Effects of smartphone breathing application on functional capacity and respiratory muscle strength in patients with heart failure
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Abstract
Background: Patients with heart failure (HF) present muscle weakness including respiratory muscle. Slow breathing technique can alleviate dyspnea symptoms, increased respiratory performance and improved functional capacity.
Objective: To examine effects of a slow breathing training (SBT) by using smartphone application on respiratory muscle strength and functional capacity in HF patients.
Methods: Thirty-four participants with HF were enrolled aged 40-80 years. All participants were required to perform maximal inspiratory pressure (MIP), maximal expiratory pressure (MEP) and functional capacity before and after 8-week intervention program. Participants who received SBT by the smartphone breathing application were informed to implement a breathing rate of 7 times per minute for 2 sets per day. To compare within and between group of SBT and the control, two-way mixed ANOVA was used with SPSS program.
Results: After 8-week training program, 13 participants completed in the study (6 in the intervention and 7 in the control groups). Increasing in MIP and MEP were observed in the SBT group (D18.50 cmH2O and และ D 20.17 cmH2O, respectively). In addition, statistical significance was shown in the SBT group compared to the control group (D 27.60 cmH2O, p=0.003). However, neither within the SBT and control nor between these groups reported significant differences in functional capacity (p<0.05).
Conclusion: Participants who received the SBT had an improvement in respiratory muscle after 8-week program. However, no significant difference was noted in functional capacity between SBT and the control in HF patients.
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