PMC:7796176 / 756-963 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T8","span":{"begin":1,"end":163},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":" During early stages of the pandemic, time spent in physical activity decreased, recreational screen time and sleep duration increased, and sleep quality declined. Toddlers and preschoolers with space to pla"}