title: Hormones, offspring sex ratios, and weekly training distances of male runners: implications for overtraining.
authors.forename: W H
authors.initials: WH
authors.lastname: James
mesh_terms: D005260:Female; D012739:Gonadal Steroid Hormones / Q000097:blood*; D006801:Humans; D012420:Running / Q000502:physiology*; D012744:Sex Ratio
chemical_list: D012739:Gonadal Steroid Hormones