SAMMANFATTNING Bakgrund På grund av prestationskrav kan elitidrottare utsätta sig för att träna trots hög smärtintensitet. Flertalet kvantitativa studier har undersökt vilka copingstrategier som används av idrottare med smärta. Däremot är elitidrottares egna upplevelser av smärta ännu ett outforskat område.   Syfte Att undersöka en grupp elitidrottares upplevelser av smärta och deras strategier för att träna i närvaro av smärta.    Metod Fyra semistrukturerade intervjuer med elitidrottare har utförts. Databearbetningen har skett med hjälp av kvalitativ innehållsanalys.   Resultat Det framkom tio kategorier. Smärta beskrevs som uppmärksamhetskrävande och något som kunde ge negativa konsekvenser. Yttre faktorer såsom omgivningens utformning samt inre faktorer såsom förväntningar och fokus tycktes påverka smärtupplevelsen under träning. Hanteringen av smärta skedde genom sätt att tänka och agera, såsom positivt självprat och uppvärmning.   Konklusion Smärta upplevdes som ett hinder som kunde påverkas av yttre och inre faktorer. Inom träning kunde smärta hanteras genom olika sätt att tänka och agera. Vidare forskning kan leda till klinisk nytta för fysioterapeuter i kontakt med elitidrottare. / ABSTRACT   Background Because of demands of performance elite athletes can expose themselves to train regardless of pain intensity. Several quantitative studies have examined coping strategies used by athletes with pain. However, the elite athlete's own experiences of pain is still an unexplored area.   Aim To investigate a group of elite athletes' experiences of pain and their strategies for training in the presence of pain.   Methods Four semi-structured interviews with elite athletes have been conducted. Data processing has been done by using qualitative content analysis.   Results Ten categories emerged. Pain was described as attention-consuming and something that could have negative consequences. External factors such as environment and internal factors such as expectations and focus seemed to affect the pain experience during training. The pain was managed through ways of thinking and acting, like positive self talk and warming up.   Conclusion Pain was perceived as an obstacle that may be affected by factors in the environment and within themselves. Within training pain could be managed through different ways of thinking and acting. Further research can lead to clinical benefit for professionals in contact with elite athletes.

Training in sport environments that emphasize leanness and muscularity may damage athletes' body image and negatively influence male athletes' eating behaviors and attitudes. The Questionnaire for Eating Disorder Diagnosis and the Bulimia Test – Revised were completed anonymously online by 732 male intercollegiate athletes. Most male collegiate athletes were classified as asymptomatic (82.9%), followed by symptomatic (16%) and eating disordered (1.1%). The most common forms pathogenic behaviors were excessive exercise (51.6%), binge eating (21.4%), and dieting or fasting (20.5%). Results suggested that athletes who participate in weight class sports are at higher risk for developing these behaviors than endurance sport or ball game athletes. Counseling and other implications for professionals working with athletes are discussed.

MSc (Med), Biokinetics, Faculty of Health Sciences, University of the Witwatersrand / Introduction: Performance enhancing substance (PES) use is a major concern currently facing adolescent sport. The youth have become more competitive in sport, with some using substances and supplements to improve their performance. Unfortunately, some of these adolescent athletes are using substances that are both harmful to their health and prohibited. Aim of study: To establish the attitudes and perceptions towards and the use of PES, including prohibited substances and food supplements, by adolescent male athletes, in selected Johannesburg boys’ high schools. Method: The study design was a cross-sectional study using a self-administered questionnaire. Male adolescent high school learners involved in 1st and 2nd team competitive high school sport in seven Johannesburg boys’ high schools were invited to volunteer to participate in the study. Questionnaires were completed under conditions similar to an examination, where participants were not allowed to communicate with each other. Demographic data was analysed using descriptive statistics. Results: The sample size was 100. Results indicated that the prevalence of PES use amongst the participants was 30%. The use of prohibited substances was found, including growth hormone (5%), anabolic androgenic steroids (4%), and adrenaline (4%). Food supplement use was also found in this sample, including creatine (32%), protein (61%), carbohydrate (54%), caffeine (57%) and vitamin (61%) supplementation. Most of the participants (83%) that used PES started using them when they were over 15 years old. The majority of the participants (42%) played rugby as their main high school sport. Conclusion: The findings indicate that there was generally a low prevalence of ergogenic substance use in Johannesburg boys’ high school sport for performance enhancement. Substances such as anabolic androgenic steroids (4%) and growth hormone (5%) were found to be used by the learners. The anti-doping attitude of the learners may be improved by education programmes, which aim to decrease the prevalence of prohibited PES use in adolescent sport.

Compiled by: David P. Speech/y in fulfilment of an MSc(MED) degree Department of Physiology University of the Witwatersrand Medical School Johannesburg, SOUTH AFRICA. / Our study comprised of a two fold investigation into i. the comparing of physiological function in a performance-matched (running 42.2km) group of females (n=10) and males (n=10), and ii. the analysis of the performance changes over four different distances. The female group ran an average of 3:36 ± 0:42 hours, and the male group an average of 3:39 ± 0:47 hours for a standard marathon. After matching the two groups we measured physical characteristics, maximal aerobic capacity (V02max), fitness level (lactate accumulation), energy cost of running (running economy), and muscle function (isokinetic dynamometry). The female group had a significantly lower (P<0.05) relative V02max (48.3 ± 2.8mlQ2• min'1 • kg"1 vs 51.3 ± 3.3ml02*min'1-kg'1) , lower absolute peak muscle torque for quadriceps at all angular velocities investigated (60-; 180-; and 240°-sec'1), but only at 240° • sec'1 for the hamstrings (29.0 ± 15.1Nm vs 46.6 ± 15.3Nm). However, females had lower (P<0.05) relative peak torques (expressed relative to the lean thigh volume) than males only for the quadriceps group of muscles at 180°-sec'1 (12.19 ± 4.75Nm-2'1 vs 18.87 ± 7.01Nm*l"1) The females had a greater (P<0.05) percentage body fat than the males (22.0 ± 3.2% vs 16.1 ± 3.0%). / IT2018

A alta prevalência de broncoespasmo induzido pelo exercício (BIE) tem sido observada em atletas que praticam modalidades de longa duração. Até o presente momento, nenhum estudo foi realizado no Brasil. Por essa razão, o objetivo deste estudo foi verificar a prevalência de BIE em corredores de longa distância. Para isto, 22 atletas do gênero masculino foram submetidos à prova de função pulmonar, teste de esforço ergoespirométrico e teste de broncoprovocação induzida por hiperpnéia (BIH). Os atletas responderam um questionário sobre sintomas de asma e forneceram informações relacionadas aos seus treinamentos. Após realizarem o teste de BIH, os atletas foram classificados de acordo com a variação do volume expiratório forçado no primeiro segundo (VEF1) em comparação ao valor basal. Aqueles que apresentaram queda do VEF1 igual ou superior a 10% foram denominados Grupo BIE+; os demais foram designados Grupo BIE-. Os resultados demonstraram a presença de BIE em 25% dos atletas. Não foram evidenciadas diferenças estatisticamente significantes em relação às características antropométricas, aos valores basais de função pulmonar, assim como aos parâmetros analisados durante o teste ergoespirométrico. Um aspecto interessante xi observado foi que, os atletas do Grupo BIE+ percorrem, nos seus treinamentos, uma distância inferior quando comparados aos atletas do Grupo BIE- (p&#8804;0,05). Estes resultados sugerem que a presença de BIE pode limitar o rendimento esportivo / The high prevalence of exercise-induced bronchospasm (EIB) has been observed in endurance athletes. Until today, no such study had been conducted in Brazil. The aim of this study was to look for prevalence of EIB among long-distance runners. Twenty-two male athletes were subjected to pulmonary function tests, maximal exercise tests and hyperpnea-induced broncoprovocation (HIB). The athletes also answered questions about asthma symptoms and provided information about their training programs. After the HIB test, they were ranked by the variation in the FEV1 (Forced Expiratory Volume in the first second). Those with a decrease of 10% or more were labeled EIB+ group; all the others were labeled EIB - group. Results show the presence of exercise-induced bronchospasm in 25% of the athletes. Among them, there were no significant statistical differences related to anthropometric characteristics, basal pulmonary function values or other parameters analyzed during the ergospirometric test. One interesting aspect observed was that, in their training sessions, the EIB+ Group athletes ran a shorter distance when compared to those in the EIB- Group (p&#8804;0.05). These results suggest that EIB presence may be a limitting factor in sports performance

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Training stress in the absence of adequate recovery has been associated with a decrease in well-being and performance. Thus, there is potential for the high training and competition loads that elite English youth football players experience to have a negative effect on wellbeing and performance. The aim of the thesis was to assess the utility of well-being and physical performance assessments in managing the development of elite English youth football players. The first study (Chapter 4) examined the sensitivity of a subjective well-being questionnaire (WQ; developed ‘in-house’ by sport science practitioners at a category two academy and only taking < 30 s to complete), by comparing the player’s next day responses between two acute training bouts of varied duration; 15 mins (low load) compared to 90 mins (high load) high intensity intermittent exercise (Loughborough intermittent shuttle test, LIST). WQ items showed small to large deteriorations following the high load compared to low load (d=0.4-1.5, P=0.03-0.57). The ability of the WQ to differentiate between responses to high and low training loads indicated that this questionnaire could be used to detect training induced stress prior to training on a daily basis throughout the season. Other modes of monitoring assessment evaluated were either not sensitive to differentiate between high and low loads (countermovement jump; CMJ) or detected differences between high and low training load responses (HR indices) but lacked utility in detecting individual changes. The second study (Chapter 5) applied well-being and physical performance assessments to elite English youth football players during a high intensity, low volume pre-season training period. Trivial changes in perception of WQ items of sleep, recovery, appetite, fatigue, stress and muscle soreness were observed across weeks (P=0.35-0.93, 2 P  =0.02-0.08) with no negative WQ responses evident. Internal training load was lower to a large extent in week 1 (P= < 0.001, 2P  =0.54) yet no differences in internal training load were evident across weeks two, three, four and five. Trivial to small associations (r=-0.21 to 0.19) between internal training load and WQ responses were observed. Small to moderate improvements in aerobic performance were evident post training in comparison with pre training (P < 0.001-0.53, d= 0.33 – 0.94) with a large to moderate improvement in submaximal HR measures (P < 0.001 – 0.09; 2 P  = 0.34 - 0.74) observed across the training weeks. Trivial to moderate impairments in neuromuscular performance were evident post training in comparison with pre training (P < 0.001 – 0.21; d=0.17 – 1.00). Collectively, the preservation of well-being prior to each training session during a pre-season period and improvements in aspects of physical performance were indicative of a balance between stress and recovery. The third study (Chapter 6) examined player perceptions of well-being and physical performance across a season in Elite English youth football players. Increases in training exposure (P < 0.05; 2 P  =0.52) and moderate to large deteriorations in perceptions of well-being (motivation, sleep quality, recovery, appetite, fatigue, stress, muscle soreness P < 0.05; 2 P  =0.30-0.53) were evident as the season progressed. A large improvement in Yo-Yo intermittent recovery test performance (Yo-Yo IRT; P < 0.05; 2 P  =0.93) and a small to moderate impairment in neuromuscular performance (P > 0.05; 2 P  =0.18 - 0.48) was observed as the season progressed. These findings show an imbalance between stress and recovery in English elite youth football players even when players experienced lower training exposure than stipulated by the elite player performance plan (EPPP). In summary, this thesis highlights the potential utility of subjective well-being assessments to inform the management English elite youth football player development. Furthermore, it highlights the high training volumes that English elite youth players are exposed can potentially lead to an imbalance between stress and recovery.

Thesis (Ed.D.)--Boston University / PLEASE NOTE: Boston University Libraries did not receive an Authorization To Manage form for this thesis or dissertation. It is therefore not openly accessible, though it may be available by request. If you are the author or principal advisor of this work and would like to request open access for it, please contact us at open-help@bu.edu. Thank you. / Sexual victimization is a serious public health issue in the United States, particularly on its college campuses. Several attempts have been made to identify groups at high risks for exhibiting sexually aggressive behaviors. In the same vein, this study examines the relationship between athletic participation and sexual aggression with a focus on wrestlers. The author hypothesized that wrestling participation and athletic participation would be positively correlated with sexual aggression. However, it was also hypothesized that this relationship would be mediated by masculinity (gender role conflict) and masculinity related variables (sexual entitlement and competitiveness). A one-way Analysis of Variance (ANOVA) followed by post hoc tests found no significant difference between Wrestlers and Non-Athletes on levels of sexual aggression at the Q = .05 level. Similarly, no significant differences were found between Other Athletes and Non-Athletes at the same alpha level. However, a near significant difference (Q = .058) was found between Multisport Athletes and Other Athletes. A regression analysis was also conducted, which found sexual entitlement, wrestling participation, and drinking intensity as significant predictors of sexual aggression. However, a partial correlation analysis found no mediating effects between wrestling participation and sexual aggression when sexual entitlement and drinking intensity were held constant. Recommendations for rape prevention programs were made based on these findings. / 2031-01-01

The aims of this thesis were to determine the relationship between transition model variables and athlete reactions to the transition event, the incidence of positive versus negative reactions to the event, identifications of variables that assisted or hindered the adaptation process, and the usefulness of the revised model for investigating a transition event. The study was conducted using a sample of adolescent athletes who participated in the residential program at the Australian Institute of Sport during the years 1993 to 1997. The findings highlighted areas for future consideration in research and development of transition programs for institutional settings / Doctor of Philosophy (PhD) (Psychology)

Nine Australian male cross country ski team members (19.8±2.5 years, (X±SD),76.6±6.4kg, 184.8±4.9cm) completed both an incremental maximal exercise test and a 45 minute time trial performance test using a dryland ski striding technique with poles on a treadmill. Testing occurred at 610m in a chamber that was supplied with either an 02 enriched (p02 = 152mmHg) or an N2 enriched (p02 = 132mmHg) gas mixture to simulate sea level (SL) or 1800m (A) conditions respectively. A 48 hour rest interval was provided between tests and the testing conditions were randomised, counterbalanced and double blind. At maximum effort there were significant differences in V02 max (70.2±4.0 v 61.7±2.9 ml.kg-1.min-1), PaO2 (97.2±12.7 v 77.1±11.2 mmHg) and SaO2 (90.6±4.9 v 77.8±3.9%); but not in HR (194.1±8.1 v 191.7±7.4 bpm), VE (133.1±12.8 v 132.6±11.3 L.min-1 STPD) or [La] (14.2±2.3 v 13.7±3.3 mM) at SL v A. There was a decrease of 7.6% in overall time trial performance between the conditions (4005±378 v 3702±301 m, p = 0.08), although performance was significantly lower at A during the latter period of the test, >25 minutes. During the steady state stage of the time trial performance test, (=75% SL VO2 max) there were no significant differences between SL and A in any of VO2 (52.9±5.9 v 52.1±4.9 ml.kg-'.min-' at 15 minutes for SL and A respectively); HR (173.1±12.8 v 176.1+10.1 bpm); or [La] (3.0±1.0 v 4.8±2.2 mM). However, there was a significant reduction in PaO2 between SL (111.2±25.5 mmHg at 15 minutes) and A (72.6±24.3 mmHg at 15 minutes), resulting in a significant reduction in SaO2 (96.6±1.1 v 84.6±6.8% at 15 minutes) between the conditions. At the end of each lap of the variable workload stage of the time trial performance test there were significant reductions in VO2 (65.3±6.9, 64.2±6.3 and 66.4±5.9 v 54.6±5.6, 56.0±4.6 and 57.9±3.2 ml.kg-'.min-1 at 25, 35 and 45 minutes at SL v A); and HR (190.1 ±9.2, 192.4±8.6 and 195.9±7.6 v 181.8±12.4, 186±8.1 and 189.6±9.2 bpm) under A conditions. There were no significant differences in [La] at the end of each lap of the time trial performance test between SL and A, although [La] did increase over time during the test at both SL and A (6.2±2.0, 8.9±2.8 and 10.6±4.1 v 7.6±2.0, 8.4±2.2 and 9.9± 1.8 mM). At the end of each lap of the time trial performance test, there was a significant reduction in PaO2 (120.9±24.4, 108.8±25.9 and 103.0±23.0 v 86.0±31.4, 94.9±22.3 and 71.1±3.2 mmHg); and SaO2 (94.6±2.4, 94.3±2.4 and 92.3±3.4 v 85.9±5.8, 84.3±6.4 and 81.7±6.1%) and both PaO, and SaO2 decreased over time during the test at both SL and A. This study has indicated that as well as the extent of hypoxia induced by altitude, both exercise intensity and duration may impact on the magnitude of the response to sustained exercise at altitude, such as in cross country ski racing.