The Effect of Integration Between Respiratory Muscle Training and Abdominal Drawing-in Maneuver on Decreased Pulmonary Function in Young Subjects

The aim of this study was to investigate the effects of respiratory muscle training (RMT) with abdominal drawing-in maneuver (ADIM) on pulmonary function. Twenty-two subjects with restrictive breathing participated in this study. All the subjects were randomly assigned to three groups (7 subjects in RMT group, 7 subjects in RMT with ADIM group, 8 subjects in control group). The first group performed the RMT by using incentive respiratory spirometer (IRS). The second group performed the RMT by using IRS and the ADIM by using a Stabilizer. The exercises were conducted over four days. The pulmonary function was evaluated using the spirometer to measure the force exploratory volume in 1 second (FEV1) and forced vital capacity (FVC). Measurements were conducted on the first day and the last day. A paired-t test was used for pre-post changes and the change rates in FVC and REV1 among each group were investigated by a one-way ANOVA. The findings of the the study were as follows: 1) There were significant differences of FVC and REV1 between pre and post in the two training groups (p