Respostas cardiovasculares agudas ao exercício de força realizado em três diferentes formas de execução

Monteiro, Walace David; Souza, Denis Alves de; Rodrigues, Maurício Nunes; Farinatti, Paulo

doi:10.1590/s1517-86922008000200002

Cited by 4 publications

(3 citation statements)

References 17 publications

(30 reference statements)

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“…Although some studies have shown that cardiovascular stress may be higher during exercises performed until fatigue with larger than smaller muscle groups [11,18], others could not detect differences in SBP, DBP, HR and RPP between unilateral and bilateral knee extensions [23,24,28], or between biceps curls and knee extensions [7]. Methodological features might account for those discrepant results, such as differences across protocols in the duration of total exercise [18,23,24] or concentric/eccentric phases [18] or type of muscle fibers [7,22]. For instance, MacDougall et al [18] observed that the peak pressure response was lower when a rela-tively smaller muscle mass (biceps curl) was employed in comparison to a larger one (single-or double-leg press).…”

Section: Discussionmentioning

confidence: 95%

“…A meticulous analysis of prior studies with regard to this reveals that they failed to control important aspects across exercise protocols, such as matched total exercise duration [18,23,24], concentric/eccentric time [18], or type of muscle fibers [7,22]. Those variables might influence the tension upon body vasculature, intrathoracic pressure, and time of contraction, all related to chang-…”

Section: Introductionmentioning

confidence: 99%

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Cardiovascular Responses to Resistance Exercise Performed with Large and Small Muscle Mass

Matos-Santos¹,

Farinatti²,

Borges

et al. 2017

Int J Sports Med

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Prior research about the effects of the amount of exercised muscle mass upon cardiovascular responses (CVR) has neglected a potential bias related to total exercise and concentric/eccentric duration. Autonomic responses and perceived exertion (RPE) were compared in resistance exercises performed with larger and smaller muscle mass and matched for total exercise and concentric/eccentric duration. Twelve men performed 4 sets of 12 repetitions of unilateral (UNI) and bilateral (BIL) knee extensions at 70% of 12RM. Increases in CVR were always greater at the last set of BIL over UNI, as were SBP (35% vs. 23%), DBP (36% vs. 23%), HR (40% vs. 26%), RRP (90% vs 53%) and CO (55% vs 39%). No difference between protocols was found for autonomic modulation before and after exercise, but BIL induced significantly greater changes than UNI from baseline for R-R intervals (-13% vs. -7%), SDNN (-38% vs. -17%) and rMSSD (-41% vs. -21%). The rate of perceived exertion in the last set was higher in BIL than UNI (7.6±0.5 vs. 6.6±1.4 OMNI-RES; P<0.05) and did not correlate with any CVR. Thus, CVR were greater in resistance exercise performed with larger than smaller muscle mass. This information is relevant for patients with high cardiovascular risk.

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Section: Discussionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Cardiovascular Responses to Resistance Exercise Performed with Large and Small Muscle Mass

Matos-Santos¹,

Farinatti²,

Borges

et al. 2017

Int J Sports Med

View full text Add to dashboard Cite

show abstract

“…Outra limitação do presente estudo é a ausência da mensuração da PA durante a execução do movimento. Monteiro et al 24 sugeriram que este seria um parâmetro de maior significância, contudo exigiria a mensuração invasiva da PA, o que é impraticável na maior parte dos contextos de prática de exercícios.…”

Section: Discussionunclassified

Duplo-Produto E Variação Da Frequência Cardíaca Após Esforço Isocinético Em Adultos E Idosos

Antonio

Assis

2017

Rev Bras Med Esporte

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Introdução: O envelhecimento predispõe a alterações multissistêmicas, por exemplo, nos sistemas cardiovascular e musculoesquelético. A prática de exercício físico é um importante recurso terapêutico para retardar perdas de funções orgânicas. No entanto, existe pouco conhecimento sobre as respostas cardiovasculares durante e após o exercício isocinético em idosos. Objetivo: O objetivo deste estudo é analisar as respostas de frequência cardíaca, pressão arterial e duplo-produto em indivíduos de distintas faixas etárias submetidos ao esforço muscular isocinético. Método: O estudo foi constituído por 60 voluntários distribuídos em três faixas etárias -G1: 30 a 45 anos, G2: 45 a 60 anos e G3: 60 a 75 anos -submetidos a teste bilateral de flexão-extensão de joelhos em dinamômetro isocinético com velocidade angular de 60º/segundo para verificação das respostas hemodinâmicas. Os dados foram analisados por meio do Software Bioestat ® 5.3, pelo teste de Kruskal-Wallis seguido pelo teste de Dunn para as amostras independentes e de Friedman para amostras dependentes, além da comparação das curvas de Kaplan-Meier por meio do teste de log-rank, considerando P ≤ 0,05. Resultados: O grupo de idosos (G3) apresentou maiores valores de pressão arterial sistólica, duplo-produto e tempo para o retorno à frequência cardíaca basal comparado com o grupo mais jovem (G1). Conclusão: O grupo de 60 a 75 anos de idade apresentou maior consumo de oxigênio pelo miocárdio durante e após o exercício, assim como maior tempo para retornar à FC basal em comparação com os mais jovens. Descritores: frequência cardíaca; envelhecimento; esforço físico; sistema cardiovascular. ABSTRACTIntroduction: Aging predisposes to multisystem changes, for example, in the cardiovascular and musculoskeletal systems. The practice of physical exercise is an important therapeutic resource to delay losses of organic functions. However, there is little knowledge about cardiovascular responses during and after isokinetic exercise in the elderly. Objective: The objective of this study is to analyze the responses of heart rate, blood pressure, and rate-pressure product in individuals of different age groups submitted to isokinetic muscular effort. Method: The study consisted of 60 volunteers distributed into three age groups -G1: 30-45 years, G2: 45-60 years, and G3: 60-75 years -submitted to bilateral flexion-extension knee test in isokinetic dynamometer with angular velocity of 60°/second to verify hemodynamic responses. Data were analyzed using the Bioestat ® 5.3 software, by the Kruskal-Wallis test followed by Dunn' s test for independent samples and Friedman' s test for dependent samples, as well as comparing the Kaplan-Meier curves by means of log-rank test, considering P≤0.05. Results: The elderly group (G3) presented higher values of systolic blood pressure, rate-pressure product, and time to return to baseline heart rate compared to the younger group (G1). Conclusion: The 60-75 year old group had higher myocardial oxygen consumption during and after the exercise, a...

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Treinamento de força em sessão com exercícios poliarticulares gera estresse cardiovascular inferior a sessão de treino com exercícios monoarticulares

Mello

Rosa

Vaz

et al. 2017

Revista Brasileira de Ciências do Esporte

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Respostas cardiovasculares agudas ao exercício de força realizado em três diferentes formas de execução

Cited by 4 publications

References 17 publications

Cardiovascular Responses to Resistance Exercise Performed with Large and Small Muscle Mass

Cardiovascular Responses to Resistance Exercise Performed with Large and Small Muscle Mass

Duplo-Produto E Variação Da Frequência Cardíaca Após Esforço Isocinético Em Adultos E Idosos

Treinamento de força em sessão com exercícios poliarticulares gera estresse cardiovascular inferior a sessão de treino com exercícios monoarticulares

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