Infants in Conditions A and B received usual third‐hourly gravity bolus feeds via nasogastric tube, typically over 5–15 min. The feed‐rate intervention (Condition C) was defined by third‐hourly feed volume given over 45 min by pump, with usual supine/flat infant position. Pump feeds were administered via Vygon (Écouen, France) Nutrisafe‐2 pump and giving set.