Effects of Hyperventilation and Tetany on the Speech Fluency of Stutterers and Nonstutterers

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Abstract
Twenty stutterers and 20 non-stutterers read a 150-word passage 3 times and were hyperventilated between the 2d and 3d readings until signs of tetany appeared. There were no differences between groups in alveolar air carbon dioxide tension, and no significant changes in speech fluency of stutterers as a result of hyperventilation and tetany. There was, however, a slight decrease in speech fluency of non-stutterers following induction of tetany through hyperventilation. These findings imply that the problem called stuttering can be differentiated from the problem of speech non-fluency, as such.

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