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Functional outcomes associated with expiratory muscle strength training: Narrative review

Functional outcomes associated with expiratory muscle strength training: Narrative review. Helena Laciuga, MA; John C. Rosenbek, PhD; Paul W. Davenport, PhD; Christine M. Sapienza, PhD. Aim

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Functional outcomes associated with expiratory muscle strength training: Narrative review

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  1. Functional outcomes associated with expiratory muscle strengthtraining: Narrative review Helena Laciuga, MA; John C. Rosenbek, PhD; Paul W. Davenport, PhD; Christine M. Sapienza, PhD

  2. Aim • Review available evidence for effects of expiratory muscle strength training (EMST) with use of pressure threshold device. • Relevance • Reduced expiratory muscle strength may decrease ability to generate adequate expiratory pressure for voice production or airway clearance during cough.

  3. Method • Searched for articles published after 1994 in PubMed, Cochrane, and Google Scholar databases. • Used phrases “expiratory muscle training” and “expiratory muscle strength training.” • Further reviewed articles uncovered after initial search to determine use of expiratory pressure threshold device. • Selected 24 articles based on predetermined criteria.

  4. Results • EMST has been successfully applied to increase maximum expiratory pressure, with potential to improve some aspects of speech, swallow, respiration, and physical performance requiring adequate expiratory pressure. • EMST could be future therapeutic approach to voice impairments or dysphagia.

  5. Conclusion • Further research should assess supportive function for EMST in combination with task-specific exercise programs targeting voice loudness, cough effectiveness, and swallow safety.

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