Identifying Which is the Best Way to Soothe a Crying Infant

The best strategy to calm down infants crying excessively is by holding and walking with them for five minutes, this is according to an evidence-based soothing strategy published in the journal Current Biology. Many parents suffer from their babies’ night-time crying. That’s such a big issue, especially for inexperienced parents, that can lead to parental stress and even to infant maltreatment in a small number of cases.

To find a solution to this problem, researchers have been studying the transport response, an innate reaction seen in many altricial mammals. In which young ones are immature and unable to care for themselves such as mice, dogs, monkeys, and humans.

They observed that when these animals pick up their infants and start walking, the bodies of their young tend to become docile and their heart rates slow.

Researchers wanted to compare the effects of the transport response, the relaxed reaction while being carried, with other conditions such as motionless maternal holding or rocking and also examine if the effects persist with longer carrying in human infants.

They compared 21 infants’ responses while under four conditions: being held by their walking mothers, held by their sitting mothers, lying in a still crib, or lying in a rocking cot.

They found that when the mother walked while carrying the baby, the crying infants calmed down and their heart rates slowed within 30 seconds. A similar calming effect occurred when the infants were placed in a rocking cot, but not when the mother held the baby while sitting or placed the baby in a still crib (1^✔ ✔Trusted Source
A method to soothe and promote sleep in crying infants utilizing the transport response

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Soothing a Crying Baby with the Scientific Method

This suggests that holding a baby alone might be insufficient in soothing crying infants, contradicting the traditional assumption that maternal holding reduces infant distress. At the same time, the movement has calming effects, likely activating a baby’s transport response (2^✔ ✔Trusted Source
Infant Calming Responses during Maternal Carrying in Humans and Mice

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The effect was more evident when the holding and walking motions continued for five minutes. All crying babies in the study stopped crying, and nearly half of them fell asleep.

But when the mothers tried to put their sleepy babies to bed, more than one-third of the participants became alert again within 20 seconds. However, if the infants were asleep for a longer period before being laid down, they were less likely to awaken during the process, the team found.

This experiment did not support these general assumptions. While the experiment involved only mothers, researchers expect the effects are likely to be similar in any caregiver.

Based on their findings, they proposed a method for soothing and promoting sleep in crying infants. They recommend that parents hold crying infants and walk with them for five minutes, followed by sitting and holding infants for another five to eight minutes before putting them to bed.

The protocol, unlike other popular sleep training approaches such as letting infants cry until they fall asleep themselves, aims to provide an immediate solution for infant crying. Whether it can improve infant sleep in the long term requires further research.

Many people intuitively parent and listen to other people’s advice on parenting without testing the methods with rigorous science. But we need science to understand a baby’s behaviors because they’re much more complex and diverse than we thought.

References:

1. A method to soothe and promote sleep in crying infants utilizing the transport response - (https://www.cell.com/current-biology/fulltext/S0960-9822(22)01363-X?_returnURL=https)
2. Infant Calming Responses during Maternal Carrying in Humans and Mice - (https://www.sciencedirect.com/science/article/pii/S0960982213003436)

Source-Medindia