title: Response.
authors.affiliation: Department of Sports Science, Japan Institute of Sports Sciences, Tokyo, JAPAN Faculty of Sport Sciences, Waseda University, Saitama, JAPAN.
authors.forename: Masako
authors.initials: M
authors.lastname: Hoshikawa
authors.forename: Sunao
authors.initials: S
authors.lastname: Uchida
mesh_terms: D006801:Humans; D000860:Hypoxia / Q000503:physiopathology*; D008297:Male; D012890:Sleep / Q000502:physiology*