Exercise Intervention to Prevent Gestational Diabetes

August 31, 2016 updated by: Wang Chen, Peking University First Hospital

Cycle Study:an Exercise Intervention to Prevent Gestational Diabetes in Overweight and Obese Chinese Pregnant Women

This study evaluates the role of exercise intervention in reducing the risk of gestational diabetes mellitus(GDM) risk of overweight/obese(prepregnancy BMI≥24kg/m^2） Chinese pregnant women. Half of participants will have exercise intervention, while the other half will not. Both of the two group will have regular prenatal care.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

An increasing number of women are entering pregnancy in an overweight or obese state. The overweight/obesity epidemic among women of reproductive age has led to an increasing incidence of gestational diabetes mellitus (GDM)，and other metabolic and obstetric complications, such as fetal macrosomia, maternal obesity and type 2 diabetes.

Exercise may be a non-invasive therapeutic option for preventing and managing GDM that can be readily applied to the antenatal population.But so far, the effects of exercise interventions on the incidence of GDM and other adverse perinatal outcomes have been scarce, especially in Chinese pregnant women.

So the aim of the investigators study is to evaluate whether exercise intervention in overweight/obese(prepregnancy BMI≥24kg/m^2） Chinese pregnant women can reduce their risk of GDM and GDM related adverse pregnant outcomes.

Overweight/obese Chinese pregnant women (prepregnancy BMI≥24kg/m^2） will be randomly divided into exercise intervention group and control group in their first trimester（less than 13 gestational weeks), pregnant women randomised to the exercise intervention group will complete three supervised, exercise sessions each week by using a stational bike, and exercise sessions will be completed on alternate days. Both exercise group and control group have regular prenatal care.

During 24-28 gestatioanl weeks,GDM will be diagnosed by an oral glucose tolerance test (OGTT) according to the new World Health Organization criteria as fasting glucose level in fasting whole blood 5.1 mmol/L or more, or 2-hour value 8.5mmol/L or more.Then the investigators can compare the GDM risk in each group, and find out if exercise intervention can reduce the risk of GDM in overweight/obese Chinese pregnant women.

Following，no matter pregnant women who were diagnosed with GDM in the intervention group or the control group,they will all have standard medical managemen, and continue what they do before until they give birth. That means pregnnat women in the intervention group will continue to have exercise intervention and regular prenatal care despite whether they have GDM or not.

So when they give birth, the investigators can compare pregnant outcomes between four groups, that is exercise group without GDM, exercise group with GDM, control group without GDM and control group with GDM.And the pregnant outcomes include preterm birth rates, fetal birth weight, Aparga score, cesarean rate and so on.

In this study, the investigators will also collect participants' blood samples in first, second and third trimester respectively,and collect cord blood samples, placenta samples,muscle samples and aidpose tissues when they give birh.Thus the investigators can also do some basic reasearch about the potential mechanisms of exercise in preventing GDM.

Study Type

Interventional

Enrollment (Actual)

300

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • China
    • Beijing
      • Beijing, Beijing, China, 100034
        • Peking University First Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 45 years (ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Female

Description

Inclusion Criteria:

  • Chinese overweight/obese(prepregnancy BMI≥24kg/m^2) pregnant women aged between 18 years and 45 years with a singleton live fetus.

Exclusion Criteria:

  • High-risk pregnancies or diseases that could interfere with participation (or both), such as heart insufficiency, infectious diseases, cervical incompetence, multiple pregnancy,serious blood diseases, serious hypertension,absence of prenatal control, risk of premature labour.
  • Prepregnant type 1 or 2 diabetes mellitus.
  • Impaired glucose trolerance (IGT) and impaired fasting glucose(IFG)

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: PREVENTION
  • Allocation: RANDOMIZED
  • Interventional Model: PARALLEL
  • Masking: NONE

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
EXPERIMENTAL: exercise intervention group
Pregnant women randomised to the exercise intervention group will complete three supervised, exercise sessions each week, exercise sessions completed on alternate days, and lasts until they give birth by using a stational bike. And also they will have regular prenatal care.
Behavioral: Stationary bike
NO_INTERVENTION: control group
Pregnant women randomised to the control group only have regular prenatal care.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
the risk of gestational diabetes mellitus
Time Frame: up to 24-28 gestational weeks
GDM will be diagnosed by an oral glucose tolerance test (OGTT) according to the new World Health Organization criteria as fasting glucose level in fasting whole blood 5.1 mmol/L or more, or 2-hour value 8.5mmol/L or more.Then we can use the rate of GDM ocurrence to represent the risk of gestational diabetes mellitus
up to 24-28 gestational weeks

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
weight gain
Time Frame: up to 42 gestatioanl weeks
use a same scale to measure pregnant women's weight before they give birth,and then subtract their weight prepregnancy. And also, we will use BMI increases as another indicator in representing their weight gain
up to 42 gestatioanl weeks
insulin resistance
Time Frame: up to 13, 26 and 39 gestatioanl weeks
measure the insulin concentration in the serum of pregnant women in the early(before 13 gestational weeks), mid( between 25-26 gestatianl weeks)and late-term(between 37-39 gestatioanl weeks) of pregnancy, and define their homeostatic model assessments for insulin resistance (HOMA-IR)
up to 13, 26 and 39 gestatioanl weeks
adipocytes
Time Frame: up to 13, 26 and 39 gestatioanl weeks
measure the adipocytes concentrations in the serum of pregnant women in the early(before 13 gestational weeks), mid( between 25-26 gestatianl weeks)and late-term(between 37-39 gestatioanl weeks) of pregnancy, also measure them in the cord blood serum by ELISA.
up to 13, 26 and 39 gestatioanl weeks
inflammatory factor
Time Frame: up to 13, 26 and 39 gestatioanl weeks
measure the inflammatory factor concentrations in the serum of pregnant women in the early(before 13 gestational weeks), mid( between 25-26 gestatianl weeks)and late-term(between 37-39 gestatioanl weeks) of pregnancy, also measure them in the cord blood serum by ELISA.
up to 13, 26 and 39 gestatioanl weeks
pregnancy outcome
Time Frame: up to 42 gestational weeks
collect data about birth weight, Aparga score, duration of pregnancy and delivery mode
up to 42 gestational weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Peking University First Hospital

Investigators

  • Principal Investigator: Yu-mei Wei, MD, Mrs
  • Principal Investigator: Chen Wang, PhD, Ms

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

December 1, 2014

Primary Completion (ACTUAL)

April 1, 2016

Study Completion (ACTUAL)

July 1, 2016

Study Registration Dates

First Submitted

November 24, 2014

First Submitted That Met QC Criteria

November 26, 2014

First Posted (ESTIMATE)

December 2, 2014

Study Record Updates

Last Update Posted (ESTIMATE)

September 2, 2016

Last Update Submitted That Met QC Criteria

August 31, 2016

Last Verified

August 1, 2016

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 400010558

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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