Analysis of Physiological Signals During Therapeutic Yoga Practice

Practicing yoga has become more effective among all kind of age groups, but researches focusing on the movement related yoga postures are limited. This work analysis the effect of therapeutic yoga on biosignals. Physiological parameter variations between yoga trainers and untrained subjects while performing the selected asanas including pranayama, dwipadapitham, apanasana, jathara parivrtti has been studied. ECG and EMG are acquired simultaneously before, during and after the specially framed yoga practice sequence. These signals are processed suitably to measure the time and frequency domain features and analyze their variations over the period of recording. HRV analysis shows variation of MHR, LF/HF and SD1/SD2 with increase during posture and decrease with rest. pNN50 shows decrease during posture and increase during rest. Further study will helpful in designing special yoga course for individuals based on their requirements and thus complementing their medical support as well.