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Exercise training has an important role in the prevention and treatment of hypertension, but its effects on the early metabolic and hemodynamic abnormalities observed in normotensive offspring of hypertensive parents (FH+) have not been studied. We compared high-intensity interval (aerobic interval training, AIT) and moderate-intensity continuous exercise training (CMT) with regard to hemodynamic, metabolic and hormonal variables in FH+ subjects. Forty-four healthy FH+ women (25.0+/-4.4 years) randomized to control (ConFH+) or to a three times per week equal-volume AIT (80-90% of VO(2MAX)) or CMT (50-60% of VO(2MAX)) regimen, and 15 healthy women with normotensive parents (ConFH-; 25.3+/-3.1 years) had their hemodynamic, metabolic and hormonal variables analyzed at baseline and after 16 weeks of follow-up. Ambulatorial blood pressure (ABP), glucose and cholesterol levels were similar among all groups, but the FH+ groups showed higher insulin, insulin sensitivity, carotid-femoral pulse wave velocity (PWV), norepinephrine and endothelin-1 (ET-1) levels and lower nitrite/ nitrate (NOx) levels than ConFH- subjects. AIT and CMT were equally effective in improving ABP (P<0.05), insulin and insulin sensitivity (P<0.001); however, AIT was superior in improving cardiorespiratory fitness (15 vs. 8%; P<0.05), PWV (P<0.01), and BP, norepinephrine, ET-1 and NOx response to exercise (P<0.05). Exercise intensity was an important factor in improving cardiorespiratory fitness and reversing hemodynamic, metabolic and hormonal alterations involved in the pathophysiology of hypertension. These findings may have important implications for the exercise training programs used for the prevention of inherited hypertensive disorder. Hypertension Research (2010) 33, 836-843; doi:10.1038/hr.2010.72; published online 7 May 2010

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Our purpose was to examine possible influences of age on resistance exercise (RE) intensity progression in men. Twenty-four men, divided in young sedentary (YS; n = 10; 25.9 +/- 3.7 years), older sedentary (OS; n = 7; 67.4 +/- 5.2 years), and older runners (OR; n = 7; 71.3 +/- 3.0 years), underwent a 2 times-a-week RE program for 13 weeks. Muscle strength was assessed before and after training by 1-repetition maximum test. RE workloads were recorded for each exercise session, and increases of 5-10% were made whenever adaptation occurred. Muscle strength improved similarly in all groups after RE (P < 0.001). Relative RE intensity progression was not significantly different between YS and OS, except for a greater increase in calf raise relative workload observed in YS (P < 0.05). In contrast, OR displayed greater relative workload increase in 7 and 6 exercises than YS and OS, respectively (P < 0.05). The RE was safe as no injuries or major muscle pain were observed in either group. These results suggest that healthy sedentary older men are capable to exercise and increase RE intensity in the same way as young men, while physically active older men are capable to increase RE intensity in greater way than sedentary young and older men.

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Study design: Single-blind randomized, controlled clinical study. Objectives: To evaluate, using kinematic gait analysis, the results obtained from gait training on a treadmill with body weight support versus those obtained with conventional gait training and physiotherapy. Setting: Thirty patients with sequelae from traumatic incomplete spinal cord injuries at least 12 months earlier; patients were able to walk and were classified according to motor function as ASIA (American Spinal Injury Association) impairment scale C or D. Methods: Patients were divided randomly into two groups of 15 patients by the drawing of opaque envelopes: group A (weight support) and group B (conventional). After an initial assessment, both groups underwent 30 sessions of gait training. Sessions occurred twice a week, lasted for 30min each and continued for four months. All of the patients were evaluated by a single blinded examiner using movement analysis to measure angular and linear kinematic gait parameters. Six patients (three from group A and three from group B) were excluded because they attended fewer than 85% of the training sessions. Results: There were no statistically significant differences in intra-group comparisons among the spatial-temporal variables in group B. In group A, the following significant differences in the studied spatial-temporal variables were observed: increases in velocity, distance, cadence, step length, swing phase and gait cycle duration, in addition to a reduction in stance phase. There were also no significant differences in intra-group comparisons among the angular variables in group B. However, group A achieved significant improvements in maximum hip extension and plantar flexion during stance. Conclusion: Gait training with body weight support was more effective than conventional physiotherapy for improving the spatial-temporal and kinematic gait parameters among patients with incomplete spinal cord injuries. Spinal Cord (2011) 49, 1001-1007; doi:10.1038/sc.2011.37; published online 3 May 2011

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Ciolac, EG, Brech, GC, and Greve, JMD. Age does not affect exercise intensity progression among women. J Strength Cond Res 24(11): 3023-3031, 2010-It has been recommended that the intensity of exercise training (ET) should progress slowly with lower increments in older than in young people. However, scientific evidence supporting this recommendation is lacking. Our aim was to examine possible influences of age on exercise intensity progression in healthy women. Seventeen young (29.1 +/- 5.7 years) and 16 older women (64.5 +/- 4.5 years) underwent 13 weeks of ET consisting of cycle ergometry (CE, 65-75% of reserve heart rate), whole-body resistance exercise (RE, 60% of 1 repetition maximum [1RM]), and stretching. Muscle strength was assessed before and after ET by the 1RM. Cycle ergometry and RE workloads were recorded for each exercise session, and increases of 5-10% were made whenever adaptation occurred. Absolute muscle strength after ET improved (p < 0.001) in both groups, and there were no significant differences between groups. Relative exercise intensity progression was not significantly different between groups for RE (Pearson`s correlation = 0.98 +/- 0.01), but it was greater in older women for CE (p = 0.047). The ET was safe because no injuries or major muscle pain was observed in either group. These results suggest that healthy older women are capable of exercising and increasing exercise intensity in the same way as young women.

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Objective: In total knee arthroplasty, the minimally-invasive approach has been claimed to enable earlier rehabilitation because it spares the femoral quadriceps muscle. To check the influence of preserving the extensor apparatus during surgery, the strength of knee extension and flexion muscles was evaluated in patients submitted to total knee arthroplasty with different approaches. Materials and Methods: The values of maximum torque and total work obtained by isokinetic dynamometry six months after surgery were compared for the Minimally invasive surgery group constituted of 12 individuals submitted to total knee arthroplasty by the minimally invasive surgical approach and the Control group, constituted of eight patients submitted to total knee arthroplasty by the transquadricipital approach, between January 2005 and July 2006. Results: Statistical analysis of the absolute values for maximum torque and total work adjusted for body weights did not show differences between both groups. Conclusion: There was no difference in the extension and flexion strength of the knee muscles six months after surgery.

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Este estudo de caso aborda a crise vivida pelo setor de transporte a??reo brasileiro nos anos de 2006 e 2007. Deflagrada por um acidente de vulto, a crise teve como protagonistas os controladores de tr??fego a??reo, que, sob suspeita de falha funcional e comunica????o dif??cil com as autoridades do setor, reagiram por meio de uma estrat??gia de opera????o-padr??o (greve branca). Essa situa????o, somada ?? escassez de pessoal, provocou, de novembro de 2006 at?? meados de 2007, o descontrole operacional dos principais aeroportos do pa??s, com grandes preju??zos aos usu??rios. Um novo acidente a??reo, no decorrer da crise, agravou ainda mais a situa????o do setor, expondo defici??ncias estruturais e profissionais ?? opini??o p??blica brasileira, em uma ??rea at?? ent??o considerada segura. O caso relata as tentativas de equacionamento da crise por parte das autoridades respons??veis pela pol??tica de transporte a??reo, frente ao descontentamento e ??s reivindica????es dos controladores de tr??fego a??reo e ?? indigna????o da sociedade. O objetivo do estudo de caso ?? ilustrar uma situa????o de crise e de processo de negocia????o, tendo sido originalmente utilizado em uma oficina sobre negocia????es no setor p??blico. O caso pode ser utilizado como material de apoio em cursos que abordem, entre outros, os seguintes t??picos: negocia????o, gest??o de crises, comunica????o e planejamento estrat??gico

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O artigo analisa os resultados de uma pesquisa realizada com 1.322 indiv??duos pertencentes ?? Pol??cia Militar de Minas Gerais. ?? luz das discuss??es de Goffman, Foulcalt e Etzioni, buscou-se verificar a inser????o dos servidores na institui????o, sua percep????o quanto ao aparato de controle institucional e os conflitos resultantes da intera????o entre superior e subordinado. Concluiu-se que reformas ocorridas ap??s a eclos??o de greve na institui????o em 1997 ainda s??o t??midas diante do aparato de socializa????o existente e do distanciamento entre oficiais e pra??as. Assim, ?? necess??ria a revis??o dos mecanismos de socializa????o e coer????o, para que a organiza????o policial avance na consecu????o de seus objetivos e d?? respostas efetivas ??s necessidades dos atores envolvidos, a si pr??pria e ?? sociedade.

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Dissertação apresentada para cumprimento dos requisitos necessários à obtenção do grau de Mestre em História Contemporânea.

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Tese apresentada para cumprimento dos requisitos necessários à obtenção do grau de Doutor em História Contemporânea