Twelve weeks of respiratory muscle training enhance respiratory function in CrossFit® athletes returning to exercise post-SARS-CoV-2 infection: single-blind randomized clinical trial
Background The Elevation Training Mask 2.0 (ETM) is a respiratory muscle device, designed to simulate altitude training. It works by reducing airflow through a valve system. During exercise, ETM could restore respiratory damage from post-infection phase of severe acute respiratory syndrome coronavir...
| Autores: | , , , , , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2025 |
| País: | España |
| Recursos: | Instituto de Investigación Biomédica y Sanitaria de Alicante (ISABIAL) |
| Repositorio: | r-ISABIAL. Repositorio Institucional de Producción Científica del Instituto de Investigación Biomédica y Sanitaria de Alicante |
| OAI Identifier: | oai:isabial.fundanetsuite.com:p11289 |
| Acesso em linha: | https://isabial.portalinvestigacion.com/publicaciones11289 https://doi.org/10.1186/s13102-025-01261-9 |
| Access Level: | acceso abierto |
| Palavra-chave: | CrossFit (R) Elevation training mask Respiratory muscles SARS-CoV-2 Spirometry parameters |
| Resumo: | Background The Elevation Training Mask 2.0 (ETM) is a respiratory muscle device, designed to simulate altitude training. It works by reducing airflow through a valve system. During exercise, ETM could restore respiratory damage from post-infection phase of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), allowing ventilatory restriction that works as resistance training for respiratory muscles. Aim To comparatively evaluate the spirometry parameters in CrossFit (R) practitioners training using ETM (EG), compared to a control group (CG). Methods In a single-blind randomized clinical trial, following the Consolidated Standards of Reporting Trials (CONSORT) recommendations, 20 trained male athletes were randomly assigned to an EG and a CG using simulated ETM device. Both groups completed 12 weeks of CrossFit (R) training after 1 month of finishing SARS-CoV-2 symptoms. Pre-(T1) and post-training (T2) testing included assessment of lung function and respiratory muscle strength. Results No significant differences (p > 0.05) were observed comparing EG and CG in any of spirometry parameters evaluated. Nevertheless, significant differences (p < 0.05) in behavior were observed throughout the 36 training sessions for maximum voluntary ventilation (MVV) and maximum inspiratory pressure (MIP) with a strong effect (eta 2p= 0.693). In addition, significant improvements (p < 0.05) were observed in MIP and MVV exclusively in the EG when comparing T1 vs.T2. Conclusion The findings suggest that the inclusion of ETM in a 12-week CrossFit (R) training program, in athletes returning to exercise post-SARS-CoV-2 infection, may have modest benefits compared to CG on lung function and respiratory muscle strength. Protocol registration ClinicalTrials.gov, identifier (ID NCT06806124). 25/01/2025 retrospectively registered. |
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