A comparative study on the impact of different autonomous breathing exercises on regional pulmonary ventilation
10.3969/j.issn.1001-1242.2024.05.004
- VernacularTitle:不同自主呼吸训练方法对区域性肺通气影响的对比研究
- Author:
Zhijun GAO
1
;
Ke ZHAO
;
Meng DAI
Author Information
1. 第四军医大学航空航天医学系航空航天人机工效学教研室,陕西省西安市,710032
- Keywords:
electrical impedance tomography;
regional pulmonary ventilation;
diaphragmatic breathing;
pursed lip breathing;
chronic obstructive pulmonary disease
- From:
Chinese Journal of Rehabilitation Medicine
2024;39(5):634-640
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To explore the impact of different autonomous breathing exercises on regional pulmonary ventila-tion using electrical impedance tomography(EIT),in order to provide effective rehabilitation guidance for pa-tients with chronic obstructive pulmonary disease(COPD)in selecting exercise standards and methods. Method:A total of 28 healthy volunteers were recruited in the study,who performed the following breathing exercises in a comfortable standing position:①quiet breathing;②diaphragmatic breathing;③pursed-lip breath-ing;④pursed-lip combining diaphragmatic breathing.The four breathing modes were randomly determined for each subject.Chest EIT was continuously performed during the whole process.The tidal volume(TV),end-ex-piratory lung impedance(EELI),center of ventilation(CoV),global inhomogeneity index(GI)and regional ventilation delay(RVD)were compared during the four breathing modes. Result:Compared with quiet breathing,diaphragmatic breathing,pursed-lip breathing,and diaphragmatic pursed-lip breathing significantly increased TV(P＜0.05),reduced EELI(P＜0.05)and decreased CoV(P＜0.05,with in-creased ventral ventilation).GI of diaphragmatic breathing and pursed lip combining diaphragmatic breathing was significantly reduced(P＜0.05,more uniform ventilation),while RVD of pursed lip breathing and pursed lip combining diaphragmatic breathing was significantly increased(P＜0.05). Conclusion:Diaphragmatic breathing,pursed-lip breathing,and pursed-lip combining diaphragmatic breathing can effectively increase pulmonary ventilation and reduce pulmonary functional residual volume.However,the three breathing exercises have different impacts on pulmonary ventilation:pursed-lip breathing shifts ventilation more significantly towards the ventral side(smaller COV),and has a more significant regional ventilation de-layed(larger RVD),while diaphragmatic breathing improves ventilation homogeneity(smaller GI).Therefore,from the perspective of regional pulmonary ventilation,it is recommended that COPD patients should alternate between diaphragmatic breathing and pursed-lip breathing independently during breathing exercises to achieve better breathing exercise effects.
