Typescript (photocopy). / Digitized by Kansas Correctional Industries

Made available in DSpace on 2014-06-11T19:30:52Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-03-16Bitstream added on 2014-06-13T20:40:40Z : No. of bitstreams: 1 santhiago_v_dr_rcla.pdf: 487613 bytes, checksum: 08693467b4d88569bdc7cc8c28ab9031 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Considerando a necessidade de avaliar a capacidade aeróbia de nadadores e assim prescrever as intensidades adequadas de treino durante ciclos de treinamento, vários estudos foram desenvolvidos com diferentes protocolos a fim de identificar instrumentos de aplicabilidade prática capazes de avaliar e quantificar a capacidade aeróbia. Entretanto, ainda existem controvérsias a respeito dos modelos invasivos e não invasivos e exaustivos e não exaustivos que representem de forma mais fidedigna a máxima fase estável de lactato (MFEL). Além disso, existe também, carência de investigações relacionadas à utilização do sistema de nado atado na avaliação de parâmetros fisiológicos, mecânicos e como ferramenta no treinamento de nadadores. Desse modo, o objetivo geral do presente estudo foi padronizar e testar diferentes modelos invasivos e não invasivos de avaliação aeróbia na natação, por meio de protocolos em nados livre e atado, validando-os através da comparação com a MFEL. Para isso, foram avaliados 12 nadadores do sexo masculino durante um período de polimento na natação. Foram utilizados protocolos de MFEL, velocidade crítica (Vcrit), Vcrit obtida por meio do protocolo proposto por Chassain (1986), MFEL em nado atado, força crítica (Fcrit) em nado atado e Fcrit obtida por meio do protocolo proposto por Chassain (1986). Para verificar possíveis diferenças entre as respostas agudas de stress obtidas após a utilização de diferentes protocolos em nados livre e atado, concentrações sanguíneas foram mensuradas. / Considering the need to evaluate the aerobic capacity in swimmers and to prescribe the appropriate intensities of training, several studies were developed with different protocols in order to identify practical applicability instruments capable to evaluate and to quantify the aerobic capacity in swimmers. However, still controversies exist regarding the invasive and non invasive models which represent the maximal lactate steady state (MLSS). The aim of the present study was to standardize and to test differents invasive and non invasive models of aerobic and anaerobic evaluation in the swimming, by protocols in free and tethered swimming, validating them by the comparison with the MFEL. Twelve male swimmers were evaluated during the taper period in the swimming. Protocols of MLSS, critical swimming velocity (CSV), Vcrit obtained through the protocol proposed by Chassain (1986), MFEL in tethered swimming, critical force (CF) in tethered swimming and CF obtained by the protocol proposed by Chassain (1986). To verify possible differences among the stress responses obtained after the use of different protocols in free and tethered swimming, enzymatic plasma concentrations were measured.

Thesis (M. Phil.)--University of Hong Kong, 2005. / Title proper from title frame. Also available in printed format.

The purpose of this study was to investigate the relationship between aerobic activity and academic performance through stress reduction using a student recreational facility. Research indicated that learning in college tends to focus on the academic aspects of the undergraduate experience - the classroom, laboratory, and the library - not other factors potentially affecting academic performance (Kuh et al., 1991). Forty women were randomly selected from the undergraduate population at Texas A&M University in order to analyze the relationship between aerobic activity and academic performance by measuring perceived stress levels. All participants completed an on-line stress questionnaire, the Perceived Stress Scale (PSS), every three weeks. Exam scores from an introductory sociology course and an educational statistics course were used for data analysis also. The experimental group (exercise group) used twelve weeks of regular aerobic exercise, while the control group (non-exercise) remained sedentary. During the twelve-week period, all participants self-reported data for additional qualitative data. Research findings of this study included: 1. The main benefit from aerobic activity was that women who exercised regularly felt more positive about academics and non-academic activities than women who did not exercise regularly. 2. There was no statistical significant difference between exam scores and academic performance of women who exercised regularly and those who did not exercise regularly. 3. There was no statistical significant difference between stress levels of women who exercised regularly and women who did not exercise regularly. Based on the findings of the study, researcher recommendations include: 1. Continue to investigate the changing demographics of college students - namely, age, sex, and non-traditional students. This study was limited to fulltime women between the ages of 18-24. Men and part-time students need to be included in a comparable study, providing campuses with more data that reflects the entire student population. 2. Explore additional areas in sociology and psychology that address exercise behavior trends in college students. Results from this study indicated that there are many variables, including stress, that affect college students in the behavioral sciences that can be attributed to differences in physical activity between sedentary and non-sedentary people. 3. Analyze health factors, which include amount of exercise, nutrition, and sleep patterns.

Thesis (M.S.)--University of Delaware, 2009. / Principal faculty advisor: David G. Edwards, Dept. of Health, Nutrition, & Exercise Sciences. Includes bibliographical references.

Thesis (Ph.D.)--Virginia Commonwealth University, 2009. / Prepared for: Dept. of Health and Human Performance. Title from title-page of electronic thesis. Includes bibliographical references.

Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2004. / Includes bibliographical references. Also available in electronic version. Access restricted to campus users.

Thesis (M.S.)--Ball State University, 2009. / Title from PDF t.p. (viewed on Nov. 30, 2009). Includes bibliographical references (p. 79-90).

Thesis (Ph. D.)--Hong Kong University of Science and Technology, 2003. / Includes bibliographical references (leaves 170-181). Also available in electronic version. Access restricted to campus users.

Evidence shows that consumption of a Mediterranean diet can lower the risk of all-cause and cause-specific mortality suggesting that this diet has an overall effect on health. Antioxidants found within olive oil, the primary source of fat in the Mediterranean diet, may be leading contributors to the decreased disease risk. More specifically, hydroxytyrosol (HT), one of the most active and powerful antioxidants found in olive oil, has the ability to increase total antioxidant status and lower levels of lipid peroxidation. In addition to a healthy diet, physical activity decreases the risk of cardiovascular morbidity and mortality; however, aerobic exercise of sufficient intensity or duration can induce oxidative stress. Therefore, the purpose of this study was to investigate the effects of 6 weeks of HT supplementation on antioxidant status and markers of inflammation in healthy, recreationally active males before and throughout acute aerobic exercise bouts. Using a randomized, double-blind, repeated-measures, placebo-controlled design, sixty-one (n=61) participants were randomly assigned to consume a placebo (PLA), low dose of HT (LHT, 50 mg/day), or high dose of HT (HHT, 150 mg/day). Throughout the course of the study, the participants performed four time trial rides (TT1-TT4) on cycle ergometers. TT1 occurred before supplementation, TT2 halfway through the supplementation period, and TT3 and TT4 occurred in the sixth week and final two days of supplementation. Blood was drawn prior to (pre) and just before termination (end) of each time trial to measure markers of antioxidant status and inflammation during exercise. We did not observe significant main effects for treatment on any of the markers for antioxidant status (TEAC) or for markers of inflammation (oxLDL, CRP, 8IP, TNFα, IL-6, IL-10, IL-1β, or IL-1ra). Significant treatment-by-time interactions occurred for CRP, 8IP, and IL-6 although significant treatment differences in these measures were not detected. We conclude that chronic and acute HT supplementation does not improve antioxidant status nor decrease markers of inflammation in this population at rest, during, or following exercise. / text