Background
Meta‐analyses have shown that isometric handgrip training (
IHT
) can reduce brachial systolic and diastolic blood pressure (
BP
) by >6/4 mm Hg, respectively. However, whether
IHT
promotes these effects among patients with peripheral artery disease, who exhibit severe impairment in cardiovascular function, is currently unknown. This study aimed to evaluate the effects of
IHT
on the cardiovascular function of patients with peripheral artery disease.
Methods and Results
A randomized controlled trial with peripheral artery disease patients assigned to either the
IHT
or control group was conducted. The
IHT
group performed 3 sessions per week, for 8 weeks, of unilateral handgrip exercises, consisting of 4 sets of isometric contractions for 2 minutes at 30% of maximum voluntary contraction and a 4‐minute interval between sets. The control group received a compression ball in order to minimize the placebo effects, representing sham training. The primary outcome was brachial
BP
. The secondary outcomes were central
BP
, arterial stiffness parameters, cardiac autonomic modulation, and vascular function. The
IHT
program reduced diastolic
BP
(75 [10] mm Hg preintervention versus 72 [11] mm Hg postintervention), with no change in the control group (74 [11] mm Hg preintervention versus 74 [11] mm Hg postintervention), with this between‐group difference being significant (
P
=0.04). Flow‐mediated dilation improved in the
IHT
group (6.0% [5.7] preintervention versus 9.7% [5.5] postintervention), with no change in the control group (7.6% [5.5] preintervention versus 7.4% [5.1] postintervention), with this between‐group difference being significant (
P
=0.04). There was no change in other measured variables over the intervention period.
Conclusions
IHT
reduced brachial diastolic
BP
and improved local vascular function in patients with peripheral artery disease.
Clinical Trial Registration
URL
:
https://www.clinicaltrials.gov/
. Unique identifier:
NCT
02742220.
Resumo Contexto A pandemia do Coronavírus 2019 (COVID-19) tem afetado negativamente o comportamento da população. Nesse contexto, o impacto da pandemia da COVID-19 no tratamento medicamentoso dos pacientes com doença arterial periférica (DAP) e claudicação intermitente (CI) permanece obscuro. Objetivos Analisar o impacto da pandemia da COVID-19 no tratamento medicamentoso dos pacientes com DAP e CI. Métodos Neste estudo observacional transversal, 136 pacientes com DAP e CI, recrutados do nosso banco de dados, responderam por telefone um questionário envolvendo as seguintes questões: a) cuidados com a COVID-19; b) saúde global; c) tratamento das doenças. Posteriormente, os pacientes foram divididos em dois grupos, de acordo com a dificuldade para a aquisição dos medicamentos (DAM: dificuldade e SDAM: sem dificuldade), para a comparação da saúde global entre os dois grupos. Resultados Dezessete porcento dos pacientes reportaram dificuldades para a aquisição dos medicamentos durante a pandemia. Uma maior prevalência desses pacientes reportou estar mais triste (56,5% versus 24,8%, p < 0,01) e com mais dificuldades para dormir (56,5% versus 24,8%, p < 0,01) em relação aos pacientes do grupo SDAM. Os grupos não apresentaram diferenças para o declínio na capacidade de caminhada, ansiedade, estresse e depressão (p > 0,05). Conclusões Uma maior prevalência de pacientes do grupo DAM reportou estar mais triste e com mais dificuldade para dormir em comparação ao grupo SDAM durante a pandemia da COVID-19.
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