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High-Intensity Exercise and Endothelial Function in Type 1 Diabetes(HIIT-T1D) (HIIT-T1D)

2018年3月1日 更新者:Hospital de Clinicas de Porto Alegre

Effect of High-Intensity Interval Exercise Training Compared With Moderate-intensity Continuous Training on Endothelial Function and Cardiorespiratory Fitness of Type 1 Diabetes Patients

To study the effect of 8 week high-intensity interval training (HIIT) compared with moderate intensity (MCT) interval training and sedentary patients(CON) with type 1 diabetes. Adult T1DM patients without known complications are randomised in blocks into these 3 groups according to their baseline flow mediated dilation (FMD). After 8 week exercise training, the main outcome, FMD, is re-evaluated. Additional variables such as VO2 peak for cardiovascular fitness, oxidative stress and endothelial independent vasodilation to study vascular rigidity are also evaluated.

研究概览

详细说明

In a randomized controlled open trial, 36 adult type 1 diabetes mellitus (T1DM) patients without known complications were randomized into 3 groups: HIIT n=12; MCT n=12 and a sedentary control group (CON) n=12. Total sample size was calculated to a power of 80% alha 0.05 and a difference in mean FMD of 2%. Before randomisation, flow mediated dilation (FMD) and maximal exercise capacity (VO2 peak)is determined. Block Randomisation based on FMD rank values are done to equalize baseline FMD. Exercise sessions are performed in cycle ergometers during 40 minutes, 3 times a week, along 8 weeks. HIIT protocol, intensity vary from 50 to 85% of the maximum heart rate (HRmax), while in MCT, HR remained stable at 50% HRmax. Endothelial function was measured by flow mediated dilation (FMD) for endothelium-dependent vasodilation (EDVD) and smooth-muscle function was measured by nitroglycerine mediated dilation (endothelium independent vascular dilation) - (EIVD). Peak oxygen consumption (VO2peak) and oxidative stress markers were determined before and after the training period. ED was defined as an increase of less than 8% in vascular diameter after cuff release.

研究类型

介入性

注册 (实际的)

36

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

    • RS
      • Porto Alegre、RS、巴西、90035-0033
        • Serviço de Endocrinologia e Metabologia do HCPA

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

18年 至 40年 (成人)

接受健康志愿者

有资格学习的性别

全部

描述

Inclusion Criteria:

T1DM

  • Physically inactive or not involved in exercise training programs in the previous 6 months
  • Interested in starting an exercise training program.

Exclusion Criteria:

  • Smokers,
  • Pregnancy
  • Co-morbidities not related to diabetes
  • Drugs other than insulin
  • Loss of renal function (serum creatinine above 1.5 mg/dl),
  • Moderate to severe retinopathy or blindness,
  • Suspected or confirmed coronary artery disease,
  • Severe peripheral neuropathy
  • Foot ulcers or history of previous foot ulcer
  • Suspected or confirmed clinical autonomic neuropathy.

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:支持治疗
  • 分配:随机化
  • 介入模型:并行分配
  • 屏蔽:无(打开标签)

武器和干预

参与者组/臂
干预/治疗
实验性的:High Intensity Interval Training
High Intensity Interval Exercise Training in cycle ergometer 3 times a week for 8 weeks
High Intensity Interval Exercise Training in cycle ergometer, exercising at 80% of maximal capacity during one minute alternated with exercise at 50% of maximal capacity during 4 minutes intervals, for a total of 30 minutes. Three times a week for 8 weeks
有源比较器:Moderate Continuous Exercise Training
Moderate Continuous Interval Training
Moderate Continuous Exercise Training 3 times a week for 8 weeks at 50% of maximal capacity
其他:Non-exercise
Sedentary Type 1 Diabetes Controls.
Conventional care for sedentary Type 1 Diabetes Controls. No intervention.

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
Endothelial Dependent Mediated Vascular Dilation
大体时间:8 weeks
Percent of change from baseline in flow mediated dilation measured through arterial ultrasound at right arm
8 weeks

次要结果测量

结果测量
措施说明
大体时间
Peak oxygen consumption
大体时间:8 weeks
Percent of change in maximal oxygen capacity measured by in maximal oxygen consumption
8 weeks
Endothelial independent vascular dilation
大体时间:8 weeks
Percent of change from baseline in nitrate mediated dilation measured through arterial ultrasound at right arm
8 weeks

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。

调查人员

  • 首席研究员:Marcello C Bertoluci, MD, PhD、Hospital de Clinicas de Porto Alegre

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。

一般刊物

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)

2015年1月1日

初级完成 (实际的)

2016年1月1日

研究完成 (实际的)

2017年1月1日

研究注册日期

首次提交

2018年2月23日

首先提交符合 QC 标准的

2018年2月23日

首次发布 (实际的)

2018年3月1日

研究记录更新

最后更新发布 (实际的)

2018年3月5日

上次提交的符合 QC 标准的更新

2018年3月1日

最后验证

2018年3月1日

更多信息

与本研究相关的术语

计划个人参与者数据 (IPD)

计划共享个人参与者数据 (IPD)?

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

此信息直接从 clinicaltrials.gov 网站检索,没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求,请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改,我们的网站上也会自动更新.

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