Submitted by Sara Ribeiro (sara.ribeiro@ucb.br) on 2017-05-05T18:58:57Z No. of bitstreams: 1 StephanyVieiraBritoDissertacao2017.pdf: 1138647 bytes, checksum: 67411fc8bc6f6a991f7f6f64103b0e6d (MD5) / Approved for entry into archive by Sara Ribeiro (sara.ribeiro@ucb.br) on 2017-05-05T18:59:26Z (GMT) No. of bitstreams: 1 StephanyVieiraBritoDissertacao2017.pdf: 1138647 bytes, checksum: 67411fc8bc6f6a991f7f6f64103b0e6d (MD5) / Made available in DSpace on 2017-05-05T18:59:26Z (GMT). No. of bitstreams: 1 StephanyVieiraBritoDissertacao2017.pdf: 1138647 bytes, checksum: 67411fc8bc6f6a991f7f6f64103b0e6d (MD5) Previous issue date: 2017-02-23 / Event-related brain potentials (ERPs) have been instrumental for discerning the relationship between physical activity and aspects of cognition in children. We aimed to verify and compare the waveform of N450 ERP component in Stroop task between active play, passive play and control sessions in children. 13 girls and boys (9.5??0.8yr; 32.05??5.9kg; 1.38??0.1m; 16.36??4.2%body fat) participated on this study. Firstly, they were performed anthropometric evaluations. Thereafter, three sessions lasting 30min were performed in randomized order: 1) Control ??? seated watching a documentary (92.4??8.9bpm); 2) Active Play ??? games with movement, eg. jumping jacks, running, jumping (152.8??16.31bpm); 3) Passive Play ??? playing games seated, eg. puzzles of colors, animals and numbers (99.6??28.2bpm). Subsequently, they completed a Stroop task (GO/No-go) while brain electrical activity was recorded with EEG. ERPs were recorded and calculated from electrodes at Fz, F3, F4, Fp1 and Fp2. Mean peak amplitude of N450 component were used to compare the electrical brain responses between sessions. The ANOVA of N450 mean amplitudes revealed a significant main effect for interaction of factor frontal anterior in control sessionF(2,36) = 3.63, p = 0.04 (fig 1). The N450 amplitude in the incongruent condition was less negative in active play than in control session in the frontal sites (p=0.11). In the Stroop test, no significant differences in reaction time between sessions were observed (F (1.92) = 0.05, p = 0.94). The control differed in congruent Go responses between the passive and active sessions (p = 0.01), and the results of the active session also differed from the passive (p = 0.04). The comparison of total errors per session also presented a significant difference (p = 0.02) between control and passive (F (1,71) = 8.8, p <0.05). In conclusion, 30 minutes of active play promoted a lesser response conflict in the incongruent stimuli in the Stroop test, in the N450 component, in addition to a greater activation of the prefrontal cortex. / A atividade f??sica e cogni????o s??o ??reas que est??o cada vez mais correlacionadas. O estudo objetivou verificar e comparar os efeitos agudos de brincadeiras ativas, passivas e controle na modula????o da onda N450 em escolares. 13 escolares de ambos os sexos (9,5??0,8anos; 32,05??5,9kg; 1,38??0,1m; 16,36??4,2%G) participaram de tr??s sess??es com dura????o de 30min em ordem randomizada: 1) Controle ??? sentadas assistindo um document??rio (92,4??8,9bpm); 2) Brincadeiras Ativas ??? brincadeiras com saltos, polichinelos e corrida (152,8??16,31bpm); 3) Brincadeira Passiva ??? brincando sentados com jogos pedag??gicos. Ap??s isso, realizaram o teste de Stroop (GO/No-go) enquanto era adquirida a atividade el??trica cerebral atrav??s de um eletroencefalograma (EEG) e registrado o potencial relacionado a evento (PRE), calculado pelos eletrodos Fz, F3, F4, Cz, Fp1 e Fp2. A ANOVA apresentou signific??ncia na m??dia do pico de amplitude da N450, com rela????o a intera????o do fator frontal anterior na sess??o controle F(2,36)= 3,63, p= 0,04. Na condi????o incongruente a amplitude da N450 foi menos negativa nos eletrodos frontais nas brincadeiras ativas comparada com controle (p=0,11). J?? no teste de Stroop, n??o foram observadas diferen??as significativas do tempo de rea????o entre as sess??es (F(1,92)=0,05, p=0,94). O controle diferiu nas respostas congruentes Go entre as sess??es passiva e ativa (p=0,01), e os resultados da sess??o ativa tamb??m diferiram da passiva (p=0,04). A compara????o do total de erros por sess??o tamb??m apresentou diferen??a significativa (p=0,02) entre controle e passiva (F(1,71)=8,8,p<0,05). Em conclus??o, 30 min de brincadeiras ativas promoveram menor conflito de resposta no teste de Stroop, no componente N450, com isso menor conflito de resposta no teste de Stroop nos est??mulos incongruentes, al??m de maior ativa????o do c??rtex pr??-frontal.

Made available in DSpace on 2015-04-14T13:22:13Z (GMT). No. of bitstreams: 1 448317.pdf: 889476 bytes, checksum: 396d04bf4ac0c79668e4b39da8e813af (MD5) Previous issue date: 2013-01-17 / Cardiovascular diseases are the leading cause of death worldwide and its prevention and non pharmacological treatment depends on a change in life style that involves adherence to a healthy diet combined with regular physical exercise. Maintaining these habits implies a motivation to which self-efficacy is an important moderator. To establish these relationships are required precise measurements, therefore Bandura developed scales that evaluate the degree of confidence in maintaining a diet and exercise routine even in situations that may hinder the maintenance of these habits. This study aimed to translate, perform semantic adaptation and search for evidence of the psychometric scales Self-efficacy to Regulate Exercise and Self-efficacy to Regulate Eating Habits. The sample was composed of 303 participants, 113 males and 190 females that were diagnosed with at least one of the factors for the development of a cardiovascular event: obesity, high cholesterol and triglycerides, hypertension, diabetes mellitus and metabolic syndrome. The first section presents the results of the translation, adaptation and search for evidence based on internal structure and relationship with external variables of self-efficacy to regulate exercise. The Kappa test, made to determine the degree of agreement about the final version of the instrument, showed itself a good agreement between evaluators judges (k = 0500) and exploratory factor analysis presented a single factor. The scale presented a good accuracy verified by the internal consistency coefficient ( = 0.97). For analysis of predictive validity, it was considered part of the sample 75 subjects who started and finished a program of Lifestyle Change (MERC). Multiple linear regression demonstrated the predictive power of the total score of the instrument on increasing the Maximum Oxygen Consumption (VO2 max) measured at the end of the program (p> 0.05, = 1.47). Moreover, it was confirmed a quasi-experimental validity by the variability of scale scores during the program, as well as the positive and significant correlation between the initial and final scores of the instrument (p> 0.05). The second section presents the results of psychometric evidence of self-efficacy to regulate Eating Habits, whose final Portuguese version had a moderate level of agreement between evaluators judges (k = 0492). Exploratory factor analysis grouped the items into three factors that can cause a relapse compared to healthy diet: social situations, feelings and physical states and situations that trigger cravings. Excellent accuracy was found through internal consistency coefficient Cronbach's alpha ( = 0.96). It was found quasi-experimental validity using the same sample and statistical technique of the first article (p> 0.05). Bandura's instruments are valid measures to evaluate selfefficacy to regulate eating habits and exercise among Brazilians with cardiovascular risk and therefore it can be important tools in programs aimed at adherence to healthy habits. / Doen?as cardiovasculares s?o a principal causa de morte no mundo e sua preven??o e tratamento n?o medicamentoso depende de uma mudan?a no estilo que vida que envolve ades?o a uma dieta saud?vel aliada a pr?tica regular de exerc?cio f?sico. A manuten??o desses h?bitos implica em uma motiva??o para qual a auto-efic?cia constitui um importante moderador. Para estabelecer essas rela??es s?o necess?rias medidas precisas, por isso Bandura desenvolveu escalas que avaliam o grau de confian?a em manter uma dieta e rotina de exerc?cio f?sico mesmo diante de situa??es que podem dificultar a manuten??o destes h?bitos. Este estudo se prop?s a traduzir, realizar adapta??o sem?ntica e buscar evid?ncias psicom?tricas das escalas Selfefficacy to Regulate Exercise e Self-efficacy to Regulate Eating Habits. Participaram 303 sujeitos, 113 do sexo masculino e 190 do sexo feminino que foram diagnosticados com no m?nimo um dos fatores para o desenvolvimento de um evento cardiovascular: obesidade, colesterol e triglicer?deos alterados, hipertens?o, diabetes mellitus e s?ndrome metab?lica. A primeira se??o traz os resultados da tradu??o, adapta??o e busca de evid?ncias com base na estrutura interna e na rela??o com vari?veis externas da Self-efficacy to regulate exercise. O teste Kappa, realizado para verificar o grau de concord?ncia quanto ? vers?o final do instrumento, revelou uma boa concord?ncia entre os ju?zes avaliadores (k=0.500) e a an?lise fatorial explorat?ria apresentou um ?nico fator. A escala apresentou uma boa precis?o constatada atrav?s do coeficiente de consist?ncia interna alpha de Cronbach ( =0.97). Para an?lise de validade preditiva, considerou-se parte da amostra 75 sujeitos que iniciaram e terminaram um programa de Mudan?a de Estilo de Vida (MERC). A regress?o linear m?ltipla demonstrou o poder preditivo do escore total do instrumento sobre o aumento do Consumo M?ximo de Oxig?nio (VO2 m?x) medido nos participantes ao final do programa (p>0.05; =1.47). Al?m disso, foi confirmada validade quase experimental atrav?s da variabilidade dos escores da escala durante o programa, bem como a correla??o positiva e significativa entre os escores iniciais e finais do instrumento (p>0.05). O estudo apresentado na segunda se??o traz os resultados de evid?ncias psicom?tricas da Self-efficacy to regulate Eating Habits, cuja vers?o final em portugu?s teve um n?vel moderado de concord?ncia entre ju?zes avaliadores (k=0.492). A an?lise fatorial explorat?ria agrupou os itens em 3 fatores que podem provocar uma reca?da em rela??o ? dieta saud?vel: situa??es sociais; sentimentos e estados f?sicos e situa??es que provocam fissura. Uma excelente precis?o foi encontrada atrav?s do coeficiente de consist?ncia interna alpha de Cronbach ( =0.96). Foi constatado evid?ncia de validade quase experimental, utilizando a mesma amostra e t?cnica estat?stica do primeiro artigo (p>0.05). Os instrumentos de Bandura s?o medidas v?lidas para avaliar auto-efic?cia para regular h?bito alimentar e exerc?cio f?sico em brasileiros com risco cardiovascular e por isso podem ser importantes ferramentas em programas que visem ? ades?o a h?bitos saud?veis.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2018-01-16T19:14:42Z No. of bitstreams: 1 VictorAraujoFerreiraMatos_DISSERT.pdf: 1450996 bytes, checksum: e18c336aa8ee5aeeb4bcf215b7398c7d (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2018-01-22T12:42:58Z (GMT) No. of bitstreams: 1 VictorAraujoFerreiraMatos_DISSERT.pdf: 1450996 bytes, checksum: e18c336aa8ee5aeeb4bcf215b7398c7d (MD5) / Made available in DSpace on 2018-01-22T12:42:58Z (GMT). No. of bitstreams: 1 VictorAraujoFerreiraMatos_DISSERT.pdf: 1450996 bytes, checksum: e18c336aa8ee5aeeb4bcf215b7398c7d (MD5) Previous issue date: 2017-07-10 / Introdu??o: O exerc?cio f?sico ? considerado uma estrat?gia fundamental no tratamento da obesidade por promover aumento no d?ficit cal?rico. Evid?ncias recentes sugerem que o exerc?cio de alta intensidade pode induzir altera??es fisiol?gicas que diminuem o apetite, contribuindo para redu??o da ingest?o cal?rica, fen?meno conhecido como anorexia induzida pelo exerc?cio (AIE). Objetivo: comparar o efeito agudo do exerc?cio intervalado de alta intensidade (EIAI) e exerc?cio cont?nuo de intensidade moderada (ECMI) sobre o consumo energ?tico e percep??o do apetite em homens com obesidade. M?todos: A pesquisa caracterizou-se como um ensaio cl?nico randomizado com delineamento cruzado. Quinze volunt?rios (31,0 ? 6,1 anos, 31,0 ? 6,0 kg/m?, 40,1 ? 2,2% de gordura corporal) foram submetidos a tr?s sess?es experimentais, separadas por sete dias: I) EIAI (10 x 1 min a 90% da frequ?ncia card?aca m?xima [FCm?x] + 1 min recupera??o ativa), II) ECMI (20 min a 70% da FCm?x) e III) Controle (sem exerc?cio). Uma refei??o padronizada foi oferecida 60 min antes de cada sess?o. A percep??o subjetiva do apetite (fome, saciedade, plenitude e perspectiva de consumo alimentar) foi avaliada por meio de uma escala visual anal?gica (EVA) em tr?s momentos: 1) pr?-sess?o, 2) p?s-sess?o e 3) uma hora ap?s sess?o. O consumo alimentar ad libitum foi analisado uma hora ap?s as sess?es experimentais e controle, por meio de registro pesado e o consumo alimentar ao longo do dia da sess?o (24 h) foi avaliado por meio de um registro alimentar estimado. A ANOVA two-way com medidas repetidas foi utilizada para analisar poss?veis diferen?as entre as condi??es e momentos na percep??o do apetite e uma ANOVA de medidas repetidas para analisar as diferen?as entre as condi??es no consumo alimentar ad libitum e 24 h. Resultados: N?o houve diferen?as significativas na percep??o de fome [F(1,3, 17,5)=0,00, p=0,972], saciedade [F(1,3, 17,5)=0,00, p=0,972], plenitude [F(2, 28)=0,13, p=0,876] e perspectiva de consumo [F(2, 28)=0,76, p=0,476] entre as condi??es, bem como n?o foram identificadas diferen?as significativas no consumo energ?tico na refei??o ad libitum: CON (674,5 ? 252,1), ECMI (666,7? 213,8) e EIAI (689,6? 263,8kcal) [F (2, 28)=0,13, p=0,877] e ao longo do dia da sess?o: CON (2857,6 ? 867,2), ECMI (2608,5? 595) e EIAI (2556,1? 489,5kcal) [F (2, 28) = 1,54, p=0,233]. Conclus?o: Uma sess?o de EIAI e ECMI n?o modificou o apetite e o consumo energ?tico ap?s 60 min e ao longo do dia em homens com obesidade. / Introduction: Physical exercise is considered a fundamental strategy in the treatment of obesity by promoting increase in the caloric deficit. Recent evidence suggests that high-intensity exercise can induce physiological changes that suppress appetite, decreasing caloric intake, a phenomenon known as exercise-induced anorexia (EIA). Objective: compare the acute effect of high intensity interval exercise (HIIE) and continuous moderate intensity exercise (ECM) on energy intake and appetite perception in obese men. Methods: The study was characterized as a randomized clinical trial in cross-over design. Fifteen volunteers (31.0 ? 6.1 years, 31.0 ? 6.0 kg/ m?, 40.1 ? 2.2% body fat) underwent three experimental sessions, seven days apart: I) HIIE ( 10x 1 min at 90% of maximal heart rate [HRmax] + 1 min active recovery), II) ECM (20min to 70% of HRmax) and III) Control (without exercise). A standardized meal was offered 60 min before each session. Appetite perception (hunger, satiety, fullness and perspective food consumption) were evaluated through a visual analogue scale (VAS) in three moments: 1) Pre-session, 2) Post-session and 3) one hour after session. Energy intake was assessed one hour after session with an ad libitum meal and the consumption throughout the day (24hrs) was analyzed with a estimated food record. ANOVA Two-way with repeated measures was used to analyze the differences between conditions and moments on appetite perception and ANOVA with repeated measures to assess the differences between conditions on energy intake in ad libitum and 24hrs. Results: There were no significant differences on hunger [F (1.3, 17.5) = 0.00, p = 0.972], satiety [F (1.3, 17.5) = 0.00, p = 0.972], fullness [F (2, 28) = 0.13, p = 0.876] and prospective food consumption [F (2, 28) = 0.76, p = 0.476] between conditions. As well as no significant differences on energy intake were observed during ad libitum meal: CON (674,5 ? 252,1), ECM (666,7? 213,8) e HIIE (689,6? 263,8kcal) [F (2, 28) = 0.13, p = 0.877] and throughout the day CON (2857,6 ? 867,2), ECM (2608,5? 595) e HIIE (2556,1? 489,5kcal) [F (2, 28) = 1.54, p = 0.233].Conclusion: A single session of HIIE and ECM did not modified appetite and energy intake 60 min after and during the day following exercise in obese man.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-08-29T19:55:03Z No. of bitstreams: 1 RicardoDiasDeAndrade_DISSERT.pdf: 1416010 bytes, checksum: 12bf51d53442ec4aacf466b8f71ba103 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-09-05T21:40:40Z (GMT) No. of bitstreams: 1 RicardoDiasDeAndrade_DISSERT.pdf: 1416010 bytes, checksum: 12bf51d53442ec4aacf466b8f71ba103 (MD5) / Made available in DSpace on 2016-09-05T21:40:40Z (GMT). No. of bitstreams: 1 RicardoDiasDeAndrade_DISSERT.pdf: 1416010 bytes, checksum: 12bf51d53442ec4aacf466b8f71ba103 (MD5) Previous issue date: 2016-02-26 / Introdu??o: O controle da infec??o pelo HIV atrav?s da TARV, acarretou em diversos efeitos adversos as pessoas vivendo com HIV/Aids (PVHA), como as s?ndromes lipodistr?fica e de wasting. O treinamento f?sico tem sido indicado como forma de retard?-los ou ameniz?-los, os estudos com treinamento f?sico para PVHA t?m mostrado efeitos positivos sobre o controle auton?mico card?aco, composi??o corporal, for?a muscular e na capacidade cardiorrespirat?ria. M?todos: Sete PVHA, do sexo masculino, sob uso da TARV, foram submetidas a uma interven??o com treinamento concorrente durante 18 semanas. O treinamento resistido teve caracter?stica de periodiza??o ondulat?ria, e o treinamento aer?bio prescrito em intensidade leve e de forma linear. O controle auton?mico card?aco foi avaliado pela variabilidade da frequ?ncia card?aca atrav?s dos dom?nios da frequ?ncia (HF, LF e a raz?o LF/HF). Foi aplicado o teste de caminhada de seis minutos para a avalia??o da capacidade cardiorrespirat?ria e do desempenho neuromuscular. Para a avalia??o da for?a muscular foi utilizado o m?todo da tonelagem absoluta, calculada a cada microciclo e mesociclo. As vari?veis antropom?tricas foram analisadas por segmento corporal, sendo obtidas a massa gorda total, do tronco e dos membros superiores e inferiores, al?m da massa corporal e IMC.A an?lise estat?stica foi realizada atrav?s do c?lculo do tamanho do efeito (d de Cohen), exceto para a an?lise da tonelagem absoluta, que foi analisada atrav?s do teste ANOVA one-way, com post hoc de scheffe. Resultados: Foram encontrados tamanhos de efeito alto (d>0,80) para a an?lise da variabilidade da frequ?ncia card?aca para as vari?veis LF e HF, mas n?o para a raz?o LF/HF, ap?s 18 semanas. Tamb?m foram encontrados efeitos moderados (d>0,50) ou fracos (d>0,20) para a composi??o corporal e no desempenho cardiorrespirat?rio. Al?m de diferen?as significativas para a for?a muscular a partir do 4? mesociclo. Conclus?o: O treinamento concorrente induziu efeitos positivos no controle auton?mico card?aco, na composi??o corporal, no desempenho cardiorrespirat?rio e na for?a muscular, assim, a prescri??o de treinamentos com varia??es de cargas, como aplicado neste estudo, deve ser indicado como forma de interven??o n?o medicamentosa para PVHA. / The control of HIV infection by HAART, brought a many of adverse effects to people living with HIV/Aids (PLHA), as a lipodystrophy and wasting syndromes. The physical training has been indicated as means to delay or soften then, the studies with physical training to PLHA have been showed positive effects on cardiac autonomic control, body composition, muscular strength and cardiorespiratory fitness. Seven PLHA, male and under HAART use, Underwent a concurrent training protocol during 18 weeks. The resistance training has an ondulatory periodization, and the aerobic training was conducted in low intensity and linear model. The cardiac autonomic control was evaluated by heart rate variability, through frequency domains (LF, HF and LF/HF ratio). Was applied the six minute walking test evaluate the cardiorespiratory fitness and neuromuscular performance. For the muscular strength evaluation was used the absolute tonnage method, calculated for each microcycle and mesocycle. The anthropometric variables were analyzed for each body segment, being get the total fat mass, trunk and the upper and lower limbs, further body mass and BMI. The statistical analyze was conducted by effect size formula (Cohen?s d), except the absolute tonnage, that was analyzed by ANOVA one-way test, with scheffe post hoc. Were found high effect sizes (d<0,80) to analyze the heart rate variability to the LF and HF variables, but not to LF/HF ratio, after 18 weeks. Also were found moderate (d>0,50) and lower (d>0,20) effect size to body composition and cardiorespiratory fitness. Further the significant difference in muscular strength since fourth mesocycle. The concurrent training induced positive effects on cardiac autonomic control, body composition, cardiorespiratory fitness and the muscular strength, so, the training prescription with load variations, as applied in this study, have be indicated as non-medicine intervention to PLHA.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-08-29T21:07:48Z No. of bitstreams: 1 AlvaroHermanoDaSilva_DISSERT.pdf: 3182783 bytes, checksum: ae17c4e3027437749cc92a8ceaacdc67 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-09-06T20:59:32Z (GMT) No. of bitstreams: 1 AlvaroHermanoDaSilva_DISSERT.pdf: 3182783 bytes, checksum: ae17c4e3027437749cc92a8ceaacdc67 (MD5) / Made available in DSpace on 2016-09-06T20:59:32Z (GMT). No. of bitstreams: 1 AlvaroHermanoDaSilva_DISSERT.pdf: 3182783 bytes, checksum: ae17c4e3027437749cc92a8ceaacdc67 (MD5) Previous issue date: 2016-04-25 / Para alunos que ingressam no primeiro ano de um curso t?cnico integrado, a matem?tica ? uma das disciplinas de dif?cil entendimento. Fatores como falta de aten??o, problemas com interpreta??o de texto e problemas no aprendizado no ensino fundamental, colaboram com as reprova??es na disciplina, gerando um aumento no desest?mulo do aluno no curso. Com base em relatos dos professores da disciplina de matem?tica feitos ao setor pedag?gico da escola sobre as dificuldades desses alunos em resolver as atividades trabalhadas em sala de aula e ap?s a realiza??o de entrevistas com um grupo de alunos, os referidos fatores de dificuldade foram identificados e poss?veis solu??es foram tra?adas. Uma delas ? a implementa??o de um jogo digital, a ser trabalhado no ambiente escolar, que proporcione o exerc?cio da matem?tica fundamental, como forma de trabalhar aspectos cognitivos e o conhecimento dos conte?dos da disciplina, gerando dados sobre o desempenho do jogador, proporcionando um feedback ao professor sobre dificuldades e/ou facilidades na resolu??o das quest?es. Este trabalho apresenta a proposta de jogo concebida. / For students who start their first High School year in a technical integrated course, Mathematics is a hard understanding subject. Based on teachers? reports to the pedagogical office stating the difficulties from students to resolve activities explained in class and after interviewing a group of students, this work identified reasons such as lack of attention/focus, difficulties on reading the texts and understanding the studied background, troubles on basic mathematical operations from elementary school. Thus, possible solutions were outlined. One option is the implementation of a digital game to be worked at school. This game provides the exercising of fundamental mathematical operations in a way to enhance cognitive aspects and the knowledge about the contents of the subject. It eventually provides a teacher?s feedback about the difficulties or facilities to resolve the questions the game presents. This work presents the proposal of the conceived game.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2014-12-18T13:21:35Z No. of bitstreams: 2 sueli _ferreira_fonseca.PDF: 1277078 bytes, checksum: c3e25c025db3373add587a848bee3c7d (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2014-12-18T17:55:12Z (GMT) No. of bitstreams: 2 sueli _ferreira_fonseca.PDF: 1277078 bytes, checksum: c3e25c025db3373add587a848bee3c7d (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2014-12-18T17:59:39Z (GMT) No. of bitstreams: 2 sueli _ferreira_fonseca.PDF: 1277078 bytes, checksum: c3e25c025db3373add587a848bee3c7d (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) / Made available in DSpace on 2014-12-18T17:59:39Z (GMT). No. of bitstreams: 2 sueli _ferreira_fonseca.PDF: 1277078 bytes, checksum: c3e25c025db3373add587a848bee3c7d (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) Previous issue date: 2014 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes) / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / A hipertens?o arterial sist?mica essencial parece estar associada com hipertonia simp?tica dependente da atividade colin?rgica central. Dessa forma, hipertensos poderiam apresentar respostas de dissipa??o de calor aprimoradas, especialmente durante a recupera??o do exerc?cio f?sico moderado realizado sob condi??o de estresse t?rmico. Diante disso, o objetivo do estudo foi avaliar as respostas termorregulat?rias de sujeitos hipertensos durante e na recupera??o de exerc?cio f?sico de intensidade moderada realizado em ambiente quente. Para tanto, oito hipertensos essenciais (H) e oito normotensos (N) (idade: 46,5?1,3 e 45,6?1,4 anos; ?ndice de massa corporal: 25,8?0,8 e 25,6?0,6 kg/m2; press?o arterial m?dia: 98,0?2,8 e 86,0?2,3 mmHg, respectivamente) permaneceram na c?mara ambiental (38?C e 60% umidade relativa do ar) durante 2h e 30 minutos (30 minutos em repouso, 1h de exerc?cio na esteira (50% VO2pico) e 1h em recupera??o do exerc?cio). Temperaturas da pele e corporal interna, frequ?ncia card?aca e press?o arterial foram mensuradas. C?lculos de produ??o de calor, taxa de ac?mulo de calor, temperatura corporal, troca de calor por radia??o, convec??o, e atrav?s do trato respirat?rio e suor evaporado foram realizados a partir das vari?veis coletadas. Como resultados, a press?o arterial m?dia dos hipertensos foi maior do que dos normotensos durante todo o protocolo experimental (p < 0,05). Apesar dos par?metros termorregulat?rios avaliados n?o terem sido diferentes entre grupos hipertensos e normotensos em repouso e durante o exerc?cio f?sico no calor, os hipertensos apresentaram menor quantidade de calor acumulado (H: -24,23 ? 3,39 W/m?, N: -13,63 ? 2,24 W/m?, p = 0,03), maior varia??o na temperatura corporal (H: -0,62 ? 0,05 ?C, N: -0,35? 0,12 ?C, p = 0,03) e maior quantidade de suor evaporado (H: -106,1 ? 4,59 W/m?, N: -91,15 ? 3,24 W/m?, p = 0,01) no per?odo de recupera??o p?s-exerc?cio. Al?m disso, a quantidade de suor evaporado relacionou-se com calor acumulado (r = 0,82, p < 0,001) e com a varia??o da temperatura corporal durante a recupera??o p?s-exerc?cio f?sico (r = 0,82, p < 0,001). Concluindo, indiv?duos hipertensos essenciais, em uso dos medicamentos iECA e diur?ticos, apresentam dissipa??o de calor acumulado aprimorada, por meio da evapora??o do suor e, consequentemente, maior resfriamento corporal durante a recupera??o de exerc?cio f?sico de intensidade moderado em ambiente quente. Methods: A total of 8 essential hypertensive (H) and 8 normotensive participants (N) (age: 46.5 ? 1.3 and 45.6 ? 1.4 years, BMI: 25.8 ? 0.8 and 25.6 ? 0.6 kg/m2, mean arterial pressure: 98.0 ? 2.8 and 86.0 ? 2.3 mmHg, respectively) remained in the environmental chamber (38 ?C and 60 % relative humidity) for 2 hours and 30 minutes (30 min at rest, 1 h of treadmill exercise at 50 % of VO2max and 1 h at rest during recovery exercise). Skin and core temperatures, heart rate and blood pressure were measured. Calculations of heat production, heat storage, mean body temperature, heat exchange by radiation, convection and evaporated sweat were performed from the collected variables. Results: The mean blood pressure of the hypertensive subjects was higher than of the normotensive participants throughout the experimental protocol (p < 0.05). Although the thermoregulatory parameters evaluated did not differ between groups at rest and during exercise, the hypertensive subjects had lower amounts of heat storage (H: -24.23 ? 3.39 W/m?, N: -13.63 ? 2,2.4 W/m?, p = 0.03), greater variations in body temperature (H: -0.62 ? 0.05 ?C, N: -0.35? 0.12 ?C, p = 0.03), and a greater amount of evaporated sweat (H: -106.1 ? 4.59 W/m?, N: -91.15 ? 3.24 W/m?, p = 0.01) during the recovery period. Furthermore, the amount of evaporated sweat correlated with heat storage (r = -0.82; p < 0.001) and with the variation in mean body temperature during the recovery period (r = -0.82; p < 0.001). Conclusion: Essential hypertensive participants present with improved sweat evaporation and greater heat dissipation and body cooling during recovery from moderate-intensity exercise performed in the heat. / Disserta??o (Mestrado) ? Programa Multic?ntrico de P?s-gradua??o em Ci?ncias Fisiol?gicas, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2014. / ABSTRACT Purpose: The systemic arterial hypertension is associated with sympathetic hypertonia dependent on central cholinergic activity. Thus, it is believed that hypertensive individuals have an enhanced response of heat dissipation, especially during recovery from moderate-intensity exercise performed under heat stress conditions. Thus, the aim of this study was to examine the thermoregulatory responses of hypertensive subjects during and after (recovery period) moderate-intensity exercise performed in the heat. Methods: A total of 8 essential hypertensive (H) and 8 normotensive participants (N) (age: 46.5 ? 1.3 and 45.6 ? 1.4 years, BMI: 25.8 ? 0.8 and 25.6 ? 0.6 kg/m2, mean arterial pressure: 98.0 ? 2.8 and 86.0 ? 2.3 mmHg, respectively) remained in the environmental chamber (38 ?C and 60 % relative humidity) for 2 hours and 30 minutes (30 min at rest, 1 h of treadmill exercise at 50 % of VO2max and 1 h at rest during recovery exercise). Skin and core temperatures, heart rate and blood pressure were measured. Calculations of heat production, heat storage, mean body temperature, heat exchange by radiation, convection and evaporated sweat were performed from the collected variables. Results: The mean blood pressure of the hypertensive subjects was higher than of the normotensive participants throughout the experimental protocol (p < 0.05). Although the thermoregulatory parameters evaluated did not differ between groups at rest and during exercise, the hypertensive subjects had lower amounts of heat storage (H: -24.23 ? 3.39 W/m?, N: -13.63 ? 2,2.4 W/m?, p = 0.03), greater variations in body temperature (H: -0.62 ? 0.05 ?C, N: -0.35? 0.12 ?C, p = 0.03), and a greater amount of evaporated sweat (H: -106.1 ? 4.59 W/m?, N: -91.15 ? 3.24 W/m?, p = 0.01) during the recovery period. Furthermore, the amount of evaporated sweat correlated with heat storage (r = -0.82; p < 0.001) and with the variation in mean body temperature during the recovery period (r = -0.82; p < 0.001). Conclusion: Essential hypertensive participants present with improved sweat evaporation and greater heat dissipation and body cooling during recovery from moderate-intensity exercise performed in the heat. Methods: A total of 8 essential hypertensive (H) and 8 normotensive participants (N) (age: 46.5 ? 1.3 and 45.6 ? 1.4 years, BMI: 25.8 ? 0.8 and 25.6 ? 0.6 kg/m2, mean arterial pressure: 98.0 ? 2.8 and 86.0 ? 2.3 mmHg, respectively) remained in the environmental chamber (38 ?C and 60 % relative humidity) for 2 hours and 30 minutes (30 min at rest, 1 h of treadmill exercise at 50 % of VO2max and 1 h at rest during recovery exercise). Skin and core temperatures, heart rate and blood pressure were measured. Calculations of heat production, heat storage, mean body temperature, heat exchange by radiation, convection and evaporated sweat were performed from the collected variables. Results: The mean blood pressure of the hypertensive subjects was higher than of the normotensive participants throughout the experimental protocol (p < 0.05). Although the thermoregulatory parameters evaluated did not differ between groups at rest and during exercise, the hypertensive subjects had lower amounts of heat storage (H: -24.23 ? 3.39 W/m?, N: -13.63 ? 2,2.4 W/m?, p = 0.03), greater variations in body temperature (H: -0.62 ? 0.05 ?C, N: -0.35? 0.12 ?C, p = 0.03), and a greater amount of evaporated sweat (H: -106.1 ? 4.59 W/m?, N: -91.15 ? 3.24 W/m?, p = 0.01) during the recovery period. Furthermore, the amount of evaporated sweat correlated with heat storage (r = -0.82; p < 0.001) and with the variation in mean body temperature during the recovery period (r = -0.82; p < 0.001). Conclusion: Essential hypertensive participants present with improved sweat evaporation and greater heat dissipation and body cooling during recovery from moderate-intensity exercise performed in the heat.

Submitted by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2018-07-06T16:35:49Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) sueli_ferreira_fonseca.pdf: 2207045 bytes, checksum: cbbd1940c41e5fff7fb9ea96ff6381c6 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2018-07-18T13:14:36Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) sueli_ferreira_fonseca.pdf: 2207045 bytes, checksum: cbbd1940c41e5fff7fb9ea96ff6381c6 (MD5) / Made available in DSpace on 2018-07-18T13:14:36Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) sueli_ferreira_fonseca.pdf: 2207045 bytes, checksum: cbbd1940c41e5fff7fb9ea96ff6381c6 (MD5) Previous issue date: 2017 / Existem evid?ncias que a estimula??o colin?rgica central aumenta a dissipa??o de calor em ratos normotensos como consequ?ncia de altera??es cardiovasculares via modula??o da atividade barorreflexa. No entanto, n?o h? dados publicados sobre o envolvimento do sistema colin?rgico central nestas respostas em modelo experimental que apresenta altera??o da sensibilidade dos barorreceptores e d?ficit termorregulat?rio. Assim, o objetivo do presente estudo foi verificar o envolvimento do sistema colin?rgico central na modula??o das repostas cardiovasculares e termorregulat?rias durante o repouso e exerc?cio f?sico em ratos espontaneamente hipertensos (SHR). Ratos Wistar machos (n = 33) e SHR (n = 33) foram implantados com uma c?nula intracerebroventricular (icv) para inje??es de 2 ?L de fisostigmina (fis) ou solu??o salina (sal). Temperaturas da cauda (Tcauda) e corporal interna (Tint), press?o arterial sist?lica (PAS), frequ?ncia card?aca (FC) e taxa metab?lica foram registradas durante os 60 minutos em que os ratos permaneceram em repouso, bem como durante o exerc?cio f?sico at? a fadiga ap?s inje??es icv randomizadas. Na situa??o repouso, o tratamento com fis iniciou uma sucess?o de respostas cardiovasculares e termorregulat?rias que resultaram em aumento da PAS, redu??o da FC e aumento de Tcauda nos grupos Wistar e SHR. A magnitude da ativa??o desses mecanismos foi mais intensa no SHR, afetando a Tint e melhorando a dissipa??o de calor. Durante o exerc?cio f?sico, o tratamento com fis foi capaz de modular as repostas cardiovasculares promovendo aumento significativo da PAS, seguido de bradicardia reflexa em ratos SHR e Wistar. Estas respostas foram mais intensas nos ratos Wistar. N?o houve diferen?a significativa para a Tcauda e Tint no grupo SHR fis em rela??o ao grupo sal. Entretanto, fis impactou positivamente no desempenho f?sico. Em conjunto, esses resultados fornecem evid?ncias que, durante a situa??o de repouso, a estimula??o colin?rgica central modula as repostas termorregulat?rias por meio de mudan?as no sistema cardiovascular de ratos Wistar e SHR, sendo que essas respostas s?o mais acentuadas em ratos SHR impactando na dissipa??o de calor. Durante o exerc?cio f?sico, a administra??o central de fis promove altera??es no sistema cardiovascular de ratos normotensos e hipertensos. Apesar dessas altera??es n?o terem sido suficientes para ajustar as respostas termorregulat?rias em ratos SHR, impactaram positivamente no desempenho f?sico. / Tese (Doutorado) ? Programa Multic?ntrico de P?s-Gradua??o em Ci?ncias Fisiol?gicas, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2017. / There is evidence that central cholinergic stimulation increases heat dissipation in normotensive rats through changes on the cardiovascular system via modulation of baroreceptors function. However, there is no published data regarding the involvement of the central cholinergic system in cardiovascular and thermoregulatory responses in spontaneously hypertensive rats (SHR), which are animals that possess altered baroreceptor sensitivity and thermoregulatory deficit. Therefore, the aim of this study was to verify the involvement of the central cholinergic system in cardiovascular and thermoregulatory adjustments in SHR. Male Wistar (n = 33) and SHR (n = 33) rats were implanted with an intracerebroventricular (icv) cannula for injections of 2 ?L of physostigmine (phy) or saline (sal) solution. Tail (Ttail) and internal body temperatures (Tint), systolic arterial pressure (SAP), heart rate (HR) and metabolic rate were registered during 60 minutes while the animals remained at rest and during exercise until fatigue after randomly receiving the injections. Phy treatment started a succession of cardiovascular and thermoregulatory responses that resulted in increased SAP, reduced HR and increased Ttail in both Wistar and SHR groups. The magnitude of the activation of these mechanisms seems to be more intense in SHR, even affecting the Tint, and improve heat dissipation. During physical exercise, the phy treatment was able to modulate the cardiovascular responses promoting a significant increase of SAP, followed by reflex bradycardia in SHR and Wistar rats. These responses were more intense in Wistar rats. There was no significant difference for Ttail and Tint in the SHR group, however, phy positively impacted the physical performance. Taken together, these results provide evidence that at rest the central cholinergic stimulation modulates thermoregulatory responses through changes in the cardiovascular system of Wistar and SHR rats, and SHR rats presented greater cardiovascular and thermoregulatory responses than normotensive rats after central cholinergic stimulation. During physical exercise the central administration of phy promotes adjustments in the cardiovascular system of normotensive and hypertensive rats. Although these adjustments were not sufficient to pair the thermoregulatory responses in SHR rats, they had a positive impact on physical performance.

Made available in DSpace on 2014-12-17T14:13:39Z (GMT). No. of bitstreams: 1 RandRM_TESE.pdf: 1297937 bytes, checksum: 0f7a6a1fba885f473c658ba94147cfc3 (MD5) Previous issue date: 2011-06-20 / Introdu??o: Os horm?nios estrog?nicos possuem importante papel na defesa contra as esp?cies reativas do oxig?nio, fato que se evidencia na maior incid?ncia de doen?as cardiovasculares e neurodegenerativas ap?s a menopausa. O exerc?cio f?sico melhora as defesas antioxidantes, contudo em altas cargas e em baixas concentra??es de estr?geno possui efeito aditivo ao dano oxidativo. O ?cido &#945;-lip?ico possui uma ampla gama de a??o antioxidante e poderia contribuir para diminui??o do dano nestas condi??es. Objetivo: O objetivo deste estudo ? caracterizar a a??o do ?cido &#945;-lip?ico sobre a adapta??o antioxidante e fun??es reprodutivas de ratas submetidas a nata??o moderada. Material e m?todos: Os animais foram submetidos a nata??o di?ria (1 hora) e sacrificados ap?s 30, 60 e 90 dias. Os animais foram divididos em controles sedent?rios e exercitados; suplementados (?cido &#945;-lip?ico 100mg/Kg/dia) sedent?rios e exercitados e animais ovariectomizados e suplementados com ?cido lip?ico. Avaliou-se diariamente o ciclo estral e os seguintes marcadores de estresse oxidativos foram mensurados em f?gado e sangue: atividade enzim?tica da SOD, GPx e CAT, al?m do SRAT e GSH. Resultados: O protocolo de exerc?cio aumentou a dura??o do ciclo estral no grupo controle exercitado, sobretudo na fase diestral. Neste mesmo grupo, houve diminui??o da lipoperoxida??o com melhora da atividade antioxidante da SOD e GPx. O grupo exercitado e suplementado n?o apresentou altera??o na dura??o do ciclo estral e manteve os benef?cios sobre o sistema antioxidante antes observado nos animais exercitados. A suplementa??o antioxidante juntamente com a nata??o em per?odos superiores a 30 dias, diminuiu o processo de adapta??o antioxidante quando comparado aos animais somente exercitados. Nos animais ovariectomizados, o exerc?cio e a suplementa??o com ?cido lip?ico n?o promoveu adapta??o antioxidante ao contr?rio dos demais grupos. Conclus?o: O aumento na dura??o do ciclo estral e a melhora nos marcadores de estresse oxidativo seriam uma resposta adaptativa frente ao exerc?cio moderado. O ?cido lip?ico impediu a altera??o no ciclo induzida pelo exerc?cio, mas preservou a melhoria no sistema antioxidante. A deple??o estrog?nica provocada pela ovariectomia eleva o potencial de dano oxidativo gerado pelo exerc?cio. A a??o antioxidante do LA na presen?a de estr?geno diminuiu excessivamente o dano oxidativo, comprometendo a adapta??o antioxidante a nata??o. Nos animais ovariectomizados, contudo, o AL promoveu adapta??o antioxidante ao exerc?cio

Made available in DSpace on 2014-12-17T14:13:42Z (GMT). No. of bitstreams: 1 ThemisCMS_DISSERT.pdf: 4641831 bytes, checksum: b53f8d921d5c29ac4f8aaa81c0292d3d (MD5) Previous issue date: 2012-02-27 / This descriptive study aimed to investigate the relationship between expression of immunological (TCD4 +) and virological (viral load) parameters, lipodystrophy syndrome and lifestyle variables of people living with HIV who underwent a program of physicalexercise. Initially, the sample was composed by 17 persons, recorded at the Department of Giselda Trigueiro Hospital Care (GTH), Natal-RN . With the passing of the stages of intervention (physical training program- PTP) the number of participants has changed (17, 9, 8 and 7) as the training phases (I, II, III and IV). Data collected were on total cholesterol, High Density Lipoprotein (HDL) and triglycerides. The % fat (% F), body mass index (BMI), waist-hip ratio (WHR), lean mass (LM), central fat (BF), total (TF) and peripheral (PF), weight and height were used to measure the morphological parameters. For control of variables (TCD4 +, viral load, Triglycerides, Cholesterol, HDL), the information contained in the blood tests every four months were investigated. After Phase I and II, it was used a structured interview. Then sampling was carried out considering the pre-and post-tests 1, 2, 3 and 4 (after 16, 32, 48 and 64 weeks of training, respectively). Daily, the intensity of the work was checked by the scale of perceived exertion for exercises adapted to resistance34. Procedures used were descriptive statistics (dispersion, absolute and relative frequencies, means, standard deviations and minimum and maximum values) as well as Spearman linear correlation adopting a significance level of p &#8804; 0.05. Positive changes were observed for TCD4 + and viral load in all phases of the PTP. For the morphological components, the loss of central subcutaneous fat (CSF) and total subcutaneous fat (TSF) for both sexes and the decrease in % BF among women were the most dramatic results after the training phase I. For men, results were more significant to % F and LM in Phases I and II and peripheral subcutaneous fat (PSF) declined in all phases of the exercise. As for women, results were more expressive for % F and TM in the phases I and II and the PSF decreased in all phases of the exercise. Whereas for women, the waist/hip ratio (WCQ) and 0% F decreased and showed a positive association with triglycerides (WHR r * 0.82, p 0.042, r 0.88 TSF *, p 0.019 and r 1.00 ** CSF, p <0.001) and among men with limb subcutaneous fat (LSF)* r 0.65, p 0.029). The PTP provided improvement in the health, self-esteem and quality of life, proving to be a possible strategy to positively influence the expression of immunological parameters (TCD4 +) and virological (viral load) and morphological components of people living with HIV causing no deleterious effects in these parameters / Este estudo descritivo objetivou verificar a rela??o entre express?o dos par?metros imunol?gicos (TCD4+), virol?gicos (carga viral), s?ndrome lipodistr?fica e vari?veis do estilo de vida de pessoas que vivem com HIV Aids submetidos a um programa de exerc?cio resistido. A amostra, foi composta inicialmente por 17 pessoas, registrados no N?cleo de Atendimento do Hospital Giselda Trigueiro (HGT)/Natal-RN. Com o transcorrer das fases da interven??o (Programa de Exerc?cios Resistidos/PER) o n?mero de participantes se modificou (17, 9, 8 e 7) conforme as fases de treinamento (I, II, III e IV). Foram coletados dados do Colesterol total, HDL e triglicer?deos. O % de gordura (%G), ?ndice de massa corporal (IMC), raz?o cintura-quadril (RCQ), massa magra (MM), gordura central (GC), total (GT) e perif?rica (GP), peso e altura foram utilizados para mensurar os par?metros morfol?gicos. Para controle das vari?veis (TCD4+, CARGA VIRAL, Triglicer?deos, Colesterol, HDL) foram investigadas as informa??es contidas nos exames realizados a cada quatro meses. Foi utilizada a entrevista estruturada ap?s FASE I e II. As coletas foram realizadas considerando o pr? e p?s-testes 1, 2, 3 e 4 (ap?s 16, 32, 48 e 64 semanas de treinamento, respectivamente). A intensidade do trabalho foi verificada diariamente atrav?s da Escala de percep??o de esfor?o adaptada para exerc?cios de resist?ncia34. Foram utilizados procedimentos da estat?stica descritiva (dispers?o, frequ?ncias relativas e absolutas, m?dias, desvios padr?o e valores m?nimos e m?ximos) e a correla??o linear de Spearman adotando-se um nivel de significancia de p&#8804;0,05. Foram observadas mudan?as positivas para TCD4+ e carga viral em todas as fases do PER. Para os componentes morfol?gicos, a perda de gordura subcut?nea central (GSC) e gordura subcut?nea total (GST) para ambos os sexos e a diminui??o do %G entre as mulheres foram os resultados mais expressivos ap?s o treinamento Fase I. Para homens os resultados foram mais expressivos para % G e MM nas Fases I e II e a GSP diminuiu em todas as fases do exerc?cio. J? para mulheres diminuiu a RCQ e %G e apresentou rela??o positiva com o triglicer?deos (RCQ r 0,82*, p 0,042 , GST r 0,88*, p 0,019 e GSC r 1,00**, p <0,001) e entre os homens com gordura subcut?nea dos membros (GSM) r 0,65*, p 0,029). O PER proporcionou melhora no quadro de sa?de, autoestima e qualidade de vida, demonstrando ser uma estrat?gia poss?vel de influenciar positivamente na express?o dos par?metros imunol?gicos (TCD4+), virol?gicos (carga viral) e de componentes morfol?gicos de pessoas vivendo com HIV Aids n?o causando efeitos delet?rios nos referidos par?metros

Made available in DSpace on 2014-12-17T14:13:46Z (GMT). No. of bitstreams: 1 YulaPSFM_TESE.pdf: 2591989 bytes, checksum: 0dea14f7bb1a36f0c3b4c0dfa945b83c (MD5) Previous issue date: 2013-05-09 / A pr?tica regular de exerc?cio f?sico possibilita redu??o dos efeitos das disfun??es hormonais e envelhecimento biol?gico natural que promovem desajustes hemodin?micos, vasculares e m?sculo-esquel?ticos, principalmente na popula??o feminina no per?odo p?s-menopausa. Nesta fase da vida, o exerc?cio aqu?tico representa mais do que uma forma de ajuste funcional, ? uma forma de manuten??o de independ?ncia para as atividades da vida di?ria (AVD s) e melhoria na qualidade de vida. Este estudo teve como objetivo avaliar as modifica??es adquiridas pela pr?tica regular de um programa de exerc?cio aqu?tico concorrente de intensidade moderada no n?vel de ?xido n?trico (ON), no ?ndice de resistividade arterial (IR), no perfil lip?dico, na capacidade funcional e na qualidade de vida de idosas. A amostra foi formada por idosas (60 a 80 anos) selecionadas por randomiza??o, por sorteio simples divididas em grupo controle e grupo de interven??o as quais foram submetidas a um programa de exerc?cios aqu?ticos proposto inicialmente em projeto piloto, por 12 semanas (n=34) e o ensaio cl?nico teve dura??o de 16 semanas (n=40). Foi coletada amostra sangu?nea das idosas e avaliado o perfil lip?dico pelo m?todo enzim?tico com kit Labtest e o ON por medida indireta a partir da concentra??o de nitrito no sobrenadante das c?lulas em cultura em leitor de ELISA. A avalia??o das art?rias car?tidas e vertebrais foi feita utilizando o m?todo de ultra-som Doopler. A capacidade funcional foi avaliada por quatro testes que simulam atividades da vida di?ria que s?o: caminhar 10 metros (C10m), levantar da posi??o sentada (LPS), levantar da cadeira e locomover-se pela casa (LCLC) e o de levantar-se da posi??o dec?bito ventral (LPDV). No estudo piloto foi avaliado o ?ndice geral de autonomia funcional (IG) e a qualidade de vida atrav?s do question?rio WHOQOL-100. Empregou-se a an?lise de vari?ncia (ANOVA) com medidas repetidas nos fatores grupo (GH e GC) e tempo (pr? e p?s-teste) para as compara??es intra e intergrupos nas vari?veis seguida do post hoc de Scheff?. Utilizou-se o teste de correla??o de Pearson e adotado o valor de p<0,05 para a signific?ncia estat?stica. Houve aumento do ON circulante, redu??o nos ?ndices de resistividade arterial, melhoria significativa nos n?veis de colesterol e triglic?rides e ganho na capacidade funcional das idosas ap?s a interven??o. Existiu correla??o inversa entre a resistividade da art?ria vertebral direita (VERTD) e n?veis de ON e entre a VERTD e os n?veis plasm?ticos de HDL, assim como entre estes e o teste C10m nas idosas em estudo. N?o houve modifica??es significativas na qualidade de vida das idosas. Em conclus?o, o programa de exerc?cio proposto foi capaz de oferecer melhorias funcionais, aumentar o n?vel de ?xido n?trico circulante, diminuindo a resist?ncia arterial promovendo modifica??es no perfil lip?dico de idosas