- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01940003
Effects of an Aquatic Physical Exercise Program on Glycaemic Control and Perinatal Outcomes of Gestational Diabetes: Study Protocol for a Randomized Controlled Trial
Effects of an Aquatic Physical Exercise Program on Glycemic Control and Perinatal Outcomes of Gestational Diabetes - a Randomized Clinical Trial
Study Overview
Detailed Description
Gestational diabetes mellitus (GDM) is increasing worldwide and has been associated with adverse perinatal outcomes and high risk for chronic disease both for the mother and for the child. Physical exercise is feasible to diabetic pregnant women and contributes to a better glycemic control and to decrease adverse perinatal outcomes. However there are no randomized controlled trials (RCT) assessing the effects of aquatic physical exercise on GDM control and adverse maternal and fetal outcomes.
A RCT will be conducted at Institute of Medicine Professor Fernando Figueira (IMIP), Brazil. IMIP is a reference hospital in the Northeast Brazil for mother and child care and performed about 6,000 deliveries per year. The recruitment of patients will focus on GDM women diagnosed at IMIP that referred to this center for treatment. Obstetrical staff will identify pregnant women recently diagnosed with GDM. These patients will be approached by a member of the study team and ask permission to be forwarded after an explanation of the study goals. GDM women will be considered eligible for enrollment if they fulfill all the inclusion criteria and none of the exclusion criteria. Interested patients will be invited to sign a written informed consent.
Sample size was calculated with the aim of reducing glucose levels by 20% in intervention group. A power of 80% and a level of significance of 5% was accepted and the calculated sample size in each arm was 30 patients. Assuming a drop out of 20%, 72 pregnant women will be included in the study. 36 gestational diabetics will develop an aquatic physical exercise program in a thermal pool, three times per week during two months, and 36 gestational diabetics will receive usual care from IMIP.
To ensure that similar guidelines for GDM clinical treatment are maintained for the two groups, IMIP obstetrical staff will undertake the ongoing GDM management of all trial participants for the period of the study. Participants are usually clinically evaluated at minimum every two weeks depending on GDM control, according to the IMIP guidelines for GDM. A capillary glucose test is performed in each clinical visit. It will be analyzed the mean capillary glucose profile after intervention (minimum of five determinations per woman). Insulin or oral hypoglycemic required will be compared among the two groups.
All pregnant women will wear a pedometer (Yamax Digi Walker SW-200, Tokyo, Japan) during the whole study. Pedometer readings will provide a measure of physical activity to compare both groups. All diabetics pregnant women will be recorded of their clinical history and undertake a cardiologic evaluation.
Randomization will be done according to a computed-generated allocation (www.randomized.com). Pregnant women will be assigned, in a 1:1 ratio, to exercise intervention or usual care. Blinding of the study to the randomization arm is not possible due to the nature of intervention.
Primary endpoint will be glucose levels control (glicemy test) and use of insulin (use or not insulin), secondary endpoints will be the following maternal and fetal outcomes: weight gain during pregnancy, blood pressure, preeclampsia diagnosis, intra-uterus growth restriction, preterm birth, Cesarean section, macrosomia and maternal or neonatal intensive care admission. The information will be acquired through the medical records of patients.
Maternal and fetal characteristics of the study sample will be presented by group, intervention and control in terms of mean and SD. For group comparisons of glucose levels and perinatal variables, continuous and nominal data will be analyzed by t test for unpaired data and χ2 tests, respectively. Data will be analyzed using the intention-to-treat principle. Statistical analysis will be performed with the STATA version 3.1 and the level of significance will set to <0.05.
Even in cases where there is the appearance of some criterion for discontinuation during the intervention (Aquatic physical exercise), the patient will be considered part of the group which was initially included in the randomization (intent to treat) and is not excluded from the study. In order to evaluate the criteria for discontinuation of study will be established a Committee on External Monitoring (CME).
The physical proprieties of water provide aquatic exercises as ideal for pregnant women. An aquatic physical exercise program developed with GDM women in a thermal pool and under a physiotherapist supervision must ensure compliance. It is expected that this study provide evidences to the real role of aquatic physical exercise on GDM control.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
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Pernambuco
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Recife, Pernambuco, Brazil, 50070-550
- Instituto de Medicina Integral Prof. Fernando Figueira
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- GDM diagnosis will be based on International Association of the Diabetes in Pregnancy Study Group (IADPSG), Hyperglycemia and Adverse Pregnancy Outcomes (HAPO) study (2 h 75 g oral glucose tolerance test (OGTT): a fasting glucose ≥ 92 mg/dl or a one hour result of ≥ 80 mg/dl, or a two hour result of ≥ 153 mg/dl;
- Aging 18 to 35 years;
- Physically inactive (< 150' per week based on International Physical Activity Questionnaire.
Exclusion Criteria:
- Kidney disease or collagenosis;
- Previous history of gestational diabetes;
- Diabetes type 1 or type 2;
- Hypertensive disorders related to pregnancy;
- Hemodynamic instability;
- Obstetric labor;
- Vaginal bleeding;
- Cognitive disorder, auditory, visual or motor severely limiting, attested by a medical specialist;
- Skin disorders who have a contraindication to the use of a swimming pool;
- Urinary tract infection;
- Be inserted in the program of regular exercise;
Study Plan
How is the study designed?
Design Details
- Primary Purpose: TREATMENT
- Allocation: RANDOMIZED
- Interventional Model: PARALLEL
- Masking: NONE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
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NO_INTERVENTION: Control
Usual care of service Institute of Medicine Professor Fernando Figueira(IMIP) prenatal
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EXPERIMENTAL: Aquatic exercise
Pool-based exercise classes will be completed in groups of 4 to 6 participants under the instruction of a physiotherapist.
The exercise program will be conducted three times per week and each session lasting 45 minute.
This will be conducted since GDM diagnosis (26-28th gestational week) to the end of the third trimester (38-39th gestational week).
Thus, an average of 30 training sessions will be planned for each pregnant woman.
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The aquatic exercise program will be under the professional guidance of a physiotherapist, with water at a temperature of around 26 to 28°C.
The exercise sessions will be executed following the steps: 1) Heating (stretching and flexibility, static method, during 5'); 2) Aerobic exercise (running, displacements and combined movements of arms and legs, with 1minute interval, to 1minute activity and of during 20') 3) Spot exercises (strength / endurance of the upper and lower limbs and abdomen, using the resistance of water for 15') 4) Relaxation (slow walks for 5').
During the sessions of exercises the pregnant women will have heart rate monitored by the frequency meter (Polar Electro OY) to control the intensity of the exercises that will focus on the range of moderate intensity.
Other Names:
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Glycemic control
Time Frame: one year
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Blood glucose test: maternal glucose levels on third trimester of pregnancy and use of insulin Use of insulin: need to use or not of insulin to control gestational diabetes mellitus. Variable nominal dichotomous yes / no. |
one year
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Intra-uterus growth restriction (fetal ultrasound parameters)
Time Frame: one year
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Intra-uterus growth restriction diagnosis will based on the following findings: birthweight percentile < 10 for gestational age, morphological ultrasound with Doppler (assessment of umbilical blood flow). |
one year
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Prematurity
Time Frame: one year
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Preterm birth (before 37th gestational week).
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one year
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Newborns with macrosomia
Time Frame: one year
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Cesarean section Birth injury Macrosomia (birth weight > 4,000g).
Nominal variable, dichotomous yes or no.
|
one year
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Weight gain in pregnancy
Time Frame: one year
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Weight measured at the end of pregnancy minus pre-pregnancy weight informed by pregnant woman (cm)
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one year
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Maternal or neonatal intensive care admission
Time Frame: one year
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Nominal variable, dichotomous yes or no.
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one year
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Systolic and diastolic blood pressure
Time Frame: one year
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Measured in mmHg every medical consultation
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one year
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Preeclampsia diagnosis
Time Frame: one year
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blood hypertension (levels of systolic blood pressure ≥ 140 mmHg and / or diastolic blood pressure ≥ 90 mmHglevels of systolic blood pressure ≥ 140 mmHg and / or diastolic blood pressure ≥ 90 mmHg) associated with proteinuria
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one year
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Cesarean section
Time Frame: one year
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Nominal variable, dichotomous yes or no.
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one year
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Birth injury
Time Frame: one year
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Be will considered any kind of injury of the newborn occurred during delivery.
Nominal variable, dichotomous yes or no.
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one year
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Collaborators and Investigators
Collaborators
Investigators
- Principal Investigator: José Roberto da Silva Junior, Master, Institute of Medicine Professor Fernando Figueira
- Study Director: João Guilherme Bezerra Alves, doctorate, Institute of Medicine Professor Fernando Figueira
- Study Chair: Paulo Sergio Gomes Nogueira Borges, Master, Institute of Medicine Professor Fernando Figueira
- Study Chair: Karine Ferreira Agra, Master, Institute of Medicine Professor Fernando Figueira
- Study Chair: Isabelle Eunice de Albuquerque Pontes, Master, Institute of Medicine Professor Fernando Figueira
Publications and helpful links
Study record dates
Study Major Dates
Study Start
Primary Completion (ACTUAL)
Study Completion (ACTUAL)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ESTIMATE)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- U1111-1147-1141
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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