Adult Male adult human 428 male 409 Humans 389 Female 375 female 361 article 326 controlled study 239 Middle Aged 222 priority journal 200 Adolescent 135 aged 125 Aged 119 major clinical study 116 middle aged 112 Young Adult 111 adolescent 108 clinical article 95 physiology 93 Argentina 79 Child 72 child 71 Article 67 human experiment 59 young adult 54 normal human 49 Child, Preschool 44 Animals 43