PNF and Movement 2022; 20(1): 9-17
https://doi.org/10.21598/JKPNFA.2022.20.1.9
The Effects of Thoracic Mobilizing and Stretching Exercise on Maximal Inspiratory Pressure and Maximal Expiratory Pressure in Healthy Adults
Se-Yeon Kim P.T., B.S.⋅Young-In Hwang, P.T.1, Ph.D.⋅Ki-Song Kim P.T., Ph.D.1†
Department of Physical Therapy, Graduate School, Hoseo University
1Department of Physical Therapy, College of Life and Health Science, Hoseo University
Correspondence to: Ki-Song Kim (kskim68@hoseo.edu)
Received: November 29, 2021; Revised: January 6, 2022; Accepted: January 26, 2022; Published online: April 30, 2022.
© Korea Proprioceptive Neuromuscular Facilitation Association. All rights reserved.

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: The purpose of this study was to investigate the effect of chest mobilization and stretching exercises on maximal inspiratory pressure and maximal expiratory pressure in healthy adults who use computers for extended periods of time each day due to coronavirus disease 2019.
Methods: Twenty-five healthy adults in their 20s and without respiratory disease (15 female, 10 male) took part in this study. Two types of thoracic mobilizing exercises using a Theraband and three types of stretching exercises using a foam roller were performed. Maximum inspiratory pressure and maximum expiratory pressure were measured three times each before and after the interventions. In terms of statistical methods, the maximum inspiratory pressure due to chest mobility and stretching was compared with the maximum expiratory pressure using parametric paired t-test and non-parametric Wilcoxon signed-rank test.
Results: Maximum inspiratory pressure (p = .012) and maximum expiratory pressure (p = .006) showed significant differences before and after chest mobilization exercise and stretching among the participants.
Conclusion: The results of this study suggest that chest mobilization and stretching exercises are effective exercise methods for improving maximal inspiratory and expiratory pressure. They suggest that these exercises can prevent respiratory muscle weakness and improve aerobic fitness in healthy people as well as those in need of cardiorespiratory physiotherapy.
Keywords: Maximal expiratory pressure, Maximal inspiratory pressure, Stretching exercise, Thoracic mobilizing


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