle, has grown rapidly in recent years. More people than ever are joining the movement, and more books and articles are being published on the topic. Media coverage and certain societal preconceptions of the movement have also increased. More often than not, followers of a paleo lifestyle are thought to be “modern cavemen”: athletic, single, meat-eating, young, white, and male. To test whether or not these stereotypes are true, the authors of the present study created the first large, academic survey (N = 3,967) of the ancestral health ...


Protect Your Health On A Sport Travel Tour, Franki Burke 2013 SelectedWorks

Protect Your Health On A Sport Travel Tour, Franki Burke

Franki Burke

No abstract provided.


The Effect Of Pacing Strategies On Oxygen Kinetics And Muscle Hemoglobin Status And Energy System Contribution In A 6 Min Exercise Performance, John D. Murray 2013 Western University

The Effect Of Pacing Strategies On Oxygen Kinetics And Muscle Hemoglobin Status And Energy System Contribution In A 6 Min Exercise Performance, John D. Murray

University of Western Ontario - Electronic Thesis and Dissertation Repository

ABSTRACT

The purpose of this study was to compare the effects of two different pacing strategies during a 6 min exercise performance on average power output, VO2 kinetics, deoxygenation in the vastus lateralis muscle, energy system contribution, average power output and blood lactate concentration. Eight young, healthy, male subjects (age 24 ± 3) completed two 6 min pacing strategies on a cycle ergometer; one bout was paced at a calculated fatigue threshold (FT) and the other began with a 12 s sprint and was paced 5 % below FT pace (5%2, work rate, anaerobic energy system contribution and energy consumption ...


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