Should maximum performance tests of oral motor functions be used to assess dysarthric impairment?

What is it about?

Two studies were designed to compare maximum phonation tasks and maximum syllable repetition tasks with speech tasks for their between- and within-subject variability. The results challenge the assumption that maximum phonation time and maximum syllable repetition rate are valid measures of speech impairment.

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Why is it important?

Because maximum performace measures, such as maximum phonation time or maximum syllable repetition rate, are widely used in clinical assessments of neurogenic speech impairment, although the motor requirements of such tasks differ substantially from those of spoken language production.

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