COMPARISON OF EXPIRATORY AND INSPIRATORY MUSCLE TRAINING ALONG WITH BUTEYKO BREATHING TECHNIQUE ON RESPIRATORY MUSCLE STRENGTH, PEAK EXPIRATORY COUGH FLOW, EXERCISE CAPACITY AND PERCIEVED DYSPNEA IN POST CABG PATIENTS.- RANDOMISED CLINICAL TRIAL

The respiratory musculature comprises of inspiratory and expiratory muscles with focus, to date, on inspiratory muscle training (IMT). Evidence suggests that inspiratory and expiratory muscle weakness varies between diseases with expiratory muscles shown to weaken to a lesser extent than inspiratory in patients with COPD, but to a greater extent in MS. Therefore determining the extend of weakness of each muscle group separately in CABG would be of great importance when planning the rehabilitation protocol. The expiratory muscles were specifically trained in several settings other than CABG like multiple sclerosis, neuromuscular diseases and healthy adults. Such training tended to enhance respiratory muscle strength, cough efficacy, reduction in the sensation of respiratory effort and dyspnoea during exercise.Buteyko breathing technique (BBT) is a breathing control exercise originally developed for asthmatic patients. Few studies aimed to compare the effect of BBT and spirometric training on arterial blood gases and breath holding time after CABG. To the best of our knowledge no studies till date have evaluated the effect of BBT on lung function, peak expiratory cough flow, exercise capacity and perceived dyspnoea or the additive effect of BBT with respiratory muscle training in post CABG patients.