article human 148 controlled study 116 male 109 female 88 Humans 85 human experiment 78 nonhuman 72 adult 65 unclassified drug 42 Male 41 physical activity 37 animal experiment 36 Female 35 major clinical study 35 Animals 32 structure activity relation 29 animal model 26 plant extract 26 rat 26 learning 23 physiology 23 aged 22 antioxidant activity 22 clinical article 21 priority journal 21 Rats 20 exercise 20 mouse 20 animal tissue 19