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Effects of different Diaphragm Breathing Methods on the Diaphragm Thickening Ratio and Pulmonary Function in Young Adults
J Korean Soc Phys Med 2019;14(1):25-33
Published online February 28, 2019;  https://doi.org/10.13066/kspm.2019.14.1.25
© 2019 Korean Society of Physical Medicine.

Tae-Won Ha, PT⋅Myung-Mo Lee, PT, PhD1†

Department of Physical Therapy, Graduate School of Health and Medicine, Daejeon University
1Department of Physical Therapy, Daejeon University
Received October 12, 2018; Revised October 16, 2018; Accepted October 16, 2018.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
PURPOSE: This study examined the effective impact of self and resistive and ultrasound-biofeedback diaphragm breathing on the pulmonary function and diaphragm thickening ratio of young adults.
METHODS: Thirty normal adults were assigned randomly to three experimental groups (self- diaphragm breathing (n=9), resistive-diaphragm breathing (n=11), ultrasoundbiofeedback diaphragm breathing (n=10)). Each group participated for 15 minutes for times with a two minute rest between two sets. The subjects were assessed using the preand post- diaphragm thickening ratio and the pulmonary function (forced vital capacity, forced expiratory volume at one second, maximal voluntary ventilation, and respiratory rate) on the thirty subjects. A paired t-test was to determine the difference between before and after the experiment in each group of diaphragm breathing before and after the exercises. One-way ANOVA was used to determine the differences between the groups.
RESULTS: The forced vital capacity and maximal voluntary ventilation measurements revealed a significant difference in the resistive-diaphragm breathing group than the other two groups. On the other hand, there was no significant difference between the self-diaphragm breathing and ultrasound-biofeedback breathing groups.
CONCLUSION: The resistive-diaphragm breathing group showed greater improvement in the pulmonary function than the other two groups. Therefore, resistivediaphragm breathing will improve the pulmonary function on normal young adults.
Keywords : Breathing exercise, Pulmonary function, Diaphragm breathing


February 2019, 14 (1)
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