Expiratory Muscle Strength Training Improves Swallowing and Respiratory Outcomes in People With Dysphagia: A Systematic Review
International Journal of Speech-Language Pathology
Brooks, M., McLaughlin, E., et al. (2019).
International Journal of Speech-Language Pathology, 21(1), 89-100.
This systematic review investigates the effects of expiratory muscle strength training on communication and swallowing outcomes in adults with acquired communication and/or swallowing impairments.
Not stated
Up to May/June 2016 (discrepancy in text)
Randomized controlled trials; non-randomized controlled trials; pre-test/post-test designs; cohort studies
7
Although two of the included studies investigated the effects of expiratory muscle strength training on voice-related quality outcome measures, the effect "on voice function remains unclear and there is no conclusive evidence supporting this intervention in isolation for voice therapy" (p. 97).
Four of the five studies included were randomized controlled trials (RCTs). Although further evidence is needed, "there is preliminary evidence that expiratory muscle strength training may improve respiratory and swallowing outcomes in individuals with dysphagia due to Parkinson's disease or stroke" (p. 99). Results suggest the intervention may also be applicable for other "individuals presenting with motor based communication impairments" (p. 99).
