1 1706 98 PATTERN OF BREATHING AND VENTILATORY RESPONSE TO CO2 IN SUBJECTS PRACTICING HATHA-YOGA. WE STUDIED EIGHT BELGIAN SUBJECTS WELL ADVANCED IN THE PRACTICE OF HATHA-YOGA AND COMPARED THEM WITH EIGHT SEX-, AGE-, AND HEIGHT-MATCHED CONTROL SUBJECTS. PRACTICE OF YOGA (RANGE 4-12 YR) INVOLVES CONTROL OF POSTURE AND MANIPULATION OF BREATHING, INCLUDING SLOW NEAR-VITAL CAPACITY MANEUVERS ACCOMPANIED BY APNEA AT END INSPIRATION AND END EXPIRATION. AVERAGE VALUES FOR THE YOGA AND THE CONTROL GROUP (IN PARENTHESES) ARE AS FOLLOWS: VENTILATION (VE) 5.53 1 X MIN-1 (7.07); TIDAL VOLUME (VT), 1.03 LITERS (0.56); RATE OF BREATHING, 5.5 MIN-1 (13.4); END-TIDAL PCO2, 39.0 TORR (35.3). ALL DIFFERENCES ARE SIGNIFICANT (P LESS THAN 0.05). VENTILATORY RESPONSE TO CO2 (REBREATHING TECHNIQUE) WAS SIGNIFICANTLY LOWER IN THE YOGA GROUP (P LESS THAN 0.01). THE REGRESSION RELATING VE TO VT DURING REBREATHING OF CO2 WAS VE = 8.1 (VT - 0.23) FOR THE YOGA GROUP AND VE = 15.8 (VT - 0.16) FOR THE CONTROL GROUP (P LESS THAN 0.005). WE ATTRIBUTE THESE CHANGES TO CHRONIC MANIPULATION OF RESPIRATION. 1981 2 804 10 EFFECT OF YOGA ON AEROBIC AND ANAEROBIC POWER OF MUSCLES. AEROBIC POWER (VO2 MAX) AND ANAEROBIC POWER WERE ESTIMATED IN MEDICAL STUDENTS BEFORE AND AFTER SIX WEEKS OF YOGIC TRAINING. A SIGNIFICANT INCREASE IN AEROBIC POWER AND A SIGNIFICANT DECREASE IN ANAEROBIC POWER WAS OBSERVED. THIS MAY BE DUE TO CONVERSION OF SOME OF THE FAST TWITCH (F.T.) MUSCLE FIBRES INTO SLOW TWITCH FIBRES (S.T.) DURING YOGIC TRAINING. 1991 3 885 20 EFFECT OF YOGA TRAINING ON REACTION TIME, RESPIRATORY ENDURANCE AND MUSCLE STRENGTH. THERE IS EVIDENCE THAT THE PRACTICE OF YOGA IMPROVES PHYSICAL AND MENTAL PERFORMANCE. THE PRESENT INVESTIGATION WAS UNDERTAKEN TO STUDY THE EFFECT OF YOGA TRAINING ON VISUAL AND AUDITORY REACTION TIMES (RTS), MAXIMUM EXPIRATORY PRESSURE (MEP), MAXIMUM INSPIRATORY PRESSURE (MIP), 40 MMHG TEST, BREATH HOLDING TIME AFTER EXPIRATION (BHTEXP), BREATH HOLDING TIME AFTER INSPIRATION (BHTINSP), AND HAND GRIP STRENGTH (HGS). TWENTY SEVEN STUDENT VOLUNTEERS WERE GIVEN YOGA TRAINING FOR 12 WEEKS. THERE WAS A SIGNIFICANT (P < 0.001) DECREASE IN VISUAL RT (FROM 270.0 +/- 6.20 (SE) TO 224.81 +/- 5.76 MS) AS WELL AS AUDITORY RT (FROM 194.18 +/- 6.00 TO 157.33 +/- 4.85 MS). MEP INCREASED FROM 92.61 +/- 9.04 TO 126.46 +/- 10.75 MMHG, WHILE MIP INCREASED FROM 72.23 +/- 6.45 TO 90.92 +/- 6.03 MMHG, BOTH THESE CHANGES BEING STATISTICALLY SIGNIFICANT (P < 0.05). 40 MMHG TEST AND HGS INCREASED SIGNIFICANTLY (P < 0.001) FROM 36.57 +/- 2.04 TO 53.36 +/- 3.95 S AND 13.78 +/- 0.58 TO 16.67 +/- 0.49 KG RESPECTIVELY. BHTEXP INCREASED FROM 32.15 +/- 1.41 TO 44.53 +/- 3.78S (P < 0.01) AND BHTINSP INCREASED FROM 63.69 +/- 5.38 TO 89.07 +/- 9.61 S (P < 0.05). OUR RESULTS SHOW THAT YOGA PRACTICE FOR 12 WEEKS RESULTS IN SIGNIFICANT REDUCTION IN VISUAL AND AUDITORY RTS AND SIGNIFICANT INCREASE IN RESPIRATORY PRESSURES, BREATH HOLDING TIMES AND HGS. 1992 4 1360 16 IMMEDIATE EFFECTS OF YOGA BREATHING WITH INTERMITTENT BREATH HOLDING ON RESPONSE INHIBITION AMONG HEALTHY VOLUNTEERS. 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. 2018 5 1323 25 HEMODYNAMIC OBSERVATIONS OF TUMO YOGA PRACTITIONERS IN A HIMALAYAN ENVIRONMENT. BACKGROUND: FEW ATTEMPTS HAVE BEEN MADE TO EVALUATE THE PHYSIOLOGY OF TRADITIONAL EASTERN HEALTH PRACTICES. THE GOAL OF THIS STUDY WAS TO EVALUATE THE HEMODYNAMIC EFFECTS OF THE MYSTERIOUS BUDDHIST PRACTICE OF TUMO. TUMO IS A MEDITATIVE PRACTICE THAT PRODUCES INNER HEAT THROUGH THE ALLEGED CULTIVATION OF BODY ENERGY-CHANNELS. METHODS: THIS STUDY WAS PERFORMED BY MEMBERS OF AN INTERNATIONAL EXPEDITION TO THE HIMALAYAN MOUNTAINS IN THE REPUBLIC OF INDIA. THE STUDY WAS PERFORMED IN AN UNPOPULATED OUTDOOR MOUNTAINOUS AREA AT AN ALTITUDE OF 16,400 FT WITH AMBIENT TEMPERATURES BETWEEN -10 AND -15( DEGREES )C. TWO (2) COHORTS OF SUBJECTS WERE STUDIED: HEALTHY NON-YOGI VOLUNTEERS AND TUMO PRACTITIONERS. ALL OF THE SUBJECTS WERE STRIPPED DOWN TO THEIR UNDERCLOTHES AND EXPOSED TO THE SUBZERO ATMOSPHERIC TEMPERATURES FOR 5 MINUTES. THE VOLUNTEERS WERE THEN PASSIVELY REWARMED WHILE THE TUMO PRACTITIONERS PERFORMED TUMO FOR UP TO 10 MINUTES. BLOOD PRESSURE, HEART RATE, AND STROKE VOLUME INDEX (SVI) AND CARDIAC INDEX WERE MEASURED NONINVASIVELY USING A NICOM HEMODYNAMIC MONITOR, WHILE CAROTID BLOOD FLOW AND BIVENTRICULAR PERFORMANCE WERE DETERMINED ECHOCARDIOGRAPHICALLY AT EACH STAGE OF THE EXPERIMENT. THE TOTAL PERIPHERAL RESISTANCE INDEX (TPRI), LEFT VENTRICULAR EJECTION FRACTION (LVEF), AND TRICUSPID ANNULAR PLANE SYSTOLIC EXCURSION (TAPSE) WERE DETERMINED USING STANDARD FORMULA. RESULTS: FOURTEEN (14) SUBJECTS (SIX VOLUNTEERS AND EIGHT TUMO PRACTITIONERS) COMPLETED THE STUDY. THERE WAS ONE FEMALE SUBJECT IN EACH GROUP. WITH COLD EXPOSURE, THE SVI AND CAROTID BLOOD FLOW DECREASED WHILE THE TPRI INCREASED SIGNIFICANTLY IN BOTH GROUPS. IN THE VOLUNTEER GROUP, THESE CHANGES RETUNED TO BASELINE WITH REWARMING. FOLLOWING TUMO, THE CARDIAC INDEX (4.8+/-0.6 VERSUS 4.0+/-0.5 L/M(2); P<0.01), CAROTID BLOOD FLOW (445+/-127 VERSUS 325+/-100 ML/MIN/M(2), P<0.01), LVEF (68+/-5 VERSUS 64+/-7%; P<0.05) AND TAPSE (2.9+/-0.4 VERSUS 2.4+/-0.5 CM; P<0.01) WERE SIGNIFICANTLY HIGHER WHEN COMPARED WITH BASELINE, WHILE THE TPRI WAS SIGNIFICANTLY LOWER (1786+/-189 VERSUS 2173+/-281; P<0.01). CONCLUSIONS: TUMO WAS ASSOCIATED WITH A HYPERDYNAMIC VASODILATED STATE WITH INCREASED BIVENTRICULAR PERFORMANCE. WE POSTULATE THAT TUMO RESULTS IN A MASSIVE INCREASE IN SYMPATHETIC ACTIVITY WITH ACTIVATION OF BROWN ADIPOSE TISSUE AND MARKED HEAT PRODUCTION. THE INCREASED HEAT PRODUCTION MAY EXPLAIN THE PARADOXICAL VASODILATATION IN TUMO PRACTITIONERS EXPOSED TO SUBZERO TEMPERATURES. 2014 6 887 16 EFFECT OF YOGA TYPE BREATHING ON HEART RATE AND CARDIAC AXIS OF NORMAL SUBJECTS. EFFECT OF INSPIRATORY AND EXPIRATORY PHASES OF NORMAL QUIET BREATHING, DEEP BREATHING AND SAVITRI PRANAYAM TYPE BREATHING ON HEART RATE AND MEAN VENTRICULAR QRS AXIS WAS INVESTIGATED IN YOUNG, HEALTHY UNTRAINED SUBJECTS. PRANAYAM TYPE BREATHING PRODUCED SIGNIFICANT CARDIOACCELERATION AND INCREASE IN QRS AXIS DURING THE INSPIRATORY PHASE AS COMPARED TO EUPNEA. ON THE OTHER HAND, EXPIRATORY EFFORT DURING PRANAYAM TYPE BREATHING DID NOT PRODUCE ANY SIGNIFICANT CHANGE IN HEART RATE OR QRS AXIS. THE CHANGES IN HEART RATE AND QRS AXIS DURING THE INSPIRATORY AND EXPIRATORY PHASES OF PRANAYAM TYPE BREATHING WERE SIMILAR TO THE CHANGES OBSERVED DURING THE CORRESPONDING PHASES OF DEEP BREATHING. 1986 7 655 15 EEG PAROXYSMAL GAMMA WAVES DURING BHRAMARI PRANAYAMA: A YOGA BREATHING TECHNIQUE. HERE WE REPORT THAT A SPECIFIC FORM OF YOGA CAN GENERATE CONTROLLED HIGH-FREQUENCY GAMMA WAVES. FOR THE FIRST TIME, PAROXYSMAL GAMMA WAVES (PGW) WERE OBSERVED IN EIGHT SUBJECTS PRACTICING A YOGA TECHNIQUE OF BREATHING CONTROL CALLED BHRAMARI PRANAYAMA (BHPR). TO OBTAIN NEW INSIGHTS INTO THE NATURE OF THE EEG DURING BHPR, WE ANALYZED EEG SIGNALS USING TIME-FREQUENCY REPRESENTATIONS (TFR), INDEPENDENT COMPONENT ANALYSIS (ICA), AND EEG TOMOGRAPHY (LORETA). WE FOUND THAT THE PGW CONSISTS OF HIGH-FREQUENCY BIPHASIC RIPPLES. THIS UNUSUAL ACTIVITY IS DISCUSSED IN RELATION TO PREVIOUS REPORTS ON YOGA AND MEDITATION. IT IS CONCLUDED THIS EEG ACTIVITY IS MOST PROBABLY NON-EPILEPTIC, AND THAT APPLYING THE SAME METHODOLOGY TO OTHER MEDITATION RECORDINGS MIGHT YIELD AN IMPROVED UNDERSTANDING OF THE NEUROCORRELATES OF MEDITATION. 2009 8 416 20 BODY TEMPERATURE AND ENERGY EXPENDITURE DURING AND AFTER YOGA BREATHING PRACTICES TRADITIONALLY DESCRIBED AS COOLING. BACKGROUND IN TRADITIONAL YOGA TEXTS, SHEETALI AND SITKARI PRANAYAMAS ARE DESCRIBED AS COOLING. THE PRESENT STUDY WAS AIMED AT RECORDING THE SURFACE BODY TEMPERATURE, OXYGEN CONSUMED, AND CARBON DIOXIDE ELIMINATED BEFORE, DURING, AND AFTER PERFORMANCE OF SHEETALI AND SITKARI PRANAYAMAS. MATERIAL AND METHODS SEVENTEEN HEALTHY MALE VOLUNTEERS WITH AGES BETWEEN 19 TO 25 YEARS (AVERAGE AGE 20.7+/-1.8 YEARS) WERE ASSESSED IN 4 SESSIONS, VIZ. SHEETALI PRANAYAMA, SITKARI PRANAYAMA, BREATH AWARENESS AND QUIET LYING, ON 4 SEPARATE DAYS, IN RANDOM SEQUENCE. THE AXILLARY SURFACE BODY TEMPERATURE (TRUSCOPE II, SCHILLER, CHINA) AND METABOLIC VARIABLES (QUARK CPET, COSMED, ITALY) WERE RECORDED IN 3 PERIODS: BEFORE (5 MINUTES), DURING (18 MINUTES), AND AFTER (5 MINUTES), IN EACH OF THE 4 SESSIONS. THE HEAT INDEX WAS CALCULATED IN THE BEFORE AND AFTER PERIODS, BASED ON RECORDINGS OF AMBIENT TEMPERATURE AND HUMIDITY. DATA WERE ANALYZED USING SPSS (VERSION 24.0). RESULTS BODY TEMPERATURE INCREASED SIGNIFICANTLY DURING SHEETALI AND SITKARI (P<0.05, P<0.01; RESPECTIVELY) WHILE IT DECREASED AFTER BREATH AWARENESS AND QUIET LYING DOWN (P<0.01, P<0.001; RESPECTIVELY) WHEN COMPARED WITH RESPECTIVE POST-EXERCISE STATES. OXYGEN CONSUMPTION INCREASED BY 9.0% DURING SHEETALI (P<0.05) AND BY 7.6% DURING SITKARI (P<0.01) WHILE IT DECREASED SIGNIFICANTLY DURING (P<0.05) AND AFTER (P<0.01) QUIET LYING DOWN COMPARED TO RESPECTIVE PRE-EXERCISE STATES. CONCLUSIONS THE RESULTS DO NOT SUPPORT THE DESCRIPTION OF THESE YOGA BREATHING PRACTICES AS COOLING. THESE YOGA BREATHING PRACTICES MAY BE USED TO INDUCE A MILD HYPERMETABOLIC STATE. 2020 9 2257 17 THE PHYSIOLOGICAL CORRELATES OF KUNDALINI YOGA MEDITATION: A STUDY OF A YOGA MASTER. THIS STUDY EXPLORES THE PHYSIOLOGICAL CORRELATES OF A HIGHLY PRACTICED KUNDALINI YOGA MEDITATOR. THORACIC AND ABDOMINAL BREATHING PATTERNS, HEART RATE (HR), OCCIPITAL PARIETAL ELECTROENCEPHALOGRAPH (EEG), SKIN CONDUCTANCE LEVEL (SCL), AND BLOOD VOLUME PULSE (BVP) WERE MONITORED DURING PREBASELINE, MEDITATION, AND POSTBASELINE PERIODS. VISUAL ANALYSES OF THE DATA SHOWED A DECREASE IN RESPIRATION RATE DURING THE MEDITATION FROM A MEAN OF 11 BREATHS/MIN FOR THE PRE- AND 13 BREATHS/MIN FOR THE POSTBASELINE TO A MEAN OF 5 BREATHS/MIN DURING THE MEDITATION, WITH A PREDOMINANCE OF ABDOMINAL/DIAPHRAGMATIC BREATHING. THERE WAS ALSO MORE ALPHA EEG ACTIVITY DURING THE MEDITATION (M = 1.71 MICROV) COMPARED TO THE PRE- (M = .47 MICROV) AND POSTBASELINE (M = .78 MICROV) PERIODS, AND AN INCREASE IN THETA EEG ACTIVITY IMMEDIATELY FOLLOWING THE MEDITATION (M = .62 MICROV) COMPARED TO THE PRE-BASELINE AND MEDITATIVE PERIODS (EACH WITH M = .26 MICROV). THESE FINDINGS SUGGEST THAT A SHIFT IN BREATHING PATTERNS MAY CONTRIBUTE TO THE DEVELOPMENT OF ALPHA EEG, AND THOSE PATTERNS NEED TO BE INVESTIGATED FURTHER. 2001 10 1354 15 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 11 808 18 EFFECT OF YOGA ON ARTERIAL STIFFNESS IN ELDERLY SUBJECTS WITH INCREASED PULSE PRESSURE: A RANDOMIZED CONTROLLED STUDY. OBJECTIVE: WE AIMED TO DETERMINE THE EFFECT OF YOGA ON ARTERIAL FUNCTION IN ELDERLY WITH INCREASED PULSE PRESSURE (PP). DESIGN: RANDOMIZED CONTROLLED STUDY WITH TWO PARALLEL GROUPS. PARTICIPANTS: ELDERLY SUBJECTS WITH PP>/=60 MMHG (N=60). INTERVENTIONS: YOGA GROUP (N=30) WAS ASSIGNED FOR YOGA TRAINING AND BRISK-WALKING (BW) GROUP (N=30) FOR BRISK-WALK WITH STRETCHING EXERCISE FOR 1H IN THE MORNING FOR 6 DAYS IN A WEEK FOR 12 WEEKS. MAIN OUTCOME MEASURES: ARTERIAL STIFFNESS MEASURES: BRACHIAL-ANKLE PULSE WAVE VELOCITY (BAPWV), CAROTID-FEMORAL PULSE WAVE VELOCITY (C-F PWV), AORTIC AUGMENTATION INDEX (AIX@75), ARTERIAL STIFFNESS INDEX AT BRACHIAL (BASI) AND TIBIAL ARTERIES (AASI). TOTAL SERUM NITRIC OXIDE CONCENTRATION (NOX) AS AN INDEX OF ENDOTHELIAL FUNCTION. HEART RATE VARIABILITY (HRV) MEASURES: LOW FREQUENCY AND HIGH FREQUENCY IN NORMALIZED UNITS (LFNU, HFNU) AND LF/HF RATIO. RESULTS: THE MEAN BETWEEN-GROUP CHANGE (WITH 95% CI) IN ARTERIAL STIFFNESS: C-F PWV(M/S) [1.25(0.59-1.89); P<0.001], BAPWV(M/S) [1.96(0.76-3.16), P<0.01], AIX@75 [3.07(0.24-5.89), P=0.066], AASI [8.3(4.06-12.53), P<0.001]; ENDOTHELIAL FUNCTION INDEX: NO(MUMOL/L) [-9.03(-14.57 TO -3.47), P<0.001]; SBP(MMHG) [14.23(12.03-16.44), P<0.001], DBP(MMHG) [0.1(-1.95-2.15), P=0.38], PP(MMHG) [14.07(11.2-16.92), P<0.001], MAP(MMHG) [4.7(3.08-6.32), P<0.001]; AND CARDIAC AUTONOMIC FUNCTION: LF(NU) [4.81(1.54-8.08), P<0.01], HF(NU) [-4.13(-7.57 TO -0.69), P<0.01], LF/HF RATIO [0.84(0.3-1.37), P<0.001], INDICATE SIGNIFICANT DIFFERENCE IN EFFECTS OF TWO INTERVENTION ON ARTERIAL STIFFNESS, ENDOTHELIAL FUNCTION, BP AND CARDIAC AUTONOMIC ACTIVITY. THERE WAS SIGNIFICANT CHANGE WITHIN-YOGA GROUP IN VASCULAR FUNCTION, BP AND AUTONOMIC FUNCTION, WHILE NO SIGNIFICANT CHANGE WITHIN-BW GROUP WAS OBSERVED. CONCLUSION: OUR FINDINGS SUGGEST THAT YOGA PROGRAM OFFERED WAS MORE EFFECTIVE THAN BRISK-WALK IN REDUCING ARTERIAL STIFFNESS ALONG WITH BP IN ELDERLY INDIVIDUALS WITH INCREASED PP. YOGA CAN ALSO SIGNIFICANTLY REDUCE SYMPATHETIC ACTIVITY AND IMPROVE ENDOTHELIAL FUNCTION WITH ENHANCEMENT IN BIOAVAILABILITY OF NO. 2015 12 379 10 BASILAR ARTERY OCCLUSION FOLLOWING YOGA EXERCISE: A CASE REPORT. BASILAR ARTERY OCCLUSION DEVELOPED IN A 34 YEAR OLD WOMAN 2 MONTHS AFTER ADOPTING UNUSUAL NECK POSTURES DURING YOGA PRACTICE. ON ANGIOGRAPHY, HER BASILAR ARTERY WAS FILLED WITH INTRALUMINAL CLOT WHILE THE VERTEBRAL ARTERIES WERE NORMAL. WE POSTULATE THAT A SEVERE REDUCTION IN BLOOD FLOW AND POSSIBLY AN INTIMAL TEAR TRIGGERED THROMBOSIS OF THE VERTEBRAL ARTERY AND THAT THE FINAL STROKE MECHANISM WAS ARTERY-TO-ARTERY EMBOLISM. 1993 13 2108 12 THE EFFECT OF YOGA ON PUBORECTALIS PARADOX. NINE PATIENTS WITH SEVERE DEFAECATION DIFFICULTIES PRIMARILY CONSIDERED TO BE DUE TO PUBORECTALIS DYSFUNCTION (PUBORECTALIS PARADOX), VERIFIED BY ELECTROMYOGRAPHY (EMG) OF THE STRIATED ANAL SPHINCTER MUSCLES, WERE OFFERED TRAINING IN YOGIC TECHNIQUES OF RELAXATION AND MUSCLE CONTROL IN ORDER TO CHANGE THE ACTIVITY OF THE PELVIC FLOOR MUSCLES DURING ATTEMPTED DEFAECATION. FIVE PATIENTS COMPLETED THE TRAINING PROGRAM OF 20 2-HOUR SESSIONS AND WERE RE-EXAMINED CLINICALLY AND WITH EMG. ONE PATIENT REGAINED A NORMAL EMG PATTERN BUT NONE OF THE PATIENTS IMPROVED CLINICALLY. 1991 14 1612 24 METABOLIC ENERGY CONTRIBUTIONS DURING HIGH-INTENSITY HATHA YOGA AND PHYSIOLOGICAL COMPARISONS BETWEEN ACTIVE AND PASSIVE (SAVASANA) RECOVERY. PURPOSE: THE OBJECTIVE OF THIS STUDY WAS TO INVESTIGATE METABOLIC ENERGY CONTRIBUTIONS DURING HIGH-INTENSITY HATHA YOGA (HIHY) AND TO COMPARE CHANGES IN PHYSIOLOGICAL VARIABLES BETWEEN ACTIVE AND PASSIVE RECOVERY METHODS. METHODS: THE STUDY INVOLVED 20 WOMEN YOGA INSTRUCTORS (N = 20) WHO PERFORMED 10 MIN OF HIHY (VIGOROUS SUN SALUTATION). UPON COMPLETION, THEY WERE RANDOMLY ASSIGNED TO EITHER ACTIVE (WALKING; N = 10) OR PASSIVE (SAVASANA; N = 10) RECOVERY GROUPS FOR A PERIOD OF 10 MIN. DURING HIHY, PHYSIOLOGICAL VARIABLES SUCH AS HEART RATE (HRPEAK AND HRMEAN), OXYGEN UPTAKE (VO2PEAK AND VO2MEAN), AND BLOOD LACTATE CONCENTRATIONS (PEAK LA(-)) WERE MEASURED. ENERGETIC CONTRIBUTIONS (PHOSPHAGEN; WPCR, GLYCOLYTIC; WGLY, AND OXIDATIVE; WOXI) IN KJ AND % WERE ESTIMATED USING VO2 AND LA(-) DATA. FURTHERMORE, THE METABOLIC EQUIVALENTS (METS) OF VO2PEAK AND VO2MEAN WERE CALCULATED. TO COMPARE DIFFERENT RECOVERY MODES, HRPOST, DELTAHR, VO2POST, DELTAVO2, RECOVERY LA(-), AND RECOVERY DELTALA(-) WERE ANALYZED. RESULTS: THE RESULTS REVEALED THAT HRPEAK, VO2PEAK, AND PEAK LA(-) DURING HIHY SHOWED NO DIFFERENCES BETWEEN THE TWO GROUPS (P > 0.05). VALUES OF HRPEAK, HRMEAN, METS OF VO2PEAK AND VO2MEAN, AND LA(-) DURING HIHY WERE 95.6% OF HRMAX, 88.7% OF HRMAX, 10.54 +/- 1.18, 8.67 +/-.98 METS, AND 8.31 +/- 2.18 MMOL.L(-1), RESPECTIVELY. FURTHERMORE, WOXI WAS SIGNIFICANTLY HIGHER COMPARED WITH WPCR, WGLY, AND ANAEROBIC CONTRIBUTION (WPCR + WGLY), IN KJ AND % (P < 0.0001). VO2POST AND RECOVERY DELTALA(-) WERE SIGNIFICANTLY HIGHER IN THE ACTIVE RECOVERY GROUP (P < 0.0001, P = 0.0369, RESPECTIVELY). VALUES OF DELTAVO2 AND RECOVERY LA(-) WERE SIGNIFICANTLY LOWER IN THE ACTIVE GROUP COMPARED WITH THE PASSIVE GROUP (P = 0.0115, P = 0.0291, RESPECTIVELY). CONCLUSIONS: THE STUDY CONCLUDED THAT HIGH-INTENSITY HATHA YOGA WHICH WAS PERFORMED FOR 10 MIN IS A SUITABLE OPTION FOR RELATIVELY HEALTHY PEOPLE IN THE MODERN WORKPLACE WHO MAY HAVE HATHA YOGA EXPERIENCE BUT DO NOT HAVE TIME TO PERFORM A PROLONGED EXERCISE. FOLLOWING ACTIVE RECOVERY, THEY CAN PARTICIPATE IN FURTHER HIHY SESSIONS DURING SHORT BREAKS. FURTHERMORE, A FASTER RETURN TO WORK CAN BE SUPPORTED BY PHYSIOLOGICAL RECOVERY. 2021 15 1728 13 PERFORMANCE ON PSYCHOMOTOR TASKS FOLLOWING TWO YOGA-BASED RELAXATION TECHNIQUES. PREVIOUSLY CYCLIC MEDITATION AND SUPINE REST HAVE BEEN SHOWN TO IMPROVE PERFORMANCE IN A LETTER CANCELLATION TASK REQUIRING ATTENTION, VISUAL SCANNING, AND MOTOR SPEED. THE PRESENT STUDY ASSESSED THE PERFORMANCE IN 57 VOLUNTEERS (ALL MALE, M AGE = 26.5 YR., SD = 4.6) IN THREE TASKS, VIZ., A DIGIT-LETTER SUBSTITUTION TASK (DLST), A LETTER-COPYING TASK, AND A CIRCLE-DOTTING TASK. THE DLST ASSESSED ATTENTION AND SPEED OF INFORMATION PROCESSING, WHILE THE OTHER 2 TESTS ASSESSED MOTOR SPEED. EACH PARTICIPANT WAS ASSESSED BEFORE AND AFTER THREE TYPES OF SESSIONS: CYCLIC MEDITATION, SUPINE REST, AND CONTROL (NO INTERVENTION). DLST SCORES AND SCORES FOR LETTER-COPYING AND CIRCLE-DOTTING TASKS IMPROVED SIGNIFICANTLY AFTER CYCLIC MEDITATION; THE SAME SCORES ALSO IMPROVED AFTER SUPINE REST. THERE WAS NO CHANGE AFTER THE NO-INTERVENTION/CONTROL SESSION. FROM THE RESULTS IT WAS DIFFICULT TO CONCLUDE WHETHER IMPROVED DLST SCORES AFTER CYCLIC MEDITATION WERE DUE TO BETTER INFORMATION PROCESSING SPEED OR IMPROVED MOTOR SPEED. 2009 16 1433 17 IMPROVING THE DEGREE OF PUBIC ARCH POST-YOGA EXERCISE DURING PREGNANCY. YOGA EXERCISES UNDERTAKEN DURING THE MATERNITY PERIOD MAY REDUCE UNPLEASANT SYMPTOMS DURING PREGNANCY AND REDUCE DELIVERY PAIN. FLEXIBILITY OF THE HIP JOINT IMPROVES THE DEGREE OF PUBIC ARCH CREATED IN AN OPEN-LEG POSTURE AND WIDENS THE PELVIC OUTLET REGION, SHORTENING THE TIME REQUIRED FOR DELIVERY AND FACILITATING EASY DELIVERY. THE DEGREE OF PUBIC ARCH IS RELATED TO THE FLEXIBILITY OF THE HIP JOINT. ALTHOUGH MANY STUDIES HAVE SHOWN THE EFFECT OF YOGA EXERCISE DURING PREGNANCY, THE EFFECT ON THE DEGREE OF THE PUBIC ARCH HAS NOT BEEN ELUCIDATED. TO ELUCIDATE WHETHER THE DEGREE OF THE PUBIC ARCH IS IMPROVED BY YOGA EXERCISE DURING PREGNANCY, THIS STUDY ENROLLED 177 PREGNANT SUBJECTS. THE DEGREE OF PUBIC ARCH PRE- AND POST-YOGA EXERCISE WAS MEASURED USING INSTRUMENTS IN AN OPEN-LEG POSTURE (SEATED WITH FEMURS ABDUCTED). THE MEAN PUBIC ARCH PRE- AND POST-YOGA WAS 122.61 AND 127.93 DEGREES, RESPECTIVELY. THE DEGREE OF PUBIC ARCH POST-YOGA SESSIONS WAS SIGNIFICANTLY INCREASED COMPARED WITH PRE-YOGA SESSIONS (P < 0.01). THIS STUDY SHOWED THAT YOGA EXERCISES DURING THE PREGNANCY PERIOD APPEAR TO IMPROVE THE DEGREE OF PUBIC ARCH. 2021 17 898 16 EFFECT OF YOGASANAS ON THE VISUAL AND AUDITORY REACTION TIME. VISUAL AND AUDITORY REACTION TIME (VRT, ART) WAS STUDIED IN 83 HEALTHY MALE SUBJECTS OF 30-40 YEARS OF AGE WHO HAD NEVER PRACTICED YOGASANAS BEFORE. THESE SUBJECTS WERE DIVIDED INTO TWO GROUPS VIZ. GROUP A WHOSE VRT AND ART WAS DETERMINED AFTER 1 HR. YOGASANAS AND GROUP B WHOSE ART AND VRT WAS DETERMINED AFTER 6 WEEKS YOGASANAS TRAINING PROGRAMME. VRT AND ART SHOWED A SIGNIFICANT REDUCTION IN GROUP A (P LESS THAN .05) AND GROUP B (P LESS THAN .001). 1989 18 1420 19 IMPROVED PERFORMANCE IN THE TOWER OF LONDON TEST FOLLOWING YOGA. TWENTY GIRLS BETWEEN 10 AND 13 YEARS OF AGE, STUDYING AT A RESIDENTIAL SCHOOL WERE RANDOMLY ASSIGNED TO TWO GROUPS. ONE GROUP PRACTICED YOGA FOR ONE HOUR FIFTEEN MINUTES PER DAY, 7 DAYS A WEEK, WHILE THE OTHER GROUP WAS GIVEN PHYSICAL TRAINING FOR THE SAME TIME. TIME FOR PLANNING AND FOR EXECUTION AND THE NUMBER OF MOVES REQUIRED TO COMPLETE THE TOWER OF LONDON TASK WERE ASSESSED FOR BOTH GROUPS AT THE BEGINNING AND END OF A MONTH. THESE THREE ASSESSMENTS WERE SEPARATELY TESTED IN INCREASINGLY COMPLEX TASKS REQUIRING 2-MOVES, 4-MOVES AND 5-MOVES. THE PRE-POST DATA WERE COMPARED USING THE WILCOXON PAIRED SIGNED RANKS TEST. THE YOGA GROUP SHOWED A SIGNIFICANT REDUCTION IN PLANNING TIME FOR BOTH 2-MOVES AND 4-MOVES TASKS (53.9 AND 59.1 PERCENT RESPECTIVELY), EXECUTION TIME IN BOTH 4-MOVES AND 5-MOVES TASKS (63.7 AND 60.3 PERCENT RESPECTIVELY), AND IN THE NUMBER OF MOVES IN THE 4-MOVES TASKS (20.9 PERCENT). THE PHYSICAL TRAINING GROUP SHOWED NO CHANGE. HENCE YOGA TRAINING FOR A MONTH REDUCED THE PLANNING AND EXECUTION TIME IN SIMPLE (2-MOVES) AS WELL AS COMPLEX TASKS (4, 5-MOVES) AND FACILITATED REACHING THE TARGET WITH A SMALLER NUMBER OF MOVES IN A COMPLEX TASK (4-MOVES). 2001 19 695 19 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 20 1013 15 EFFECTS OF ONLINE YOGA AND TAI CHI ON PHYSICAL HEALTH OUTCOME MEASURES OF ADULT INFORMAL CAREGIVERS. AIMS: THIS STUDY AIMED TO INVESTIGATE THE EFFECTS OF ONLINE VINYASA YOGA (VY) AND TAIJIFIT (12 WEEKS) IN INFORMAL CAREGIVERS (>/=18 YEARS OF AGE). METHODS: TWENTY-NINE PARTICIPANTS WERE RANDOMIZED TO TWO GROUPS: VY (N = 16, 55.87 +/- 12.31 YEARS) OR TAIJIFIT (N = 13, 55.07 +/- 12.65 YEARS). MAIN OUTCOME MEASURES: PRIOR TO AND FOLLOWING THE STUDY, ASSESSMENTS WERE MADE FOR MUSCLE STRENGTH (1-RM LEG PRESS, CHEST PRESS, AND HANDGRIP), MUSCLE ENDURANCE (LEG PRESS AND CHEST PRESS; MAXIMAL NUMBER OF REPETITIONS PERFORMED TO FATIGUE AT 80% AND 70% BASELINE 1-RM, RESPECTIVELY), ABDOMINAL ENDURANCE (MAXIMUM NUMBER OF CONSECUTIVE CURL-UPS TO FATIGUE), TASKS OF FUNCTIONALITY (DYNAMIC BALANCE AND WALKING SPEED), AND FLEXIBILITY (SIT AND REACH). RESULTS: THERE WAS A SIGNIFICANT INCREASE OVER TIME FOR MUSCLE STRENGTH, MUSCLE ENDURANCE, TASKS OF FUNCTIONALITY, AND FLEXIBILITY (P = 0.001). THE VY GROUP EXPERIENCED A GREATER IMPROVEMENT IN CHEST PRESS ENDURANCE (VY: PRE 19.25 +/- 5.90, POST 28.06 +/- 7.60 REPS; TAIJIFIT PRE 15.69 +/- 4.49, POST 21.07 +/- 5.85 REPS; P = 0.019) AND ABDOMINAL ENDURANCE (VY: PRE 37.12 +/- 31.26, POST 68.43 +/- 55.07 REPS; TAIJIFIT PRE 19.23 +/- 19.00, POST 32.07 +/- 20.87 REPS; P = 0.034) COMPARED TO THE TAIJIFIT GROUP. CONCLUSIONS: VY AND TAIJIFIT ARE EFFECTIVE FOR IMPROVING MUSCLE STRENGTH AND ENDURANCE, TASKS OF FUNCTIONALITY, AND FLEXIBILITY IN INFORMAL CAREGIVERS. VY LED TO GREATER GAINS IN CHEST PRESS ENDURANCE AND ABDOMINAL CURL-UPS. 2019