Pranayama or breath regulation is considered as an essential component of Yoga, which is said to influence the physiological systems. We present a comprehensive overview of scientific literature in the field of yogic breathing. We searched PubMed, PubMed Central and IndMed for citations for keywords "Pranayama" and "Yogic Breathing". The search yielded a total of 1400 references. Experimental papers, case studies and case series in English, revealing the effects of yogic breathing were included in the review. The preponderance of literature points to beneficial effects of yogic breathing techniques in both physiological and clinical setups. Advantageous effects of yogic breathing on the neurocognitive, psychophysiological, respiratory, biochemical and metabolic functions in healthy individuals were elicited. They were also found useful in management of various clinical conditions. Overall, yogic breathing could be considered safe, when practiced under guidance of a trained teacher. Considering the positive effects of yogic breathing, further large scale studies with rigorous designs to understand the mechanisms involved with yogic breathing are warranted.

Medical students confront enormous academic, psychosocial, and existential stress throughout their training, leading to a cascade of consequences both physically and psychologically. The declined cognitive function of these students interferes in their academic performance and excellence. The purpose of this study was to examine the effectiveness of a yogic meditation technique, mind sound resonance technique (MSRT), on cognitive functions of University Medical students in a randomized, two-way crossover study. In total, 42 healthy volunteers of both genders (5 males and 37 females) with mean age of 19.44 ± 1.31 years were recruited from a medical college in South India, based on the inclusion and exclusion criteria. A 10-day orientation in the technique of MSRT was given to all the recruited subjects after which each subject underwent both MSRT and supine rest (SR) sessions. All participants were randomized in a 1:1 ratio to receive a session of either MSRT or SR. After a day of washout, participants crossed over to receive the alternative intervention. The cognitive functions were assessed using 2 paper-pencil tasks called Digit Letter Substitution Test (DLST) and Six-Letter Cancelation Task (SLCT), before and immediately after both sessions. Both the groups showed significant improvement in net attempt of both DLST and SLCT, but the magnitude of change was more in the MSRT group than in the SR group. The MSRT group demonstrated significantly enhanced net scores in both SLCT (p < 0.001) and DLST (p < 0.001). The result of the present study suggests that a single session of MSRT, a Mind-Body Practice, may positively impact the performance in cognitive tasks by the University Medical Students.

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Background:There is very little evidence available on the effects of yoga-based breathing practices on response inhibition. The current study used stop-signal paradigm to assess the effects of yoga breathing with intermittent breath holding (YBH) on response inhibition among healthy volunteers.Materials and Methods:Thirty-six healthy volunteers (17 males + 19 females), with mean age of 20.31 ± 3.48 years from a university, were recruited in a within-subject repeated measures (RM) design. The recordings for stop signal task were performed on three different days for baseline, post-YBH, and post yogic breath awareness (YBA) sessions. Stop-signal reaction time (SSRT), mean reaction time to go stimuli (go RT), and the probability of responding on-stop signal trials (p [r/s]) were analyzed for 36 volunteers using RM analysis of variance.Results:SSRT reduced significantly in both YBH (218.33 ± 38.38) and YBA (213.15 ± 37.29) groups when compared to baseline (231.98 ± 29.54). No significant changes were observed in go RT and p (r/s). Further, the changes in SSRT were not significantly different among YBH and YBA groups.Conclusion:Both YBH and YBA groups were found to enhance response inhibition in the stop-signal paradigm. YBH could be further evaluated in clinical settings for conditions where response inhibition is altered.

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