맥켄지 운동이 젊은 성인의 호흡 기능과 호흡근에 미치는 즉각적인 효과

Abstract

Purpose: Habitual abnormal postures, such as forward head posture, rounded shoulders, and decreased lumbar lordosis, can adversely affect respiratory function by limiting thoracic rib cage expansion and lung capacity. This study aimed to investigate the immediate effects of a single session of Mckenzie exercises on respiratory function and respiratory muscle. Methods: Eighteen young adults (mean age, 24.22 ± 2.415), including 4 men and 14 women, participated in the study. Spirometry tests were conducted before and after the single exercise session, which consisted of two types of Mckenzie exercises performed in 20 repetitions each. Forced vital capacity (FVC), forced expiratory volume in 1 s (FEV1), FEV1/FVC ratio, and peak expiratory flow (PEF) were measured to evaluate respiratory function, and maximal inspiratory pressure (MIP), maximal expiratory pressure (MEP) were measured to assess respiratory muscle strength. Paired-sample t-tests were employed to analyze the significance of respiratory measurements pre- and post-Mckenzie exercises, with a significance level set at 0.05. Results: A significant increase in MIP was found after Mckenzie exercises (p=.012), indicating improved inspiratory muscle strength. However, no significant changes were observed in FVC, FEV1, FEV1/FVC, PEF, and MEP. Conclusion: Mckenzie exercises, designed to stretch respiratory muscles and correct thoracic rib cage alignment through spinal extension, demonstrated an immediate positive effect on MIP. Therefore, Mckenzie exercises could be considered a valuable chest expansion exercise in respiratory rehabilitation programs. More studies are warranted to explore the potential long-term effects of Mckenzie exercises on respiratory function and respiratory muscle strength.