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Women With Previous GDM and the Effects of HIIT. (GDM-HIIT)

2026年4月28日 更新者:Odense University Hospital

Deep Metabolic and Molecular Phenotyping of Women With Previous Gestational Diabetes Mellitus and the Responses to High-intensity Interval Training.

The goal of this clinical trial is to investigate if women with previous gestational diabetes (pGDM) are characterized with unique metabolic and molecular alterations compared to women without pGDM. Furthermore if 8 weeks of high-intensity interval training (HIIT) can improve these alterations. The main questions we aim to answer are:

  1. Women with pGDM have metabolic abnormalities compared with women without pGDM, and that these metabolic abnormalities are explained by unique molecular abnormalities in skeletal muscle and adipose tissue.
  2. Eight weeks of HIIT combining rowing and cycling can markedly improve these metabolic abnormalities in women with pGDM and these improvements are explained by beneficial cellular and molecular changes in skeletal muscle and adipose tissue.

Researchers will compare 20 women with pGDM to 20 glucosetolerant without pGDM, who are matched on age, BMI and times since last pregnancy.

Participants will undergo a screening visit and examinations on two separate days before (day 1 and day 2) and two separate days after (day 3 and day 4) 8-weeks of HIIT, in all cases after an overnight fast (≥ 12 h). Day 1 and day 3 will include assessment of body composition and VO2max. On day 2 and day 4, the insulin sensitivity, substrate metabolism, and β-cell function of the participants will be examined by a Botnia-clamp combined by indirect calorimetry. Skeletal muscle biopsies from m. vastus lateralis and subcutaneous abdominal adipose tissue biopsies are taken in the basal and insulin-stimulated states of each clamp.

研究概览

地位

邀请报名

条件

干预/治疗

研究类型

介入性

注册 (估计的)

40

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

    • Region Syddanmark
      • Odense、Region Syddanmark、丹麦、5000
        • Steno Diabetes Center Odense, Odense University Hospital

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

  • 成人

接受健康志愿者

是的

描述

Inclusion Criteria:

  • Age 25-45 years
  • BMI 20-35 kg/m2
  • 2-8 years since the last pregnancy
  • No known diabetes or PCOS
  • No previous bariatric surgery
  • No known disease
  • Be drug-naive
  • Have a regular menstrual cycle (23-35 days)
  • Not be pregnant or planning pregnancy during the study period
  • Low or moderate level of physical activity must be (max 2 hours of moderate exercise weekly).
  • All participants should be able to provide informed consent
  • Women without pGDM must not have known hypertension or first-degree relatives with diabetes.

Exclusion Criteria:

  • Abnormal cardiac stethoscopy, ECG or screening blood tests
  • Positive plasma GAD-65 antibodies
  • Positive plasma choriogonadotropine
  • Undiagnosed T2D based on fasting plasma glucose (≥ 7.0 mmol/mol), plasma HbA1c (≥ 48 mmol/mol), or 2-h plasma glucose during an oral glucose tolerance test (OGTT) (≥ 11.1 mmol/mol)
  • Dyslipidemia (plasma LDL-cholesterol > 5.0 mmol/l)
  • In women with pGDM: Undiagnosed severe hypertension (blood pressure > 160/100)
  • In women without pGDM: Undiagnosed hypertension (blood pressure >140/90 mmHg) or impaired glucose tolerance (fasting plasma glucose at 6.16.9 mmol/l, plasma HbA1c at 42-47 mmol/mol, or a 2-h glucose at 7.8-11.0 mmol/l during an OGTT).

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:预防
  • 分配:非随机化
  • 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:Women with previous gestational diabetes mellitus
Women with previous gestational diabetes mellitus, aged 25-45, who gave birth 2-8 years ago.
The training intervention consists of 8-weeks of HIIT combining rowing and cycling on ergometers with two supervised sessions weekly in small groups of up to 10 participants. All HIIT sessions will start with a 10-min warm-up period followed by training blocks of 5 x 1 min high-intensity intervals (100-110% of Wattmax corresponding to ≥ 85% of maximum heart rate (HRmax)) each interspersed by 1 min active or resting recovery. Between the training blocks, the participants will have a 4-min break in which they shift from cycling to rowing or vice versa. The number of training blocks will gradually increase from two to five blocks during the 8-week intervention period with one block being added every second week. Halfway through the HIIT-protocol the workload will be adjusted according to a midway VO2max test. Participants will wear a heart monitor during training sessions.
有源比较器:Women without previous gestational diabetes
Women without previous gestational diabetes mellitus, aged 25-45, who gave birth 2-8 years ago.
The training intervention consists of 8-weeks of HIIT combining rowing and cycling on ergometers with two supervised sessions weekly in small groups of up to 10 participants. All HIIT sessions will start with a 10-min warm-up period followed by training blocks of 5 x 1 min high-intensity intervals (100-110% of Wattmax corresponding to ≥ 85% of maximum heart rate (HRmax)) each interspersed by 1 min active or resting recovery. Between the training blocks, the participants will have a 4-min break in which they shift from cycling to rowing or vice versa. The number of training blocks will gradually increase from two to five blocks during the 8-week intervention period with one block being added every second week. Halfway through the HIIT-protocol the workload will be adjusted according to a midway VO2max test. Participants will wear a heart monitor during training sessions.

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
β-cell function by OGTT
大体时间:At screening visit.
Will be estimated as the disposition index (DI) by oral glucose tolerance test (OGTT) derived indices of insulin sensitivity and insulin secretion, after a 2-hour OGTT (75g) with measurement of plasma glucose, serum insulin and serum C-peptide at 0, 30 and 120 min.
At screening visit.
β-cell function by Botnia-clamp
大体时间:At examination day 2 and 4.
β-cell function adjusted for insulin sensitivity will be determined by calculating the DI as a product of the acute insulin response to glucose (AIRg) and insulin-stimulated glucose infusion rate (GIR).
At examination day 2 and 4.
Whole body composition (lean body mass and fat mass)
大体时间:At examination day 1 and 3.
Will be obtained by a dual-energy X-ray absorptiometry (DXA) scanning (Prodigy Advance, GE Healthcare, CHI, US)
At examination day 1 and 3.
Lean body mass
大体时间:At examination day 1 and 3.
Will be obtained by a dual-energy X-ray absorptiometry (DXA) scanning (Prodigy Advance, GE Healthcare, CHI, US)
At examination day 1 and 3.
Fat mass
大体时间:At examination day 1 and 3.
Will be obtained by a dual-energy X-ray absorptiometry (DXA) scanning (Prodigy Advance, GE Healthcare, CHI, US)
At examination day 1 and 3.
Cardiorespiratory fitness (maximal oxygen consumptions (VO2-max))
大体时间:At examination day 1 and 3.
Will be determined by an incremental exercise test on a cycle ergometer (SRM Ergometer System, Jülich, DE) combined with mixed chamber cardiopulmonary exercise analyzer (Oxigraf, Model O2CPX, California, US)
At examination day 1 and 3.
Insulin sensitivity by Botnia-clamp
大体时间:At examination day 2 and 4.
Consisting of a hyperinsulinemic-euglycemic clamp (insulin 40mU/min/m2 for 3 h) combined with a 60 min intravenous glucose tolerance test (IVGGT) using a glucose bolus (0.3 kg per kg body weight with a maximum of 25 g glucose).
At examination day 2 and 4.

次要结果测量

结果测量
措施说明
大体时间
Plasma-specific metabolomics by LC- and GC-MS
大体时间:At examination day 2 and 4.
Liquid chromatography (LC)- and gas chromatography (GS)-based mass spectrometry (MS) will be used to detection, identification, and quantitation of very large numbers of metabolites in the micro- and nano-molar range in body fluids, such as blood.
At examination day 2 and 4.
Tissue-specific metabolomics by LC- and GC-MS
大体时间:At examination day 2 and 4.
Liquid chromatography (LC)- and gas chromatography (GS)-based mass spectrometry (MS) will be used to detection, identification, and quantitation of very large numbers of metabolites in the micro- and nano-molar range in body tissues.
At examination day 2 and 4.
Proteomics
大体时间:At examination day 2 and 4.
To identify biological processes and signaling networks altered in women with pGDM and changed in response to HIIT, we will apply unbiased mass-spectrometry based proteome analysis of the skeletal muscle and adipose tissue biopsies.
At examination day 2 and 4.
Phosphoproteomics
大体时间:At examination day 2 and 4.
To identify biological processes and signaling networks altered in women with pGDM and changed in response to HIIT, we will apply unbiased mass-spectrometry based phosphoproteome analysis of the skeletal muscle and adipose tissue biopsies.
At examination day 2 and 4.
Transcriptional profiling and gene expression
大体时间:At examination day 2 and 4.

High-resolution transcriptional profiling of abdominal adipose tissue and skeletal muscle biopsies will be performed using total RNA sequencing with next generation sequencing (TruSeq® Stranded Total RNA Library Prep Gold; Illumina).

Gene expressions are quantified using Targeted quantitative real-time PCR (qRT-PCR) and Western Blotting.

At examination day 2 and 4.
Mitochondrial respiration
大体时间:At examination day 2 and 4.
Will be measured on permeabilized muscle fibers, and analyzed by measuring oxygen consumption when adding substrates, uncouplers, and inhibitors to the chambers of a high-resolution oxygraphy.
At examination day 2 and 4.
Lipid droplets by TEM
大体时间:At examination day 2 and 4.
The morphology, volume, and localization of lipid droplets in muscle biopsies from the study cohorts will be determined by Transmission Electron Microscopy (TEM).
At examination day 2 and 4.
Mitochondria by TEM
大体时间:At examination day 2 and 4.
The morphology, volume, and localization of mitochondria in muscle biopsies from the study cohorts will be determined by Transmission Electron Microscopy (TEM).
At examination day 2 and 4.
Lipid droplet interaction with mitochondria by TEM
大体时间:At examination day 2 and 4.
The the physical interaction between lipid droplets and mitochondria in muscle biopsies from the study cohorts will be determined by Transmission Electron Microscopy (TEM).
At examination day 2 and 4.
Protein abundance
大体时间:At examination day 2 and 4.
Protein abundance will be studied in skeletal muscle and adipose tissue biopsies by Western blotting procedures.
At examination day 2 and 4.
Phosphorylation of enzymes
大体时间:At examination day 2 and 4.
Phosphorylation of enzymes will be studied in skeletal muscle and adipose tissue biopsies by Western blotting procedures.
At examination day 2 and 4.

其他结果措施

结果测量
措施说明
大体时间
Lipid profile
大体时间:At examination day 2 and 4.
Plasma total cholesterol, HDL-cholesterol, LDL-cholesterol, non-HDL-cholesterol and triglycerides determined by blood tests.
At examination day 2 and 4.
HbA1c
大体时间:At examination day 2 and 4.
Determined by blood tests.
At examination day 2 and 4.
Insulin
大体时间:At examination day 2 and 4.
Determined by blood tests.
At examination day 2 and 4.
Glucose
大体时间:At examination day 2 and 4.
Determined by blood tests.
At examination day 2 and 4.
C-peptide
大体时间:At examination day 2 and 4.
Determined by blood tests.
At examination day 2 and 4.
Levels of systemic low-grade inflammation
大体时间:At examination day 2 and 4.
Circulating levels of adiponectin, leptin, interleukin-6 (IL-6), fibroblast growth factor 21 (FGF21), angiopoietin-like 4 (ANGPTL4) and growth differentiation factor 15 (GDF15) will be measured in bloodsamples.
At examination day 2 and 4.

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

合作者

调查人员

  • 首席研究员:Kurt Højlund, Prof. Dr. med.、Steno Diabetes Center Odense, Odense University Hospital

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)

2026年3月13日

初级完成 (估计的)

2028年1月1日

研究完成 (估计的)

2028年11月1日

研究注册日期

首次提交

2026年2月26日

首先提交符合 QC 标准的

2026年4月28日

首次发布 (实际的)

2026年5月5日

研究记录更新

最后更新发布 (实际的)

2026年5月5日

上次提交的符合 QC 标准的更新

2026年4月28日

最后验证

2026年4月1日

更多信息

与本研究相关的术语

其他研究编号

  • 25/55674

计划个人参与者数据 (IPD)

计划共享个人参与者数据 (IPD)?

是的

药物和器械信息、研究文件

研究美国 FDA 监管的药品

不

研究美国 FDA 监管的设备产品

不

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