Male adult male 633 human 562 Female 537 female 529 Humans 507 Adult 428 article 424 controlled study 403 priority journal 335 Middle Aged 282 Article 181 Animals 174 aged 171 physiology 167 Aged 163 nonhuman 161 major clinical study 154 Adolescent 143 animal 143 middle aged 138 clinical article 125 Young Adult 121 adolescent 118 Argentina 117 metabolism 88 animal experiment 87 genetics 81 child 79