Adult Male adult human male 422 Humans 402 Female 386 female 370 article 340 controlled study 248 Middle Aged 230 priority journal 204 Adolescent 140 aged 130 Aged 124 major clinical study 118 middle aged 116 Young Adult 114 adolescent 112 clinical article 96 physiology 94 Argentina 82 Child 74 child 74 Article 68 human experiment 62 young adult 54 normal human 52 Animals 46 Child, Preschool 46