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Exerc Sci > Volume 31(2); 2022 > Article
Exercise Science 2022;31(2): 181-187.
Effects of Inspiratory Muscle Training on Respiration and Balance in Patients with Stroke: A Pilot Randomized Controlled Trial
Kwang-Bin An1 , Hye-Joo Jeon2 , Woo-Nam Chang3
1Department of Physical Therapy, Bobath Memorial Hospital, Seongnam, Korea
2Department of Physical Therapy, U1 University, Yeongdong, Korea
3Department of Physical Therapy, Yongin University, Yongin, Korea
Correspondence  Woo-Nam Chang , Tel: +82-31-8020-3114, Fax: +82-31-8020-2769, Email: changwoonam1@naver.com
Received: April 3, 2022;  Accepted: May 24, 2022.  Published online: May 31, 2022.
Respiratory function can be adversely affected after a cerebrovascular accident. This study aimed to determine whether inspiratory muscle training (IMT) changes the respiration and balance abilities of patients with stroke.
Twelve patients with stroke were randomly assigned to the study (n=6) and control (n=6) groups. The study and control groups received IMT and general physical therapy, respectively for 6 weeks, five times a week for 30 min/day. Inspiratory and expiratory functions and balance were measured pre- and post-evaluation.
After IMT intervention, the weight distribution ratio (WDR) for balance ability measurement was significantly decreased (p<.05), and the maximum inspiratory pressure (MIP), maximum inspiratory flow rate (MIFR), maximum inspiratory capacity (MIC), peak expiratory flow (PEF), forced expiratory volume in 1 second (FEV1), and limits of stability (LOS) were significantly increased in the study group (p<.05). A comparison of the study and control groups revealed statistically significant differences in MIP (p<0.01), MIFR (p<.01), MIC (p<.05), PEF (p<.05), FEV1 (p<.05), WDR (p<.01), and LOS (p<.05).
This study suggests that IMT is a useful and effective exercise intervention for patients with stroke.
Key words: Stroke, Inspiratory muscle training, Respiration, Balance
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