human 131 Humans 94 female 86 male 86 adult 74 Article 61 controlled study 57 Female 45 Male 41 Physical activity 38 article 37 physical activity 37 major clinical study 32 Adult 30 Exercise 29 exercise 26 Child 25 child 24 aged 23 human experiment 23 middle aged 23 randomized controlled trial 22 clinical article 20 physiology 20 psychology 20 follow up 18 Middle Aged 17 young adult 17 adolescent 16 procedures 16