Comparison of Costal Breathing Exercise with Sustained Maximum Inspiration, Flow-oriented and Volume-oriented Incentive Spirometry on Cardiac Autonomic Function in Healthy Adults

Main Article Content

Sasipa Buranapuntalug
Preeyaphorn Songsorn

Abstract

Background: Breathing exercises are important in physical therapy for preventing respiratory system complications. However, there is limited data regarding the effect of incentive spirometer training on cardiac autonomic nervous system (cANS).


Objective: This study aims to compare the effects of three methods of breathing exercise (costal breathing exercise with sustained maximum inspiration (CSMI), flow-oriented incentive spirometry (FIS), and volume-oriented incentive spirometry (VIS)) against spontaneous breathing (SB) on changes in cANS activity.


Methods: Twenty-four healthy participants were randomly assigned to perform three types of breathing exercises (CSMI, FIS, and VIS). Heart rate variability (HRV) parameters were analysed, including the Standard deviation of NN intervals (SDNN), Square root of the mean of the squares of successive NN interval differences (RMSSD), Low frequency (LF), High frequency (LF) power และ Low frequency/High frequency ratio (LF/HF).


Results: Compared to SB, SDNN significantly increased with all breathing exercise methods (p<0.001). RMSSD significantly increased in the FIS (p=0.031) and VIS (p=0.031). LF and LF/HF significantly increased with all breathing exercise methods (LF (ms2): CSMI (p=0.005), FIS (p=0.001), and VIS (p<0.001); Ln-LF: CSMI (p=0.005), FIS (p=0.001), and VIS (p<0.001); LF/HF: CSMI (p<0.001), FIS (p=0.003), and VIS (p<0.001)).


Conclusion: CSMI, FIS, and VIS affect the cardiac autonomic nervous system, specifically by promoting parasympathetic nervous system activity.

Article Details

How to Cite
1.
Buranapuntalug S, Songsorn P. Comparison of Costal Breathing Exercise with Sustained Maximum Inspiration, Flow-oriented and Volume-oriented Incentive Spirometry on Cardiac Autonomic Function in Healthy Adults. Thai J Phys Ther [Internet]. 2026 Apr. 22 [cited 2026 Nov. 6];48(1):15-24. Available from: https://he02.tci-thaijo.org/index.php/tjpt/article/view/278284
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Research Articles

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