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. 2023 Jan;28(1):e1972.
doi: 10.1002/pri.1972. Epub 2022 Sep 11.

Effects of continuous aerobic training associated with resistance training on maximal and submaximal exercise tolerance, fatigue, and quality of life of patients post-COVID-19

Bruna T S Araújo  1 , Ana Eugênia V R Barros  1 , Daiara T X Nunes  1 , Maria Inês Remígio de Aguiar  2 , Viviane W Mastroianni  1 , Juliana A F de Souza  1 , Juliana Fernades  3 , Shirley Lima Campos  1 , Daniella Cunha Brandão  1 , Armele Dornelas de Andrade  1
Affiliations

Effects of continuous aerobic training associated with resistance training on maximal and submaximal exercise tolerance, fatigue, and quality of life of patients post-COVID-19

Bruna T S Araújo et al. Physiother Res Int. 2023 Jan.

Abstract

Background and purpose: Dyspnea, fatigue, and reduced exercise tolerance are common in post-COVID-19 patients. In these patients, rehabilitation can improve functional capacity, reduce deconditioning after a prolonged stay in the intensive care unit, and facilitate the return to work. Thus, the present study verified the effects of cardiopulmonary rehabilitation consisting of continuous aerobic and resistance training of moderate-intensity on pulmonary function, respiratory muscle strength, maximum and submaximal tolerance to exercise, fatigue, and quality of life in post-COVID-19 patients.

Methods: Quasi-experimental study with a protocol of 12 sessions of an outpatient intervention. Adults over 18 years of age (N = 26) with a diagnosis of COVID-19 and hospital discharge at least 15 days before the first evaluation were included. Participants performed moderate-intensity continuous aerobic and resistance training twice a week. Maximal and submaximal exercise tolerance, lung function, respiratory muscle strength, fatigue and quality of life were evaluated before and after the intervention protocol.

Results: Cardiopulmonary rehabilitation improved maximal exercise tolerance, with 18.62% increase in peak oxygen consumption (VO2peak) and 29.05% in time to reach VO2 peak. VE/VCO2 slope reduced 5.21% after intervention. We also observed increased submaximal exercise tolerance (increase of 70.57 m in the 6-min walk test, p = 0.001), improved quality of life, and reduced perceived fatigue after intervention.

Discussion: Patients recovered from COVID-19 can develop persistent dysfunctions in almost all organ systems and present different signs and symptoms. The complexity and variability of the damage caused by this disease can make it difficult to target rehabilitation programs, making it necessary to establish specific protocols. In this work, cardiopulmonary rehabilitation improved lung function, respiratory muscle strength, maximal and submaximal exercise tolerance, fatigue and quality of life. Continuous aerobic and resistance training of moderate intensity proved to be effective in the recovery of post-COVID-19 patients.

Keywords: COVID-19; exercise tolerance; fatigue; long-COVID-19; quality of life; rehabilitation.

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Conflict of interest statement

The authors have no conflicts of interest.

Figures

FIGURE 1
FIGURE 1
Flowchart of study sample
FIGURE 2
FIGURE 2
Distance walked before and after cardiopulmonary rehabilitation
FIGURE 3
FIGURE 3
Comparison between feeling of fatigue (a) and impact of fatigue (b) before and after intervention
See this image and copyright information in PMC

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