Kelchner, Lisa N Effects of prolonged loud reading on normal adolescent male voices. [electronic resource] - Language, speech, and hearing services in schools Apr 2006 - 96-103 p. digital Publication Type: Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't ISSN: 0161-1461 Standard No.: 10.1044/0161-1461(2006/012) doi Subjects--Topical Terms: AcousticsAdolescentHumansLaryngoscopy--methodsMaleMuscle FatiguePhonation--physiologyReadingSurveys and QuestionnairesVideo RecordingVocal Cords--physiopathologyVoice--physiologyVoice Quality