Adult 3 Article Female Humans 3 Male 3 adult 3 female 3 human 3 male 3 Adolescent 2 Middle Aged 2 adolescent 2 aged 2 athletics 2 major clinical study 2 middle aged 2 physical activity 2 Aged 1 Athletic Injuries 1 COVID-19 1 Centers for Disease Control and Prevention (U.S.) 1 Child 1 Chronic Traumatic Encephalopathy 1 Exercise 1 Health Knowledge, Attitudes, Practice 1 Health Surveys 1 Irish (citizen) 1 Pandemics 1 Parents 1 Physical activity 1