Thesis (Ph.D.) - Cairo University - Faculty of Physical Therapy - Department of Physical Therapy for Cardiopulmonary & Geriatrics disorders

Background and Purpose: There are well-known benefits of Breathing Exercise on ventilatory functions in singers, as well as impact of training to manage breathing while performance. Therefore, the aim of this study was to conduct the effect of lung boost as a respiratory muscle trainer on selected ventilatory function in choral singers. Materials and Methods: Sixty subjects of both sexes 36 girls and 24 boys with age ranged from 10-20 years old were chosen from Arabic Music Band in Qasr Al-Thaqafa in Fayoum city they were assigned into 2 equal groups in numbers group (A)(21 girls and 9 boys) while group B (15 girls and 15 boys).Both of groups (A) and (B) carried out traditional exercise program for10 weeks 3 sessions per week with deep breathing exercise in form of(diaphragmatic, nose breathing exercises and exercise connected with respiration using upper limbs)only 30 subjects in group (A) trained with respiratory muscle training by Lung Boost plus the traditional exercise program . Ventilatory functions were measured for both groups (Forced Expiratory Volume in one second (FEV1), Forced Expiratory Volume in six second (FEV6), ratio of FEV1/FEV6 and calculated Maximal Voluntary Ventilation (MVV) at the beginning of the study and after 10 weeks. Results: Comparing both groups{u2018} percent of change revealed that there were statistically significant increases in FEV1 6.46%, FEV6 3.32%, FEV1/FEV6 3.19%, MVV 6.38% (p<0.05) in favor of group (A) and FEV1 1.20%, FEV6 0.22%, FEV1/FEV6 1.10%, MVV 1.18% in Group (B)

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