Does exercise boost beneficial hormone transfer in lactating women?
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A study published in the journal Frontiers in Nutrition and conducted at The Norwegian University of Science and Technology explored whether exercising increased the production of adiponectin concentrations in breast milk.
Breast milk contains adiponectin, a hormone impacting glucose and fat metabolism. It can influence infant metabolism by crossing the intestinal barrier. Adiponectin is primarily secreted by white adipose tissue. Its low levels are linked to insulin resistance and type 2 diabetes. Maternal lifestyle, including smoking, BMI, gestational diabetes, and diet, has been shown to affect the composition of breast milk. Aerobic exercise, either as moderate-intensity continuous training (MICT) or high-intensity interval training (HIIT), may increase circulating levels of adiponectin.
The study involved exclusively breastfeeding participants with 6–12 week-old term infants undergoing three laboratory conditions:
Moderate-intensity continuous training (MICT)
High-intensity interval training (HIIT)
and No activity (REST)
Breast milk samples were collected before, immediately after, 1 hour after, and 4 hours after each condition, and adiponectin concentrations were measured. Researchers then compared adiponectin concentration changes post-MICT and HIIT.
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