MAMA Tot - Healthy Weight Parallel Study

NCT ID: NCT06598098

Last Updated: 2024-09-19

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

268 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-10-18

Study Completion Date

2027-08-30

Brief Summary

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The overall objective of this proposal is to conduct a longitudinal prospective study of healthy pregnant women and their offspring to determine which antenatal maternal exercise mode(s) will have the greatest impact on maternal and infant cardiometabolic health. This information may lead to modified clinical practice recommendations that improve health in childhood and possibly beyond. This randomized controlled trial will recruit 268 healthy pregnant women randomized to an exercise intervention (aerobic exercise, resistance exercise, aerobic and resistance exercise) or to no exercise (usual care); their infants will be measured at 1, 6, and 12 months of age. This rigorous design will test our central hypothesis that aerobic and resistance exercise and resistance exercise training during pregnancy will, in healthy weight BMI (HW) women, improve maternal and offspring cardiometabolic outcomes to a greater extent than AE alone. We will test this hypothesis with two specific aims:

Aim 1. Determine the influence of different exercise modes during HW pregnancy on infant cardiometabolic health and growth trajectories. Hypothesis: AE, RE, and AERE by HW pregnant women will improve offspring neuromotor and cardiometabolic measures at 1, 6, and 12 months postpartum (e.g. decreased % body fat, BMI z-score, heart rate, non-HDL, and C-Reactive Protein (CRP); increased insulin sensitivity) compared to infants of HW pregnant women that do not exercise; AERE and RE will have the greatest impact on improving infant measures.

Aim 2. Determine the most effective exercise mode in HW pregnancy on improving maternal cardiometabolic health outcomes. Hypothesis: AE, RE, and AERE by HW pregnant women will improve both maternal cardiometabolic health measures (e.g. decreased BMI z-score, non-HDL, % body fat, HR, weight gain) across pregnancy (16 to 36 weeks gestation) and overall pregnancy outcomes (e.g. lower incidence of gestational diabetes, pre-eclampsia, hypertension during gestation) compared to HW pregnant women that do not exercise; AERE and RE will have the greatest impact on improving maternal health measures, with the AERE group having the highest compliance.

The proposed innovative study will be the first to provide a critical understanding of the influence of antenatal exercise modes upon the cardiometabolic health and growth trajectories of offspring who may be at increased risk of poor outcomes. This work will have a significant impact on reducing the cycle of OB and CVD, potentially providing the earliest and most efficacious intervention to attenuate or prevent OB and CVD in the next generation.

Detailed Description

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Conditions

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Pregnancy Related

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Pregnant women will be randomized to one of four groups: aerobic exercise, resistance exercise, combination (aerobic + resistance), or control (no exercise). All exercise participants will be prescribed exercise that meets guidelines of the American College of Obstetricians and Gynecologists (ACOG), American College of Sports Medicine (ACSM), and the American Heart Association (AHA); 150 minutes per week, moderate intensity (60-80% aerobic capacity, Rating of Perceived Exertion, rating of perceived exertion (RPE), 12-15) per week. These limits are the same as those that generated previous positive findings for our preliminary data.
Primary Study Purpose

PREVENTION

Blinding Strategy

TRIPLE

Caregivers Investigators Outcome Assessors

Study Groups

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Aerobic Exercise (AE)

All exercise participants will be prescribed exercise that meets guidelines of the American College of Obstetricians and Gynecologists (ACOG), American College of Sports Medicine (ACSM), and the American Heart Association (AHA); 150 minutes per week, moderate intensity (60-80% aerobic capacity, Rating of Perceived Exertion, RPE, 12-15) per week. These limits are the same as those that generated previous positive findings for our preliminary data. The AE group will exercise on aerobic machines (i.e. treadmill, elliptical, bicycle) for all of their sessions.

Group Type EXPERIMENTAL

Exercise Modes

Intervention Type BEHAVIORAL

Moderate intensity aerobic exercise, moderate intensity resistance exercise, moderate intensity combination exercise

Resistance Exercise (RE)

All exercise participants will be prescribed exercise that meets guidelines of the American College of Obstetricians and Gynecologists (ACOG), American College of Sports Medicine (ACSM), and the American Heart Association (AHA); 150 minutes per week, moderate intensity (60-80% aerobic capacity, Rating of Perceived Exertion, RPE, 12-15) per week. These limits are the same as those that generated previous positive findings for our preliminary data. The RE group will perform 12-15 repetitions of 10-12 resistance exercises in a circuit, for 3 sets with rest period of 30-60 seconds between sets as needed.\[100\] Seated isokinetic exercise using Cybex machines will target all major muscle groups. Light dumbbells and resistance bands will be used if the participant is unable to lift the minimal load on Cybex machines. Core exercises will be performed at the end of the session (i.e. seated side bends).

Group Type EXPERIMENTAL

Exercise Modes

Intervention Type BEHAVIORAL

Moderate intensity aerobic exercise, moderate intensity resistance exercise, moderate intensity combination exercise

Combination Exercise (AERE)

All exercise participants will be prescribed exercise that meets guidelines of the American College of Obstetricians and Gynecologists (ACOG), American College of Sports Medicine (ACSM), and the American Heart Association (AHA); 150 minutes per week, moderate intensity (60-80% aerobic capacity, Rating of Perceived Exertion, RPE, 12-15) per week. These limits are the same as those that generated previous positive findings for our preliminary data. The AERE group will switch between AE exercise and RE; for this group, RE exercises will consist of 1 set of 12-15 repetitions of 4 resistance exercises, then 5 minutes of AE, then repeated repeat with different exercises.\[106-108\] The investigators will also calculate the metabolic minutes per week (METmin/wk) of all participants in order to account for potential differences in energy expenditure based on activity, though the dose of 150 min/wk at moderate intensity is held constant between exercise groups.

Group Type EXPERIMENTAL

Exercise Modes

Intervention Type BEHAVIORAL

Moderate intensity aerobic exercise, moderate intensity resistance exercise, moderate intensity combination exercise

Control (no exercise)

The Control group will participate in weekly sessions that focus on stretching, breathing, and healthy lifestyle.

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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Exercise Modes

Moderate intensity aerobic exercise, moderate intensity resistance exercise, moderate intensity combination exercise

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* Age: 18 to 40 years old
* BMI 18.5 to 24.4
* Pregnancy: Singleton; ≤ 16 weeks gestation
* Clearance by Obstetric provider for exercise

Exclusion Criteria

* Age: ≤ 17.9 or ≥ 41 years of age
* BMI ≥25
* Multi fetal pregnancy
* Obstetric Provider does not provide clearance for exercise
* Unable or Unwilling to provide consent
* Inability to communicate with members of study team, despite use of interpreter
* Medical Conditions (e,g. HIV/Aids, Cancer, Type 1 or 2 Diabetes, Untreated Hypertension, Thyroid Disorders)
* Use of tobacco products, alcohol, recreational drugs, or medications (oral hypertensive, insulin)
* Unable to provide phone or email contact
Minimum Eligible Age

18 Years

Maximum Eligible Age

40 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

Yes

Sponsors

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East Carolina University

OTHER

Sponsor Role lead

Responsible Party

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Linda May

Associate Professor; Dept. Chair

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Linda May, MS, PhD

Role: PRINCIPAL_INVESTIGATOR

East Carolina University

Locations

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East Carolina University

Greenville, North Carolina, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Linda E May, MS, PhD

Role: CONTACT

252-737-7072

Jameta Edwards

Role: CONTACT

252-737-7156

Facility Contacts

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Linda E May, MS, PhD

Role: primary

252-737-7072

James DeVente, MD

Role: backup

Linda E May, MS, PhD

Role: backup

Other Identifiers

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20-002367

Identifier Type: -

Identifier Source: org_study_id

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