Effect of blowing balloon exercise on modulating perceived stress, pulmonary function tests, ventricular depolarization and repolarization
Background: Stress affects various physiological processes of the body. It induces cardiac changes through sympatho-vagal imbalance. Among the various remedies for stress, studies have proven the effectiveness of breathing exercises like yoga and jogging, but the effect of blowing balloon (another form of breathing exercise) on alleviating stress has not been studied yet.
Objective: The objective of current study was to determine the effect of blowing balloons exercise in improving pulmonary function tests and reducing stress-induced cardiac changes.
Materials and methods: This quasi-experimental study was conducted at Department of Physiology, Islamic International Medical College, Rawalpindi from 1st Feb 2016 to 31st Jan 2017. Sixty diagnosed students of moderate stress were included in the study after fulfilling the 14-item DASS (depression anxiety stress scale) Proforma. Pulmonary function tests, electrocardiogram (ECG) and DASS score of the participants was measured before and after a supervised blowing balloon exercise. Ten minutes ECG of the participants was recorded and the data were analyzed for measuring QTc interval and T peak to T end interval. These parameters were recorded by using Power lab model yam 4/25T and the data were analyzed by using software, lab chart 8 pro.
Results: Blowing balloon exercise resulted in significant reduction of DASS score of the study participants (p<0.001). Tidal volume, vital capacity, forced vital capacity, forced expiratory volume in one second and the ratio of forced expiratory volume in one second to the forced vital capacity were significantly improved (p<0.001) after blowing balloon exercise. The QTc interval of the participants were significantly reduced (p<0.05) after blowing balloon exercise.
Conclusion: Blowing balloon exercise is an effective way of improving pulmonary function tests and reducing stress.