Maximum Respiratory Pressure in Relation to Practice Respiratory Muscle Training Program in Asthmatic Patients
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- Category: Vol. 77, December 2009
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Maximum Respiratory Pressure in Relation to Practice Respiratory Muscle Training Program in Asthmatic Patients,MOHAMAD A. AL MAGHRABY
Abstract
Background and Purpose: Asthmatic patients have been reported to be sensitive to breathlessness, independent of the degree of airway obstruction. Hyperinflation seems to be the main factor leading to respiratory muscle weakness. The purpose of this study was to determine the effect of practicing respiratory muscles training program on the level of exercise tolerance and dyspnea perception in patients with mild per-sistence asthma.
Subjects and Methods: Thirty male patients aged 30.42 ±3.35 years with mild persistent asthma were participated in the study. The strength of respiratory muscle was determined by measuring maximum inspiratory pressure (MIP) and max-imum expiratory pressure (MEP) levels by using respiratory pressure gauges. Six-minute walk test (6-MWT) was applied to determine the six-minute walk distance (6-MWD). Dyspnea perception score was determined by using Modified Borg scale before and after practicing 6-MWT. Patients were categorized randomly into two homogenous groups; training and control. Patients of the control group were instructed to practice their usual daily activities and to keep in contact with the researcher. Patients of the training group were engaged in a supervised exercise program for strengthening respiratory muscles. The program lasted for 8-weeks (thrice weekly sessions) of total 24 sessions.
Results: The results showed a significant increase of mean MIP, MEP, 6-MWD and dyspnea score of the training group, where it was 66.73±7.32 Vs. 85.64±8.53 centimeter water (cm H2O) for MIP, 74.24±8.87 Vs. 89.65±8.72 (cm H2O) for MEP and was 560.42±44.85 Vs. 612.54±48.92 (m) for 6- MWD and the mean values of dyspnea score of the training group showed a highly significant reduction, where it was 4.25±0.60 Vs. 2.34±0.54 for pre- and post-measures respec-tively. Comparing the mean post-measures of MIP, MEP, 6- MWD and dyspnea score between the training and control groups, the results showed significant differences, where it was 85.64±8.53 Vs. 70.64±6.97 (cm H2O) for MIP, 89.65± 8.72 Vs. 72.56±9.32 (cm H2O) for MEP, 612.54±48.92 Vs. 570.39±44.81 (m) for 6-MWD and 2.34±0.54 Vs. 3.86±0.57 for dyspnea score for training and control groups respectively.
Conclusions: Respiratory muscle training program was considered as a useful tool in increasing maximal respiratory pressure, improving exercise tolerance, reducing symptoms of asthma attack in patients with mild persistent asthma.