Longitudinal Change in Physical Activity in Children 6 to 36 Months of Age.

Objective: To describe the developmental pattern for physical activity (PA) in children 6-36 months of age and to identify factors that are longitudinally associated with PA as children transition from infancy to preschool age.

Study Design: The study employed a prospective longitudinal design with baseline data collected when children were approximately 6 months of age. Mothers and infants (n = 124) were recruited through community and educational settings in South Carolina.

The Association Between Meeting Physical Activity Guidelines and Mental Health Among High-School Students in the United States During the COVID-19 Pandemic.

Purpose: Physical activity (PA) is associated with mental health outcomes in high-school students, yet many students do not meet the recommended PA levels. Furthermore, both PA levels and mental health were severely impacted by the COVID-19 pandemic. The aim of this study was to assess whether the number of PA recommendations students met during the COVID-19 pandemic was associated with their self-reported mental health (including their experiences with stress, anxiety, and depression) during the COVID-19 pandemic.

Clustering Patterns of 24-Hour Physical Activity in Children 6-36 Months Old.

Purpose: To determine 24-hour physical activity (PA) clusters in children 6-36 months of age, factors associated with the clusters, and their agreement across time.

Method: A longitudinal study followed 150 infants from South Carolina up to 36 months of age. Measures included 24-hour PA and demographic data.