Feasibility of inspiratory muscle training for patients with persistent dyspnea after COVID-19 infection: a pilot study

Romain Collet, Maarten van Egmond, Marike van der Schaaf, Mel Major-Helsloot, Mel Major

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Objective
This study investigates the feasibility of delivering inspiratory muscle training as part of the physical therapy treatment for patients with post-COVID dyspnoea.

Design
Mixed-methods pilot study.

Subjects/patients
Patients with complaints of dyspnoea after COVID-19 infection and their physical therapists.

Methods
The Amsterdam University of Applied Sciences and the Amsterdam University Medical Centers conducted this study. Participants performed daily inspiratory muscle training at home for 6 weeks, consisting of 30 repetitions against a pre-set resistance. The primary outcome was feasibility assessed as acceptability, safety, adherence and patient- and professional experience obtained through diaries and semi-structured interviews. The secondary outcome was maximal inspiratory pressure.

Results
Sixteen patients participated. Nine patients and 2 physical therapists partook in semi-structured interviews. Two patients dropped out before initiating the training. Adherence was 73.7%, and no adverse events occurred. Protocol deviations occurred in 29.7% of the sessions. Maximal inspiratory pressure changed from 84.7% of predicted at baseline to 111.3% at follow-up. Qualitative analysis identified barriers to training: ‘Getting acquainted with the training material’ and ‘Finding the right schedule’. Facilitators were: ‘Support from physical therapists’ and ‘Experiencing improvements’.

Conclusion
Delivering inspiratory muscle training to patients with post-COVID dyspnoea seems feasible. Patients valued the simplicity of the intervention and reported perceived improvements. However, the intervention should be carefully supervised, and training parameters adjusted to individual needs and capacity.

Original languageEnglish
Article number6507
Pages (from-to)6507
Number of pages6
JournalJournal of Rehabilitation Medicine - Clinical Communications
Volume6
DOIs
Publication statusPublished - 5 Jun 2023

Keywords

  • COVID-19
  • dyspnoea
  • maximal inspiratory pressures
  • physical therapy modalities

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