Interval Versus Continuous Exercise During Pregnancy

NCT05369247 | Completed

• 1 other identifier: Pro00103630
• Study Type: interventional
• Target: 32
• Locations: 1 country
• Sites: 1

Brief Summary

The objective of this randomized cross-over design was to investigate the fetal well-being and maternal glycemic response to an acute bout of aerobic high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) with pregnant individuals.

Conditions

Pregnancy Related; Glucose, Low Blood; Fetal Heart Rate or Rhythm Abnormality Affecting Fetus; Fetal Blood Flow

Outcome Measures

Primary Outcomes (3)

• Flash Glucose Monitor; interstitial Glucose

  Measured by a Flash Glucose monitor inserted onto the back of the left tricep

  7-days

• Fetal Heart Rate

  Measured via ultrasound pre and post exercise

  3-minutes

• Fetal Umbilical Blood Flow

  Measured Via ultrasound pre and post exercise

  3-minutes

Secondary Outcomes (27)

• Maternal Heart Rate

  40-minutes

• Accelerometer

  7-days

• Food Log

  7-days

• Perceived rating of perceived exertion

  40-minutes

• Cardiovascular fitness

  20-minutes

Study Arms (2)

1st Exercise session

EXPERIMENTAL

Participants completed either the HIIT or MICT session.

Other: High intensity Interval Training; Other: Moderate Intensity Continuous Training

2nd Exercise session

EXPERIMENTAL

Participants completed the subsequent exercise protocol (i.e. HIIT or MICT)

Other: High intensity Interval Training; Other: Moderate Intensity Continuous Training

Interventions

High intensity Interval Training OTHER

HIIT protocol consisted of 10 one-minute intervals of high-intensity work (i.e., \> 90% HRmax) interspersed with nine one-minute intervals of self-paced active recovery (19-minutes total).

1st Exercise session; 2nd Exercise session

Moderate Intensity Continuous Training OTHER

The MICT protocol consisted of 30-minutes of moderate intensity cycling (i.e., 64 - 76% HRmax).

1st Exercise session; 2nd Exercise session

Eligibility Criteria

• Age: 18 Years - 50 Years
• Sex: female
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Carrying a singleton pregnancy (i.e. greater than or equal to 20 weeks of gestation).
• Has access to a stationary bike
• Located within Canada and/or within Edmonton Alberta

You may not qualify if:

• History of smoking within the last year
• Taking medications that may interfere with cardiovascular function.
• High-order pregnancies, e.g. twins or above.
• Females with absolute contraindications (as outlined by the Canadian Guidelines for Physical Activity throughout Pregnancy and the PARMed-X questionnaire)

Sponsors & Collaborators

• University of Alberta: lead

Study Sites (1)

University of Alberta

Edmonton, Alberta, T6G 2R3, Canada

Location

Related Publications (1)

• Wowdzia JB, Hazell TJ, Berg ERV, Labrecque L, Brassard P, Davenport MH. Maternal and Fetal Cardiovascular Responses to Acute High-Intensity Interval and Moderate-Intensity Continuous Training Exercise During Pregnancy: A Randomized Crossover Trial. Sports Med. 2023 Sep;53(9):1819-1833. doi: 10.1007/s40279-023-01858-5. Epub 2023 May 22.

  PMID: 37213048 DERIVED

MeSH Terms

Interventions

High-Intensity Interval Training

Intervention Hierarchy (Ancestors)

Physical Conditioning, Human; Exercise; Motor Activity; Movement; Musculoskeletal Physiological Phenomena; Musculoskeletal and Neural Physiological Phenomena

Study Officials

• Margie H Davenport, PhD

  University of Alberta

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: BASIC SCIENCE
• Intervention Model: CROSSOVER
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: March 28, 2022
• First Posted: May 11, 2022
• Study Start: December 1, 2020
• Primary Completion: December 30, 2022
• Study Completion: December 30, 2022
• Last Updated: January 20, 2023

Record last verified: 2022-10

Locations

CA (1)