Association between maternal physical activity and casein content in breast milk from the YI cohort: A preterm and term infant comparison

Key Points

• Higher maternal physical activity correlates with increased casein content in breast milk, impacting infant nutrition.
• Notably, the difference in casein levels was observed between preterm and term infants, with specific measurements recorded.
• Observational analysis linking maternal physical activity and breast milk composition captures data across the YI cohort.
• Findings may guide recommendations on maternal fitness during and after pregnancy, particularly for infant nutrition.