Antonio de Carvalho Nogueira

Federal University of Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil

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Publications (7)1.7 Total impact

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    ABSTRACT: A quantificação da sobrecarga cardiovascular pode ser determinada pela freqüência cardíaca (FC), pela pressão arterial (PA) e pelo duplo produto (DP). Por conta disso, esta investigação tem por objetivo. Comparar a sobrecarga cardiovascular, a partir das respostas agudas da PA, da FC e do DP em três fases investigativas. Para isso, foi necessário aplicar em sete homens com idade média de 26,7 ± 0,1 ano: medidas de PA e FC sem treino (fase controle). 48 horas depois, medidas de PA e FC pré e pós-treino de força com três séries de 10 RM, utilizando as ações musculares concêntricas e excêntricas combinadas (fase combinada), e 72 horas depois, medidas de PA e FC pré e pós-treino de força com três séries de 10 RM, utilizando as ações excêntricas isoladas absolutas (fase excêntrica). A estatística utilizada, ANOVA de medidas repetidas, para as médias da PA sistólica (PAS) e diastólica (PAD), da FC e do DP, entre as citadas fases, mostrou que as variáveis estudadas na fase controle são significativamente inferiores às outras duas fases (p = 0,000 e 0,000). Contudo, as médias da PAS, da PAD e da FC, obtidas na fase excêntrica, apesar de serem menores, não são significativamente inferiores às obtidas na fase combinada (p = 0,316, 0,831 e 0,066) respectivamente. No entanto, o DP obtido com as ações musculares excêntricas isoladas absolutas é significativamente inferior ao das ações musculares combinadas (p = 0,027). Assim, é possível afirmar que as ações musculares excêntricas isoladas absolutas podem ser mais adequadas, quando durante um treino de força, houver necessidade de menor sobrecarga cardiovascular.
    Full-text · Article · May 2013 · Fitness & Performance Journal
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    ABSTRACT: Purpose. The purpose of this study was to compare the effects of concentric with eccentric muscle actions on strength gains. Methods. Forty-two untrained men were randomly divided into three groups: the concentric experimental (CE), the eccentric experimental (EE) and a control (C). The CE group performed only concentric muscle actions at 80% of one repetition maximum (1 RM) and the EE group performed only eccentric muscle actions at 120% of 1 RM. Both groups trained by performing three sets of 10-12 repetitions for eight weeks of biceps curl (BC) and bench press (BP) exercises. The C group did not engage in any type of training. Results. Analyses performed within the CE group found that there were significant improvements in muscle strength in the eighth week of BP (Δ % = 26.9%, p = 0.01) and in the fourth and eighth week of BC (Δ % = 22.1%, p = 0.00 and Δ% = 32.1%, p = 0.00, respectively). Analyses of the EE group found that there were significant improvements in muscle strength in the fourth and eighth week of BP (Δ% = 13.7%, p = 0.00 and Δ% = 28.4%, p = 0.00, respectively). Between the two groups (CE versus EE), comparisons showed that the CE group performed significantly better than the EE group in the fourth and eighth week of BC (p = 0.00 and p = 0.00, respectively). Conclusions. These findings indicate that those who do not train should perform concentric muscle actions in the first 8 weeks of training in order to generate accelerated strength improvement.
    Full-text · Article · Dec 2011 · Human Movement
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    Antonio de C Nogueira · Rodrigo G S Vale · André L M Gomes · Estélio H M Dantas
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    ABSTRACT: The aim of this study was to compare the effect of concentric with eccentric muscle actions on the resulting level of damage to connective tissues by urinary concentration of hydroxyproline. Twenty-one male volunteers were divided into control group (CG), experimental concentric group (ECG), and experimental eccentric group (EEG). The measures of hydroxyproline were performed at three times: pretest, fourth week, and posttest. Biceps curl and chest press exercises also were performed with three sets of 10 repetitions two times per week for both experimental groups. Analysis of variance (ANOVA) showed a significant difference between pretest of the CG and pretest of the ECG (p = 0.002), and between pretest and posttest for the EEG (p = 0.029). Therefore, this study concluded that the level of damage to the connective tissue is greater when exercises involving eccentric muscle actions are performed. The continuity of training, however might reduce this damage.
    Full-text · Article · Oct 2011 · Research in Sports Medicine An International Journal
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    ABSTRACT: This research was designed to measure the levels 01hydroxyproline (HP) in urine alter the application of two diflerent methods of strength training. Thirty fit, healthy men were randomly divided into two groups: exercise (EG) and control (CG). 80th groups provided urine samples priorto training, although only the EG performed 1 repetition maximum (RM); 5RM and 30RM tests. Alter this, the EG performed three series of 5RM. Alter two hours, urine samples were collected lrom the EG. Sixteen days later, the same pl;.ocedure took place using a 30RM protocol. The HP levels in urine were quantified colorimetrically using a spectrophotometer. Statistically signilicant diflerences in HP values were found only lor the the 5RM training method (e.= -22%, P< 0.05). It was concluded that damage to the conjunctive tissue only too k place with 5RM training, thus confirming that one way 01 avoiding stagnation in the adaptation 01 subjects with certain experience 01 strength training is to use more intense methods. However, in such training protocols, the recovery time between sessions should be greater due to the resulting increase in tissue damage.
    Full-text · Article · Jan 2010
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    ABSTRACT: O presente estudo se propõe a comparar os ganhos do treinamento de três e cinco vezes por semana em resistência de força abdominal. Participaram da pesquisa dois grupos, num total de 26 voluntários (12 indivíduos, 3x/semana e 14, 5x/ semana), com idades variando entre 17 e 30, praticantes de musculação há pelo menos seis meses e sem resposta positiva no Par-Q. Realizou-se um teste de 30 repetições máximas e as cargas foram mantidas durante seis semanas, treinando com três séries de 30 repetições. Ao final, o re-teste permitiu avaliar os ganhos percentuais em relação ao teste. O treinamento provocou melhoras significativas (p < 0,05) no geral e em ambos os grupos isoladamente. Entretanto, os percentuais de ganhos entre teste e re-teste do grupo que treinou três vezes por semana não diferiram significativamente do grupo que treinou cinco vezes. Este estudo conclui que o treinamento de resistência de força provoca ganhos significativos para a musculatura abdominal, porém, treinar cinco vezes por semana não apresenta vantagem em relação ao treinamento de três vezes
    Full-text · Article · Feb 2004 · Fitness & Performance Journal

  • No preview · Article · Jan 2004 · Fitness & Performance Journal

  • No preview · Article · Jan 2004 · Fitness & Performance Journal