Korean 호흡근 Cited by user LR0725 on 06 Dec 2022 호흡근(呼吸筋, respiratory muscles, muscles of respiration)은 가슴안(흉강)의 확장과 수축을 도와 들숨과 날숨에 기여하는 근육들이다.
English Training masks Cited by user Olivia Sand (UU) on 26 Feb 2019 Training masks are facial masks worn to limit the intake of air during breathing. Their ostensible purpose is to strengthen the respiratory musculature by making it work…