Physical Activity and Vascular Health During Pregnancy
27. februar 2019 opdateret af: Áine Brislane, Liverpool John Moores University
Can Physical Activity During Pregnancy Improve Maternal and Offspring Vascular Health?
The aim of this study is to determine the effect of aerobic exercise on maternal and offspring vascular health.
Studieoversigt
Detaljeret beskrivelse
The study will comprise of a randomised pilot trial to assess the effect of a moderate intensity exercise intervention on maternal and offspring vascular health.
Participants will be recruited in the first trimester (T1, 10-12 weeks' gestation), and will be randomized to either a 24-week, structured and partially supervised, gym-based exercise intervention beginning in trimester 2 (T2) through to trimester 3 (T3), or a non-exercise control group who receive normal clinical care.
The inclusion of this non-exercise control group is critical in allowing us to create an understanding of the adaptation of the vascular system during a normal (non-exercising) pregnancy, and also determining the physical activity and sedentary behaviour engaged in during normal healthy pregnancy.
All participants will be asked to attend the laboratory at Liverpool John Moores University on 4 separate occasions synchronised with the end point of each trimester and then within four weeks of delivery.
Maternal vascular health, physical activity, sedentary behaviour and fitness will be assessed during each time point throughout pregnancy while the fourth visit will comprise of an offspring vascular assessment.
The investigators will also gain information on delivery outcomes including pre-term delivery, complications during labour, induction of labour, caesarean sections and post-partum haemorrhage via medical notes at the Liverpool Women's NHS Foundation Trust.
Undersøgelsestype
Interventionel
Tilmelding (Forventet)
20
Fase
- Ikke anvendelig
Kontakter og lokationer
Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.
Studiesteder
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Merseyside
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Liverpool, Merseyside, Det Forenede Kongerige, L33AF
- Research Institute for Sport and Exercise Sciences (RISES)
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Deltagelseskriterier
Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.
Berettigelseskriterier
Aldre berettiget til at studere
18 år til 45 år (Voksen)
Tager imod sunde frivillige
Ja
Køn, der er berettiget til at studere
Kvinde
Beskrivelse
Inclusion Criteria:
- Healthy pregnant female
- No history of cardiovascular disease, gestational diabetes or pre-eclampsia
- Single gestation
- Not on medication affecting cardiovascular health
- A non-smoker for at least 6 months
- Participating in structured exercise <twice/week
- BMI <30kg/m^2 -
Exclusion Criteria:
- Royal College of Obstetricians and Gynaecologists (RCOG) contraindications for pregnancy
- Pregnant by in-vitro fertilisation (IVF)exercise
- BMI >30kg/m^2
- >45 years old
- Structured exercise >twice/week
- Multiple gestation
- Disability preventing ambulation
- Currently smoking or smoking within past 6 months prior to pregnancy
- Non-English speaking women
Studieplan
Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Andet
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Enkelt
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
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Eksperimentel: Exercise
Participants randomized to the exercise intervention group will be required to complete a 24-wk partially supervised exercise programme consisting of 3-4 sessions per week of 15 minutes progressing to 30 minutes over time.
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Previously inactive pregnant women will be asked to complete 3-4 sessions of aerobic exercise each week for 24 weeks of 15-30 minutes in duration.
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Ingen indgriben: Control
Those randomized to the control group will continue with their standard care.
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Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Change in Vascular Function
Tidsramme: Change from baseline at week 24 and 36 of pregnancy
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Vascular function will be measured via endothelial-dependent flow-mediated dilation (FMD) of the brachial and femoral arteries and reported as percentage change.
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Change from baseline at week 24 and 36 of pregnancy
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Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Change in Sedentary behaviour
Tidsramme: Change from baseline at week 24 and 36 of pregnancy
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Sedentary behaviour will be measured using an inclinometer at the end of each trimester for a period of 7 days in line with the accelerometer monitoring and will be reported in minutes.
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Change from baseline at week 24 and 36 of pregnancy
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Change in Physical activity
Tidsramme: Change from baseline at week 24 and 36 of pregnancy
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Physical activity will be monitored for a period of 7 days using accelerometry at the end of each trimester.
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Change from baseline at week 24 and 36 of pregnancy
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Incidence of Pregnancy specific outcomes
Tidsramme: Following delivery and within 4 weeks
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Following delivery the investigator will obtain information regarding pregnancy specific outcomes including pre-term birth, delivery complications, induction of labour, caesarean section and post-partum haemorrhage via medical notes at the collaborating hospital.
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Following delivery and within 4 weeks
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Andre resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Offspring Vascular Structure
Tidsramme: Assessed within 4 weeks of delivery
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Offspring vascular structure will be assessed at the abdominal aorta site using ultrasound imaging.
Wall thickness will be measured at three different angles of an optimised ultrasound image.
The image will be adjusted so that artery wall thickness can be clearly seen and a 30 second recording taken at three different angles.
The average of the three angles will be calculated for each artery.
Results will be reported as change in millimetres at each time point for each artery assessed.
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Assessed within 4 weeks of delivery
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Change in Cerebrovascular Function
Tidsramme: Change from baseline at week 24 and 36 of pregnancy
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Change in cerebrovascular function will be assessed using transcranial Doppler ultrasound to measure brain blood flow velocity.
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Change from baseline at week 24 and 36 of pregnancy
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Change in Vascular Structure
Tidsramme: Change from baseline at week 24 and 36 of pregnancy
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Vascular structure will be measured at carotid, femoral and brachial arteries using ultrasound imaging to clearly visualise the artery.
The image will be adjusted so that artery wall thickness can be clearly seen and a 30 second recording taken at three different angles.
The average of the three angles will be calculated for each artery.
Results will be reported as change in millimetres at each time point for each artery assessed.
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Change from baseline at week 24 and 36 of pregnancy
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Samarbejdspartnere og efterforskere
Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.
Sponsor
Samarbejdspartnere
Efterforskere
- Studieleder: Nicola Hopkins, PhD, Dr.
Publikationer og nyttige links
Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.
Datoer for undersøgelser
Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.
Studer store datoer
Studiestart (Faktiske)
23. april 2017
Primær færdiggørelse (Forventet)
30. maj 2019
Studieafslutning (Forventet)
3. august 2019
Datoer for studieregistrering
Først indsendt
28. februar 2017
Først indsendt, der opfyldte QC-kriterier
8. marts 2017
Først opslået (Faktiske)
14. marts 2017
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
28. februar 2019
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
27. februar 2019
Sidst verificeret
1. februar 2019
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Andre undersøgelses-id-numre
- 17/NW/0056
Plan for individuelle deltagerdata (IPD)
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