The purpose of this study was to analyze systolic blood pressure (SBP), diastolic blood pressure (DBP) and the heart rate (HR) before, during and after training at moderate intensity (MI, 50%-1RM) and at low intensity with blood flow restriction (LIBFR). In a randomized controlled trial study, 14 subjects (average age 45±9,9 years) performed one of the exercise protocols during two separate visits to the laboratory. SBP, DBP and HR measurements were collected prior to the start of the set and 15, 30, 45 and 60 minutes after knee extension exercises. Repeated measures of analysis of variance (ANOVA) were used to identify significant variables (2 × 5; group × time). The results demonstrated a significant reduction in SBP in the LIBFR group. These results provide evidence that strength training performed acutely alters hemodynamic variables. However, training with blood flow restriction is more efficient in reducing blood pressure in hypertensive individuals than training with moderate intensity.
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.
Resumo.A atividade turística contribui para o desenvolvimento local, gerando emprego e renda, inclusive através da utilização dos recursos naturais e histórico-culturais como atrativos. Neste sentido é importante que esta atividade seja desenvolvida com base em um planejamento, que respeite os limites dos espaços e recursos locais de forma sustentável. Assim, este artigo tem como objetivo analisar o nível de sustentabilidade da atividade turística do Delta do Parnaíba (Estados do Piauí e Maranhão, Brasil), por meio de pesquisa exploratória e explicativa, com base em um estudo de campo e uma abordagem qualitativa. Os resultados da pesquisa mostram que o nível de sustentabilidade turística no Delta do Parnaíba encontra-se parcialmente insustentável, pois no geral foram identificados 17 indicadores sustentáveis e 22 indicadores insustentáveis. Diante do exposto há uma necessidade urgente do poder público viabilizar políticas que venham melhorar os indicadores para contribuir com o desenvolvimento da atividade turística de forma sustentável e consequentemente com o desenvolvimento local sustentável. Palavras-chave:Delta das Américas; Indicadores de sustentabilidade; Indicadores de sustentabilidade do turismo; Sistema de indicadores sustentabilidade; Turismo sustentável. Abstract. Sustainability of the tourist activity of the Delta doParnaíba, States of Piauí and Maranhão, Northeast Brazil. Tourism activity contributes to local development, generating jobs and income, and it depends on the use of natural and historical-cultural resources as an attraction. In this sense, this activity should be developed based on planning that respects the limits of local spaces and resources in a sustainable way. Thus, this study aimed to analyze the level of sustainability of tourist activity in the Delta do Parnaíba (States of Piauí and Maranhão, Brazil), through an exploratory research, based on a field study and a qualitative approach. The obtained results demonstrated that the level of tourism sustainability in the Delta do Parnaíba is partially unsustainable since 17 sustainable indicators and 22 unsustainable indicators were identified. In view of the above, it was concluded that the public power should develop measures to
ARTIGO ORIGINAL | ORIGINAL ARTICLE RESUMOO objetivo do presente estudo foi verificar o efeito agudo do exercício predominantemente aeróbico (EA) com restrição de fluxo sanguíneo (RFS) sobre a pressão arterial sistólica (PAS), pressão arterial diastólica (PAD) e frequência cardíaca (FC) em jovens saudáveis. Participaram do estudo 13 universitários normotensos (19.5 ± 1.7anos). Os participantes foram divididos randomicamente em duas sessões experimentais (cross-over): a) exercício aeróbico com a RFS (EARFS); b) exercício aeróbico sem a RFS (EASRFS). As sessões foram realizadas com cinco séries de dois minutos e um minuto de intervalo. A PAS, PAD e FC foram mensurados em repouso, no final dos exercícios e durante os 60 minutos pós-exercício. O EASRFS apresentou efeito hipotensivo no 60º pós-exercício (p= 0.029); o EA com e sem RFS elevou significativamente a PAS e FC imediatamente após o exercício (p< 0.05), e o EARFS apresentou valores de PAD e FC superiores, no momento imediatamente pós-exercício, quando comparado com o EASRFS (p= 0.001; p< 0.001, respectivamente). Conclui-se, que o EARFS parece não maximizar o efeito hipotensivo, ambos as sessões podem elevar a PAS e FC imediatamente pós-exercício com valores significativos maiores na PAD e FC para o EARFS. Palavras-chave: hemodinâmica, oclusão vascular, exercício, efeito hipotensivo. ABSTRACTThe aim of the present study was to verify the acute effect of the aerobic exercise (AE) with blood flow restriction (BFR) upon systolic (SBP), diastolic blood pressure (DBP) and heart rate (HR) in health youngsters. Participated in the present study 13 young normotensive students (19.5 ± 1.7 years old). The sample was randomly divided into two experimental protocols: stationary race with BFR and stationary race without BFR. Subjects performed 5 sets of 2 minutes with 1 minute of rest interval for both protocols. SBP, DBP and HR were measured at rest, in the end of the exercises and during 60 minutes after conditions. The AE without BFR presented hypotensive effect 60 minutes post exercise (p= 0.029); the AE with and without BFR elevated significantly the SBP and HR immediately post exercise (p< 0.05) and the AE with BFR presented higher DBP and HR values immediately post-exercise when compared to AE without BFR (p= 0.001; p< 0.001, respectively). It is concluded that the AE without BFR does not seem to maximize the hypotensive effect, both sessions can increase SBP and HR immediately post-exercise with significant higher values in DBP and HR for AE with BFR.
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