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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.
ABSTRACT
PURPOSE:
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.
METHODS:
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.
RESULTS:
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).
CONCLUSIONS:
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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