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Rozprawy doktorskie na temat „Exercise Science”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 25 lipca 2025

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1

Jolley, Daniel. "Misconceptions and Critical Thinking Ability In Undergraduate Exercise Science Students, Vocational Fitness Students, and Exercise Professionals." Thesis, Curtin University, 2019. http://hdl.handle.net/20.500.11937/76905.

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This research is the first known cross-sectional and longitudinal investigation of misconceptions and critical thinking in exercise science and fitness students and professionals. Misconceptions were higher in students than degree-qualified professionals, though there was no difference between vocational graduates and vocationally-qualified personal trainers. An online, content-specific critical thinking course was effective in reducing misconceptions and improving critical thinking ability in professionals. Critical thinking appears to be more important than specific knowledge in reducing mi

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2

Bush, Jeremiah G. "Post-Exercise Hypotension in Brief Exercise." TopSCHOLAR®, 2011. http://digitalcommons.wku.edu/theses/1072.

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The purpose of this investigation was to examine whether a single 10 minute bout of exercise, performed at multiple intervals throughout the day to equal 30 minutes, can effectively elicit post-exercise hypotension (PEH). Secondly, it is important to explore whether a light (40% VO2R) or moderate (70% VO2R) intensity is required to elicit PEH within 10 minutes. Subjects (N=11) completed a VO2max test utilizing the Bruce Treadmill protocol. Each subject returned within 3 – 5 days to complete two separate exercising trials. A counter balanced system was employed so that each subject did not perf

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3

Aguilera, Lorri Castro. "Exercise and dietary habits of high school, health science students." CSUSB ScholarWorks, 1995. https://scholarworks.lib.csusb.edu/etd-project/997.

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Nelson, William Bradley. "Exercise Induced Hypervolemia: Role of Exercise Mode." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd2128.pdf.

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5

Stone, Michael H. "What is Sport Science?" Digital Commons @ East Tennessee State University, 2009. https://dc.etsu.edu/etsu-works/4578.

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Stone, Michael H. "What Is Sport Science." Digital Commons @ East Tennessee State University, 2010. https://dc.etsu.edu/etsu-works/4536.

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7

Stone, Michael H. "What Is Sport Science?" Digital Commons @ East Tennessee State University, 2011. https://dc.etsu.edu/etsu-works/4543.

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8

Walshe, Ian. "The effect of manipulating the IL-6 response to exercise on biomarkers and exercise performance." Thesis, Northumbria University, 2012. http://nrl.northumbria.ac.uk/10131/.

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Interleukin-6 (IL-6) is a pluripotent cytokine which has inflammatory properties. It is suggested to mediate a variety of processes including increased perception of fatigue during inflammatory states. In addition, prolonged exercise can cause a marked increase in circulating IL-6, and although there is a widely reported association between plasma IL-6 and fatigue in disease and inflammatory conditions, this relationship has remained relatively unexplored in healthy individuals during exercise. Therefore, the aims of this thesis were firstly, to develop a repeatable preload time trial in order

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9

Jin, Wei-Hua. "Improving the environmental situation in China : an exercise in social science." Thesis, University of Lincoln, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.393069.

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10

Richardson, Laura A. Ph D. "Weightism: An Exploration of University Exercise Science Students' Views of Obesity." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1460644039.

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11

Gibbon, Karl. "Lumbopelvic muscle function during low impact weight-bearing exercise : development of the functional re-adaptive exercise device." Thesis, Northumbria University, 2017. http://nrl.northumbria.ac.uk/32567/.

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The aim of this thesis was to develop our understanding of the Functional Re-adaptive Exercise Device (FRED): a novel prototype exercise device proposed to facilitate the activation the deep paraspinal and anterolateral abdominal wall musculature in a manner consistent with the requirements of motor control training in people with low back pain. Firstly, the intra- and interday reliability and precision of measurement of ultrasound imaging of the lumbar multifidus (LM) and transversus abdominis (TrA) were established. LM and TrA demonstrated good (ICC ≥ 0.75) to excellent (ICC ≥ 0.9) intrarate

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12

Sieracki, Joseph R. "RELATIONSHIPS BETWEEN DIET, EXERCISE, AND LEARNING IN THE REGULAR SCIENCE CLASSROOM SETTING." Cleveland State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=csu1401190547.

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13

Mahn, Nathan A. (Nathan Aaron) 1979. "A new 6.111 laboratory exercise : Mastermind." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/87427.

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Thesis (M.Eng. and S.B.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2003.<br>Includes bibliographical references (leaf 55).<br>by Nathan A. Mahn.<br>M.Eng.and S.B.

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14

Mullineaux, David Ross. "Issues in the application of statistical techniques in sport and exercise science." Thesis, Sheffield Hallam University, 2002. http://shura.shu.ac.uk/20766/.

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The aim of this research is to demonstrate the benefits and limitations of selected techniques used to analyse data derived from , sport and exercise science research. Although statistical techniques are easy to access through software packages, supporting literature about their appropriate application is less common. Many researchers are unaware of the full benefits or potential pitfalls when using these techniques. An understanding of the appropriate use of statistics will benefit the researcher by maximising the potential for analysing, interpreting and applying data correctly. Furthermore,

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15

Sulzer, Nicole Uschi. "Exercise associated muscle cramping : investigating a novel hypothesis." Master's thesis, University of Cape Town, 2003. http://hdl.handle.net/11427/26321.

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This thesis on Exercise Associated Muscle Cramping (EAMC) comprised three individual studies. The aims of this series of investigations were firstly to investigate the nature and prevalence of EAMC in a group of lronman triathletes with a past history of EAMC, secondly to compare the serum electrolyte concentrations in cramping and control Ironman triathletes as well as to record the baseline electromyography (EMG) of cramping lronman triathletes during recovery and thirdly to compare the EMG activity of cramping and control runners before, during and after a fatiguing bout of exercise.

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16

Nelson, Mara Hendricks. "A pilot study to examine a therapeutic exercise intervention on fibromyalgia symptoms." BYU ScholarsArchive, 2006. https://scholarsarchive.byu.edu/etd/398.

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Objective. To examine the feasibility of a home-based, video therapeutic exercise program on pain, fatigue, self-efficacy, and health status in fibromyalgia patients. Methods. Nine individuals who were previously diagnosed with fibromyalgia completed the study (out of an initial pool of 31). Subjects were randomly assigned to one of two groups: a group who received a home-based therapeutic exercise video and a control group who continued to undergo their current standard of care or "treatment-as-usual." The video group was instructed to conduct the exercises as prescribed in the 42-minute vid

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17

Littrell, Ashley. "The Relationship Between Body Image and Exercise Type." Digital Commons @ East Tennessee State University, 2017. https://dc.etsu.edu/honors/366.

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Exercise can have very beneficial effects on health and body satisfaction, but sometimes a negative body image gets in the way of exercising. Modern society holds certain beauty ideals in high regard, and these standards are often unattainable and unrealistic. These outside pressures to look a certain way can have a very negative effect on an individual’s body image, or the way that a person perceives his or her own appearance. There have been many studies done that have attempted to define the relationship between body image with exercise behaviors (Burger and Diony 2002, Hall and Pearson 201

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18

Van, Breda Keelyn. "The influence of methylphenidate on heart rate and brain connectivity." Doctoral thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/27818.

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The central governor model (CGM) proposes that muscle recruitment is regulated by the brain through subconscious homeostatic control of afferent feedback. It has been suggested that the dopaminergic system plays a key role in the CGM, with dopaminergic activation leading to lower fatigue thresholds. Key neural circuits, including the central autonomic network (CAN), may also play a role in altering thresholds by reducing conscious bodily awareness, known as interoception. However, few studies have directly examined the dopaminergic neurotransmitter system and CAN connectivity, during exercise-

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19

Wulfsohn, Jason. "The agreement, reliability and accuracy of a subjective-rating for technique measurement in rugby union after video-based training." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29227.

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Background: Rugby union is a high-intensity, intermittent sport, characterised by numerous contact events, such as rucks, mauls, scrums, and tackles. Specifically, the tackle is the most common action to occur during a rugby game. Subsequently, the tackle (tackler and ballcarrier) is responsible for the highest number of total injuries during a season. The most effective tackle technique is associated with a lower risk of injury than poorly executed tackles. Considering the prevalence of tackles, their propensity to cause injury, and the link between safety and proper tackle technique, a tool

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20

Hume, David John. "Mind the gap: brain-behaviour barriers to successful weight loss maintenance." Doctoral thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/20254.

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The primary objectives of this dissertation were to investigate the behavioural and neurophysiological factors related to overweight and obesity, as well as to weight loss maintenance versus weight relapse in a purposively sampled group of healthy South African women. The battery of investigations was designed to explore two central hypotheses: First, weight loss induces several behavioural compensations related to habitual eating behaviour and daily physical activity (PA) practices which facilitate the generation of a chronic positive energy balance, thereby increasing the risk of weight rega

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21

Taliep, Mogammad Sharhidd. "An investigation into the kinematic, cortical electrical and visual search strategies of skilled and less-skilled cricket batsmen in response to projected video footage of a medium-fast bowler." Doctoral thesis, University of Cape Town, 2008. http://hdl.handle.net/11427/2768.

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Includes abstract.<br>Includes bibliographical references (p. [212]-228).<br>The aim of this dissertation was to investigate various systems affecting performance in skilled and less-skilled batsmen. These systems included kinetics, visual perception, psychophysiology and visual tracking. Individual chapter abstracts have been presented because of the multifaceted nature of this dissertation.

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22

Azevedo, Liane. "Risk factors for Achilles tendinopathy in runners - an investigation of selected intrinsic, kinematic, kinetic and muscle activity factors that are associated with Achilles tendinopathy." Doctoral thesis, University of Cape Town, 2008. http://hdl.handle.net/11427/2772.

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The overarching purpose of this study was to investigate the multifactorial aetiology of Achilles tendinopathy. Variables such as training and injury history, lower limb alignment, running biomechanics and movement variability were investigated. This study also aims to understand how different sensory inputs, such as shoe or pain may affect biomechanics. Thirty four uninjured runners (UN) and twenty one runners with Achilles tendinopathy (AT) composed the population sample for this study. Questionnaire and lower limb measurements were used to investigate the multifactorial aetiology of the inj

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23

Runciman, Phoebe Anne. "Performance and fatigue charateristics of paralympic athletes with cerebral palsy." Doctoral thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/20269.

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Includes bibliographical references<br>The studies described in this thesis were the first to investigate in - depth body composition, exercise performance and neuromuscular characteristics of elite Paralympic athletes with cerebral palsy (CP). In the first study, in - depth whole body and site specific body composition was investigated in six athletes with CP using dual - energy x - ray absorptiometry. There were no differences between non - affected and affected sides with respect to bone mineral density and fat mass. Fat free soft tissue mass was lower on the affected side in bot h upper a

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24

O’Connell, Kevin Sean. "Investigation of selected collagen genes in exercise-related musculoskeletal soft tissue phenotypes." Doctoral thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/12960.

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Includes bibliographical references.<br>Previous findings have suggested that functional variants within collagen encoding genes are associated with several musculoskeletal soft tissue injuries and other exercise-related phenotypes. Specifically variants within the functional COL5A1 3’- untranslated region (UTR) have previously been associated with (1) chronic Achilles tendinopathy, (2) Anterior Cruciate Ligament (ACL) ruptures in females, (3) endurance running performance and (4) range of motion (ROM). Since this gene encodes for an important structural component of the collagen fibril it has

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25

Dove, Mary Ann. "Socio-ecological factors in talent development in cricketers in a diverse society." Doctoral thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29800.

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Introduction: In recent years, there has been a move to understand the environment and context in which athletes develop. South Africa’s unique context provides an opportunity to understand how environmental factors could influence talent development in cricket. Since democracy, there has been limited representation of Black African cricketers at the elite levels in South Africa. Therefore, the aim of this thesis was to determine the role that socio-ecological factors may play in the development of cricket talent in a diverse society. Methods: Qualitative research methods were used to explore

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26

Tam, Nicholas. "Towards an improved understanding of the biomechanical implications and risk of injury of barefoot running." Doctoral thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/12998.

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Includes bibliographical references.<br>Barefoot running is a subject of significant interest, both in scientific publications and in the lay media as a result of its alleged benefits for runners. These benefits include the potential to reduce injury risk, more economical running and broadly speaking, a better understanding of running biomechanics. Although there are numerous scientific publications describing differences between barefoot and shod running, there is a dearth in understanding whether all runners are able to adapt to the proposed benefits and how this may affect long-term injury

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27

Noakes, Timothy. "Collected studies." Doctoral thesis, University of Cape Town, 2002. http://hdl.handle.net/11427/13969.

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Huchu, Linet. "The association between cardiorespiratory fitness and performance in a submaximal stepping test standardised for external workload." Doctoral thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/22962.

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Submaximal step tests are used to predict maximal oxygen consumption and work capacity. However, if the external workload is not controlled the interpretation of the test results may be inaccurate. The purpose of the research was to develop a submaximal test of cardiorespiratory fitness using a novel step test designed specifically to overcome the weaknesses of the previously published step tests. A series of studies contributed to the theoretical development of the submaximal step protocol, piloting the protocol, reliability studies, validation of the protocol and finally a cross-validation o

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Noorbhai, Mohammed Habib. "The batting backlift technique in cricket." Doctoral thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/24908.

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The batting technique in cricket consists of various elements such as the grip, stance, backlift, downswing, impact with the ball and follow through. Whilst there has been an extensive amount of research into these batting elements, there is little research specifically on the backlift technique. Therefore, we aimed to investigate and provide a scientific understanding of the batting backlift technique (BBT) in cricket. We aimed to investigate the BBT of the most successful batsmen (n = 65) in the last 120 years as well as players in the Indian Premier League (IPL) (n = 30). It was found that

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Smith, James Antony Harris. "Exercise-induced protection against insulin resistance and type 11 diabetes : the role of calcium." Doctoral thesis, University of Cape Town, 2008. http://hdl.handle.net/11427/2767.

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Includes abstract.<br>Includes bibliographical references (p. 89-106).<br>Regular exercise protects individuals against developing insulin resistance and type II diabetes. This effect of exercise does not appear to be due to an improvement in the insulin signalling pathway but instead due to an increase in the content of the insulin-regulatable glucose transporter (GLUT4) in skeletal muscle (84). Understanding the mechanisms by which exercise increases GLUT4 levels in skeletal muscle may reveal targets for pharmaceuticals to treat insulin resistance and type II diabetes. Although in vitro bind

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Burgess, Theresa Lee. "Cardiorespiratory, kinematic, neuromuscular and metabolic characteristics during the recovery period after an ultramarathon race." Doctoral thesis, University of Cape Town, 2009. http://hdl.handle.net/11427/2746.

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Includes abstract.<br>Includes bibliographical references (p. 325-399).<br>The aim of this study was to investigate the effects of exercise-induced muscle damage caused by a 90 km ultramarathon on submaximal oxygen consumption and stride length. The experimental group consisted of 11 male runners (39.7 ± 9.3 years) competing in a 90 km ultramarathon. Ten male runners (41.0 ± 10.8 years) who did not run the 90 km ultramarathon formed the control group. Maximum oxygen consumption and peak treadmill running speed were measured two weeks before the ultramarathon. Daily measurements of muscle pain

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32

Feldmann, Daneil. "Inactivity and overfeeding related changes in skeletal muscle composition and metabolism in captive felids - are they at risk of developing metabolic syndrome?" Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/24478.

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Obesity and physical inactivity are established key risk factors in the development of skeletal muscle insulin-resistance and type II diabetes in human and domestic animal populations. Wild animals are similarly exposed to these risk factors as a result of captivity. This study aimed at describing the skeletal muscle properties of captive lions (Panthera leo) who present with obesity and are physically inactive, with a group of free roaming wild lions. Skeletal muscle biopsies were collected from the Triceps brachii and analysed for fibre type composition, fibre size, and maximum oxidative (ci

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Schabort, Elske Jeanne. "The reliability of laboratory performance testing." Master's thesis, University of Cape Town, 1997. http://hdl.handle.net/11427/26671.

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The reproducibility of a measurement in a laboratory test impacts on the power of that test to detect the small, but significant changes in an athlete's performance when determining the influence of a new training or nutritional intervention. Until recently, however, sport scientists have not been concerned with establishing the reliability of many of their testing protocols. Therefore, the purpose of this thesis was to examine the reliability of several laboratory tests of performance and to determine those factors which may impact on the reproducibility of those tests. Possible factors that

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34

Pienaar, Paula Roxana. "Microvascular endothelial function in a multi-ethnic group of apparently healthy South African men and women: Implications for testing and the relationship between insulin resistance and microvascular reactivity." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/13967.

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Endothelial dysfunction is associated with cardiovascular disease risk factors and precedes structural changes in the blood vessels that occur prior to clinical manifestations. Measuring ethnic differences in microvascular endothelial function will provide insight into the disparate cardio-metabolic disease profiles that exist within a multi-ethnic South African population. Moreover, it has been shown that insulin resistance is associated with microvascular endothelial dysfunction in obese persons4, but it is unclear whether this relationship is mediated by body fat in apparently healthy indiv

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Bohlmann, Isabelle Marie Therese. "Measurement of physical activity for public health purposes : validity and reliability of the International Physical Activity Questionaire(IPAQ)." Master's thesis, University of Cape Town, 2002. http://hdl.handle.net/11427/26547.

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Physical inactivity is a well-recognized risk factor for chronic diseases of lifestyle and has been associated with an increased incidence of morbidity and mortality. Current recommendations for the "dose" of physical activity that may be regarded as "protective" for these chronic diseases are 30 minutes or more of moderate-intensity physical activity on most, or preferably all, days of the week. However, when quantifying physical activity, it is not clear which factors influence the reporting of moderate and vigorous activity levels. Even in the literature, there is lack of agreement on the e

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Henst, Rob. "The role of chronotype in the participation and performance of South African and Dutch marathon runners." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/13131.

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Includes bibliographical references.<br>Introduction: Our circadian rhythms are internal biological rhythms of approximately (circa) 24 - hours (dies) allowing us to synchronize our internal biological “clock” with external time cues. Many innate biological functions are dependent on time-of-day, such as secreting adrenaline and cortisol in the mornings and melatonin in the evenings. The time-of-day at which these and other physiological functions are active, change or reach a certain level may influence a person’s diurnal preference, i.e. preference for mornings (morni

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Burden, Stephen Barry. "The seasonal and lifetime incidence of low back pain in South African male first league squash players." Master's thesis, University of Cape Town, 1996. http://hdl.handle.net/11427/26593.

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Previous studies have been conducted to determine the incidence of low back pain (LBP) in both the general population as well as in participants of different sporting activities. The purpose of this study was to determine the seasonal and lifetime incidence of LBP in male first league squash players.

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Miller, Caron-Jayne. "Intrinsic and extrinsic factors associated with change in range of motion (ROM) after a single stretch session and repeated loading following an endurance run." Master's thesis, University of Cape Town, 2011. http://hdl.handle.net/11427/10688.

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Static stretching is commonly performed by athletes and clinicians on the assumption that it increases joint range of motion (ROM). However, observations from our laboratory indicate that there is an apparent inter-individual variance in the change in ROM in response to static stretching. Furthermore, prolonged repetitive loading has also been shown to affect ROM of a joint or series of joints. In particular, runners have a significantly decreased hamstring ROM. The aim of this study was to investigate the factors which are associated with a change in ROM in response to 1) a static stretch ses

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Schoeler, Lieselotte Maria. "Personality traits and cognitive performance in elite athletes." Master's thesis, University of Cape Town, 2009. http://hdl.handle.net/11427/6056.

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Includes abstract.<br>Includes bibliographical references (leaves 42-58).<br>Mental performance consists of cognitive components, such as memory capacity, motor function, or decision making, and psychological components, such as personality traits, psychological well-being, or coping strategies. While certain personality traits have been shown to be associated with specific strengths and weaknesses in an individual’s cognitive abilities only few studies have been done to investigate this relationship in athletes. Our study therefore aims to investigate the correlations between certain personal

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Coleman, Kirsty Lee. "Exercise tolerance and skeletal muscle structure and function in patients with chronic obstructive pulminary disease." Master's thesis, University of Cape Town, 1998. http://hdl.handle.net/11427/17935.

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Bibliography: pages 143-154.<br>Exercise intolerance is well documented in patients with chronic obstructive pulmonary disease (COPD). Historically, this exercise intolerance has been attributed to the central factors of lung damage and subsequent heart failure. However, recent evidence suggests that (i) patients with cardiac and renal failure suffer from skeletal muscle (SM) abnormalities that impair exercise tolerance and (ii) patients with chronic obstructive pulmonary disease (COPD) may have metabolic and functional abnormalities of SM. However, no studies have conducted a detailed investi

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41

Sewry, Nicola. "Key performance indicators and predictors in Varsity Cup rugby." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/13267.

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Rugby union is a popular sport worldwide, and due to the professional nature of the sport the demands on players continues to increase, resulting in acute and chronic fatigue. The aims of the study were to investigate the tools used to monitor and predict changes in training status and determine the effectiveness of these to: (i) measure the subjective nature of coaches and their selection relating to the players’ performance, and (ii) to use performance indicators to correlate to team performance. The University of Cape Town Rugby Varsity Cup Team (First XV squad) were monitored from their pr

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42

Du, Toit Jacques. "Playing time of professional senior rugby players across all levels of South African rugby, 2007 -2012: implications for transformation." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/5927.

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Includes abstract.<br>Includes bibliographical references.<br>A single governing body to govern South African rugby was formed in 1992. This allowed for changes to governmental policies to South African sport, resulting in South African sport being fully representative of the population. The South African Rugby Union (SARU) therefore has a continual challenge to make rugby fully representative at both provincial and national levels. Previously rugby has been dominated by white players at all levels. The SARU has implemented various programmes in order to accelerate the development of players o

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43

Marsh, Jarred. "Injury incidence and severity at the South African Rugby Union (SARU) Youth Weeks Tournaments: a four year study." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29198.

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Introduction Rugby Union (hereinafter referred to as ‘rugby’) is a contact sport with players being exposed to repetitive collisions throughout a match. As the risk of injury is relatively high, incidence surveillance studies within rugby has become popular. However most of the studies have focussed on senior players. The data on injuries among youth rugby players are limited. This makes it difficult to develop the game to make it safer for youth of all ages. Objectives The first objective of this study was to establish if any injury trends exist across different ages of youth rugby play

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44

Schutte, Lynne. "The effect of repeated bouts of downhill training on running performance and recovery after a 30-km time trial." Master's thesis, University of Cape Town, 2001. http://hdl.handle.net/11427/26545.

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Purpose: The present study was designed to examine the effect of repeated bouts of either downhill or level running on running performance in, and recovery from, a 30-km time trial. Methods: Sixteen male subjects with a mean (± SD) age of 33.8 ± 5.8 years, body mass of 72.0 ± 7.3 kg and a stature of 176.6 ± 4.5 cm were randomly allocated to either a downhill (n=9) or a level group (n=7). The protocol consisted of a training phase, followed by a 30-km time trial and a recovery phase. During the training phase subjects ran either at a -10% grade (downhill group) or a 0% grade (level group) on a

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Bellinger, Brett. "The effect of oral creatine supplementation on one hour cycling performance and metabolism." Master's thesis, University of Cape Town, 1995. http://hdl.handle.net/11427/26524.

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The effect of oral creatine (Cr) supplementation with 20 g/day for 7 days on one-hour cycling performance and metabolism was investigated in a double-blind placebo controlled study. Twenty endurance-trained male cyclists volunteered for the study that was approved by the University of Cape Town ethics committee. The subjects' peak sustained power output was measured and they underwent a familiarization one-hour cycle on a cycle ergometer. Five days later subjects had a muscle biopsy and an indwelling cannula was inserted into a forearm vein before performing a maximal one-hour cycle (T1) durin

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Schoeler, Gunnar. "The validation of muscle power output measures in lower and upper body resistance exercises." Master's thesis, University of Cape Town, 2009. http://hdl.handle.net/11427/2763.

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Includes abstract.<br>Includes bibliographical references (p. 104-115).<br>The reliability and comparability of results obtained from different methods of assessment has been the source of debate for the last decade. Aim: To investigate the reliability and comparability of measurements of force, velocity and power measured simultaneously during upper and lower body resistance exercises for the following three methods: a) power derived from ground reaction force, i.e. using a force plate (FP), b) power derived from the displacement of the bar, i.e. displacement tracking laser (L) and c) power a

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Durandt, Justin. "A description of the profiles of U18 rugby players who attended the Craven Week tournament between 2002-2012." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29657.

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Rugby union has rich tradition in South Africa with the national team having won the Rugby World Cup in 1995 and 2007. The major rugby nations South Africa competes against have clearly defined rugby talent identification (TID) and development (TDE) pathways. These pathways are not as well described in South Africa where the South African Rugby Union (SARU) has adopted a model of identifying talent at an early age through competition. For example, national competitions occur at U13 (Craven Week), U16 (Grant Khomo Week) and U18 (Craven Week and Academy Week) levels. Previous research on talent

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Goyaram, Veeraj. "Regulation of skeletal muscle glucose transporter 4 expression in fructose-fed exercised rats." Master's thesis, University of Cape Town, 2013. http://hdl.handle.net/11427/2751.

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Includes abstract.<br>Includes bibliographical references.<br>Several studies have found that the expression of skeletal muscle glucose transporter 4 (GLUT4) is decreased by high fructose consumption but increased by exercise. However, the amounts of fructose used in these studies were extremely high and the effects of moderate feeding protocols are not known. While it is known that exercise enhances GLUT4 expression via increased histone H3 acetylation and binding of the myocyte enhancer factor- 2A (MEF2A) transcription factor to its binding domain on the Glut4 gene promoter, the impact of fr

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Leith, David. "Metabolic and lifestyle profiling of overweight female runners compared to lean counterparts: exploring the implications and causes of their elevated body weight." Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/22715.

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There appears to be an emerging phenotype of recreational runners who are overweight despite being regularly active. This conflicts with the common perception that exercise protects against weight-gain, and it may be caused by underlying insulin-resistance. Alternatively, recent research has brought attention to metabolically healthy obese (MHO) individuals, who have increased adiposity but no commonly associated metabolic abnormalities, such as insulin-resistance, hypertension, dyslipidaemia and systemic inflammation. This study aimed to determine whether overweight (OW, BMI ≥ 25 kg.m⁻²) fema

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Bakkum, Amanda. "A randomised control trial for the restoration of functional ability in patients post total knee arthroplasty: a comparison of eccentric versus concentric cycling ergometry." Master's thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/16477.

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Includes bibliographical references<br>Purpose: The predominant impairment to function following a total knee arthroplasty (TKA) is a distinctive reduction in quadriceps muscle strength. It has been suggested that eccentric rehabilitation may be more beneficial than traditional concentric only rehabilitation at improving muscle strength, physical functioning and quality of life in this population. The aim of this study was therefore to determine if an eccentric cycling ergometry rehabilitation intervention (a) was feasible in participant's early after TKA surgery (Study 1), (b) resulted in gre

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