The effects of low-intensity resistance exercise (RE) combined with blood flow restriction (BFR) on blood pressure (BP) are an important factor to be considered because of the acute responses imposed by training. The aim of this study was to compare the hypotensive effect of RE performed with and without BFR in normotensive young subjects. After 1 repetition maximum (1RM) tests, 24 men (21.79 ± 3.21 years; 1.72 ± 0.06 m; 69.49 ± 9.80 kg) performed the following 4 experimental protocols in a randomized order: (a) high-intensity RE at 80% of 1RM (HI), (b) low-intensity RE at 20% of 1RM (LI), (c) low-intensity RE at 20% of 1RM combined with partial BFR (LI + BFR), and (d) control. Analysis of systolic blood pressure (SBP) and diastolic blood pressure (DBP) was conducted over a 60-minute period. The 3 RE protocols resulted in hypotensive SBP (HI = -3.8%, LI = -3.3%, LI + BFR = -5.5%) responses during the 60 minutes (p ≤ 0.05). The LI + BFR protocol promoted hypotensive (-11.5%) responses in DBP during the 60 minutes (p ≤ 0.05), and both the HI and LI + BFR protocols resulted in mean blood pressure (MBP) hypotension between 30 (-7.0%, -7.7%) and 60 minutes (-3.6%, -8.8%), respectively. In conclusion, postexercise hypotension may occur after all 3 exercise protocols with greater reductions in SBP after HI and LI + BFR, in DBP after LI + BFR, and in MBP after HI and LI + BFR protocols.

The objective of this study was to analyze the effect of supplementation with creatine and glutamine on physical fitness of military police officers. Therefore, an experimental double blind study was developed, with the final sample composed by 32 men randomly distributed into three groups: a group supplemented with creatine (n=10), glutamine (n=10) and a placebo group (n=12) and evaluated in three distinct moments, in an interval of three months (T1, T2 and T3). The physical training had a weekly frequency of 5 sessions × 90 min, including strength exercises, local muscular resistance, flexibility and both aerobic and anaerobic capacity. After analyzing the effect of time, group and interaction (group × time) for measures that indicated the physical capabilities of the subjects, a significant effect of time for the entire variable was identified (p<0,05). However, these differences were not observed when the univaried intragroups and intergroups analysis was performed (p>0,05). In face of the results it was concluded that supplementation with creatine and glutamine showed no ergogenic effect on physical performance in military police officers.

Introdução: Atualmente, os índices do edentulismo diminuíram, embora a preocupação pela reabilitação dentária aumentaram, o que gera foco de estudos sobre as expectativas que essa população procura os serviços dessa área da odontologia. Objetivo: O objetivo deste estudo foi fazer uma revisão de literatura sobre os impactos psicossociais que a estética dentária pode causar na qualidade de vida de sujeitos que são submetidos a próteses convencionais e sobre implantes. Método: Foram selecionados artigos disponíveis na base de dados MEDLINE (Medical Literature Analysis and Retrieval System on-line) publicados em inglês, no período compreendido entre 2008-2018; Resultados: Os principais resultados encontrados foi que a estética dentária tem influência direta na autoestima e por isso os indivíduos sofrem com uma barreira pessoal e profissional, manifestando negativamente na sua qualidade de vida. Porém, população que são reabilitados com próteses sobre implantes parece ter maior preocupação com sua estética e por isso sofreram mais com depressão, ao passo que isso aumenta quando se trata de dentes posicionados anteriormente na arcada dentária. Conclusão: Conclui-se que a estética dentária influencia psicossocialmente em um indivíduo, causando impactos na qualidade de vida de edêntulos, além disso, há diferenças psicológicas na população que busca reabilitação com próteses convencionais e implantossuportadas e a posição que os dentes perdidos ocupavam no arco dentário.Descritores: Próteses e Implantes; Estética Dentária; Qualidade de Vida.ReferênciasGavric A, Mirceta D, Jakobovic M, Pavlic A, Zrinski MT, Spalj S. Cranio dento facial characteristics, dental esthetics–related quality of life, and self-esteem. Am J Orthod Dentofacial Orthop. 2015;147(6):711-18.Fava J, Lin M, Zahran M, Jokstad A. 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O exercício físico pode promover benefícios na funcionalidade do sistema venoso. Contudo, tratando-se de exercício com sobrecargas musculares, observa-se contraindicações quanto à sua prática diante da possibilidade da mesma estar relacionada ao agravamento das disfunções venosas. OBJETIVO: Analisar os efeitos da prática do exercício com sobrecargas musculares sobre o diâmetro venoso de mulheres fisicamente inativas portadoras de insuficiência venosa crônica de membros inferiores. MÉTODOS: Vinte e duas mulheres com idades entre 21 e 58 anos (34,27 ± 12 anos) foram divididas aleatoriamente em dois grupos: experimental (n = 12) e controle (n = 10). O treinamento com cargas foi realizado por 16 semanas, e o diâmetro venoso foi medido nas veias safenas magna (em nível da coxa e perna) e parva no membro inferior esquerdo por meio de ecodoppler colorido. Utilizou-se a ANOVA por dois fatores para avaliar as possíveis modificações dos diâmetros entre os grupos e ao longo do tempo (p < 0,05). RESULTADOS: Não foram encontradas alterações significativas nos diâmetros das veias safenas parva (porções superior, média e inferior: p = 0,80, 0,32 e 0,20, respectivamente), magna em nível da perna (p = 0,17, 0,74 e 0,96) e magna em nível da coxa (p = 0,57, 0,67 e 0,52). CONCLUSÃO: A prática do exercício com sobrecargas musculares pode ser considerada um meio de intervenção ou tratamento, uma vez que não promoveu alterações no diâmetro venoso de mulheres que apresentaram insuficiência venosa crônica nos membros inferiores.

This study investigated the acute effect of static stretching methods (SS) and proprioceptive neuromuscular facilitation (PNF) on the static muscle strength (SMS). Eleven young male subjects with strength training experience, performed 3 tests with a 48h interval between them, randomly selected, where each one subject carried out all procedures: a) hand grip without stretching; b) hand grip preceded by static stretching of wrist flexors muscles; c) hand grip preceded by PNF stretching of wrist flexors muscles. The Shapiro-Wilk test verified the normality of data, and a one-way ANOVA with repeated measures, followed by Tukey's post hoc test, evaluated the differences between the groups. The significance was set at p < 0.05. Significant differences were detected between control and static stretching protocols (35.4±11.30 vs. 30.2±9.18 kg N-1 ; p < 0.05). The same was observed between control and PNF stretching protocols (35.4±11.30 vs. 29.1±10.05 kg N-1 ; p < 0.01). However, no statistical difference was found for static and FNP stretching protocols (30.2±9.18 vs. 29.1±10.05 kg N-1 ; p > 0.05). In conclusion, both stretching methods had caused negative effects on isometric strength, reducing its levels.

RESUMOO presente estudo objetivou analisar os efeitos do treinamento funcional com cargas (TFC) na composição corporal de mulheres fisicamente inativas. Vinte mulheres (25.70 ± 4.20 anos) foram designadas aleatoriamente para os grupos experimental (GE, n = 10) e controle (GC, n = 10), tendo o GE realizado 12 semanas de TFC, enquanto o GC não recebeu qualquer intervenção. As variáveis antropométricas avaliadas em ambos os grupos foram: massa corporal (MC), estatura, índice de massa corporal (IMC), massa de gordura absoluta, massa corporal magra (MCM) e percentual de gordura (%G). Os testes t de Student independente e pareado foram utilizados para a comparação das médias inter e intra-grupos experimental e controle (p < .05). O GE apresentou reduções significativas nos valores de %G (p < .001), enquanto o GC aumentou seus níveis de MCM (p < .001), IMC (p < .001) e MC (p = .021). Os resultados indicaram que após de 12 semanas o TFC reduz os níveis de gordura corporal, mas não promove aumentos de MCM em mulheres fisicamente inativas. Palavras-chave: treinamento funcional, composição corporal, mulheres, estudo experimental ABSTRACTThis study aimed to analyze the effects of the functional strength training (FST) on body composition of physically inactive women. Twenty women aged between 19 and 34 years old (25.70 ± 4.20 yr.) were randomly assigned to experimental (EG, n = 10) and control group (CG, n = 10). The EG performed 12 weeks of FST, while CG did not receive any intervention. The anthropometric variables evaluated in both groups were: body mass (BM), height, body mass index (BMI), absolute fat mass (AFM), lean body mass (LBM) and fat percent (%F). The paired and independent samples t tests were used to identify modifications between and within experimental and control groups (p < .05). The EG decreased %F values (p < .001), while CG increased the LBM (p < .001), BMI (p < .001) and BM (p = .021). Results showed that after 12 weeks FST can be useful to reduce body fat mass, but it doesn't promote increases on LBM of physically inactive women.

The aim of this study was to analyse the serum concentrations of testosterone (T), cortisol (C), lactate (LAC), creatine kinase (CK) and glucose (GLU) on mixed martial arts (MMA) athletes, before and after a fight. We divided 20 MMA athletes into two groups of 10 fighters each, according to the result of a fight, and were then evaluated four times: 24 hours before (-24h), one hour before (-1h), immediately after (0h) and 24 hours after the fight (+24h). It was observed: a significant decrease in T and T/C between moment -24h and 0h and a subsequent increase between the moment 0h and +24h and a reverse behaviour in variables C, LAC and GLU (p<0.0001); a decrease in CK between moment -24h and -1h and an increase between moment -1h and +24h (p<0.0001); and differences between winners and losers T levels, in moments -24h, -1h, 0h and +24h (p = 0.009 e p < 0.001, p = 0.005 e p = 0,001, T and C, respectively), in T/C in the moments -24h and 0h (p=0.006 and p=0.001, respectively) and in GLU levels (p<0.0001) in the moment 0h. Therefore, it seems that an MMA fight leads to metabolic stress and muscle damage, regardless of the result of the fight. The coaches have now more biochemical and hormonal references and indicators in response to an MMA fight.

O objetivo do estudo foi identificar a prevalência de fatores de risco (FR) para doenças crônicas não-transmissíveis (DCNT) em praticantes de futebol society e o impacto de 16 semanas de treinamento futebolístico em índices do estado nutricional e da aptidão física. MÉTODOS: Amostra: 45 indivíduos (38,6 ± 7,4 anos), divididos em dois grupos: Experimental (G1 = 22) e Controle (G2 = 23). O G1 submeteu-se a um programa de treinamento de três sessões semanais em dias alternados com duração de 90 minutos (min). O G2 participou, uma vez por semana, de jogo de futebol, com duração de 90 min. As variáveis de investigação contemplaram FR para DCNT, indicadores antropométricos, análises bioquímicas e da aptidão física. A análise dos dados contou com estatística descritiva e inferencial mediante o SPSS 13.0. RESULTADOS: As maiores prevalências de FR apontaram para o sobrepeso (65,0%), história familiar de câncer (57,5%) e cardiopatias (55,0%) e hipertrigliceridemia (32,5%). O G1 apresentou diminuição na massa corporal (p = 0,007), circunferência abdominal (p = 0,010), índice de massa corpórea (p = 0,007) e percentual de gordura (p = 0,004), fato não observado no G2. Em ambos os grupos, as análises do colesterol total, triglicerídeos e glicose em jejum, não mostraram diminuição significativa durante o período investigado (p > 0,05). O G1 obteve melhores índices de consumo máximo de oxigênio (p = 0,011), resistência muscular (p = 0,000) e flexibilidade (p = 0,000), o que não ocorreu no G2. CONCLUSÃO: Os futebolistas apresentaram alta prevalência de FR para DCNT. Em termos gerais, o G1 obteve mudanças satisfatórias no estado nutricional e na aptidão física durante o período de 16 semanas, condição não identificada no G2.