Jennifer Cunha, Juliana Martins, Rafaela Peseta, Pedro Rosário
A self-regulation intervention conducted by class teachers: impact on elementary students' basic psychological needs and classroom engagement
Frontiers in psychology
physical activity adolescence associated positive health outcomes yet 26 us middle high school students report daily physical activity moreover number high school students playing sport declining largest decline football one reason decline playing football may increased attention risk head injury public health decline alarming football offers physical activity opportunity millions young people every year response efforts made institute measures enhance safety football objective topical review review measures data supporting effectiveness conducted search scientific literature supplemented web search identify safety measures used indiana university library electronic database pubmed web browser searches specific search terms addition peerreviewed studies searched news stories reports sportrelated organizations summarized measures evaluations effectiveness categorized measures type game rules practice guidelines equipment innovations strategic initiatives target age group elementarymiddle school high school college professional found attempts made improve safety football levels however many measures lack scientific evidence support effectiveness therefore researchers need systematically evaluate safety measures implementing evidencebased interventions balance public health risk playing football versus public health risk continued declines participation