Gestational DiabetesNCT03641170
The Acute Effect of Physical Activity on Postprandial Blood Glucose in Pregnant Women
A study testing Physical activity, Inactivity and Fixed diet. in people with Gestational Diabetes, run by University of Aarhus at 1 site in Denmark.
Trial summary
The aim of the project is to investigate the acute effect of exercise on blood glucose after food consumption. Thereby the investigators wish to achieve knowledge that can improve prevention and treatment of gestational overweight and gestational diabetes mellitus (GDM). Read more about this study
- Who is it for?
- Ages 18 years and older, women onlyHealthy volunteers can take part
- Conditions the study is for
- Gestational Diabetes
- What is being tested?
- Physical activity, Inactivity and Fixed diet.
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 18 participants
- Where
- 1 siteDenmark
- Study dates
- 3 Apr 2018to 31 Jan 2021
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- Women only
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Pregnant women over age of 18
- according to each group: BMI: 18,5-24,9; BMI: >25; women with GDM.
Who cannot join
- women with a physical disability that affects their movement will be excluded from the study
Trial locations and contacts
1 site in 1 country.
Denmark1 site
Department of Obstetrics and Gynecology, Aarhus University Hospital
Aarhus, 8200
About this study
The aim of the project is to investigate the acute effect of exercise on blood glucose after food consumption. Thereby the investigators wish to achieve knowledge that can improve prevention and treatment of gestational overweight and gestational diabetes mellitus (GDM). This will prevent serious complications during pregnancy and birth, but also long term complications like type 2 diabetes mellitus (T2DM) for both the mother and the offspring.
Inclusion will be 60 pregnant women divided into three groups - normal weight, overweight and obese and women with gestational diabetes. Participants will receive a fixed diet and go through an intervention period with physical activity immediately after each main meal and a control period with inactivity after the meals. Blood glucose will be the main outcome.
Read the detailed description
Design: Crossover controlled study. Cases: 60 pregnant women recruited at the Department of Obstetrics and Gynecology, Aarhus University Hospital (AUH). Subjects will receive both written and oral information before entering the trial. According to their prepregnancy BMI, subjects will be recruited for three different groups: i) normal weight (BMI 18,5-24,9), ii) overweight and obese (BMI ≥ 25) and iii) GDM. 20 women in each group. Group i and ii will be recruited at the routine ultrasound scan at gestational week 19. Group iii will be recruited after the Oral Glucose Tolerance Test (OGTT) that diagnoses gestational diabetes mellitus. The routine OGTT is done at gestational week 28. When diagnosed with GDM the women are referred to Department of Obstetrics and Gynecology, AUH, and the investigators will recruit participants from here. Participants will be examined during gestational week 30-34 where insulin resistance peaks during pregnancy.
Intervention: Participants will receive a fixed diet for a total of 8 days. The 8 days of fixed diet are split into a 4 days intervention period and a 4 days control period separated by two days of regular food intake. The two days of regular food intake will function as a "wash out period" to avoid carry over effect. During the 4 days intervention period the participants will perform 30 minutes of interval walking immediately after each main meal. The interval walking consists of alternating fast and slow intervals (3 minutes each) aiming at > 70% and < 40% of peak energy expenditure measured by the Sensewear Armband. During the 4 days control period the participants will be normally active, not performing any set physical activity. Participants will be randomized to the order of the two periods.
Study variables: Fasting blood samples will be taken on the first day of both the intervention and control period and on the morning after the last day of each period. Blood samples will be analyzed for blood glucose, HbA1c, C-peptide and lipid profile (triglycerides, HDL and LDL).
During the entire experimental period, movement data will be collected using the Sensewear Armband. Blood glucose will be monitored continuously using the IPro2 Continuous Glucose Monitor (CGM) from Medtronic.
The diet will consist of three main meals and three snacks and will be calculated to match their metabolic need. The calculations will be done by a nutrition specialist and will include weight, height, BMI and energy need during 3rd trimester pregnancy.
Data on demography, family history of diabetes, prepregnancy BMI, gestational weight gain and complications during pregnancy are collected from medical records of the patients and their offspring.
- Conditions
- Gestational Diabetes
- Being tested
- Physical activity, Inactivity, Fixed diet.
- Medical subject headings
- Diabetes, Gestational
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Physical activityBehavioural
Interval walking performed after each main meal.
InactivityBehavioural
Inactivity after each main meal.
Fixed diet.Other
Participants will receive a fixed diet through out the intervention period and control period.
| Study group | Role | What they receive |
|---|---|---|
| Experimental intervention | Experimental | Fixed diet and physical activity. Receives: Behavioral: Physical activity; Other: Fixed diet. |
| Control intervention | Other | Fixed diet and inactivity. Receives: Behavioral: Inactivity; Other: Fixed diet. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Blood glucose
Differences in blood glucose between experimental intervention (physical activity) and control intervention (inactivity).
Measured: Through intervention periods of 4 days.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted21 Aug 2018
- Study start3 Apr 2018
- Primary completion31 Jan 2021
- Study completion31 Jan 2021
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Gestational DiabetesStudies of the same condition, open and under way.
- More trials run by University of AarhusThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Enrolment
- 18 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Aarhus
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Per Ovesen, MD, Prof., Study director, Aarhus University Hospital / University of Aarhus
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03641170
- Sponsor's protocol ID
- Diet study
- Status last verified
- Jan 2021
- First submitted
- 9 Apr 2018
- Last updated
- 21 Apr 2021
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Andersen MB, Fuglsang J, Ostenfeld EB, Poulsen CW, Daugaard M, Ovesen PG. Postprandial interval walking-effect on blood glucose in pregnant women with gestational diabetes. Am J Obstet Gynecol MFM. 2021 Nov;3(6):100440. doi: 10.1016/j.ajogmf.2021.100440. Epub 2021 Jun 30.
PubMed 34216833
Study at a glance
From the registry record, last updated by the sponsor on 21 Apr 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Acute Effect of Physical Activity on Postprandial Blood Glucose in Pregnant Women
- ClinicalTrials.gov ID
- NCT03641170
- Acronym / sponsor ID
- Diet study
- Conditions
- Gestational Diabetes
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 18 participants (actual)
- Lead sponsor
- University of AarhusUniversity, hospital or other
- Study start
- 3 Apr 2018 (actual)
- Primary completion
- 31 Jan 2021 (actual)
- Study completion
- 31 Jan 2021 (actual)
- First posted
- 21 Aug 2018 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The aim of the project is to investigate the acute effect of exercise on blood glucose after food consumption. Thereby the investigators wish to achieve knowledge that can improve prevention and treatment of gestational overweight and gestational diabetes mellitus (GDM). This will prevent serious complications during pregnancy and birth, but also long term complications like type 2 diabetes mellitus (T2DM) for both the mother and the offspring.
Inclusion will be 60 pregnant women divided into three groups - normal weight, overweight and obese and women with gestational diabetes. Participants will receive a fixed diet and go through an intervention period with physical activity immediately after each main meal and a control period with inactivity after the meals. Blood glucose will be the main outcome.
Detailed description
Design: Crossover controlled study. Cases: 60 pregnant women recruited at the Department of Obstetrics and Gynecology, Aarhus University Hospital (AUH). Subjects will receive both written and oral information before entering the trial. According to their prepregnancy BMI, subjects will be recruited for three different groups: i) normal weight (BMI 18,5-24,9), ii) overweight and obese (BMI ≥ 25) and iii) GDM. 20 women in each group. Group i and ii will be recruited at the routine ultrasound scan at gestational week 19. Group iii will be recruited after the Oral Glucose Tolerance Test (OGTT) that diagnoses gestational diabetes mellitus. The routine OGTT is done at gestational week 28. When diagnosed with GDM the women are referred to Department of Obstetrics and Gynecology, AUH, and the investigators will recruit participants from here. Participants will be examined during gestational week 30-34 where insulin resistance peaks during pregnancy.
Intervention: Participants will receive a fixed diet for a total of 8 days. The 8 days of fixed diet are split into a 4 days intervention period and a 4 days control period separated by two days of regular food intake. The two days of regular food intake will function as a "wash out period" to avoid carry over effect. During the 4 days intervention period the participants will perform 30 minutes of interval walking immediately after each main meal. The interval walking consists of alternating fast and slow intervals (3 minutes each) aiming at > 70% and < 40% of peak energy expenditure measured by the Sensewear Armband. During the 4 days control period the participants will be normally active, not performing any set physical activity. Participants will be randomized to the order of the two periods.
Study variables: Fasting blood samples will be taken on the first day of both the intervention and control period and on the morning after the last day of each period. Blood samples will be analyzed for blood glucose, HbA1c, C-peptide and lipid profile (triglycerides, HDL and LDL).
During the entire experimental period, movement data will be collected using the Sensewear Armband. Blood glucose will be monitored continuously using the IPro2 Continuous Glucose Monitor (CGM) from Medtronic.
The diet will consist of three main meals and three snacks and will be calculated to match their metabolic need. The calculations will be done by a nutrition specialist and will include weight, height, BMI and energy need during 3rd trimester pregnancy.
Data on demography, family history of diabetes, prepregnancy BMI, gestational weight gain and complications during pregnancy are collected from medical records of the patients and their offspring.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Experimental intervention | Experimental | Behavioral: Physical activity, Other: Fixed diet.Fixed diet and physical activity. |
| Control intervention | Other | Behavioral: Inactivity, Other: Fixed diet.Fixed diet and inactivity. |
Who may qualify
- Ages
- 18 years and older
- Sex
- Female only
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (2 listed)
- Pregnant women over age of 18
- according to each group: BMI: 18,5-24,9; BMI: >25; women with GDM.
Key exclusion criteria (1 listed)
- women with a physical disability that affects their movement will be excluded from the study
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Physical activityInterval walking performed after each main meal. | Behavioural | Experimental intervention |
| InactivityInactivity after each main meal. | Behavioural | Control intervention |
| Fixed diet.Participants will receive a fixed diet through out the intervention period and control period. | Other | Control intervention, Experimental intervention |
Primary outcome
Blood glucose
Time frame: Through intervention periods of 4 days.
Differences in blood glucose between experimental intervention (physical activity) and control intervention (inactivity).
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 21 Apr 2021.
- Derived from this study: PubMed 34216833Andersen MB, Fuglsang J, Ostenfeld EB, Poulsen CW, Daugaard M, Ovesen PG. Postprandial interval walking-effect on blood glucose in pregnant women with gestational diabetes. Am J Obstet Gynecol MFM. 2021 Nov;3(6):100440. doi: 10.1016/j.ajogmf.2021.100440. Epub 2021 Jun 30.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Per Ovesen, MD, Prof. study director
Aarhus University Hospital / University of Aarhus
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Physical activity, Inactivity and Fixed diet. in people with Gestational Diabetes, run by University of Aarhus at 1 site in Denmark.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 2 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 21 Apr 2021. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Denmark. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Blood glucose (time frame: Through intervention periods of 4 days.). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT03641170, which also lists 1 linked publication.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 21 Apr 2021.