NCT03748888

Brief Summary

The main theme of this study focuses on providing evidence of the impact of antenatal physical activity on maternal/foetal cardiovascular changes during pregnancy and maternal cardiovascular adaptations during the early postpartum period.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
138

participants targeted

Target at P50-P75 for not_applicable

Timeline
Completed

Started Apr 2018

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

April 26, 2018

Completed
7 months until next milestone

First Submitted

Initial submission to the registry

November 13, 2018

Completed
8 days until next milestone

First Posted

Study publicly available on registry

November 21, 2018

Completed
3 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

November 30, 2021

Completed
1 month until next milestone

Study Completion

Last participant's last visit for all outcomes

December 31, 2021

Completed
Last Updated

October 26, 2022

Status Verified

October 1, 2022

Enrollment Period

3.6 years

First QC Date

November 13, 2018

Last Update Submit

October 25, 2022

Conditions

Keywords

Cardiovascular systemAntenatal physical activityMaternal heart rateFoetal heart rate

Outcome Measures

Primary Outcomes (4)

  • Changes in maternal cardiac output during and after pregnancy.

    Maternal cardiac output at rest, during exercise and after exercise measured in L/min would be recorded from study participants to analyse and compare potential changes inter and intra group.

    18 and 36 weeks of gestation, 12 weeks postpartum.

  • Changes in maternal heart rate during and after pregnancy.

    Maternal heart rate at rest and after exercise would be recorded in beats per minute to be analysed and compared inter and intra group.

    18 and 36 weeks of gestation, 12 weeks postpartum.

  • Changes in maternal heart rate variability during and after pregnancy

    Maternal heart rate variability at rest, during and after exercise would be measured by r to r interval. It would be recorded and analysed to compare inter and intra group changes.

    18 and 36 weeks of gestation, 12 weeks postpartum.

  • Foetal heart rate

    Foetal heart rate baseline would be measured at rest, during and after exercise. It would be analysed and compared in between groups.

    36 weeks pregnancy

Secondary Outcomes (13)

  • Changes in active pregnant women energy expenditure

    18 and 36 weeks pregnancy.

  • Changes in sedentary pregnant women energy expenditure

    18 and 36 weeks pregnancy.

  • Energy expenditure during the early postpartum period.

    12 weeks postpartum.

  • Gestational weight gain.

    36 weeks pregnancy.

  • Changes in maternal body fat percentage during pregnancy.

    18 and 36 weeks pregnancy.

  • +8 more secondary outcomes

Other Outcomes (7)

  • Type of birth.

    2 weeks postpartum.

  • Type of analgesia used during labour

    2 weeks postpartum.

  • New born's Apgar score

    2 weeks postpartum.

  • +4 more other outcomes

Study Arms (2)

Exercise group

EXPERIMENTAL

An antenatal physical activity (APA) programme will be designed for participants in the exercise group.

Behavioral: Exercise group

Control Group

NO INTERVENTION

Sedentary participants.

Interventions

Exercise groupBEHAVIORAL

An antenatal physical activity (APA) programme will be designed for participants in the exercise group. The APA will last for 20-24 weeks. Participants in the EG must enrol in the APA between their 12-16 weeks of gestation. The APA programme has a frequency of three times a week, which involves aerobic, strength and stretching exercises. The intensity of the APA programme is individually calculated for each participant based on their pre-pregnancy fitness level. Single sessions of the APA programme last 50-60min.

Exercise group

Eligibility Criteria

Age18 Years - 40 Years
Sexfemale
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Women with healthy pregnancy
  • Aged 18-40 years
  • Single pregnancy
  • Pregnancy stage \<= 16 weeks' gestation at the point of consent.
  • Two or fewer previous term pregnancies (as physiology can be altered by multiple pregnancies).

You may not qualify if:

  • Known complications of pregnancy
  • Known contraindications for physical exercise
  • Known major cardiovascular or respiratory pathology
  • Three or more previous term pregnancies
  • Inability to communicate in English or Welsh.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Singleton Hospital, Maternity Unit

Swansea, SA2 8QA, United Kingdom

Location

Related Publications (2)

  • Carpenter RE, Emery SJ, Uzun O, Rassi D, Lewis MJ. Influence of physical exercise on baroreceptor sensitivity during pregnancy. J Matern Fetal Neonatal Med. 2017 Mar;30(5):514-519. doi: 10.1080/14767058.2016.1179275. Epub 2016 May 12.

  • Carpenter RE, D'Silva LA, Emery SJ, Uzun O, Rassi D, Lewis MJ. Changes in heart rate variability and QT variability during the first trimester of pregnancy. Physiol Meas. 2015 Mar;36(3):531-45. doi: 10.1088/0967-3334/36/3/531. Epub 2015 Feb 18.

Study Officials

  • MICHAEL J LEWIS, Prof

    Swansea University

    STUDY CHAIR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
BASIC SCIENCE
Intervention Model
PARALLEL
Model Details: The present study will involve two study groups. 1. Exercise group (EG). Pregnant women allocated in the EG will receive and intervention based on a supervised antenatal physical activity programme during 20-24 weeks. They must be enrolled in the study between their 12-16 weeks of gestation. 2. Control group (CG). Pregnant women allocated in CG will not receive any intervention. They will maintain standard health care during pregnancy.
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

November 13, 2018

First Posted

November 21, 2018

Study Start

April 26, 2018

Primary Completion

November 30, 2021

Study Completion

December 31, 2021

Last Updated

October 26, 2022

Record last verified: 2022-10

Data Sharing

IPD Sharing
Will not share

Locations