Could a 7-Week lifestyle combo reshape blood sugar control?
NCT ID NCT04019860
First seen Aug 26, 2026 · Last updated Aug 27, 2026 · Updated 1 time
Summary
This trial tests whether high-intensity interval training (HIIT) and time-restricted eating—eating only within a 10-hour daily window—can improve blood sugar regulation in reproductive-aged women with overweight or obesity. Over seven weeks, participants will be assigned to one of four groups: HIIT alone, time-restricted eating alone, both combined, or a control group. Researchers will measure blood sugar responses, body composition, and fitness before and after the intervention to see if these lifestyle changes offer a benefit.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- High-intensity interval training and time-restricted eating
- What this could lead to
- If effective, this could point toward a practical, drug-free lifestyle strategy for improving blood sugar control in women with overweight or obesity.
- What could go wrong
- This is a short, 7-week trial, so any benefits may be modest or not last. Adherence to the exercise and eating schedules can be challenging, and results may not apply to all women.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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131 people
The number who actually took part.
- Started
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Aug 2019
- Finished
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Mar 2021
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 45 years
- Sex
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Female participants only
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * body mass index ≥ 27 kg/cm2, * able to walk on a treadmill or ride a bike for at least 60 min. Exclusion Criteria: * Pregnancy, lactation within 24 weeks of study commencement * known cardiovascular disease * type 1 or 2 diabetes * currently taking hypertension or glucose- or lipid-lowering medication * habitual eating window \< 12 hours * performing high intensity training more than once a week * body mass variations \> 4 kg three months prior to study commencement * shift work that includes night shifts.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Department of circulation and medical imaging , NTNU
Trondheim, 7491, Norway
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