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Cardiovascular Effects of Aerobic and Strength Training in Hypertensive Middle-aged Individuals

2019年9月23日 更新者:Alvaro Reischak-Oliveira、Federal University of Rio Grande do Sul

Effects of Aerobic or Strength Training on Cardiovascular, Endothelial Response, and Blood Flow in Hypertensive Middle Ages Individuals: a Randomized Controlled Clinical Trial.

Systemic arterial hypertension (SAH) is characterized by elevated and sustained blood pressure levels, related to several risk factors. Modifying lifestyle to combat risk factors associated with cardiovascular disease is critical, as such factors are related alteration of endothelial vasodilator response leading to progressive loss of its protective function. However, endothelial dysfunction related to hypertension is not only related to the decrease in the bioavailability of endothelium relaxants, but also to the time of presence of hypertension, increased production of vessel contraction factors and oxidative stress related to the disease. In this way, physical training presents as a non-drug strategy capable of directly and indirectly influencing the pathophysiology of hypertension. In this way the objective of the present work will be to evaluate the acute and chronic effect of aerobic exercise and strength on blood pressure, blood markers of vasodilation and vascular endothelial vasoconstriction, as well as the repercussion on flow-mediated dilatation and oxidative stress markers, In middle-aged hypertensive individuals before and after 12 weeks of training. Study hypothesis: The expected results of the research are that the endothelial response of biochemical markers of vasodilation and vasoconstriction will change positively after aerobic and strength training and the responses will be similar when compared between groups. There will be an improvement in the antioxidant capacity in both groups and the magnitude of the hypotensive effect will be greater in the aerobic group when compared to control and strength.

研究概览

地位

完全的

条件

干预/治疗

研究类型

介入性

注册 (实际的)

60

阶段

  • 不适用

联系人和位置

本节提供了进行研究的人员的详细联系信息,以及有关进行该研究的地点的信息。

学习地点

    • Rio Grande Do Sul
      • Porto Alegre、Rio Grande Do Sul、巴西
        • Universidade Federal do Rio Grande do Sul

参与标准

研究人员寻找符合特定描述的人,称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。

资格标准

适合学习的年龄

30年 至 59年 (成人)

接受健康志愿者

有资格学习的性别

全部

描述

Inclusion Criteria:

Study inclusion criteria consisted of the following: 1) Individuals should use antihypertensive medication; 2) 30-59 years of age.

Exclusion Criteria:

The following aspects were regarded as exclusion criteria: 1) body mass index (BMI) up to 40 kg/m2; 2) regular engagement in any type of physical exercise training in the past 6 months prior to inclusion in the study; 3) symptomatic peripheral arterial occlusive disease; 4) aortic insufficiency or stenosis more than stage I; 5) hypertrophic obstructive cardiomyopathy; 6) congestive heart failure (>NYHA II); 7) uncontrolled cardiac arrhythmia with hemodynamic relevance; 7) change of antihypertensive medication in the past 4 weeks prior to inclusion in the study; 8) indication of unstable coronary artery disease. 9) use of tobacco products.

学习计划

本节提供研究计划的详细信息,包括研究的设计方式和研究的衡量标准。

研究是如何设计的?

设计细节

  • 主要用途:治疗
  • 分配:随机化
  • 介入模型:阶乘赋值
  • 屏蔽:单身的

武器和干预

参与者组/臂
干预/治疗
实验性的:Exercise training protocols
Participants will be randomized in one of TWO groups: aerobic training group (AT) or strength training group (ST). Each training protocol will last 12 weeks, being the initial two weeks designed to participants' gradual adaptations to respective training protocol, with sessions performed three times per week in non-consecutive days.

Individuals in the strength training group will perform exercises based on exercises with free weights and equipment, for upper and lower limbs with a weekly frequency of three times for twelve weeks. The periodization will start with 2 sets, 15 - 20 repetitions, passive rest of 120 seconds, exercises performed alternating by segments and the intensity of 50% of maximum repetition. After twelve weeks the periodization will be finished with 3 sets, 8-12 repetitions, passive rest of 120 seconds, exercises performed alternated by segments and the intensity of 70% of maximum repetition.

The following exercises will compose the strength training protocol:

  • Squatting
  • Leg press
  • Knee Extension
  • Knee Flexion
  • Supine Challenge
  • High Pull
  • Elbow flexion
  • Extension of elbows
  • Development
  • Abdominal
Individuals in the aerobic training group will perform aerobic treadmill exercise three times a week for twelve weeks. The training prescription will be performed through the percentage of maximum oxygen consumption with intensity in 60% to 80% with an average duration of 50 minutes of continuous exercise.
无干预:Control Group
The individuals who will be part of the control group will be instructed to follow their daily activities, avoiding any systematic exercise program and return to the end of the 12 weeks for reevaluation.

研究衡量的是什么?

主要结果指标

结果测量
措施说明
大体时间
Blood pressure
大体时间:End of 12-week exercise period
24-h Ambulatory blood pressure
End of 12-week exercise period
Endothelial Function
大体时间:End of 12-week exercise period
Flow mediated dilation to reactive hyperemia
End of 12-week exercise period
Endothelium derived factors
大体时间:End of 12-week exercise period
The plasma levels of NOx and ET-1 will be determined by enzyme-linked immunosorbent assay
End of 12-week exercise period
Inflammatory Profile
大体时间:End of 12-week exercise period
The inflammatory profile was accessed trough the cytokines and chemokines levels
End of 12-week exercise period

合作者和调查者

在这里您可以找到参与这项研究的人员和组织。

赞助

出版物和有用的链接

负责输入研究信息的人员自愿提供这些出版物。这些可能与研究有关。

研究记录日期

这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查,以确保它们在发布到公共网站之前符合特定的质量控制标准。

研究主要日期

学习开始 (实际的)

2018年6月2日

初级完成 (实际的)

2019年6月30日

研究完成 (实际的)

2019年7月30日

研究注册日期

首次提交

2017年9月12日

首先提交符合 QC 标准的

2017年9月12日

首次发布 (实际的)

2017年9月14日

研究记录更新

最后更新发布 (实际的)

2019年9月26日

上次提交的符合 QC 标准的更新

2019年9月23日

最后验证

2019年9月1日

更多信息

与本研究相关的术语

其他相关的 MeSH 术语

其他研究编号

  • 69373217.3.0000.5347

药物和器械信息、研究文件

研究美国 FDA 监管的药品

研究美国 FDA 监管的设备产品

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动脉高血压的临床试验

Strength training group的临床试验

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