Abstract

iadochokinesia is the ability to perform repeated and alternating movements quickly. In speech evaluation, the iadochokinetic (DDK) rate is used to assess the dexterity and integrity of motor control. Although studies on DDK rate exist or Chilean Spanish speakers, data on young adults remain limited. This study aimed to describe and establish preliminary ormative data for DDK rate among Chilean Spanish-speaking young adults, with a sample of 250 typically developing ndividuals aged 18 to 25 years. Participants were instructed to repeat the syllable [pa] into a microphone as quickly as possible or 8 seconds. Speech was recorded using Motor Speech Profile software, and five parameters were analyzed: DDKavp, DKavr, DDKcvp, DDKjit, and DDKcvi. The distribution of scores for these parameters in the sample did not fit a normal istribution; therefore, norms were established based on quartiles. Additionally, Spearman correlation analysis indicated that he parameters DDKcvp and DDKjit tended to decrease with age within the 18-25 years range. These findings hold potential or research and clinical applications, as they enable comparisons with populations of different ages and with clinical groups.