1 1695 129 P300 FOLLOWING FOUR VOLUNTARILY REGULATED YOGA BREATHING PRACTICES AND BREATH AWARENESS. ATTENTION WAS INFLUENCED BY YOGA BREATHING IN PREVIOUSLY PUBLISHED RESEARCH. EACH YOGA BREATHING PRACTICE UNIQUELY MODIFIES SPECIFIC BREATH CHARACTERISTICS. DIFFERENCES IN THE STUDY DESIGNS, ASSESSMENT METHODS AND INTERVENTIONS RESULTED IN DIFFICULTY IN COMPARING EFFECTS BETWEEN YOGA BREATHING PRACTICES. THIS STUDY AIMED (I) TO COMPARE FOUR YOGA BREATHING PRACTICES ON ATTENTION USING AN AUDITORY ODDBALL TASK AND (II) TO DETERMINE CARDIAC AUTONOMIC ACTIVITY ASSOCIATED WITH ATTENTION USING HEART RATE VARIABILITY. P300 EVENT RELATED POTENTIAL WAS RECORDED SIMULTANEOUSLY WITH HEART RATE VARIABILITY BEFORE AND AFTER 18-MINUTE PERIODS EACH OF (I) HIGH FREQUENCY YOGA BREATHING (WITH INCREASED BREATH FREQUENCY), (II) BELLOWS YOGA BREATHING (WITH INCREASED DEPTH OF RESPIRATION), (III) ALTERNATE NOSTRIL YOGA BREATHING (WITH ALTERNATE NOSTRIL PATENCY), (IV) BUMBLEBEE YOGA BREATHING (WITH PROLONGED EXHALE), (V) BREATH AWARENESS (WITH ATTENTION TO THE BREATH) AND (VI) QUIET SEATED REST AS CONTROL IN 38 YOGA EXPERIENCED MALES (AVERAGE AGE +/- SD; 24.08 +/- 4.01 YEARS). THE SIX SESSIONS WERE ON SEPARATE, RANDOMLY ALLOCATED DAYS. THE P300 PEAK AMPLITUDE RECORDED AT PZ WAS SIGNIFICANTLY INCREASED AFTER FOUR YOGA BREATHING PRACTICES (BONFERRONI ADJUSTED POST-HOC TESTS, REPEATED MEASURES ANOVA). NO SIGNIFICANT CHANGES WERE NOTED IN HEART RATE VARIABILITY FOLLOWING YOGA BREATHING OR CONTROL SESSIONS. THESE FINDINGS SUGGEST THAT THE FOUR YOGA BREATHING PRACTICES INCREASE THE ATTENTIONAL NEURAL RESOURCES ENGAGED FOR THIS AUDITORY ODDBALL TASK, IRRESPECTIVE OF THE CHARACTERISTIC OF BREATH UNIQUELY REGULATED IN THE FOUR YOGA BREATHING PRACTICES. 2022 2 2362 59 VOLITIONAL YOGA BREATHING INFLUENCES ATTENTION AND ANXIETY: AN EXPLORATORY RANDOMIZED CROSSOVER STUDY. BACKGROUND: PREVIOUS STUDIES ASSESSED YOGA BREATHING PRACTICES INDIVIDUALLY. THIS EXPLORATORY, RANDOMIZED CROSSOVER STUDY ASSESSED ATTENTION AND ANXIETY FOLLOWING FOUR YOGA BREATHING PRACTICES, BREATH AWARENESS, AND QUIET SEATED REST. MATERIALS AND METHODS: THIRTY-EIGHT MALE VOLUNTEERS BETWEEN 20 AND 37 YEARS (GROUP MEAN AGE +/- SD; 24.08 +/- 4.01 YEARS) WERE ASSESSED IN SIX SESSIONS IN RANDOM ORDER (WWW.RANDOMIZER.ORG) ON SEPARATE DAYS. THE SESSIONS WERE: (I) ALTERNATE NOSTRIL YOGA BREATHING, (II) BELLOWS YOGA BREATHING, (III) BUMBLEBEE YOGA BREATHING, (IV) HIGH-FREQUENCY YOGA BREATHING, (V) BREATH AWARENESS, AND (VI) QUIET SEATED REST. THE SESSIONS WERE FOR 18 MIN EACH. SIX LETTER CANCELLATION TEST (SLCT) AND SPIELBERGER'S STATE TRAIT ANXIETY INVENTORY-STATE (STAI-S) WERE ADMINISTERED PRE AND POST EACH SESSION. DATA ANALYSIS USED GENERAL LINEAR MIXED MODEL ANALYSIS, WITH FIXED EFFECT OF STATES (PRE AND POST) AND SESSIONS. RESULTS: A SIGNIFICANT MAIN EFFECT OF STATES WAS OBSERVED ON TOTAL ATTEMPTED (F1,407 = 5.374, P = 0.021) AND NET ATTEMPTED SCORES (F1,407 = 6.178, P = 0.013) OF THE SLCT, WITH A SIGNIFICANT INCREASE IN SCORES FOLLOWING HIGH-FREQUENCY YOGA BREATHING (PADJ = 0.031 FOR TOTAL ATTEMPTED SCORES; PADJ = 0.029 FOR NET ATTEMPTED SCORES). ALSO, A SIGNIFICANT MAIN EFFECT OF STATES ON STAI-S SCORES WAS OBSERVED (F1,407 = 33.979, P < 0.001), WITH A SIGNIFICANT DECREASE IN SCORES FOLLOWING ALTERNATE NOSTRIL YOGA BREATHING (PADJ = 0.001), BELLOWS YOGA BREATHING (PADJ = 0.008), BUMBLEBEE YOGA BREATHING (PADJ = 0.002), AND HIGH-FREQUENCY YOGA BREATHING (PADJ = 0.042) COMPARED TO THE CORRESPONDING PRE STATE. THERE WAS A SIGNIFICANT MAIN EFFECT OF SESSIONS (F5,407 = 3.043, P = 0.010) ON STAI-S SCORES, WITH SCORES POST ALTERNATE NOSTRIL YOGA BREATHING SIGNIFICANTLY LOWER THAN POST BREATH AWARENESS (PADJ = 0.037). CONCLUSION: FOLLOWING HIGH-FREQUENCY YOGA BREATHING SUSTAINED ATTENTION WAS BETTER THAN BEFORE WHILE STATE ANXIETY DECREASED IN POST-PRE COMPARISONS OF ALTERNATE NOSTRIL YOGA BREATHING, BELLOWS YOGA BREATHING, BUMBLEBEE YOGA BREATHING, AND HIGH-FREQUENCY YOGA BREATHING. THE DIFFERENCES BETWEEN BREATHING PRACTICES MAY BE DUE TO DIFFERENCES IN DEGREE OF VOLITIONAL REGULATION OF BREATHING AND IN THE BREATH PATTERNS MODIFIED VOLITIONALLY. THE GENERALIZABILITY OF THE FINDINGS WAS LIMITED BY INCLUDING AN ALL MALE, YOGA EXPERIENCED SAMPLE. FUTURE RESEARCH SHOULD INCLUDE PARTICIPANTS OF BOTH GENDERS AND COULD INCLUDE DIFFERENT LEVELS OF YOGA EXPERIENCE, WITH ASSESSMENTS INCLUDING OBJECTIVE MEASURES OF ATTENTION AND ANXIETY. 2022 3 396 19 BETWEEN INHALE AND EXHALE: YOGA AS AN INTERVENTION IN SMOKING CESSATION. THE CURRENT STUDY PROVIDED A REVIEW OF EVIDENCE-BASED YOGA INTERVENTIONS' IMPACT ON SMOKING CESSATION. THE RESEARCHERS REVIEWED ARTICLES OBTAINED FROM MEDLINE (PUBMED), EBSCOHOST, PROQUEST, MEDINDIA, CINAHL, ALT HEALTHWATCH, AND AMED DATABASES. INCLUSION CRITERIA WERE AS FOLLOWS: (A) STUDY PUBLISHED BETWEEN 2004 AND 2013, (B) STUDY PUBLISHED IN ENGLISH LANGUAGE, (C) STUDY USED YOGA-BASED INTERVENTIONS, (D) STUDY INVOLVED SMOKERS WITH VARYING LEVEL OF SMOKING, (E) STUDY USED ANY QUANTITATIVE DESIGN, AND (F) STUDY HAD PHYSIOLOGICAL AND/OR PSYCHOLOGICAL OUTCOMES. A TOTAL OF 10 STUDIES MET THE INCLUSION CRITERIA. DESIGNS WERE 2 PRE-POST TESTS AND 8 RANDOMIZED CONTROLLED TRIALS. MAJORITY OF THE INTERVENTIONS WERE ABLE TO ENHANCE QUITTING SMOKING RATES IN THE PARTICIPANTS UNDER STUDY. YOGA-BASED INTERVENTIONS HOLD PROMISE FOR SMOKING CESSATION. SOME OF THE LIMITATIONS INCLUDE SHORT FOLLOW-UP MEASUREMENTS AND SHORT DURATION OF INTERVENTION. 2014 4 1896 31 RESPIRATORY, PHYSICAL, AND PSYCHOLOGICAL BENEFITS OF BREATH-FOCUSED YOGA FOR ADULTS WITH SEVERE TRAUMATIC BRAIN INJURY (TBI): A BRIEF PILOT STUDY REPORT. OBJECTIVE: THIS PILOT STUDY WAS DESIGNED TO IDENTIFY THE POTENTIAL BENEFITS OF BREATH-FOCUSED YOGA ON RESPIRATORY, PHYSICAL, AND PSYCHOLOGICAL FUNCTIONING FOR ADULTS WITH SEVERE TRAUMATIC BRAIN INJURY (TBI). PARTICIPANTS: TEN INDIVIDUALS WITH SEVERE TBI WHO SELF-SELECTED TO ATTEND WEEKLY YOGA CLASSES AND 4 NO-TREATMENT CONTROLS WERE EVALUATED. METHODS: PARTICIPANTS WERE ASSESSED AT PRETREATMENT BASELINE AND AT 3-MONTH INTERVALS FOR A TOTAL OF 4 TIME POINTS OVER 40 WEEKS. OUTCOMES OF INTEREST INCLUDED OBSERVED EXHALE STRENGTH, ABILITY TO HOLD A BREATH OR A TONE, BREATHING RATE, COUNTED BREATHS (INHALE AND EXHALE), AND HEART RATE, AS WELL AS SELF-REPORTED PHYSICAL AND PSYCHO-LOGICAL WELL-BEING. RESULTS: REPEATED WITHIN-GROUP ANALYSES OF VARIANCE REVEALED THAT THE YOGA GROUP DEMONSTRATED SIGNIFICANT LONGITUDINAL CHANGE ON SEVERAL MEASURES OF OBSERVED RESPIRATORY FUNCTIONING AND SELF-REPORTED PHYSICAL AND PSYCHOLOGICAL WELL-BEING OVER A 40-WEEK PERIOD. THOSE IN THE CONTROL GROUP SHOWED MARGINAL IMPROVEMENT ON 2 OF THE 6 MEASURES OF RESPIRATORY HEALTH, PHYSICAL AND SOCIAL FUNCTIONING, EMOTIONAL WELL-BEING, AND GENERAL HEALTH. THE SMALL SAMPLE SIZES PRECLUDED THE ANALYSIS OF BETWEEN GROUP DIFFERENCES. CONCLUSION: THIS STUDY PROVIDES PRELIMINARY EVIDENCE THAT BREATH-FOCUSED YOGA MAY IMPROVE RESPIRATORY FUNCTIONING AND SELF-PERCEIVED PHYSICAL AND PSYCHOLOGICAL WELL-BEING OF ADULTS WITH SEVERE TBI. 2012 5 457 37 CHANGES IN P300 FOLLOWING ALTERNATE NOSTRIL YOGA BREATHING AND BREATH AWARENESS. THIS STUDY ASSESSED THE EFFECT OF ALTERNATE NOSTRIL YOGA BREATHING (NADISUDDHI PRANAYAMA) ON P300 AUDITORY EVOKED POTENTIALS COMPARED TO A SESSION OF BREATH AWARENESS OF EQUAL DURATION, IN 20 MALE ADULT VOLUNTEERS WHO HAD AN EXPERIENCE OF YOGA BREATHING PRACTICES FOR MORE THAN THREE MONTHS. PEAK AMPLITUDES AND PEAK LATENCIES OF THE P300 WERE ASSESSED BEFORE AND AFTER THE RESPECTIVE SESSIONS. THERE WAS A SIGNIFICANT INCREASE IN THE P300 PEAK AMPLITUDES AT FZ, CZ, AND PZ AND A SIGNIFICANT DECREASE IN THE PEAK LATENCY AT FZ ALONE FOLLOWING ALTERNATE NOSTRIL YOGA BREATHING. FOLLOWING BREATH AWARENESS THERE WAS A SIGNIFICANT INCREASE IN THE PEAK AMPLITUDE OF P300 AT CZ. THIS SUGGESTS THAT ALTERNATE NOSTRIL YOGA BREATHING POSITIVELY INFLUENCES COGNITIVE PROCESSES WHICH ARE REQUIRED FOR SUSTAINED ATTENTION AT DIFFERENT SCALP SITES (FRONTAL, VERTEX AND PARIETAL), WHEREAS BREATH AWARENESS BRINGS ABOUT CHANGES AT THE VERTEX ALONE. 2013 6 2511 61 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 7 1321 39 HEMISPHERE SPECIFIC EEG RELATED TO ALTERNATE NOSTRIL YOGA BREATHING. BACKGROUND: PREVIOUSLY, FORCED UNILATERAL NOSTRIL BREATHING WAS ASSOCIATED WITH IPSILATERAL, OR CONTRALATERAL CEREBRAL HEMISPHERE CHANGES, OR NO CHANGE. HENCE IT WAS INCONCLUSIVE. THE PRESENT STUDY WAS CONDUCTED ON 13 NORMAL HEALTHY PARTICIPANTS TO DETERMINE THE EFFECTS OF ALTERNATE NOSTRIL YOGA BREATHING ON (A) CEREBRAL HEMISPHERE ASYMMETRY, AND (B) CHANGES IN THE STANDARD EEG BANDS. METHODS: PARTICIPANTS WERE RANDOMLY ALLOCATED TO THREE SESSIONS (A) ALTERNATE NOSTRIL YOGA BREATHING (ANYB), (B) BREATH AWARENESS AND (C) QUIET SITTING, ON SEPARATE DAYS. EEG WAS RECORDED FROM BILATERALLY SYMMETRICAL SITES (FP1, FP2, C3, C4, O1 AND O2). ALL SITES WERE REFERENCED TO THE IPSILATERAL EAR LOBE. RESULTS: THERE WAS NO CHANGE IN CEREBRAL HEMISPHERE SYMMETRY. THE RELATIVE POWER IN THE THETA BAND WAS DECREASED DURING ALTERNATE NOSTRIL YOGA BREATHING (ANYB) AND THE BETA AMPLITUDE WAS LOWER AFTER ANYB. DURING QUIET SITTING THE RELATIVE POWER IN THE BETA BAND INCREASED, WHILE THE AMPLITUDE OF THE ALPHA BAND REDUCED. CONCLUSION: THE RESULTS SUGGEST THAT ANYB WAS ASSOCIATED WITH GREATER CALMNESS, WHEREAS QUIET SITTING WITHOUT SPECIFIC DIRECTIONS WAS ASSOCIATED WITH AROUSAL. THE RESULTS IMPLY A POSSIBLE USE OF ANYB FOR STRESS AND ANXIETY REDUCTION. 2017 8 1909 36 RIGHT UNINOSTRIL YOGA BREATHING INFLUENCES IPSILATERAL COMPONENTS OF MIDDLE LATENCY AUDITORY EVOKED POTENTIALS. A PREVIOUS REPORT DESCRIBED SELECTIVE ELECTRICAL ACTIVITY OF THE CEREBRAL HEMISPHERES WITH UNINOSTRIL BREATHING. IN THE PRESENT STUDY, MIDDLE LATENCY AUDITORY EVOKED POTENTIALS (MLAEPS) WERE RECORDED FROM SYMMETRICAL SCALP SITES DURING THE PRACTICE OF UNINOSTRIL YOGA BREATHING. THERE WERE TWO SESSIONS (40 MIN EACH) OF RIGHT NOSTRIL YOGA BREATHING (RNB) AND OF BREATH AWARENESS (BAW), WITH (I) 'BEFORE', (II) TEST (EITHER RNB OR BAW) AND (III) 'AFTER' PERIODS. THE PARTICIPANTS WERE 14 MALE VOLUNTEERS AGED BETWEEN 18 AND 33 YEARS, AND THE SETTING WAS A YOGA CENTRE. MLAEPS WERE RECORDED FROM SYMMETRICAL SCALP SITES (C4 AND C3). DURING RNB, THE PEAK AMPLITUDES OF TWO NEGATIVE COMPONENTS (VIZ. NA WAVE AND NB WAVE) WERE SIGNIFICANTLY INCREASED ON THE RIGHT SIDE. INCREASED PEAK AMPLITUDES OF NA AND NB WAVES SUGGESTED THAT RNB INCREASED THE NUMBER OF NEURONS RECRUITED ON THE RIGHT SIDE, SUGGESTING A POSSIBLE APPLICATION OF RNB IN CERTAIN PSYCHIATRIC DISORDERS WITH CEREBRAL HEMISPHERIC IMBALANCE. 2004 9 72 42 A FUNCTIONAL NEAR-INFRARED SPECTROSCOPY STUDY OF HIGH-FREQUENCY YOGA BREATHING COMPARED TO BREATH AWARENESS. BACKGROUND HIGH-FREQUENCY YOGA BREATHING (BREATH RATE OF 2.0 HZ) HAS BEEN ASSOCIATED WITH CHANGES IN OXY-HEMOGLOBIN IN THE PREFRONTAL REGION OF THE BRAIN. THE PRESENT STUDY ASSESSED THE EFFECTS OF HIGH-FREQUENCY YOGA BREATHING (HFYB) AT 1.0 HZ ON FRONTAL OXY-HEMOGLOBIN (OXY-HB) AND DEOXY-HEMOGLOBIN (DEOXY-HB). MATERIAL AND METHODS FORTY HEALTHY MALE PARTICIPANTS WERE RECRUITED FOR THE STUDY. THE EXPERIMENTAL GROUP CONSISTED OF 20 PARTICIPANTS 23-40 YEARS OLD (GROUP MEAN +/-S.D., 26.4+/-4.7 YEARS) WITH AT LEAST 3 MONTHS OF EXPERIENCE PERFORMING HFYB (GROUP MEAN +/-S.D., 16.3+/-9.8 MONTHS). THE CONTROL GROUP CONSISTED OF 20 PARTICIPANTS AGES 23-38 YEARS (GROUP MEAN AGE +/- S.D., 27.4+/-4.1 YEARS), WHO WERE SEATED QUIETLY FOR THE SAME DURATION AND THEIR AVERAGE EXPERIENCE OF YOGA PRACTICE WAS (+/-S.D.) 4.3+/-2.7 MONTHS. EACH PARTICIPANT IN THE EXPERIMENTAL GROUP WAS ASSESSED AT 2 SESSIONS (HFYB AND BREATH AWARENESS [BAW]) ON ALTERNATE DAYS. HEMODYNAMIC CHANGES WERE ASSESSED USING A FUNCTIONAL NEAR-INFRARED SPECTROSCOPY SENSOR PLACED OVER THE FOREHEAD. DATA WERE ANALYZED USING REPEATED-MEASURES ANALYSES OF VARIANCE FOLLOWED BY POST HOC BONFERRONI ADJUSTMENT. RESULTS A SIGNIFICANT REDUCTION WAS OBSERVED IN OXY-HB DURING AND AFTER HFYB ON THE LEFT AND RIGHT SIDES COMPARED TO VALUES BEFORE. WE ALSO FOUND A SIGNIFICANT REDUCTION IN DEOXY-HB DURING AND AFTER THE QUIET SITTING CONTROL SESSION COMPARED TO PRE-SESSION VALUES ON LEFT AND RIGHT SIDES. CONCLUSIONS THE DECREASE IN OXY-HB DURING AND AFTER HFYB SUGGESTS THAT THERE WAS NO FRONTAL ACTIVATION DURING HFYB WHEN PRACTICED AT THE RATE OF 1.0 HZ. 2016 10 442 39 CEREBROVASCULAR DYNAMICS ASSOCIATED WITH YOGA BREATHING AND BREATH AWARENESS. AIMS: BREATH FREQUENCY CAN ALTER CEREBRAL BLOOD FLOW. THE STUDY AIMED TO DETERMINE BILATERAL MIDDLE CEREBRAL ARTERIAL HEMODYNAMICS IN HIGH-FREQUENCY YOGA BREATHING (HFYB) AND SLOW FREQUENCY ALTERNATE NOSTRIL YOGA BREATHING (ANYB) USING TRANSCRANIAL DOPPLER SONOGRAPHY. METHODS: HEALTHY MALE VOLUNTEERS WERE ASSESSED IN TWO SEPARATE TRIALS BEFORE, DURING, AND AFTER HFYB (2.0 HZ FOR 1 MIN, N = 16) AND ANYB (12 BREATHS PER MINUTE FOR 5 MIN, N = 22). HFYB AND ANYB WERE SEPARATELY COMPARED TO BREATH AWARENESS (BAW) AND TO CONTROL SESSIONS. STATISTICAL ANALYSIS: THE DATA WERE ANALYZED USING REPEATED-MEASURES ANOVA WITH BONFERRONI ADJUSTED POST HOC TESTS. RESULTS: DURING HFYB THERE WAS A DECREASE IN END-DIASTOLIC VELOCITY (EDV) AND MEAN FLOW VELOCITY (MFV) (P < 0.01 FOR LEFT AND P < 0.05 FOR RIGHT MIDDLE CEREBRAL ARTERIES; MCA) WITH AN INCREASE IN PULSATILITY INDEX (PI) FOR THE RIGHT MCA (P < 0.05). DURING ANYB, THERE WAS A BILATERAL DECREASE IN PEAK SYSTOLIC VELOCITY (P < 0.05 FOR LEFT AND P < 0.01 FOR RIGHT MCA), EDV (P < 0.01) AND MFV (P < 0.01 FOR LEFT AND P < 0.001 FOR RIGHT MCA) AND AN INCREASE IN PI (P < 0.01). DURING BAW OF THE TWO SESSIONS THERE WAS A DECREASE IN LATERALIZED FLOW AND END-DIASTOLIC VELOCITIES (P < 0.05) AND AN INCREASE IN PI (P < 0.05). CONCLUSIONS: CHANGES IN PEAK FLOW VELOCITIES AND PULSATILITY INDICES DURING AND AFTER HFYB, ANYB, AND BAW SUGGEST DECREASED CEREBROVASCULAR BLOOD FLOW AND INCREASED FLOW RESISTANCE BASED ON DIFFERENT MECHANISMS. 2022 11 458 32 CHANGES IN P300 FOLLOWING TWO YOGA-BASED RELAXATION TECHNIQUES. CYCLIC MEDITATION (CM) IS A TECHNIQUE THAT COMBINES "STIMULATING" AND "CALMING" PRACTICES, BASED ON A STATEMENT IN ANCIENT YOGA TEXTS SUGGESTING THAT SUCH A COMBINATION MAY BE ESPECIALLY HELPFUL TO REACH A STATE OF MENTAL EQUILIBRIUM. THE CHANGES IN THE PEAK LATENCY AND PEAK AMPLITUDE OF P300 AUDITORY EVENT-RELATED POTENTIALS WERE STUDIED BEFORE AND AFTER THE PRACTICE OF CYCLIC MEDITATION COMPARED TO AN EQUAL DURATION OF SUPINE REST IN 42 VOLUNTEERS (GROUP MEAN AGE +/- SD, 27 +/- 6.3 YEARS), FROM FZ, CZ, AND PZ ELECTRODE SITES REFERENCED TO LINKED EARLOBES. THE SESSIONS WERE ONE DAY APART AND THE ORDER WAS ALTERNATED. THERE WAS REDUCTION IN THE PEAK LATENCIES OF P300 AFTER CYCLIC MEDITATION AT FZ, CZ, AND PZ COMPARED TO THE "PRE" VALUES. A SIMILAR TREND OF REDUCTION IN P300 PEAK LATENCIES AT FZ, CZ, AND PZ WAS ALSO OBSERVED AFTER SUPINE REST, COMPARED TO THE RESPECTIVE "PRE" VALUES, ALTHOUGH THE MAGNITUDE OF CHANGE IN EACH CASE WAS LESS AFTER SUPINE REST COMPARED TO AFTER CYCLIC MEDITATION. THE P300 PEAK AMPLITUDES AFTER CM WERE HIGHER AT FZ, CZ, AND PZ SITES COMPARED TO THE "PRE" VALUES. IN CONTRAST, NO SIGNIFICANT CHANGES WERE OBSERVED IN THE P300 PEAK AMPLITUDES AT FZ, CZ, AND PZ AFTER SUPINE REST COMPARED TO THE RESPECTIVE "PRE" STATE. THE PRESENT RESULTS SUPPORT THE IDEA THAT "CYCLIC" MEDITATION ENHANCES COGNITIVE PROCESSES UNDERLYING THE GENERATION OF THE P300. 2006 12 1726 49 PERFORMANCE IN A CORSI BLOCK-TAPPING TASK FOLLOWING HIGH-FREQUENCY YOGA BREATHING OR BREATH AWARENESS. BACKGROUND: UNINOSTRIL YOGA BREATHING PRACTICES HAVE IMPROVED SPATIAL MEMORY SCORES. THERE HAS BEEN NO ASSESSMENT ON THE EFFECT OF HIGH-FREQUENCY YOGA BREATHING (HFYB) ON WORKING MEMORY AND SPATIAL MEMORY SCORES USING THE CORSI BLOCK-TAPPING TASK (CBTT). OBJECTIVES: THE PRESENT STUDY WAS PLANNED TO ASSESS THE IMMEDIATE EFFECTS OF HFYB AND BREATH AWARENESS (BAW) COMPARED TO A CONTROL SESSION ON PERFORMANCE IN A CBTT. METHODS: FIFTEEN PARTICIPANTS OF BOTH SEXES WITH AGES BETWEEN 18 AND 24 YEARS (GROUP MEAN AGE +/- STANDARD DEVIATION, 20.0 +/- 1.6 YEARS; 10 FEMALES) WERE RECRUITED FOR THE TRIAL FROM A UNIVERSITY IN NORTH INDIA. EACH PARTICIPANT WAS ASSESSED IN THREE SESSIONS CONDUCTED ON 3 SEPARATE DAYS AT THE SAME TIME OF THE DAY. THE THREE SESSIONS WERE (I) HFYB, (II) BAW, AND (III) QUIET SITTING (QS). THE DURATION OF THE INTERVENTION WAS 18 MIN. THE PARTICIPANTS WERE ASSESSED BEFORE AND AFTER ALL THE THREE SESSIONS. REPEATED-MEASURES-ANALYSES OF VARIANCE FOLLOWED BY POST HOC TESTS WITH BONFERRONI ADJUSTMENT WERE PERFORMED TO COMPARE DATA BEFORE AND AFTER ALL THE THREE SESSIONS. RESULTS: BAW RESULTED IN AN IMPROVEMENT IN BACKWARD TOTAL SCORES (P < 0.05) AND THE BACKWARD CORSI SPAN (P < 0.05; ONE TAILED). CONCLUSIONS: THE RESULTS SUGGEST THAT BAW IMPROVES PRIMARY WORKING MEMORY, SPATIAL MEMORY, AND SPATIAL ATTENTION. HFYB DID NOT CAUSE ANY CHANGE. 2019 13 1354 26 IMMEDIATE EFFECT OF THREE YOGA BREATHING TECHNIQUES ON PERFORMANCE ON A LETTER-CANCELLATION TASK. THE EFFECTS OF THREE YOGA BREATHING PRACTICES WERE EVALUATED ON PERFORMANCE ON A LETTER-CANCELLATION TASK WHICH IS A LEFT-HEMISPHERE DOMINANT TASK. THE THREE YOGA BREATHING PRACTICES (RIGHT, LEFT, AND ALTERNATE NOSTRIL BREATHING) WERE SELECTED BECAUSE UNILATERAL FORCED NOSTRIL BREATHING STIMULATES THE CONTRALATERAL HEMISPHERE. THERE WERE 20 MALE VOLUNTEERS WHOSE AGES RANGED FROM 20 TO 45 YEARS (M AGE=28.4 YR., SD=5.7). ALL SUBJECTS WERE ASSESSED BEFORE AND AFTER FOUR SESSIONS, I.E., RIGHT NOSTRIL YOGA BREATHING, LEFT NOSTRIL YOGA BREATHING, ALTERNATE NOSTRIL YOGA BREATHING, AND BREATH AWARENESS AS A CONTROL. THE LETTER-CANCELLATION TASK SCORES WERE SIGNIFICANTLY IMPROVED, I.E., THERE WERE FEWER ERRORS FOLLOWING RIGHT AND ALTERNATE NOSTRIL YOGA BREATHING (WILCOXON PAIRED SIGNED-RANKS TEST). THE IMPROVED PERFORMANCE MAY BE RELATED TO THE ENHANCEMENT OF CONTRALATERAL HEMISPHERE FUNCTION FOUND WITH SELECTIVE NOSTRIL BREATHING. 2007 14 411 46 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 98 47 A NONRANDOMIZED NON-NAIVE COMPARATIVE STUDY OF THE EFFECTS OF KAPALABHATI AND BREATH AWARENESS ON EVENT-RELATED POTENTIALS IN TRAINED YOGA PRACTITIONERS. OBJECTIVES: THE STUDY WAS CONDUCTED TO COMPARE THE P300 EVENT-RELATED POTENTIALS RECORDED BEFORE AND AFTER (1) HIGH-FREQUENCY YOGA BREATHING (HFYB) AND (2) BREATH AWARENESS. DESIGN: THE P300 WAS RECORDED IN PARTICIPANTS OF TWO GROUPS BEFORE AND AFTER THE INTERVENTION SESSION (1 MINUTE IN DURATION). SETTINGS AND LOCATION: ALL PARTICIPANTS WERE RECEIVING YOGA TRAINING IN A RESIDENTIAL YOGA CENTER, SWAMI VIVEKANADA YOGA RESEARCH FOUNDATION IN BANGALORE, INDIA. SUBJECTS: THIRTY (30) MALE PARTICIPANTS FORMED TWO GROUPS (N = 15 EACH) WITH COMPARABLE AGES (WITHIN AN AGE RANGE OF 20-35 YEARS) AND COMPARABLE EXPERIENCE OF THE TWO TECHNIQUES, THE MINIMUM EXPERIENCE BEING 3 MONTHS. INTERVENTIONS: THE TWO GROUPS WERE EACH GIVEN A SEPARATE INTERVENTION. ONE GROUP PRACTICED A HFYB AT A FREQUENCY OF APPROXIMATELY 2.0 HZ, CALLED KAPALABHATI. THE OTHER GROUP PRACTICED BREATH AWARENESS DURING WHICH PARTICIPANTS WERE AWARE OF THEIR BREATH WHILE SEATED, RELAXED. OUTCOME MEASURES: THE P300 EVENT-RELATED POTENTIAL, WHICH IS GENERATED WHEN ATTENDING TO AND DISCRIMINATING BETWEEN AUDITORY STIMULI, WAS RECORDED BEFORE AND AFTER BOTH TECHNIQUES. RESULTS: THE P300 PEAK LATENCY DECREASED AFTER HFYB AND THE P300 PEAK AMPLITUDE INCREASED AFTER BREATH AWARENESS. CONCLUSIONS: BOTH PRACTICES (HFYB AND BREATH AWARENESS), THOUGH VERY DIFFERENT, INFLUENCED THE P300. HFYB REDUCED THE PEAK LATENCY, SUGGESTING A DECREASE IN TIME NEEDED FOR THIS TASK, WHICH REQUIRES SELECTIVE ATTENTION. BREATH AWARENESS INCREASED THE P300 PEAK AMPLITUDE, SUGGESTING AN INCREASE IN THE NEURAL RESOURCES AVAILABLE FOR THE TASK. 2009 16 1694 21 P300 AMPLITUDE AND ANTIDEPRESSANT RESPONSE TO SUDARSHAN KRIYA YOGA (SKY). BACKGROUND: THERE IS EVIDENCE THAT SUDARSHAN KRIYA YOGA (SKY) HAS SIGNIFICANT ANTIDEPRESSANT EFFECTS. OBJECTIVE: THE PRESENT STUDY EXAMINED WHETHER PRETREATMENT P300 ERP AMPLITUDE PREDICTS ANTIDEPRESSANT RESPONSE TO SKY. METHODS: CONSENTING, DRUG-FREE DEPRESSED PATIENTS (N = 30; DYSTHYMICS, 15, MELANCHOLICS, 15) WHO RECEIVED SKY AS THE SOLE TREATMENT WERE ASSESSED CLINICALLY AT PRETREATMENT, 1 MONTH AND 3 MONTHS. AUDITORY P300 WAS RECORDED BEFORE TREATMENT. RESULTS: TWENTY-TWO PATIENTS RESPONDED FAVOURABLY TO SKY. THE PRETREATMENT P300 AMPLITUDE NEITHER DISTINGUISHED RESPONDERS AND NON-RESPONDERS NOR WAS ASSOCIATED WITH DIFFERENTIAL RATES OF RESPONSE. DISCUSSION: IT IS CONCLUDED THAT SKY THERAPY IS UNIFORMLY EFFECTIVE REGARDLESS OF THE PRETREATMENT P300 AMPLITUDE. 1998 17 889 21 EFFECT OF YOGA-BASED AND FORCED UNINOSTRIL BREATHING ON THE AUTONOMIC NERVOUS SYSTEM. SOME REPORTS HAVE DESCRIBED THE EFFECTS OF FORCED UNINOSTRIL BREATHING ON AUTONOMIC ACTIVITY AS SEX-SPECIFIC, WHILE OTHER REPORTS DESCRIBED SELECTIVE EFFECTS OF BREATHING THROUGH A SPECIFIC NOSTRIL ON THE TWO DIVISIONS OF THE AUTONOMIC NERVOUS SYSTEM, IRRESPECTIVE OF SEX. THERE ARE ALSO YOGA BREATHING TECHNIQUES WHICH INVOLVE VOLUNTARY UNINOSTRIL BREATHING. THESE TECHNIQUES ALSO INFLUENCED THE AUTONOMIC ACTIVITY BASED ON THE PATENT NOSTRIL RATHER THAN SEX. THESE DESCRIPTIONS WERE IN LINE WITH EXPERIENTIAL OBSERVATIONS OF THE ANCIENT SAGES DESCRIBED IN CLASSICAL YOGA TEXTS. THIS PAPER SUMMARIZES THESE PERSPECTIVES ON UNINOSTRIL BREATHING. 2003 18 695 32 EFFECT OF FOUR VOLUNTARY REGULATED YOGA BREATHING TECHNIQUES ON GRIP STRENGTH. BILATERAL HAND-GRIP STRENGTH WAS STUDIED IN 21 MALE VOLUNTEERS (M AGE = 25.6 YR., SD = 5.2). ALL WERE ASSESSED BEFORE AND AFTER FIVE PRACTICE SESSIONS OF 20 MIN. DURATION: RIGHT-NOSTRIL YOGA BREATHING, LEFT-NOSTRIL YOGA BREATHING, ALTERNATE-NOSTRIL YOGA BREATHING, BREATH AWARENESS, AND A NO-INTERVENTION SESSION. DATA WERE ANALYZED WITH ANALYSES OF VARIANCE AND AN ANALYSIS OF VARIANCE USING THE NO-BREATH AWARENESS CONTROL CONDITION AS A COVARIATE. THERE WERE NO SIGNIFICANT CHANGES. THE LEFT-HAND-GRIP STRENGTH REDUCED AFTER LEFT-NOSTRIL YOGA BREATHING. HOWEVER, FINDINGS WERE NOT CONSIDERED SIGNIFICANT, SO METHODOLOGICAL ISSUES IN YOGA RESEARCH WHICH COULD CONTRIBUTE TO NULL FINDINGS AND EVEN MASK ACTUAL CHANGES WERE DISCUSSED. 2009 19 1353 43 IMMEDIATE EFFECT OF SPECIFIC NOSTRIL MANIPULATING YOGA BREATHING PRACTICES ON AUTONOMIC AND RESPIRATORY VARIABLES. THE EFFECT OF RIGHT, LEFT, AND ALTERNATE NOSTRIL YOGA BREATHING (I.E., RNYB, LNYB, AND ANYB, RESPECTIVELY) WERE COMPARED WITH BREATH AWARENESS (BAW) AND NORMAL BREATHING (CTL). AUTONOMIC AND RESPIRATORY VARIABLES WERE STUDIED IN 21 MALE VOLUNTEERS WITH AGES BETWEEN 18 AND 45 YEARS AND EXPERIENCE IN THE YOGA BREATHING PRACTICES BETWEEN 3 AND 48 MONTHS. SUBJECTS WERE ASSESSED IN FIVE EXPERIMENTAL SESSIONS ON FIVE SEPARATE DAYS. THE SESSIONS WERE IN FIXED POSSIBLE SEQUENCES AND SUBJECTS WERE ASSIGNED TO A SEQUENCE RANDOMLY. EACH SESSION WAS FOR 40 MIN; 30 MIN FOR THE BREATHING PRACTICE, PRECEDED AND FOLLOWED BY 5 MIN OF QUIET SITTING. ASSESSMENTS INCLUDED HEART RATE VARIABILITY, SKIN CONDUCTANCE, FINGER PLETHYSMOGRAM AMPLITUDE, BREATH RATE, AND BLOOD PRESSURE. FOLLOWING RNYB THERE WAS A SIGNIFICANT INCREASE IN SYSTOLIC, DIASTOLIC AND MEAN PRESSURE. IN CONTRAST, THE SYSTOLIC AND DIASTOLIC PRESSURE DECREASED AFTER ANYB AND THE SYSTOLIC AND MEAN PRESSURE WERE LOWER AFTER LNYB. HENCE, UNILATERAL NOSTRIL YOGA BREATHING PRACTICES APPEAR TO INFLUENCE THE BLOOD PRESSURE IN DIFFERENT WAYS. THESE EFFECTS SUGGEST POSSIBLE THERAPEUTIC APPLICATIONS. 2008 20 744 23 EFFECT OF ROSARY PRAYER AND YOGA MANTRAS ON AUTONOMIC CARDIOVASCULAR RHYTHMS: COMPARATIVE STUDY. OBJECTIVE: TO TEST WHETHER RHYTHMIC FORMULAS SUCH AS THE ROSARY AND YOGA MANTRAS CAN SYNCHRONISE AND REINFORCE INHERENT CARDIOVASCULAR RHYTHMS AND MODIFY BAROREFLEX SENSITIVITY. DESIGN: COMPARISON OF EFFECTS OF RECITATION OF THE AVE MARIA (IN LATIN) OR OF A MANTRA, DURING SPONTANEOUS AND METRONOME CONTROLLED BREATHING, ON BREATHING RATE AND ON SPONTANEOUS OSCILLATIONS IN RR INTERVAL, AND ON BLOOD PRESSURE AND CEREBRAL CIRCULATION. SETTING: FLORENCE AND PAVIA, ITALY. PARTICIPANTS: 23 HEALTHY ADULTS. MAIN OUTCOME MEASURES: BREATHING RATE, REGULARITY OF BREATHING, BAROREFLEX SENSITIVITY, FREQUENCY OF CARDIOVASCULAR OSCILLATIONS. RESULTS: BOTH PRAYER AND MANTRA CAUSED STRIKING, POWERFUL, AND SYNCHRONOUS INCREASES IN EXISTING CARDIOVASCULAR RHYTHMS WHEN RECITED SIX TIMES A MINUTE. BAROREFLEX SENSITIVITY ALSO INCREASED SIGNIFICANTLY, FROM 9.5 (SD 4.6) TO 11.5 (4.9) MS/MM HG, P<0.05. CONCLUSION: RHYTHM FORMULAS THAT INVOLVE BREATHING AT SIX BREATHS PER MINUTE INDUCE FAVOURABLE PSYCHOLOGICAL AND POSSIBLY PHYSIOLOGICAL EFFECTS. 2001