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JOURNAL ARTICLE
RANDOMIZED CONTROLLED TRIAL
RESEARCH SUPPORT, N.I.H., EXTRAMURAL
Impact of expiratory strength training in amyotrophic lateral sclerosis: Results of a randomized, sham-controlled trial.
Muscle & Nerve 2019 January
INTRODUCTION: The purpose of this study was to determine the impact of an in-home expiratory muscle strength training (EMST) program on pulmonary, swallow, and cough function in individuals with amyotrophic lateral sclerosis (ALS).
METHODS: EMST was tested in a prospective, single-center, double-blind, randomized, controlled trial of 48 ALS individuals who completed 8 weeks of either active EMST (n = 24) or sham EMST (n = 24). The primary outcome to assess treatment efficacy was change in maximum expiratory pressure (MEP). Secondary outcomes included: cough spirometry; swallowing; forced vital capacity; and scoring on the ALS Functional Rating Scale-Revised.
RESULTS: Treatment was well tolerated with 96% of patients completing the protocol. Significant differences in group change scores were noted for MEP and Dynamic Imaging Grade of Swallowing Toxicity scores (P < 0.02). No differences were noted for other secondary measures.
DISCUSSION: This respiratory training program was well-tolerated and led to improvements in respiratory and bulbar function in ALS. Muscle Nerve 59:40-46, 2019.
METHODS: EMST was tested in a prospective, single-center, double-blind, randomized, controlled trial of 48 ALS individuals who completed 8 weeks of either active EMST (n = 24) or sham EMST (n = 24). The primary outcome to assess treatment efficacy was change in maximum expiratory pressure (MEP). Secondary outcomes included: cough spirometry; swallowing; forced vital capacity; and scoring on the ALS Functional Rating Scale-Revised.
RESULTS: Treatment was well tolerated with 96% of patients completing the protocol. Significant differences in group change scores were noted for MEP and Dynamic Imaging Grade of Swallowing Toxicity scores (P < 0.02). No differences were noted for other secondary measures.
DISCUSSION: This respiratory training program was well-tolerated and led to improvements in respiratory and bulbar function in ALS. Muscle Nerve 59:40-46, 2019.
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