VA Salt Lake City Health Care System, UT.
University of Utah, Salt Lake City.
Am J Speech Lang Pathol. 2018 Mar 1;27(1S):306-322. doi: 10.1044/2017_AJSLP-16-0188.
This investigation was designed to examine the effects of treatment intensity (i.e., dose frequency) on the outcomes of Sound Production Treatment (SPT) for acquired apraxia of speech.
Five men with chronic apraxia of speech and aphasia received both intense SPT (3 hr per day/3 days per week) and nonintense/traditional SPT (SPT-T; 1 hr per day/3 days per week) in the context of single-case experimental designs. Each treatment was applied separately to a designated set of experimental words with 1 treatment applied at a time. Twenty-seven treatment sessions were conducted with each phase of treatment. Accuracy of articulation of target sounds within treated and untreated experimental words was measured during the course of the investigation.
All participants demonstrated improved articulation with both treatment intensities. Better maintenance of gains for treated items was found with SPT-T for 2 participants as measured at an 8-week posttreatment retention probe. Superior maintenance of increased accuracy of production of untreated items was also observed with SPT-T for all participants.
A less intense (distributed) application of SPT facilitated better maintenance of improved articulatory accuracy for untreated items, and in some cases treated items, than intense SPT.
本研究旨在探讨治疗强度（即剂量频率）对获得性言语失用症的语音产生治疗（SPT）结果的影响。
5 名患有慢性言语失用症和失语症的男性在单病例实验设计的背景下，分别接受了高强度 SPT（每天 3 小时/每周 3 天）和非高强度/传统 SPT（SPT-T；每天 1 小时/每周 3 天）。每种治疗方法分别应用于一组指定的实验单词，每次只应用一种治疗方法。每个阶段的治疗共进行了 27 次治疗。在研究过程中，测量了目标音在治疗和未治疗实验单词中的发音准确性。
所有参与者在两种治疗强度下的发音都有所改善。对于 2 名参与者，在 8 周的治疗后保留探针中发现，SPT-T 对治疗项目的保持效果更好。对于所有参与者，SPT-T 也观察到了对未治疗项目的生产准确性的提高的更好保持。
与高强度 SPT 相比，SPT 的应用强度较低（分布更广泛）更有利于未治疗项目的准确性提高的保持，在某些情况下，也有利于治疗项目的保持。
