recreation Humans 6 human 6 Article 4 Female 4 Male 4 controlled study 4 female 4 male 4 Child 3 Recreation 3 United States 3 child 3 physical activity 3 Adolescent 2 Audition 2 Culture 2 Exposure limits 2 Hearing Loss, Noise-Induced 2 Noise 2 Noise exposure 2 Noise induced hearing loss 2 Noise pollution 2 Occupational Exposure 2 Physical activity 2 Play and Playthings 2 adolescent 2 adult 2 adverse event 2 exercise 2