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Time-restricted Eating and High-intensity Interval Training After Gestational Diabetes (TRE-HIITmoms)

17. srpna 2026 aktualizováno: Norwegian University of Science and Technology

Time-restricted Eating and High-intensity Interval Training After Gestational Diabetes (TRE-HIIT Moms)

This trial will recruit participants who had gestational diabetes in their most previous pregnancy. Participants will be randomly allocated into two groups: one intervention group and one control group 6-12 weeks after giving birth. The intervention group will undergo an 8-week supervised intervention consisting of time-restricted eating and endurance exercise training with moderate-to-high intensity. The investigators will assess cardiorespiratory fitness, body composition, and other markers of cardiovascular and metabolic health before and after the 8 weeks. Additionally, the participants in the intervention group will be encouraged to continue exercising and eating time restricted after the supervised period and follow them up by telephone until one year from the baseline visit. The investigators will measure the same outcomes at the follow-up as on the previous two test points.

Přehled studie

Detailní popis

TREHIIT Moms is a randomised, controlled trial with two parallel groups. To be eligible for the trial, the participants need to have had gestational diabetes in their most previous pregnancy and be 6-12 weeks postpartum at inclusion. Participants will be randomly allocated to intervention or control (1:1). The intervention consist of time-restricted eating and endurance exercise. Time-restricted eating implies restricting energy intake to a maximum 10-hour time window daily. The exercise training will be supervised and consist of 2-4 weekly sessions of moderate-to-high intensity exercise. After the supervised period, the participants will continue high-intensity exercise and time-restricted eating at home, with follow-up from the researchers until 1 year from baseline.

The investigators will assess cardiometabolic health outcomes and psychological well-being at baseline, after 8 weeks, and 1 year. Human milk samples will be collected at baseline and 8 weeks and stored for future exploratory analyses of milk composition. The specific analytes and analytical methods will be determined in subsequent exploratory studies and are not prespecified trial outcomes

Typ studie

Intervenční

Zápis (Odhadovaný)

56

Fáze

  • Nelze použít

Kontakty a umístění

Tato část poskytuje kontaktní údaje pro ty, kteří studii provádějí, a informace o tom, kde se tato studie provádí.

Studijní kontakt

Studijní záloha kontaktů

Studijní místa

      • Trondheim, Norsko, 7491
        • Department of Circulation and Medical Imaging
        • Vrchní vyšetřovatel:
          • Trine Moholdt, PhD
        • Kontakt:
        • Kontakt:

Kritéria účasti

Výzkumníci hledají lidi, kteří odpovídají určitému popisu, kterému se říká kritéria způsobilosti. Některé příklady těchto kritérií jsou celkový zdravotní stav osoby nebo předchozí léčba.

Kritéria způsobilosti

Věk způsobilý ke studiu

  • Dospělý

Přijímá zdravé dobrovolníky

Ne

Popis

Inclusion Criteria:

  • Gestational diabetes mellitus in most recent pregnancy
  • Within 6-12 weeks postpartum
  • Understands oral and written Norwegian or English
  • Able to walk or run on a treadmill or ride a bike for at least 60 minutes
  • Living in the Trondheim area

Exclusion Criteria:

  • Pregnant or trying to become pregnant
  • Diagnosed with type 1 or type 2 diabetes
  • Diagnosed with cardiovascular disease
  • Have a history of eating disorders (anorexia, bulimia, or binge eating disorder)
  • Habitual eating window of less than 12 hours/day
  • Engaging in regular high-intensity endurance training (once per week or more)
  • Intention of starting an exercise programme and/or a dietary strategy within the study period
  • Shift work that includes night shifts
  • Bariatric surgery
  • Any other reason which, according to the researchers, makes the potential participant ineligible

Studijní plán

Tato část poskytuje podrobnosti o studijním plánu, včetně toho, jak je studie navržena a co studie měří.

Jak je studie koncipována?

Detaily designu

  • Primární účel: Prevence
  • Přidělení: Randomizované
  • Intervenční model: Paralelní přiřazení
  • Maskování: Žádné (otevřený štítek)

Zbraně a zásahy

Skupina účastníků / Arm
Intervence / Léčba
Experimentální: Intervention
Time-restricted eating and high-intensity interval training
The intervention is a combination of time-restricted eating and endurance exercise training. Time-restricted eating implies that the participants will be asked to limit their energy intake to a maximum 10-hour time window daily. The endurance exercise programme consists of 2-4 weekly supervised exercise sessions for 8 weeks. Thereafter, the participants will continue exercising unsupervised with weekly follow-up from researchers.
Ostatní jména:
  • Cvičení
  • Strava
Žádný zásah: Control
No intervention administered

Co je měření studie?

Primární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
Peak oxygen uptake
Časové okno: From baseline to after 8 weeks
Direct measurement of oxygen uptake during graded maximal exercise test to exhaustion
From baseline to after 8 weeks

Sekundární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
Peak oxygen uptake
Časové okno: From baseline to after 12 months
Direct measurement of oxygen uptake during graded maximal exercise test to exhaustion
From baseline to after 12 months
Body mass
Časové okno: From baseline to after 8 weeks
Estimated by bioimpedance scale
From baseline to after 8 weeks
Body mass
Časové okno: From baseline to after 12 months
Estimated by bioimpedance scale
From baseline to after 12 months
Fat mass
Časové okno: From baseline to after 8 weeks
Estimated by bioimpedance scale
From baseline to after 8 weeks
Fat mass
Časové okno: From baseline to after 12 months
Estimated by bioimpedance scale
From baseline to after 12 months
Muscle mass
Časové okno: From baseline to after 8 weeks
Estimated by bioimpedance scale
From baseline to after 8 weeks
Muscle mass
Časové okno: From baseline to after 12 months
Estimated by bioimpedance scale
From baseline to after 12 months
Visceral fat area
Časové okno: From baseline to after 8 weeks
Estimated by bioimpedance scale
From baseline to after 8 weeks
Visceral fat area
Časové okno: From baseline to after 12 months
Estimated by bioimpedance scale
From baseline to after 12 months
Bone mass
Časové okno: From baseline to after 8 weeks
Estimated by bioimpedance scale
From baseline to after 8 weeks
Bone mass
Časové okno: From baseline to after 12 months
Estimated by bioimpedance scale
From baseline to after 12 months
Waist circumference
Časové okno: From baseline to after 8 weeks
Measured by measuring tape at the level of the umbilicus
From baseline to after 8 weeks
Waist circumference
Časové okno: From baseline to after 12 months
Measured by measuring tape at the level of the umbilicus
From baseline to after 12 months
Systolic blood pressure
Časové okno: From baseline to after 8 weeks
Measured by automatic blood pressure cuff
From baseline to after 8 weeks
Systolic blood pressure
Časové okno: From baseline to after 12 months
Measured by automatic blood pressure cuff
From baseline to after 12 months
Diastolic blood pressure
Časové okno: From baseline to after 8 weeks
Measured by automatic blood pressure cuff
From baseline to after 8 weeks
Diastolic blood pressure
Časové okno: From baseline to after 12 months
Measured by automatic blood pressure cuff
From baseline to after 12 months
Resting heart rate
Časové okno: From baseline to after 8 weeks
Measured by automatic blood pressure cuff
From baseline to after 8 weeks
Resting heart rate
Časové okno: From baseline to after 12 months
Measured by automatic blood pressure cuff
From baseline to after 12 months
Blood cholesterol
Časové okno: From baseline to after 8 weeks
Venous blood sampling
From baseline to after 8 weeks
Blood cholesterol
Časové okno: From baseline to after 12 months
Venous blood sampling
From baseline to after 12 months
LDL cholesterol
Časové okno: From baseline to after 8 weeks
Venous blood sampling
From baseline to after 8 weeks
LDL cholesterol
Časové okno: From baseline to after 12 months
Venous blood sampling
From baseline to after 12 months
HDL cholesterol
Časové okno: From baseline to after 8 weeks
Venous blood sampling
From baseline to after 8 weeks
HDL cholesterol
Časové okno: From baseline to after 12 months
Venous blood sampling
From baseline to after 12 months
Triglycerides
Časové okno: From baseline to after 8 weeks
Venous blood sampling
From baseline to after 8 weeks
Triglycerides
Časové okno: From baseline to after 12 months
Venous blood sampling
From baseline to after 12 months
Fasting glucose
Časové okno: From baseline to after 8 weeks
Venous blood sampling
From baseline to after 8 weeks
Fasting glucose
Časové okno: From baseline to after 12 months
Venous blood sampling
From baseline to after 12 months
Insulin C-peptide
Časové okno: From baseline to after 8 weeks
Venous blood sampling
From baseline to after 8 weeks
Insulin C-peptide
Časové okno: From baseline to after 12 months
Venous blood sampling
From baseline to after 12 months
Plasma glucose after oral glucose tolerance test
Časové okno: From baseline to after 8 weeks
Venous blood sampling 120 minutes after ingesting 75 gram glucose
From baseline to after 8 weeks
Plasma glucose after oral glucose tolerance test
Časové okno: From baseline to after 12 months
Venous blood sampling 120 minutes after ingesting 75 gram glucose
From baseline to after 12 months
Dietary intake
Časové okno: From baseline to after 8 weeks
Self-reported dietary intake using electronic application
From baseline to after 8 weeks
Dietary intake
Časové okno: From baseline to after 12 months
Self-reported dietary intake using electronic application
From baseline to after 12 months
Mean Daily Minutes of Moderate-to-Vigorous Physical Activity Measured by ActiGraph Accelerometer
Časové okno: From baseline to after 8 weeks

Participants will wear an ActiGraph accelerometer for 7 consecutive days. Moderate-to-vigorous physical activity will be determined using prespecified accelerometer count thresholds. For each participant, the total number of minutes classified as moderate-to-vigorous physical activity will be calculated for each valid wear day and averaged across all valid wear days. The reported value will be mean minutes of moderate-to-vigorous physical activity per day.

A valid day will be defined as at least 10 hours of accelerometer wear, and participants must have at least 4 valid days to be included in the analysis.

From baseline to after 8 weeks
Mean Daily Minutes of Moderate-to-Vigorous Physical Activity Measured by ActiGraph Accelerometer
Časové okno: From baseline to after 12 months

Participants will wear an ActiGraph accelerometer for 7 consecutive days. Moderate-to-vigorous physical activity will be determined using prespecified accelerometer count thresholds. For each participant, the total number of minutes classified as moderate-to-vigorous physical activity will be calculated for each valid wear day and averaged across all valid wear days. The reported value will be mean minutes of moderate-to-vigorous physical activity per day.

A valid day will be defined as at least 10 hours of accelerometer wear, and participants must have at least 4 valid days to be included in the analysis.

From baseline to after 12 months
Self-reported physical activity
Časové okno: From baseline to after 8 weeks
International Physical Activity Questionnaire
From baseline to after 8 weeks
Self-reported physical activity
Časové okno: From baseline to after 12 months
International Physical Activity Questionnaire
From baseline to after 12 months
Psychological wellbeing
Časové okno: From baseline to after 8 weeks
World Health Organization Five Well-Being Index (WHO-5). The World Health Organization Five Well-Being Index (WHO-5) is a 5-item self-report questionnaire assessing subjective psychological well-being over the previous 2 weeks. Raw scores are transformed to a scale ranging from 0 to 100 by multiplying the total raw score by 4. Higher scores indicate better well-being.
From baseline to after 8 weeks
Psychological wellbeing
Časové okno: From baseline to after 12 months
World Health Organization Five Well-Being Index (WHO-5). The World Health Organization Five Well-Being Index (WHO-5) is a 5-item self-report questionnaire assessing subjective psychological well-being over the previous 2 weeks. Raw scores are transformed to a scale ranging from 0 to 100 by multiplying the total raw score by 4. Higher scores indicate better well-being.
From baseline to after 12 months
Sleep quality
Časové okno: From baseline to after 8 weeks
Pittsburgh Sleep Quality Index questionnaire global score. The Pittsburgh Sleep Quality Index (PSQI) is a 19-item self-report questionnaire that assesses sleep quality over the previous month. The global PSQI score ranges from 0 to 21, with higher scores indicating worse sleep quality.
From baseline to after 8 weeks
Sleep quality
Časové okno: From baseline to after 12 months
Pittsburgh Sleep Quality Index questionnaire global score. The Pittsburgh Sleep Quality Index (PSQI) is a 19-item self-report questionnaire that assesses sleep quality over the previous month. The global PSQI score ranges from 0 to 21, with higher scores indicating worse sleep quality.
From baseline to after 12 months
Depression
Časové okno: From baseline to 8 weeks
The Edinburgh Postnatal Depression Scale (EPDS) global score. The Edinburgh Postnatal Depression Scale is a 10-item self-report questionnaire that assesses symptoms of depression over the previous 7 days. The total score ranges from 0 to 30, with higher scores indicating more severe depressive symptoms.
From baseline to 8 weeks
Depression
Časové okno: From baseline to after 12 months
The Edinburgh Postnatal Depression Scale (EPDS) global score. The Edinburgh Postnatal Depression Scale is a 10-item self-report questionnaire that assesses symptoms of depression over the previous 7 days. The total score ranges from 0 to 30, with higher scores indicating more severe depressive symptoms.
From baseline to after 12 months
Anxiety
Časové okno: From baseline to after 8 weeks
Generalised anxiety disorder questionnaire (GAD-7) total score. The Generalized Anxiety Disorder 7-Item (GAD-7) is a 7-item self-report questionnaire that assesses symptoms of generalized anxiety over the previous 2 weeks. The total score ranges from 0 to 21, with higher scores indicating more severe anxiety symptoms.
From baseline to after 8 weeks
Anxiety
Časové okno: From baseline to after 12 months
Generalised anxiety disorder questionnaire (GAD-7) total score. The Generalized Anxiety Disorder 7-Item (GAD-7) is a 7-item self-report questionnaire that assesses symptoms of generalized anxiety over the previous 2 weeks. The total score ranges from 0 to 21, with higher scores indicating more severe anxiety symptoms.
From baseline to after 12 months
Type 2 diabetes mellitus diagnosis
Časové okno: During the 12-month follow-up
Participant-reported or measurement of HbA1c of 48 mmol/mol or above
During the 12-month follow-up
Mean Daily Step Count Measured by ActiGraph Accelerometer
Časové okno: From baseline to after 8 weeks
Participants will wear an ActiGraph accelerometer for 7 consecutive days. The number of steps recorded on each valid wear day will be averaged across all valid wear days for each participant. A valid day will be defined as at least 10 hours of accelerometer wear, and at least 4 valid days will be required.
From baseline to after 8 weeks
Mean Daily Sedentary Time Measured by ActiGraph Accelerometer
Časové okno: At baseline and after 8 weeks
Participants will wear an ActiGraph accelerometer for 7 consecutive days. Sedentary time will be identified using a prespecified accelerometer count threshold. Minutes classified as sedentary will be calculated for each valid wear day and averaged across all valid wear days for each participant. A valid day will be defined as at least 10 hours of accelerometer wear, and at least 4 valid days will be required.
At baseline and after 8 weeks
Mean Daily Step Count Measured by ActiGraph Accelerometer
Časové okno: From baseline to after 12 months
Participants will wear an ActiGraph accelerometer for 7 consecutive days. The number of steps recorded on each valid wear day will be averaged across all valid wear days for each participant. A valid day will be defined as at least 10 hours of accelerometer wear, and at least 4 valid days will be required.
From baseline to after 12 months
Mean Daily Sedentary Time Measured by ActiGraph Accelerometer
Časové okno: From baseline to after 12 months
Participants will wear an ActiGraph accelerometer for 7 consecutive days. Sedentary time will be identified using a prespecified accelerometer count threshold. Minutes classified as sedentary will be calculated for each valid wear day and averaged across all valid wear days for each participant. A valid day will be defined as at least 10 hours of accelerometer wear, and at least 4 valid days will be required.
From baseline to after 12 months

Další výstupní opatření

Měření výsledku
Popis opatření
Časové okno
Infant feeding method
Časové okno: Baseline, 8 weeks, and after 12 months
Infant feeding practices will be assessed using a study questionnaire. Feeding method will be categorized as exclusive breastfeeding, partial breastfeeding, exclusive formula feeding, or complementary feeding, as appropriate for the infant's age. The number and proportion of infants in each feeding category will be reported at each assessment.
Baseline, 8 weeks, and after 12 months
Adherence to time-restricted eating
Časové okno: Baseline, after 8 weeks and after 12 months
Time-frame for daily energy intake, reported as average and percentage of participants who adhere to < 10 hours daily energy intake window
Baseline, after 8 weeks and after 12 months
Adherence to exercise training
Časové okno: During the 8-week intervention and during the 12-month follow-up
Number of completed sessions, recorded using an electronic application
During the 8-week intervention and during the 12-month follow-up
Perception of intervention and follow-up
Časové okno: After 12 months
Qualitative interviews with selected participants to explore barriers and motivators
After 12 months

Spolupracovníci a vyšetřovatelé

Zde najdete lidi a organizace zapojené do této studie.

Spolupracovníci

Vyšetřovatelé

  • Vrchní vyšetřovatel: Trine Moholdt, PhD, Norwegian University of Science and Technology

Termíny studijních záznamů

Tato data sledují průběh záznamů studie a předkládání souhrnných výsledků na ClinicalTrials.gov. Záznamy ze studií a hlášené výsledky jsou před zveřejněním na veřejné webové stránce přezkoumány Národní lékařskou knihovnou (NLM), aby se ujistily, že splňují specifické standardy kontroly kvality.

Hlavní termíny studia

Začátek studia (Odhadovaný)

15. srpna 2026

Primární dokončení (Odhadovaný)

1. prosince 2028

Dokončení studie (Odhadovaný)

1. ledna 2029

Termíny zápisu do studia

První předloženo

3. července 2026

První předloženo, které splnilo kritéria kontroly kvality

17. srpna 2026

První zveřejněno (Aktuální)

20. srpna 2026

Aktualizace studijních záznamů

Poslední zveřejněná aktualizace (Aktuální)

20. srpna 2026

Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality

17. srpna 2026

Naposledy ověřeno

1. srpna 2026

Více informací

Termíny související s touto studií

Plán pro data jednotlivých účastníků (IPD)

Plánujete sdílet data jednotlivých účastníků (IPD)?

ANO

Popis plánu IPD

We will make de-identified individual participant data (IPD) collected in the study available to other researchers. We will upload a data set in an open access repository.

We will only share IPD that cannot be used to identify individuals.

Časový rámec sdílení IPD

Data will become available at the time of publication of the results from the study

Kritéria přístupu pro sdílení IPD

De-identified individual participant data underlying published results will be available upon reasonable request following publication of the primary study results.

Requests must be accompanied by a research proposal and statistical analysis plan. Requests will be reviewed by the Principal Investigator and study investigators for scientific merit, feasibility, consistency with participant consent, and compliance with applicable ethical and legal requirements. Approved researchers will be required to sign a data sharing agreement.

Only de-identified data will be shared. Data may be modified as necessary to minimize the risk of participant re-identification while preserving scientific utility.

Typ podpůrných informací pro sdílení IPD

  • PROTOKOL STUDY
  • MÍZA
  • ANALYTIC_CODE
  • CSR

Informace o lécích a zařízeních, studijní dokumenty

Studuje lékový produkt regulovaný americkým FDA

Ne

Studuje produkt zařízení regulovaný americkým úřadem FDA

Ne

Tyto informace byly beze změn načteny přímo z webu clinicaltrials.gov. Máte-li jakékoli požadavky na změnu, odstranění nebo aktualizaci podrobností studie, kontaktujte prosím register@clinicaltrials.gov. Jakmile bude změna implementována na clinicaltrials.gov, bude automaticky aktualizována i na našem webu .

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