Children and adolescents globally experienced substantial reductions in physical activity during the COVID-19 pandemic, according to a review published online July 11 in JAMA Pediatrics.

Ross D. Neville, Ph.D., from University College Dublin, and colleagues conducted a systematic literature review to identify studies that used validated measures to document changes in child and adolescent during the COVID-19 pandemic. The data were analyzed via a random-effects meta-analysis in January 2022.

Based on 22 studies (14,216 participants), the researchers found that the percentage change in the duration of engagement in total daily physical activity from before to during COVID-19 was −20 percent. Changes were larger for higher-intensity activities (−32 percent), which translates to a 17-minute reduction in 's daily moderate-to-vigorous physical activity levels. Samples located at (37 percent) and studies with a longer duration between physical activity assessments (25 percent) showed larger reductions in physical activity.

"Children and adolescents have experienced measurable reductions in physical activity during the COVID-19 pandemic," the authors write. "Findings underscore the need to provide bolstered access to support and resources related to physical activity to ensure and social functioning among children and adolescents during pandemic recovery efforts."

More information: Ross D. Neville et al, Global Changes in Child and Adolescent Physical Activity During the COVID-19 Pandemic, JAMA Pediatrics (2022). DOI: 10.1001/jamapediatrics.2022.2313

Journal information: JAMA Pediatrics