CI

At a glance

ClinicalIndex Comparison Record
N/ACompleted· 9 enrolled
Drug / intervention
Respiratory Muscle Trainingdevice
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT04224961
NCT04224961N/ACompleted

Moderate Intensity Respiratory Muscle Training (RMT) in ALS

Duke University·interventional·Posted Jan 13, 2020·Updated Jan 29, 2026

In Brief

A clinical study evaluating Respiratory Muscle Training for ALS. Completed, enrolled 9 participants across 1 site.

Detailed Summary

Twelve adults with ALS will participate in a study involving four 3-week cycles of progressive respiratory muscle training (RMT). The investigators will measure maximum inspiratory pressure (MIP) and maximum expiratory pressure (MEP) weekly. The investigators will obtain the majority of measurements of MIP and MEP during web-based telehealth visits. Participants will be stratified into 2 groups based on baseline inspiratory muscle strength as determined by maximum inspiratory pressure (MIP): six participants with minimal to no respiratory weakness (i.e., MIP ≥ 70% predicted) and six participants with mild to moderate inspiratory weakness (i.e., MIP 40-70% predicted).

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsALS
CountriesUnited States
Collaborators--

Timeline

N/ACompletedFinished
2020202120222023202420252026
First PostedJan 13, 2020
Enrollment StartJan 14, 2020
Primary CompletionNov 29, 2022
TodayJul 2, 2026
Enrollment to primary: 2.9 yearsPosted 6.5 years ago

Interventions

Respiratory Muscle Trainingdevice

Two commercially available pressure-threshold RMT devices that utilize a spring-loaded flange to provide resistance against inspiration and expiration independent of respiratory flow rate will be used to provide the necessary range of resistance. Each participant will use two RMT devices, one for IMT and one for EMT.