An interventional study of Moderate intensity exercise and High intensity exercise in Breast Milk Collection and Overweight and Obesity, sponsored by Norwegian University of Science and Technology. Completed at 1 site in Norway. Open to female participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-09-26.
Sponsored by Norwegian University of Science and Technology · Not applicable, Interventional, and Basic science
The investigators will determine the acute effect of exercise on breastmilk composition. Participants will come in to the lab on three different days, out of which they will exercise on two of these days and rest in the lab on the third day. The conditions will be randomly allocated to each participant. Breastmilk samples will be obtained in the morning of each test day, as well as immediately after, one hour after and four hours after the exercise/rest condition. Dietary intake will be standardized on the test days.
88 studies on the registry are indexed under Breast Milk Expression; 20 are open to participants now.
This study's enrollment of 32 is below the median of 60 across 49 interventional studies indexed under Breast Milk Expression.
Browse Breast Milk Expression studies →Norwegian University of Science and Technology is the lead sponsor of 495 studies on the registry; 48 are open to participants now.
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Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Resting in seated position
Moderate intensity endurance exercise, treadmill walking/running at 70% of heart rate maximum for 40 minutes
Behavioral: Moderate intensity exercise
High intensity interval training: treadmill walking/running. 10 minutes warm-up at 70% of heart rate maximum, followed by four 4-minutes bouts at 90-95% of heart rate maximum, separated by 3-minutes active recovery (at 70% of heart rate maximum)
Behavioral: High intensity exercise
Treadmill walking/running with moderate intensity
Treadmill walking/running with high intensity
Breastmilk metabolite composition
Global metabolomics profiling using MS/MS technology
Time frame: Change from before exercise to after exercise (+0 hour, +1 hour, and +4 hours)
Complex lipids composition
Global metabolomics profiling using MS/MS technology
Time frame: Change from before exercise to after exercise (+0 hour, +1 hour, and +4 hours)
Adiponectin
Concentration
Time frame: Change from before exercise to after exercise (+0 hour, +1 hour, and +4 hours)
Leptin
Concentration
Time frame: Change from before exercise to after exercise (+0 hour, +1 hour, and +4 hours)
Insulin Growth Factor-1
Concentration
Time frame: Change from before exercise to after exercise (+0 hour, +1 hour, and +4 hours)
Insulin
Concentration
Time frame: Change from before exercise to after exercise (+0 hour, +1 hour, and +4 hours)
Ghrelin
Concentration
Time frame: Change from before exercise to after exercise (+0 hour, +1 hour, and +4 hours)
Cytokine profiling (Multiplex 27)
Concentration
Time frame: Change from before exercise to after exercise (+0 hour, +1 hour, and +4 hours)
Cardiorespiratory fitness
Peak oxygen uptake
Time frame: At baseline
Body mass in kg
Impedance scale
Time frame: At baseline
Fat mass in kg
Impedance scale
Time frame: At baseline
Muscle mass in kg
Impedance scale
Time frame: At baseline
Height in metres
Stadiometer
Time frame: At baseline
PDFs hosted by the registry, ClinicalTrials.gov.
Ran from Mar 2023 to primary completion in May 2025, 26 months.
Of 32 non-industry interventional studies with no phase under Breast Milk Expression, half reached primary completion within 17 months of starting (the median), counting those still running; a quarter within 6 and three quarters within 28. This study's 26 months is above that.
Counting every sponsor, half of 39 studies reached it within 13 months; a quarter within 5 and three quarters within 28.
How these figures are worked out, and which studies are left out of them.
This study is completed, as verified in Sep 2025. You cannot join it, but the record below documents what was studied.
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Norwegian University of Science and Technology →