1 2307 144 TRAINING TO YOGA RESPIRATION SELECTIVELY INCREASES RESPIRATORY SENSATION IN HEALTHY MAN. BECAUSE YOGA PRACTITIONERS THINK THEY ARE BENEFITING FROM THEIR BREATH TRAINING WE HYPOTHESIZED THAT YOGA RESPIRATION TRAINING (YRT) COULD MODIFY THE RESPIRATORY SENSATION. YOGA RESPIRATION (YR) ("UJJAI") CONSISTED OF VERY SLOW, DEEP BREATHS (2-3 MIN(-1)) WITH SUSTAINED BREATH-HOLD AFTER EACH INSPIRATION AND EXPIRATION. AT INCLUSION IN THE STUDY AND AFTER A 2-MONTH YRT PROGRAM, WE DETERMINED IN HEALTHY SUBJECTS THEIR EUPNEIC VENTILATORY PATTERN AND THEIR CAPACITY TO DISCRIMINATE EXTERNAL INSPIRATORY RESISTIVE LOADS (RESPIRATORY SENSATION), DIGITAL TACTILE MECHANICAL PRESSURES (SOMESTHETIC SENSATION) AND SOUND-PRESSURE STIMULATIONS (AUDITORY SENSATION). DATA WERE COMPARED TO A GENDER-, AGE-, AND WEIGHT-MATCHED CONTROL GROUP OF HEALTHY SUBJECTS WHO DID NOT UNDERGO THE YRT PROGRAM BUT WERE EXPLORED AT THE SAME EPOCHS. AFTER THE 2-MONTH YRT PROGRAM, THE RESPIRATORY SENSATION INCREASED. THUS, BOTH THE EXPONENT OF THE STEVEN'S POWER LAW (PSI=KPHIN) AND THE SLOPE OF THE LINEAR-LINEAR PLOT BETWEEN PSI AND MOUTH PRESSURE (PM) WERE SIGNIFICANTLY HIGHER, AND THE INTERCEPT WITH ORDINATE AXIS OF THE PSI VERSUS PM RELATIONSHIP WAS LOWER. AFTER YRT, THE PEAK PM DEVELOPED AGAINST INSPIRATORY LOADS WAS SIGNIFICANTLY LOWER, REDUCING THE LOAD-INDUCED ACTIVATION OF RESPIRATORY AFFERENTS. YRT INDUCED LONG-LASTING MODIFICATIONS OF THE VENTILATORY PATTERN WITH A SIGNIFICANT LENGTHENING OF EXPIRATORY DURATION AND A MODEST TIDAL VOLUME INCREASE. NO SIGNIFICANT CHANGES IN SOMESTHETIC AND AUDITORY SENSATIONS WERE NOTED. IN THE CONTROL GROUP, THE RESPIRATORY SENSATION WAS NOT MODIFIED DURING A 15-MIN PERIOD OF YOGA RESPIRATION, DESPITE THE PEAK PM CHANGES IN RESPONSE TO ADDED LOADS WERE THEN SIGNIFICANTLY REDUCED. THESE DATA SUGGEST THAT TRAINING TO YOGA RESPIRATION SELECTIVELY INCREASES THE RESPIRATORY SENSATION, PERHAPS THROUGH ITS PERSISTENT CONDITIONING OF THE BREATHING PATTERN.	2005	
                                                                                                                                                                                                                                                                                                                                                         
2  996  30 EFFECTS OF INSPIRATORY MUSCLE TRAINING AND YOGA BREATHING EXERCISES ON RESPIRATORY MUSCLE FUNCTION IN INSTITUTIONALIZED FRAIL OLDER ADULTS: A RANDOMIZED CONTROLLED TRIAL. BACKGROUND: IN OLDER ADULTS, RESPIRATORY FUNCTION MAY BE SERIOUSLY COMPROMISED WHEN A MARKED DECREASE OF RESPIRATORY MUSCLE (RM) STRENGTH COEXISTS WITH COMORBIDITY AND ACTIVITY LIMITATION. RESPIRATORY MUSCLE TRAINING HAS BEEN WIDELY STUDIED AND RECOMMENDED AS A TREATMENT OPTION FOR PEOPLE WHO ARE UNABLE TO PARTICIPATE IN WHOLE-BODY EXERCISE TRAINING (WBET); HOWEVER, THE EFFECTS OF INSPIRATORY MUSCLE TRAINING AND YOGA BREATHING EXERCISES ON RM FUNCTION REMAIN UNKNOWN, SPECIFICALLY IN IMPAIRED OLDER ADULTS. PURPOSE: TO EVALUATE THE EFFECTS OF INSPIRATORY THRESHOLD TRAINING (ITT) AND YOGA RESPIRATORY TRAINING (YRT) ON RM FUNCTION IN INSTITUTIONALIZED FRAIL OLDER ADULTS. METHODS: EIGHTY-ONE RESIDENTS (90% WOMEN; MEAN AGE, 85 YEARS), WHO WERE UNABLE TO PERFORM WBET (INABILITY TO INDEPENDENTLY WALK MORE THAN 10 M), WERE RANDOMLY ASSIGNED TO A CONTROL GROUP OR ONE OF THE 2 EXPERIMENTAL GROUPS (ITT OR YRT). EXPERIMENTAL GROUPS PERFORMED A SUPERVISED INTERVAL-BASED TRAINING PROTOCOL, EITHER THROUGH THRESHOLD INSPIRATORY MUSCLE TRAINING DEVICE OR YOGA BREATHING EXERCISES, WHICH LASTED 6 WEEKS (5 DAYS PER WEEK). OUTCOME MEASURES WERE COLLECTED AT 4 TIME POINTS (PRETRAINING, INTERMEDIATE, POSTTRAINING, AND FOLLOW-UP) AND INCLUDED THE MAXIMUM RESPIRATORY PRESSURES (MAXIMUM INSPIRATORY PRESSURE [MIP] AND MAXIMUM EXPIRATORY PRESSURE [MEP]) AND THE MAXIMUM VOLUNTARY VENTILATION (MVV). RESULTS: SEVENTY-ONE RESIDENTS COMPLETED THE STUDY: CONTROL (N = 24); ITT (N = 23); YRT (N = 24). THE TREATMENT ON HAD A SIGNIFICANT EFFECT ON MIP YRT (F(6,204) = 6.755, P < .001, ETA2 = 0.166), MEP (F(6,204) = 4.257, P < .001, ETA2 = 0.111), AND MVV (F(6,204) = 5.322, P < .001, ETA2 = 0.135). ANALYSES SHOWED THAT THE YRT GROUP HAD A GREATER INCREASE OF RM STRENGTH (MIP AND MEP) AND ENDURANCE (MVV) THAN CONTROL AND/OR ITT GROUPS. CONCLUSION: YOGA RESPIRATORY TRAINING APPEARS TO BE AN EFFECTIVE AND WELL-TOLERATED EXERCISE REGIMEN IN FRAIL OLDER ADULTS AND MAY THEREFORE BE A USEFUL ALTERNATIVE TO ITT OR NO TRAINING, TO IMPROVE RM FUNCTION IN OLDER POPULATION, WHEN WBET IS NOT POSSIBLE.	2014	
                                                                  
3  880  29 EFFECT OF YOGA TRAINING ON HANDGRIP, RESPIRATORY PRESSURES AND PULMONARY FUNCTION. ALTHOUGH THERE ARE A NUMBER OF REPORTS ON THE EFFECT OF YOGA TRAINING ON PULMONARY FUNCTIONS, VERY FEW STUDIES HAVE BEEN UNDERTAKEN ON THE EFFECT OF YOGA TRAINING ON RESPIRATORY PRESSURES AND HANDGRIP ENDURANCE. HENCE THE PRESENT WORK WAS PLANNED TO STUDY THE EFFECT OF YOGA TRAINING ON HAND GRIP STRENGTH (HGS), HAND GRIP ENDURANCE (HGE), MAXIMUM EXPIRATORY PRESSURE (MEP), MAXIMUM INSPIRATORY PRESSURE (MIP), FORCED EXPIRATORY VOLUME (FEV), FORCED EXPIRATORY VOLUME IN FIRST SECOND (FEV1) AND PEAK EXPIRATORY FLOW RATE (PEFR). 20 SCHOOL CHILDREN IN THE AGE GROUP OF 12 TO 15 YEARS WERE GIVEN YOGA TRAINING (ASANS AND PRANAYAMS) FOR 6 MONTHS. 20 AGE AND GENDER-MATCHED STUDENTS FORMED THE CONTROL GROUP. YOGA TRAINING PRODUCED STATISTICALLY SIGNIFICANT (P < 0.05) INCREASE IN HGS AND HGE. MEP, MIP, FEV, FEV1 AND PEFR ALSO INCREASED SIGNIFICANTLY (P < 0.001) AFTER THE YOGA TRAINING. IN CONTRAST, THE INCREASE IN THESE PARAMETERS IN THE CONTROL GROUP WAS STATISTICALLY INSIGNIFICANT. OUR STUDY SHOWS THAT YOGA TRAINING FOR 6 MONTHS IMPROVES LUNG FUNCTION, STRENGTH OF INSPIRATORY AND EXPIRATORY MUSCLES AS WELL AS SKELETAL MUSCLE STRENGTH AND ENDURANCE. IT IS SUGGESTED THAT YOGA BE INTRODUCED AT SCHOOL LEVEL IN ORDER TO IMPROVE PHYSIOLOGICAL FUNCTIONS, OVERALL HEALTH AND PERFORMANCE OF STUDENTS.	2003	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
4  438  32 CARDIOVASCULAR AND RESPIRATORY EFFECT OF YOGIC SLOW BREATHING IN THE YOGA BEGINNER: WHAT IS THE BEST APPROACH? SLOW BREATHING INCREASES CARDIAC-VAGAL BAROREFLEX SENSITIVITY (BRS), IMPROVES OXYGEN SATURATION, LOWERS BLOOD PRESSURE, AND REDUCES ANXIETY. WITHIN THE YOGA TRADITION SLOW BREATHING IS OFTEN PAIRED WITH A CONTRACTION OF THE GLOTTIS MUSCLES. THIS RESISTANCE BREATH "UJJAYI" IS PERFORMED AT VARIOUS RATES AND RATIOS OF INSPIRATION/EXPIRATION. TO TEST WHETHER UJJAYI HAD ADDITIONAL POSITIVE EFFECTS TO SLOW BREATHING, WE COMPARED BRS AND VENTILATORY CONTROL UNDER DIFFERENT BREATHING PATTERNS (EQUAL/UNEQUAL INSPIRATION/EXPIRATION AT 6 BREATH/MIN, WITH/WITHOUT UJJAYI), IN 17 YOGA-NAIVE YOUNG HEALTHY PARTICIPANTS. BRS INCREASED WITH SLOW BREATHING TECHNIQUES WITH OR WITHOUT EXPIRATORY UJJAYI (P < 0.05 OR HIGHER) EXCEPT WITH INSPIRATORY + EXPIRATORY UJJAYI. THE MAXIMAL INCREASE IN BRS AND DECREASE IN BLOOD PRESSURE WERE FOUND IN SLOW BREATHING WITH EQUAL INSPIRATION AND EXPIRATION. THIS CORRESPONDED WITH A SIGNIFICANT IMPROVEMENT IN OXYGEN SATURATION WITHOUT INCREASE IN HEART RATE AND VENTILATION. UJJAYI SHOWED SIMILAR INCREASE IN OXYGEN SATURATION BUT SLIGHTLY LESSER IMPROVEMENT IN BAROREFLEX SENSITIVITY WITH NO CHANGE IN BLOOD PRESSURE. THE SLOW BREATHING WITH EQUAL INSPIRATION AND EXPIRATION SEEMS THE BEST TECHNIQUE FOR IMPROVING BAROREFLEX SENSITIVITY IN YOGA-NAIVE SUBJECTS. THE EFFECTS OF UJJAYI SEEMS DEPENDENT ON INCREASED INTRATHORACIC PRESSURE THAT REQUIRES GREATER EFFORT THAN NORMAL SLOW BREATHING.	2013	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
5  878  37 EFFECT OF YOGA TRAINING AND DETRAINING ON RESPIRATORY MUSCLE STRENGTH IN PRE-PUBERTAL CHILDREN: A RANDOMIZED TRIAL. OBJECTIVE: TO EVALUATE THE EFFECT OF YOGA ON FORCED VITAL CAPACITY (FVC), FORCED EXPIRATORY VOLUME IN I(ST) SECOND (FEV1), PEAK EXPIRATORY FLOW RATE (PEFR), FEVI/FVC RATIO, AND PULMONARY PRESSURES [MAXIMUM INSPIRATORY PRESSURE (MIP), MAXIMUM EXPIRATORY PRESSURE (MEP) AT THE END OF 3 MONTHS YOGA TRAINING AND THE DETRAINING EFFECT ON THE ABOVE PARAMETERS IN 7-9-YEARS-OLD SCHOOL GOING CHILDREN. MATERIALS AND METHODS: A TOTAL OF 100 PARTICIPANTS WERE RECRUITED FROM A SCHOOL IN BANGALORE. AFTER BASELINE ASSESSMENTS, THE PARTICIPANTS WERE RANDOMLY ALLOCATED TO EITHER YOGA OR PHYSICAL ACTIVITY GROUP. INTERVENTION WAS GIVEN FOR 3 MONTHS, AND MEASURES OF PULMONARY FUNCTION AND PULMONARY PRESSURES WERE DETERMINED IMMEDIATELY POST-INTERVENTION AND AT 3-MONTHS FOLLOW-UP. RESULTS: ALTHOUGH SIGNIFICANT INCREASE WAS OBSERVED IN FVC, FEV1, PEFR, FEV1/FVC, MIP, AND MEP AT POST-INTERVENTION, THERE WERE NO SIGNIFICANT DIFFERENCES BETWEEN THE TWO STUDY GROUPS AFTER ADJUSTING FOR HEIGHT AND AGE POST TRAINING . HOWEVER, MIP INCREASED SIGNIFICANTLY IN BOTH THE GROUPS POST-INTERVENTION, BUT THE YOGA GROUP PERFORMED SIGNIFICANTLY HIGHER THAN THE PE GROUP. THE EFFECTS OF TRAINING DID NOT FADE OFF EVEN AFTER 3 MONTHS OF DETRAINING. IN FACT, THE FVC AND FEV1 CONTINUED TO INCREASE SIGNIFICANTLY. A TREND OF DECREASE WAS OBSERVED IN PEFR, MIP, AND MEP. HOWEVER, THE VALUES DID NOT REGRESS TO THE BASELINE VALUE. CONCLUSIONS: THIS STUDY SUGGESTS THAT PRACTICE OF YOGA FOR A SHORT DURATION (3 MONTHS) OF TIME CAN SIGNIFICANTLY IMPROVE RESPIRATORY MUSCLE STRENGTH IN PEDIATRIC POPULATION.	2014	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
6 1610  36 METABOLIC AND VENTILATORY CHANGES DURING AND AFTER HIGH-FREQUENCY YOGA BREATHING. BACKGROUND PRACTICING HIGH-FREQUENCY YOGA BREATHING (HFYB) INDUCED A HYPERMETABOLIC STATE IN A SINGLE SUBJECT DURING THE PRACTICE BUT THE EFFECT HAS NOT BEEN STUDIED IN MULTIPLE PRACTITIONERS. MATERIAL AND METHODS HEALTHY MALE VOLUNTEERS (N=47, GROUP MEAN AGE +/- S.D., 23.2 +/- 4.1 YEARS) WERE RECRUITED AS AN EXPERIMENTAL GROUP AND ANOTHER TWENTY VOLUNTEERS WERE RECRUITED AS A CONTROL GROUP. THE EXPERIMENTAL GROUP PRACTICED EITHER HFYB (BREATH RATE 1.0 HZ) OR BREATH AWARENESS (BAW) ON TWO SEPARATE DAYS. THE SEQUENCE WAS REVERSED FOR ALTERNATE PARTICIPANTS. THE CONTROL GROUP WAS ASSESSED UNDER SIMILAR CONDITIONS WHILE SITTING AT EASE. THE BREATH RATE (RR), TIDAL VOLUME (VT), VENTILATION (VE), VO2, VCO2, ARTERIAL PCO2 AND ENERGY EXPENDITURE (EE KCAL/DAY) WERE ASSESSED FOR 35 MINUTES USING AN OPEN CIRCUIT OXYGEN CONSUMPTION ANALYZER. THE ASSESSMENT PERIOD WAS DIVIDED INTO BEFORE, DURING AND AFTER CONDITIONS. REPEATED MEASURES ANALYSES OF VARIANCE (ANOVA) WERE USED TO COMPARE DATA RECORDED DURING AND AFTER THE TWO PRACTICES WITH DATA RECORDED BEFORE. BEFORE-AFTER COMPARISONS IN THE CONTROL GROUP WERE WITH PAIRED T-TESTS. RESULTS THE MOST RELEVANT SIGNIFICANT CHANGES WERE INCREASES IN VE, VO2, VCO2 AND EE DURING HFYB, WHILE THE SAME VARIABLES DECREASED DURING THE CONTROL PERIOD. HOWEVER AFTER HFYB THERE WAS NO CHANGE IN VO2 OR EE, ALTHOUGH VE DECREASED AS IT DID AFTER THE CONTROL PERIOD. CONCLUSIONS HFYB INDUCES A HYPERMETABOLIC STATE FOR THE DURATION OF THE PRACTICE WHICH RETURNS TO BASELINE AFTER HFYB SUGGESTING A POSSIBLE APPLICATION FOR HFYB IN HYPOMETABOLIC STATES.	2015	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
7 1875  25 REACTION TIME FOLLOWING YOGA BELLOWS-TYPE BREATHING AND BREATH AWARENESS. THE REACTION TIME (RT) WAS ASSESSED IN TWO GROUPS OF HEALTHY MALES, YOGA GROUP (M AGE = 29.0 YR.) AND NON-YOGA OR CONTROL GROUP (M AGE = 29.0 YR.), WITH 35 PARTICIPANTS EACH. THE YOGA GROUP HAD AN AVERAGE EXPERIENCE OF 6 MONTHS, WHILE THE CONTROL GROUP WAS YOGA-NAIVE. THE YOGA GROUP WAS ASSESSED IN TWO SESSIONS, (I) BHASTRIKA PRANAYAMA OR BELLOWS BREATHING AND (II) BREATH AWARENESS, WHILE THE CONTROL GROUP HAD A SINGLE CONTROL SESSION. THE TWO EXPERIMENTAL SESSIONS, ONE WITH EACH TYPE OF BREATHING, AND THE CONTROL SESSION CONSISTED OF PRE- (5 MIN.), DURING (18 MIN.), AND POST-SESSION EPOCHS (5 MIN.). ASSESSMENTS WERE MADE IN THE PRE- AND POST-SESSION EPOCHS USING A MULTI-OPERATIONAL APPARATUS FOR REACTION TIME. FOLLOWING 18 MIN. OF BHASTRIKA PRANAYAMA THERE WAS A STATISTICALLY SIGNIFICANT REDUCTION IN NUMBER OF ANTICIPATORY RESPONSES COMPARED TO BEFORE THE PRACTICE. THIS SUGGESTS THAT THE IMMEDIATE EFFECT OF BHASTRIKA PRANAYAMA IS TO INHIBIT UNNECESSARY RESPONDING TO STIMULI.	2013	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
8 1508  20 IS MAN ABLE TO BREATHE ONCE A MINUTE FOR AN HOUR?: THE EFFECT OF YOGA RESPIRATION ON BLOOD GASES. THE VENTILATORY RESPONSE TO HYPERCAPNIA AND ARTERIAL BLOOD GASES DURING UJJAI RESPIRATION OF ONCE PER MINUTE FOR AN HOUR WERE DETERMINED IN A PROFESSIONAL HATHA YOGI. THE RESULTS SUGGEST THAT LOWER CHEMOSENSITIVITY TO HYPERCAPNIA IN YOGA PRACTITIONERS MAY BE DUE TO AN ADAPTATION TO LOW ARTERIAL PH AND HIGH PACO2 FOR LONG PERIODS.	2002	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
9 1317  29 HEART RATE VARIABILITY CHANGES DURING HIGH FREQUENCY YOGA BREATHING AND BREATH AWARENESS. BACKGROUND: PRE AND POST COMPARISON AFTER ONE MINUTE OF HIGH FREQUENCY YOGA BREATHING (HFYB) SUGGESTED THAT THE HFYB MODIFIES THE AUTONOMIC STATUS BY INCREASING SYMPATHETIC MODULATION, BUT ITS EFFECT DURING THE PRACTICE WAS NOT ASSESSED. METHODS: THIRTY-EIGHT MALE VOLUNTEERS WITH GROUP AVERAGE AGE +/- S.D., 23.3 +/- 4.4 YEARS WERE EACH ASSESSED ON TWO SEPARATE DAYS IN TWO SESSIONS, (I) HFYB AND (II) BREATH AWARENESS. EACH SESSION WAS FOR 35 MINUTES, WITH 3 PERIODS, I.E., PRE (5 MINUTES), DURING HFYB OR BREATH AWARENESS (15 MINUTES) AND POST (5 MINUTES). RESULTS: THERE WAS A SIGNIFICANT DECREASE IN NN50, PNN50 AND THE MEAN RR INTERVAL DURING AND AFTER HFYB AND AFTER BREATH AWARENESS, COMPARED TO THE RESPECTIVE 'PRE' VALUES (P < 0.05) (REPEATED MEASURES ANOVA FOLLOWED BY POST-HOC ANALYSIS). THE LF POWER INCREASED AND HF POWER DECREASED DURING AND AFTER BREATH AWARENESS AND LF/HF RATIO INCREASED AFTER BREATH AWARENESS (P < 0.05). CONCLUSION: THE RESULTS SUGGEST THAT THERE WAS REDUCED PARASYMPATHETIC MODULATION DURING AND AFTER HFYB AND INCREASED SYMPATHETIC MODULATION WITH REDUCED PARASYMPATHETIC MODULATION DURING AND AFTER BREATH AWARENESS.	2011	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
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	2008	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
11  751  20 EFFECT OF SHORT TERM YOGA PRACTICE ON VENTILATORY FUNCTION TESTS. TWENTYFIVE NORMAL MALE VOLUNTEERS UNDERGOING A TEN WEEKS COURSE IN THE PRACTICE OF YOGA HAVE BEEN STUDIED BY SOME PARAMETERS OF VENTILATORY FUNCTIONS TESTS. THE OBSERVATIONS RECORDED AT THE END OF TEN WEEKS OF THE COURSE HAVE SHOWN IMPROVED VENTILATORY FUNCTIONS IN THE FORM OF LOWERED RESPIRATORY RATE, INCREASED FORCED VITAL CAPACITY, FEV1, MAXIMUM BREATHING CAPACITY AND BREATH HOLDING TIME, WHILE TIDAL VOLUME AND %FEV1, DID NOT REVEAL ANY SIGNIFICANT CHANGE. THUS, A COMBINED PRACTICE OF YOGA SEEMS TO BE BENEFICIAL ON RESPIRATORY EFFICIENCY.	1988	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
12 1305  24 HATHA YOGA PRACTICES: ENERGY EXPENDITURE, RESPIRATORY CHANGES AND INTENSITY OF EXERCISE. THE AIM OF THIS STUDY WAS TO CRITICALLY OBSERVE THE ENERGY EXPENDITURE, EXERCISE INTENSITY AND RESPIRATORY CHANGES DURING A FULL YOGA PRACTICE SESSION. OXYGEN CONSUMPTION ([FORMULA: SEE TEXT]), CARBON DIOXIDE OUTPUT ([FORMULA: SEE TEXT]), PULMONARY VENTILATION ([FORMULA: SEE TEXT]E), RESPIRATORY RATE (FR) AND TIDAL VOLUME (VT), WERE MEASURED IN 16 PHYSICAL POSTURE (ASANAS), FIVE YOGA BREATHING MANEUVERS (BM) AND TWO TYPES OF MEDITATION. TWENTY MALE (AGE 27.3 +/- 3.5 YEARS, HEIGHT 166.6 +/- 5.4 CM AND BODY WEIGHT 58.8 +/- 9.6 KG) YOGA INSTRUCTORS WERE STUDIED. THEIR MAXIMAL OXYGEN CONSUMPTION ([FORMULA: SEE TEXT]) WAS RECORDED. THE EXERCISE INTENSITY IN ASANAS WAS EXPRESSED IN PERCENTAGE [FORMULA: SEE TEXT] . IN ASANAS, EXERCISE INTENSITY VARIED FROM 9.9 TO 26.5% OF [FORMULA: SEE TEXT] . HIGHEST ENERGY COST WAS 3.02 KCAL MIN(-1). IN BM HIGHEST [FORMULA: SEE TEXT]E WAS 53.7 +/- 15.5 L MIN(-1). VT WAS 0.97 +/- 0.59, 1.41 +/- 1.27 AND 1.28 +/- L/BREATH WITH CORRESPONDING FR OF 14.0 +/- 5.3, 10.0 +/- 6.35, 10.0 +/- 5.8 BREATHS/MIN. AVERAGE ENERGY EXPENDITURE IN ASANAS, BM AND MEDITATION WERE 2.29, 1.91 AND 1.37 KCAL MIN(-1), RESPECTIVELY. METABOLIC RATE WAS GENERALLY IN THE RANGE OF 1-2 METABOLIC EQUIVALENTS (MET) EXCEPT IN THREE ASANAS WHERE IT WAS >2 MET. [FORMULA: SEE TEXT] WAS 0.27 +/- 0.05 AND 0.24 +/- 0.04 L MIN(-1) IN MEDITATION AND SHAVASANA, RESPECTIVELY. ALTHOUGH YOGIC PRACTICES ARE LOW INTENSITY EXERCISES WITHIN LACTATE THRESHOLD, PHYSICAL PERFORMANCE IMPROVEMENT IS POSSIBLE OWING TO BOTH BETTER ECONOMY OF BREATHING BY BM AND ALSO BY IMPROVEMENT IN CARDIOVASCULAR RESERVE. OTHER FACTORS SUCH AS PSYCHO-PHYSIOLOGICAL AND BETTER RELAXATION MAY CONTRIBUTE TO IT.	2011	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
13  985  36 EFFECTS OF HATHA YOGA AND OMKAR MEDITATION ON CARDIORESPIRATORY PERFORMANCE, PSYCHOLOGIC PROFILE, AND MELATONIN SECRETION. OBJECTIVES: TO EVALUATE EFFECTS OF HATHA YOGA AND OMKAR MEDITATION ON CARDIORESPIRATORY PERFORMANCE, PSYCHOLOGIC PROFILE, AND MELATONIN SECRETION. SUBJECTS AND METHODS: THIRTY HEALTHY MEN IN THE AGE GROUP OF 25-35 YEARS VOLUNTEERED FOR THE STUDY. THEY WERE RANDOMLY DIVIDED IN TWO GROUPS OF 15 EACH. GROUP 1 SUBJECTS SERVED AS CONTROLS AND PERFORMED BODY FLEXIBILITY EXERCISES FOR 40 MINUTES AND SLOW RUNNING FOR 20 MINUTES DURING MORNING HOURS AND PLAYED GAMES FOR 60 MINUTES DURING EVENING HOURS DAILY FOR 3 MONTHS. GROUP 2 SUBJECTS PRACTICED SELECTED YOGIC ASANAS (POSTURES) FOR 45 MINUTES AND PRANAYAMA FOR 15 MINUTES DURING THE MORNING, WHEREAS DURING THE EVENING HOURS THESE SUBJECTS PERFORMED PREPARATORY YOGIC POSTURES FOR 15 MINUTES, PRANAYAMA FOR 15 MINUTES, AND MEDITATION FOR 30 MINUTES DAILY, FOR 3 MONTHS. ORTHOSTATIC TOLERANCE, HEART RATE, BLOOD PRESSURE, RESPIRATORY RATE, DYNAMIC LUNG FUNCTION (SUCH AS FORCED VITAL CAPACITY, FORCED EXPIRATORY VOLUME IN 1 SECOND, FORCED EXPIRATORY VOLUME PERCENTAGE, PEAK EXPIRATORY FLOW RATE, AND MAXIMUM VOLUNTARY VENTILATION), AND PSYCHOLOGIC PROFILE WERE MEASURED BEFORE AND AFTER 3 MONTHS OF YOGIC PRACTICES. SERIAL BLOOD SAMPLES WERE DRAWN AT VARIOUS TIME INTERVALS TO STUDY EFFECTS OF THESE YOGIC PRACTICES AND OMKAR MEDITATION ON MELATONIN LEVELS. RESULTS: YOGIC PRACTICES FOR 3 MONTHS RESULTED IN AN IMPROVEMENT IN CARDIORESPIRATORY PERFORMANCE AND PSYCHOLOGIC PROFILE. THE PLASMA MELATONIN ALSO SHOWED AN INCREASE AFTER THREE MONTHS OF YOGIC PRACTICES. THE SYSTOLIC BLOOD PRESSURE, DIASTOLIC BLOOD PRESSURE, MEAN ARTERIAL PRESSURE, AND ORTHOSTATIC TOLERANCE DID NOT SHOW ANY SIGNIFICANT CORRELATION WITH PLASMA MELATONIN. HOWEVER, THE MAXIMUM NIGHT TIME MELATONIN LEVELS IN YOGA GROUP SHOWED A SIGNIFICANT CORRELATION (R = 0.71, P < 0.05) WITH WELL-BEING SCORE. CONCLUSION: THESE OBSERVATIONS SUGGEST THAT YOGIC PRACTICES CAN BE USED AS PSYCHOPHYSIOLOGIC STIMULI TO INCREASE ENDOGENOUS SECRETION OF MELATONIN, WHICH, IN TURN, MIGHT BE RESPONSIBLE FOR IMPROVED SENSE OF WELL-BEING.	2004	
                                                                                                                                                            
14  411  32 BLOOD PRESSURE AND HEART RATE VARIABILITY DURING YOGA-BASED ALTERNATE NOSTRIL BREATHING PRACTICE AND BREATH AWARENESS. BACKGROUND: PREVIOUS RESEARCH HAS SHOWN A REDUCTION IN BLOOD PRESSURE (BP) IMMEDIATELY AFTER THE PRACTICE OF ALTERNATE NOSTRIL YOGA BREATHING (ANYB) IN NORMAL HEALTHY MALE VOLUNTEERS AND IN HYPERTENSIVE PATIENTS OF BOTH SEXES. THE BP DURING ANYB HAS NOT BEEN RECORDED. MATERIAL/METHODS: PARTICIPANTS WERE 26 MALE VOLUNTEERS (GROUP MEAN AGE +/-SD, 23.8+/-3.5 YEARS). WE ASSESSED (1) HEART RATE VARIABILITY, (2) NON-INVASIVE ARTERIAL BP, AND (3) RESPIRATION RATE, DURING (A) ANYB AND (B) BREATH AWARENESS (BAW) SESSIONS. EACH SESSION WAS 25 MINUTES. WE PERFORMED ASSESSMENTS AT 3 TIME POINTS: PRE (5 MINUTES), DURING (15 MINUTES; FOR ANYB OR BAW) AND POST (5 MINUTES). A NAIVE-TO-YOGA CONTROL GROUP (N=15 MALES, MEAN AGE +/-SD 26.1+/-4.0 YEARS) WERE ASSESSED WHILE SEATED QUIETLY FOR 25 MINUTES. RESULTS: DURING ANYB THERE WAS A SIGNIFICANT DECREASE (REPEATED MEASURES ANOVA) IN SYSTOLIC BP AND RESPIRATION RATE; WHILE RMSSD (THE SQUARE ROOT OF THE MEAN OF THE SUM OF SQUARES OF DIFFERENCES BETWEEN ADJACENT NN INTERVALS) AND NN50 (THE NUMBER OF INTERVAL DIFFERENCES OF SUCCESSIVE NORMAL TO NORMAL INTERVALS GREATER THAN 50 MS) SIGNIFICANTLY INCREASED. DURING BAW RESPIRATION RATE DECREASED. IN CONTRAST, RESPIRATION RATE INCREASED DURING THE CONTROL STATE. ANYB AND BAW WERE SIGNIFICANTLY DIFFERENT (2-FACTOR ANOVA) IN RMSSD AND RESPIRATION RATE. BAW AND CONTROL WERE DIFFERENT WITH RESPECT TO RESPIRATION RATE. CONCLUSIONS: THE RESULTS SUGGEST THAT VAGAL ACTIVITY INCREASED DURING AND AFTER ANYB, WHICH COULD HAVE CONTRIBUTED TO THE DECREASE IN BP AND CHANGES IN THE HRV.	2014	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
15  865  32 EFFECT OF YOGA PRACTICES ON PULMONARY FUNCTION TESTS INCLUDING TRANSFER FACTOR OF LUNG FOR CARBON MONOXIDE (TLCO) IN ASTHMA PATIENTS. PRANA IS THE ENERGY, WHEN THE SELF-ENERGIZING FORCE EMBRACES THE BODY WITH EXTENSION AND EXPANSION AND CONTROL, IT IS PRANAYAMA. IT MAY AFFECT THE MILIEU AT THE BRONCHIOLES AND THE ALVEOLI PARTICULARLY AT THE ALVEOLO-CAPILLARY MEMBRANE TO FACILITATE DIFFUSION AND TRANSPORT OF GASES. IT MAY ALSO INCREASE OXYGENATION AT TISSUE LEVEL. AIM OF OUR STUDY IS TO COMPARE PULMONARY FUNCTIONS AND DIFFUSION CAPACITY IN PATIENTS OF BRONCHIAL ASTHMA BEFORE AND AFTER YOGIC INTERVENTION OF 2 MONTHS. SIXTY STABLE ASTHMATIC-PATIENTS WERE RANDOMIZED INTO TWO GROUPS I.E GROUP 1 (YOGA TRAINING GROUP) AND GROUP 2 (CONTROL GROUP). EACH GROUP INCLUDED THIRTY PATIENTS. LUNG FUNCTIONS WERE RECORDED ON ALL PATIENTS AT BASELINE, AND THEN AFTER TWO MONTHS. GROUP 1 SUBJECTS SHOWED A STATISTICALLY SIGNIFICANT IMPROVEMENT (P<0.001) IN TRANSFER FACTOR OF THE LUNG FOR CARBON MONOXIDE (TLCO), FORCED VITAL CAPACITY (FVC), FORCED EXPIRATORY VOLUME IN 1ST SEC (FEV1), PEAK EXPIRATORY FLOW RATE (PEFR), MAXIMUM VOLUNTARY VENTILATION (MVV) AND SLOW VITAL CAPACITY (SVC) AFTER YOGA PRACTICE. QUALITY OF LIFE ALSO INCREASED SIGNIFICANTLY. IT WAS CONCLUDED THAT PRANAYAMA & YOGA BREATHING AND STRETCHING POSTURES ARE USED TO INCREASE RESPIRATORY STAMINA, RELAX THE CHEST MUSCLES, EXPAND THE LUNGS, RAISE ENERGY LEVELS, AND CALM THE BODY.	2012	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
16  741  32 EFFECT OF REGULAR YOGA PRACTICE ON RESPIRATORY REGULATION AND EXERCISE PERFORMANCE. YOGA ALTERS SPONTANEOUS RESPIRATORY REGULATION AND REDUCES HYPOXIC AND HYPERCAPNIC VENTILATORY RESPONSES. SINCE A LOWER VENTILATORY RESPONSE IS ASSOCIATED WITH AN IMPROVED ENDURANCE CAPACITY DURING WHOLE-BODY EXERCISE, WE TESTED WHETHER YOGIC SUBJECTS (YOGA) SHOW AN INCREASED ENDURANCE CAPACITY COMPARED TO MATCHED NON-YOGIC INDIVIDUALS (CON) WITH SIMILAR PHYSICAL ACTIVITY LEVELS. RESTING VENTILATION, THE VENTILATORY RESPONSE TO HYPERCAPNIA, PASSIVE LEG MOVEMENT AND EXERCISE, AS WELL AS ENDURANCE PERFORMANCE WERE ASSESSED. YOGA (N = 9), COMPARED TO CONTROL (N = 6), HAD A HIGHER TIDAL VOLUME AT REST (0.7+/-0.2 VS. 0.5+/-0.1 L, P = 0.034) AND A REDUCED VENTILATORY RESPONSE TO HYPERCAPNIA (33+/-15 VS. 47+/-15 L.MIN(-1), P = 0.048). A YOGA SUBGROUP (N = 6) WITH MAXIMAL PERFORMANCE SIMILAR TO CONTROL SHOWED A BLUNTED VENTILATORY RESPONSE TO PASSIVE CYCLING (11+/-2 VS. 14+/-2 L.MIN(-1), P = 0.039) AND A TENDENCY TOWARDS LOWER EXERCISE VENTILATION (33+/-2 VS. 36+/-3 L.MIN(-1), P = 0.094) WHILE CYCLING ENDURANCE (YOGA: 17.3+/-3.3; CON: 19.6+/-8.5 MIN, P = 0.276) DID NOT DIFFER. THUS, YOGA PRACTICE WAS NOT ASSOCIATED WITH IMPROVED EXERCISE CAPACITY NOR WITH SIGNIFICANT CHANGES IN EXERCISE VENTILATION DESPITE A SIGNIFICANTLY DIFFERENT RESPIRATORY REGULATION AT REST AND IN RESPONSE TO HYPERCAPNIA AND PASSIVE LEG MOVEMENT.	2016	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
17 2823  29 YOGA VERSUS AEROBIC ACTIVITY: EFFECTS ON SPIROMETRY RESULTS AND MAXIMAL INSPIRATORY PRESSURE. OBJECTIVE: TO CLARIFY WHETHER, IN HEALTHY INDIVIDUALS, PRACTICING YOGA CAN MODIFY MAXIMAL INSPIRATORY PRESSURE AND SPIROMETRIC INDICES WHEN COMPARED WITH THE PRACTICE OF AEROBIC EXERCISE. MEYHODS: A CONTROLLED CLINICAL TRIAL. A TOTAL OF 31 HEALTHY VOLUNTEERS WERE ALLOCATED TO PRACTICE AEROBIC EXERCISE (N = 15) OR TO PRACTICE YOGA (N = 16). THOSE IN THE FIRST GROUP SERVED AS CONTROLS AND ENGAGED IN AEROBIC EXERCISE FOR 45-60 MINUTES, TWICE A WEEK FOR THREE MONTHS. THOSE IN THE SECOND GROUP PRACTICED SELECTED YOGIC TECHNIQUES, ALSO IN SESSIONS OF 45-60 MINUTES, TWICE A WEEK FOR THREE MONTHS. FORCED VITAL CAPACITY, FORCED EXPIRATORY VOLUME IN ONE SECOND AND MAXIMAL INSPIRATORY PRESSURE WERE MEASURED BEFORE AND AFTER THE THREE MONTHS OF TRAINING. RESULTS: NO SIGNIFICANT ALTERATIONS WERE SEEN IN THE SPIROMETRIC INDICES. A SLIGHT, ALTHOUGH NOT SIGNIFICANT, IMPROVEMENT IN MAXIMAL INSPIRATORY PRESSURE WAS SEEN IN BOTH GROUPS. HOWEVER, THERE WAS A SIGNIFICANT DIFFERENCE, SEEN IN BOTH GENDERS, BETWEEN THE ABSOLUTE DELTA (FINAL VALUE MINUS BASELINE VALUE) OF MAXIMAL INSPIRATORY PRESSURE FOR THE GROUP PRACTICING YOGA AND THAT OBTAINED FOR THE GROUP ENGAGING IN AEROBIC EXERCISE (MALES: 19.5 CM H2O VERSUS 2.8 CM H2O, P = 0.05; FEMALES: 20 CM H2O VERSUS 3.9 CM H2O, P = 0.01). CONCLUSION: NEITHER YOGA NOR AEROBIC EXERCISE PROVIDED A STATISTICALLY SIGNIFICANT IMPROVEMENT IN MAXIMAL INSPIRATORY PRESSURE AFTER THREE MONTHS. HOWEVER, THE ABSOLUTE VARIATION IN MAXIMAL INSPIRATORY PRESSURE WAS GREATER AMONG THOSE PRACTICING YOGA.	2006	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
18  214  27 A STUDY OF THE EFFECT OF YOGA TRAINING ON PULMONARY FUNCTIONS IN PATIENTS WITH BRONCHIAL ASTHMA. THE ROLE OF YOGA BREATHING EXERCISES, AS AN ADJUNCT TREATMENT FOR BRONCHIAL ASTHMA IS WELL RECOGNIZED. ONE HUNDRED TWENTY PATIENTS OF ASTHMA WERE RANDOMIZED INTO TWO GROUPS I.E GROUP A (YOGA TRAINING GROUP) AND GROUP B (CONTROL GROUP). EACH GROUP INCLUDED SIXTY PATIENTS. PULMONARY FUNCTION TESTS WERE PERFORMED ON ALL THE PATIENTS AT BASELINE, AFTER 4 WEEKS AND THEN AFTER 8 WEEKS. MAJORITY OF THE SUBJECTS IN THE TWO GROUPS HAD MILD DISEASE (34 PATIENTS IN GROUP A AND 32 IN GROUP B). GROUP A SUBJECTS SHOWED A STATISTICALLY SIGNIFICANT INCREASING TREND (P < 0.01) IN % PREDICTED PEAK EXPIRATORY FLOW RATE (PEFR), FORCED EXPIRATORY VOLUME IN THE FIRST SECOND (FEV1), FORCED VITAL CAPACITY (FVC), FORCED MID EXPIRATORY FLOW IN 0.25-0.75 SECONDS (FEF25-75) AND FEV1/FVC% RATIO AT 4 WEEKS AND 8 WEEKS AS COMPARED TO GROUP B. THUS, YOGA BREATHING EXERCISES USED ADJUNCTIVELY WITH STANDARD PHARMACOLOGICAL TREATMENT SIGNIFICANTLY IMPROVES PULMONARY FUNCTIONS IN PATIENTS WITH BRONCHIAL ASTHMA.	2009	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
19 2775  35 YOGA RESPIRATORY TRAINING IMPROVES RESPIRATORY FUNCTION AND CARDIAC SYMPATHOVAGAL BALANCE IN ELDERLY SUBJECTS: A RANDOMISED CONTROLLED TRIAL. OBJECTIVES: SINCE AGEING IS ASSOCIATED WITH A DECLINE IN PULMONARY FUNCTION, HEART RATE VARIABILITY AND SPONTANEOUS BAROREFLEX, AND RECENT STUDIES SUGGEST THAT YOGA RESPIRATORY EXERCISES MAY IMPROVE RESPIRATORY AND CARDIOVASCULAR FUNCTION, WE HYPOTHESISED THAT YOGA RESPIRATORY TRAINING MAY IMPROVE RESPIRATORY FUNCTION AND CARDIAC AUTONOMIC MODULATION IN HEALTHY ELDERLY SUBJECTS. DESIGN: 76 HEALTHY ELDERLY SUBJECTS WERE ENROLLED IN A RANDOMISED CONTROL TRIAL IN BRAZIL AND 29 COMPLETED THE STUDY (AGE 68 +/- 6 YEARS, 34% MALES, BODY MASS INDEX 25 +/- 3 KG/M(2)). SUBJECTS WERE RANDOMISED INTO A 4-MONTH TRAINING PROGRAM (2 CLASSES/WEEK PLUS HOME EXERCISES) OF EITHER STRETCHING (CONTROL, N=14) OR RESPIRATORY EXERCISES (YOGA, N=15). YOGA RESPIRATORY EXERCISES (BHASTRIKA) CONSISTED OF RAPID FORCED EXPIRATIONS FOLLOWED BY INSPIRATION THROUGH THE RIGHT NOSTRIL, INSPIRATORY APNOEA WITH GENERATION OF INTRATHORACIC NEGATIVE PRESSURE, AND EXPIRATION THROUGH THE LEFT NOSTRIL. PULMONARY FUNCTION, MAXIMUM EXPIRATORY AND INSPIRATORY PRESSURES (PE(MAX) AND PI(MAX), RESPECTIVELY), HEART RATE VARIABILITY AND BLOOD PRESSURE VARIABILITY FOR SPONTANEOUS BAROREFLEX DETERMINATION WERE DETERMINED AT BASELINE AND AFTER 4 MONTHS. RESULTS: SUBJECTS IN BOTH GROUPS HAD SIMILAR DEMOGRAPHIC PARAMETERS. PHYSIOLOGICAL VARIABLES DID NOT CHANGE AFTER 4 MONTHS IN THE CONTROL GROUP. HOWEVER, IN THE YOGA GROUP, THERE WERE SIGNIFICANT INCREASES IN PE(MAX) (34%, P<0.0001) AND PI(MAX) (26%, P<0.0001) AND A SIGNIFICANT DECREASE IN THE LOW FREQUENCY COMPONENT (A MARKER OF CARDIAC SYMPATHETIC MODULATION) AND LOW FREQUENCY/HIGH FREQUENCY RATIO (MARKER OF SYMPATHOVAGAL BALANCE) OF HEART RATE VARIABILITY (40%, P<0.001). SPONTANEOUS BAROREFLEX DID NOT CHANGE, AND QUALITY OF LIFE ONLY MARGINALLY INCREASED IN THE YOGA GROUP. CONCLUSION: RESPIRATORY YOGA TRAINING MAY BE BENEFICIAL FOR THE ELDERLY HEALTHY POPULATION BY IMPROVING RESPIRATORY FUNCTION AND SYMPATHOVAGAL BALANCE. TRIAL REGISTRATION CINICALTRIALS.GOV IDENTIFIER: NCT00969345; TRIAL REGISTRY NAME: EFFECTS OF RESPIRATORY YOGA TRAINING (BHASTRIKA) ON HEART RATE VARIABILITY AND BAROREFLEX, AND QUALITY OF LIFE OF HEALTHY ELDERLY SUBJECTS.	2011	

20 2511  37 YOGA BREATHING THROUGH A PARTICULAR NOSTRIL IS ASSOCIATED WITH CONTRALATERAL EVENT-RELATED POTENTIAL CHANGES. BACKGROUND: IN EARLIER STUDIES UNINOSTRIL YOGA BREATHING WAS SHOWN TO INFLUENCE THE ACTIVITY OF THE CEREBRAL HEMISPHERES DIFFERENTLY, BASED ON (I) AUDITORY EVOKED POTENTIALS RECORDED FROM BILATERAL SCALP SITES, AND (II) PERFORMANCE IN HEMISPHERE-SPECIFIC TASKS. BUT CHANGE IN P300 (EVENT-RELATED POTENTIAL GENERATED WHEN SUBJECTS ATTEND TO AND DISCRIMINATE BETWEEN STIMULI) FROM BILATERAL SCALP SITES WHEN SUBJECTS WERE PRACTICING UNI- AND ALTERNATE-NOSTRIL BREATHING ARE YET TO BE EXPLORED. AIM: THE PRESENT STUDY WAS DESIGNED TO DETERMINE WHETHER OR NOT IMMEDIATELY AFTER UNINOSTRIL OR ALTERNATE NOSTRIL YOGA BREATHING THERE WOULD BE A CHANGE IN THE ABILITY TO PAY ATTENTION TO A GIVEN STIMULUS. MATERIALS AND METHODS: TWENTY-NINE HEALTHY MALE VOLUNTEERS, WITH AGES BETWEEN 20 AND 45 YEARS WERE RANDOMLY ALLOCATED TO FIVE SESSIONS, VIZ., (I) RIGHT-, (II) LEFT-, (III) ALTERNATE-NOSTRIL YOGA BREATHING, (IV) BREATH AWARENESS AND (V) NO INTERVENTION, EACH FOR 45 MIN ON SEPARATE DAYS. THE P300 EVENT RELATED POTENTIAL WAS RECORDED USING AN AUDITORY ODDBALL PARADIGM FROM SITES ON THE LEFT (C3) AND RIGHT (C4), REFERENCED TO LINKED EARLOBES, BEFORE AND AFTER EACH SESSION. RESULTS: POST-HOC ANALYSIS WITH BONFERRONI ADJUSTMENT SHOWED THAT THE P300 PEAK LATENCY WAS SIGNIFICANTLY LOWER AT C3 COMPARED TO THAT AT C4, FOLLOWING RIGHT NOSTRIL YOGA BREATHING (P<0.05). CONCLUSION: THESE RESULTS SUGGEST THAT RIGHT NOSTRIL YOGA BREATHING FACILITATES THE ACTIVITY OF CONTRALATERAL (LEFT) HEMISPHERE, IN THE PERFORMANCE OF THE P300 TASK.	2012