Note 4 — Chapter II
Reading edition
One of the strongest arguments of the "breath-band" advocates is based on this action,—the resistance of the closed glottis to a powerful expiratory pressure. The theory of breath-control by "opposed muscular action" takes no cognizance of this operation. It will however be shown in Chapter II of Part II that the "breath-band" theorists are mistaken in asserting that the action of holding the breath is not performed by the glottis-closing muscles.