Three-fourths of US preschool-age children are in child care; many are not achieving recommended levels of physical activity. Daily physical activity is essential for motor and socioemotional development and for the prevention of obesity. Little is known about physical-activity barriers in child care.

Injury and school-readiness concerns may inhibit children’s physical activity in child care. Fixed playground equipment that meets licensing codes is unchallenging and uninteresting to children. Centers may cut time and space for gross motor play to address concerns about school readiness. (Read the full article)

Most acute wheezing episodes in preschool children are associated with rhinovirus, which decreases extracellular adenosine triphosphate levels, leading to airway surface liquid dehydration and submucosal edema, which cause failure of mucus clearance. These children respond poorly to available treatments.

Hypertonic saline inhalation, a pro–airway surface liquid hydration therapy, significantly decreases both length of stay by 33% (1 day) and the absolute risk of hospitalization by 30% in preschool children presenting with acute wheezing episode to the emergency department. (Read the full article)

Although observational studies have consistently reported an association between media use and child sleep problems, it is unclear whether the relationship is causal or if an intervention targeting healthy media use can improve sleep in preschool-aged children.

This study demonstrates that a healthy media use intervention can improve child sleep outcomes and adds evidence that the relationship between media and sleep in preschool-aged children is indeed causal in nature. (Read the full article)

Loud snoring, which spikes at ~2 to 3 years of age, has been associated with behavior problems in school-aged children in cross-sectional studies, but no longitudinal studies have quantified predictors and the behavioral impact of persistent snoring in preschool-aged children.

Persistent loud snoring, which occurs in 9% of children 2 to 3 years of age, is linked with behavior problems. Higher socioeconomic status and a history of breastfeeding were associated with lower rates of transient and persistent snoring in young children. (Read the full article)

Overweight children are at risk for becoming obese adults, especially if they have an obese parent. Family-based behavioral interventions, largely implemented in specialized settings, have shown efficacy in weight control in youth aged ≥8 years.

This study demonstrates the efficacy of a family-based behavioral weight control program translated to be implemented in the primary care setting. The work underscores the importance of pediatricians intervening early and shifting their focus from the child to the family. (Read the full article)

Interventions to reduce screen time in preschool-aged children are promising.

A screen time intervention in 3-year-old children implemented in the primary care setting did not reduce screen time or BMI. (Read the full article)

Validated questionnaires can improve the identification of psychosocial problems among children. The Strengths and Difficulties Questionnaire (SDQ) 3-4 is a promising option. However, no studies are available that examine the psychometric properties of the SDQ parent form 3-4.

The results of this study show that the SDQ 3-4 is a valid tool for the identification of psychosocial problems in preschool-aged children. (Read the full article)

Children have been shown to imitate behaviors they see on screen.

Modifying what children watch can improve their observed behavior. (Read the full article)

Unintentional injuries lead to a significant number of children suffering from long-lasting posttraumatic stress symptoms. Therefore, early identification of individuals at risk is crucial to provide preventative interventions. However, currently, no early screener has been evaluated in preschool-aged children.

Good sensitivity (85%) and acceptable specificity (63%) were found for an early screening measure for preschool-aged children after accidental injury. Hence, the 21-item Pediatric Emotional Distress Scale–Early Screener, a reliable and valid early screening instrument, is suggested for use within a stepped-care model. (Read the full article)

Diarrhea still remains as a significant cause of morbidity and mortality. Intervention to reduce this risk are needed. Evidence on the effect of Lactobacillus reuteri DSM 17938 to prevent diarrhea in children is scarce.

In healthy children attending day care centers, daily administration of L reuteri DSM 17938 had a significant effect in reducing episodes and duration of diarrhea and respiratory tract infections, with consequent cost saving for the community. (Read the full article)

Physical activity is beneficial to health. Parents are crucial in shaping children’s behaviors, with active mothers appearing to have active children. Little is known about this association in preschool-aged children, or about factors influencing activity in mothers of young children.

Mother-child physical activity levels were positively associated and influenced by temporal and demographic factors. Maternal activity levels were low, and influences differ by activity intensity. Health promotion efforts to increase activity in mothers may also benefit their young children. (Read the full article)

The American Academy of Pediatrics recommends parent-child reading from infancy through at least kindergarten, the span of maximal brain growth. Home literacy environment, including reading behaviors and access to books, has been shown to promote oral language and print concepts.

Home reading environment is positively associated with activation of brain areas supporting narrative comprehension and mental imagery in preschool children. This offers novel insight into the neurobiological foundations of emergent literacy and potential effect of shared reading during early childhood. (Read the full article)