The effects of COVID-19 on respiratory muscle performance: making the case for respiratory muscle testing and training
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The effects of COVID-19 on respiratory muscle performance: making the case for respiratory muscle testing and training

Screening for Respiratory Muscle (RM) weakness and providing interventions to improve RM performance are essential for patients with COVID-19. This article will review the impact of SARS-CoV-2 infection on RM performance and provide clinical recommendations for screening RM performance and treatment interventions.

The available evidence suggests that SARS-CoV2 infection may result in specific damage to the RM and other organ systems. This acute pathology to the RM in patients with COVID-19 is likely further compounded by underlying health conditions, effects of MV, and other COVID-19 pathology that impairs RM performance and increases breathing work. These factors combined may explain the acute and persistent dyspnoea and other functional limitations demonstrated in patients with COVID-19.

The role and efficacy of RMT in improving dyspnoea and other key functional outcomes are well-established for patients across multiple health conditions. Due to the direct impact of SARS-CoV2 infection on RM performance, it is becoming apparent that RM testing and RMT will play a key role in the rehabilitation of patients with COVID-19. However, evidence for the role of RM testing and RMT in the rehabilitation of patients with COVID-19 is still emerging.

Further research is needed to determine the most appropriate RM testing and RMT protocols for patients with COVID-19 and the effect of RMT on key functional outcomes.

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