The effect of different protocols and loads used on the inspiratory muscle training of COPD individuals: a systematic review
DOI:
https://doi.org/10.1590/1809-2950/220045110822PT%20Keywords:
Pulmonary Disease, Chronic Obstructive, Breathing ExercisesAbstract
Chronic obstructive pulmonary disease (COPD) causes changes in the musculoskeletal system, including the respiratory muscles, which are responsible for increasing dyspnea and reducing functional capacity. Several studies have already demonstrated the effectiveness of inspiratory muscle training (IMT), therefore it should be part of the pulmonary rehabilitation program. However, it is still necessary to investigate the best way to do it. Thus, the aim of this study was to investigate, through a systematic review, the effectiveness of different protocols and IMT loads on the outcomes of inspiratory muscle strength and endurance, as well as functional capacity and dyspnea reduction. This is a systematic review carried out in accordance with the PRISMA protocol. The search was carried out in February 2021 in the following databases: PUBMED, SCIELO, PEDRO. To search for articles, the following descriptors were selected: “COPD“; “breathing exercises, resistive training, respiratory muscle training“. A total of 398 patients were included in the 10 studies, all previously diagnosed with COPD. Different devices were used for TMI and protocols varied in relation to loads and progression. The most used device to perform TMI was the Threshold, with load established according to the percentage of MIP (30-80%), readjusted according to new measurements every 1 or 2 weeks. There was an equivalence of positive results found both in training with low loads and with high loads, however, it is not yet possible to conclude which is the best IMT protocol for individuals with COPD. Inspiratory muscle strength, functional capacity, and dyspnea get better with TMI.
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