Effects of Water-Based Aerobic Interval Training in Patients With COPD: A RANDOMIZED CONTROLLED TRIAL

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Purpose:Chronic obstructive pulmonary disease promotes systemic repercussions, which can be minimized with physical exercise. This study investigated the effects of a water-based aerobic interval training program on the autonomic modulation of heart rate (HR), quality of life (QoL), and functional capacity (FC) of patients with chronic obstructive pulmonary disease.Methods:Nineteen patients with chronic obstructive pulmonary disease were enrolled in this randomized clinical trial and allocated to either the usual care group (n = 9) or training group (n = 10). Before and after 24 sessions of water-based physical training, the patients underwent evaluation of autonomic modulation of HR by analyzing the HR variability, QoL using the St George's Respiratory Questionnaire, and FC using 6-min walk test distance.Results:The results showed significant improvement when comparing the variables of HR variability, QoL, and FC in the training group in the pre- and post-training conditions (P < .05). In the usual care group, there was no significant difference for any of the variables. Negative correlations were found between HR variability and QoL (r =−0. 55; P = .01) and 6-min walk test distance and QoL (r =−0.49; P = .02).Conclusion:Water-based physical training promoted beneficial adaptations in the autonomic modulation of HR, QoL, and FC of patients with chronic obstructive pulmonary disease.

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