Exercise circuit shows promise for insulin resistance
NCT ID NCT04528693
First seen Jun 25, 2026 · Last updated Jun 26, 2026 · Updated 1 time
Summary
This study tested whether 12 weeks of circuit training (combining strength and endurance exercises) could improve insulin sensitivity and blood vessel function in women with insulin resistance. Forty-nine women aged 25-45 participated, with some doing the circuit training three times a week and others serving as a control group. Researchers measured changes in insulin resistance, blood sugar, cholesterol, and other health markers.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- circuit training (strength and endurance exercises)
- What this could lead to
- If it works, this could point toward a non-drug way to help manage insulin resistance and improve heart health.
- What could go wrong
- This is a small, completed study with only 49 women, so results may not apply to everyone. Exercise programs also require long-term commitment to maintain benefits.
This is an AI summary of the original study and may miss details. Read our disclaimer.
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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49 people
The number who actually took part.
- Started
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Aug 2020
- Finished
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Jun 2025
- 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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25 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.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * women, * age: 25-45years, * menstruating, * BMI 18,5-29,9 kg/m2, * insulin resistance based on HOMA -IR (cut-off point 2.5), * not contraindicated to physical activity. Exclusion Criteria: * type 1 and 2 diabetes, * poorly controlled hypertension (mean SBP \>140mmHg and/or mean DBP \>90mmHg) over the last month and/or need to modify the pharmacological treatment, * obesity: BMI \> 30 kg/m2, * lipid disorders requiring implementation of pharmacological treatment in the last 3 months before or during observation, * a positive history of ischemic heart disease, carotid atherosclerosis and / or lower limb atherosclerosis, * clinically significant arrhythmias or conduction disorders, * chronickidney disease, * clinically significant liver dysfunction, * acute or chronic, clinically manifest inflammatory process, * an acute infection in the last month, * cancer, * taking dietary supplements within a month before inclusion and during observation, * taking medication that could interfere with the results of the tests, * other conditions that may pose any risk to the patient during the observation.
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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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Poznan University of Physical Education
Poznan, 61-871, Poland
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