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| Name | Class |
|---|---|
| St. Olavs Hospital | OTHER |
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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. At the time of study commencement, the trial (including planned analyses) is not fully funded. Additional milk will be stored for future analyses (not yet specified) when funding is secured.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Breastmilk | Experimental | Randomized intervention order. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| High intensity interval training | Behavioral | Four times four minutes treadmill interval training |
|
| Measure | Description | Time Frame |
|---|---|---|
| Breastmilk metabolite composition | Metabolomics profiling | Change from before exercise to after exercise (+0 hour, +1 hour, and + 4 hours) |
| Measure | Description | Time Frame |
|---|---|---|
| Adiponectin | Concentration in breastmilk | Change from before exercise to after exercise (+0 hour, +1 hour, and + 4 hours) |
| Leptin | Concentration in breastmilk |
| Measure | Description | Time Frame |
|---|---|---|
| Cardiorespiratory fitness | Peak oxygen uptake | At baseline |
| Body mass in kg | Impedance scale | At baseline |
Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Øystein Risa, Phd | Norwegian University of Science and Technology | Study Director |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Department of Circulation and Medical Imaging, NTNU | Trondheim | Norway |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 41220705 | Derived | Lemoine MCC, Klau LJ, Holmen M, Ashby ER, Aachmann FL, Andreassen T, Giskeodegard GF, Moholdt T. Unaltered 3'-sialyllactose and 6'-sialyllactose concentrations in human milk acutely after endurance exercise: a randomized crossover trial. Front Nutr. 2025 Oct 27;12:1638430. doi: 10.3389/fnut.2025.1638430. eCollection 2025. | |
| 39981021 |
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| ID | Term |
|---|---|
| D009043 | Motor Activity |
| ID | Term |
|---|---|
| D001519 | Behavior |
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| ID | Term |
|---|---|
| D000072696 | High-Intensity Interval Training |
| ID | Term |
|---|---|
| D064797 | Physical Conditioning, Human |
| D015444 | Exercise |
| D009043 | Motor Activity |
| D009068 | Movement |
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| Moderate intensity training | Behavioral | Moderate intensity treadmill training |
|
| Resting | Behavioral | No training |
|
| Change from before exercise to after exercise (+0 hour, +1 hour, and + 4 hours) |
| Insulin | Concentration in breastmilk | Change from before exercise to after exercise (+0 hour, +1 hour, and + 4 hours) |
| Insulin Growth Factor-1 | Concentration in breastmilk | Change from before exercise to after exercise (+0 hour, +1 hour, and + 4 hours) |
| Cytokine profiling (Multiplex 27) | Concentration in breastmilk | Change from before exercise to after exercise (+0 hour, +1 hour, and + 4 hours) |
| Height in metres | stadiometer | At baseline |
| Fat mass in kg | Impedance scale | At baseline |
| Muscle mass in kg | Impedance scale | At baseline |
| Holm RL, Holmen M, Sujan MAJ, Giskeodegard GF, Moholdt T. Acute effect of endurance exercise on human milk insulin concentrations: a randomised cross-over study. Front Nutr. 2025 Jan 27;11:1507156. doi: 10.3389/fnut.2024.1507156. eCollection 2024. |
| D009142 |
| Musculoskeletal Physiological Phenomena |
| D055687 | Musculoskeletal and Neural Physiological Phenomena |