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Clinical Trial Summary

The purpose of this study is to examine acute physiological responses to exercise and activity patterns of people with multiple sclerosis (MS) during pregnancy and postpartum.


Clinical Trial Description

Multiple sclerosis (MS) is an inflammatory autoimmune condition of the central nervous system, which causes demyelination of axons, and largely affects females aged 20-40 years. However, knowledge gaps surrounding MS in pregnancy and postpartum remain. Particularly, no research has examined the effects of exercise or physical activity patterns, in people with MS throughout pregnancy and postpartum. Current guidelines for exercise in pregnancy note that people with impairments may safely meet activity recommendations; however, medical consultation is recommended. This study aims to provide information regarding the physiological responses to exercise, as well as the physical activity patterns of pregnant and postpartum people with MS. Numerous studies have found pregnant individuals with MS experience reduced rates of relapse (periods of symptom exacerbation) during pregnancy, most significantly in the third trimester. Additionally, increased rates of relapse in the three months following delivery among people with MS has been commonly observed. These unique periods combined with maternal adaptations during and following pregnancy may impact responses to exercise during and following pregnant in people with MS. To our knowledge, no research has investigated the physiological responses to exercise nor physical activity patterns in individuals with MS during or following pregnancy. These data will be used to develop prospective interventions aimed at determining the causal links between adaptations to pregnancy and postpartum and exercise tolerance in people with MS. They will also be a critical first step towards the eventual development of evidence-based guidelines for pregnant and postpartum people with MS. Pregnant and postpartum individuals will be sent the equipment and questionnaires needed to participate in this virtual study. Participants will complete a 20-minute moderate-intensity exercise bout (60-70% heart rate reserve) using their own cardiovascular exercise equipment or walking outside. During exercise, participants will wear a heart rate monitor to measure heart rate prior to, during and following exercise, as well as complete a fatigue assessment prior-to, immediately, and 30- and 60-minutes following exercise. Additionally, participants will wear a continuous glucose monitor (Freestyle Libre Pro) throughout the exercise and for seven days following exercise. Participants will also wear two non-invasive activity monitoring devices that measure their activity and sedentary time for seven full days. Lastly, participants with MS will track their MS symptoms for seven full days. These data will have implications in understanding the acute cardiovascular response to moderate-intensity exercise among pregnant and postpartum people with MS. This is an important first step in understanding the benefits of pre- and postnatal physical activity among people with MS. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05313204
Study type Observational
Source University of Alberta
Contact
Status Completed
Phase
Start date September 1, 2020
Completion date August 1, 2023

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