1 2916 126 [THE EFFECT OF HATHA YOGA ON POOR POSTURE IN CHILDREN AND THE PSYCHOPHYSIOLOGIC CONDITION IN ADULTS]. HATHA YOGA'S EFFECTS ON THE POSTURE OF 15 TEN YEAR-OLD CHILDREN AND ALSO ITS EFFECTS ON THE PSYCHOPHYSICAL CONDITION OF 15 GROWN-UPS WAS STUDIED. AS SYMPTOMS, DURING THE FIRST EXAMINATION, 12 OF THE 15 CHILDREN HAD HEAD PROTRUSION, 14 HAD SHORTENED BACK EXTENSORS, ALL 15 HAD BENT SHOULDERS, RELAXATION OF THE FRONTAL ABDOMINAL WALL AND SHORTENED FLEXORS OF BOTH THE CALF AND THIGH. THE CONDITION OF ALL THE CHILDREN WAS REMARKABLY BETTER AFTER SIX MONTHS OF PRACTICE, SOME OF THE SYMPTOMS HAVING COMPLETELY DISAPPEARED (HEAD PROTRUSION, ASYMMETRY OF THE SHOULDERS, MAMILLAS AND HIPS, SHORTENING OF THE PECTORALIS AND BACK EXTENSORS), 9 CHILDREN STILL HAD SLIGHT TO MEDIUM RELAXATION OF THE FRONTAL ABDOMINAL WALL, 8 CHILDREN STILL HAD BENT SHOULDERS, AND 1 CHILD STILL HAD SHORTENED CALF AND THIGH EXTENSORS. THE ADULTS WERE IN A WEAK OR VERY WEAK PSYCHOPHYSICAL CONDITION, THEY TIRED EASILY, THEY COMPLAINED OF SLEEP DISTURBANCES, FLUCTUATION OF EMOTIONAL STATE AND IRRITABILITY. AFTER 3 MONTHS OF PRACTICE, THE VITAL CAPACITY OF 8 OF THE ADULTS TESTED (53.3%) HAD INCREASED BY 435 ML. THE TIME DURATION OF APNOEA HAD LENGTHENED FOR ALL OF THE PRACTICING ADULTS, BUT WITH A TRULY LARGE VARIATION AMONG THEM (A MEDIAN OF 14%). THE DEEP WAIST-BEND LENGTH OF ALL THE PRACTICING ADULTS HAD LENGTHENED BY AN AVERAGE OF 9.5 CM, AND THE AVERAGE LENGTH INCREASE FOR THE 3-MINUTE RUNNING TEST WAS 42 M. ALL THOSE WHO PRACTICED, HAD EXPERIENCED AN ALLEVIATION OF PSYCHIC DIFFICULTIES.	1990	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
2 2775  22 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	

3  438  19 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	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
4 1578  25 MEASUREMENT OF THE EFFECT OF ISHA YOGA ON CARDIAC AUTONOMIC NERVOUS SYSTEM USING SHORT-TERM HEART RATE VARIABILITY. BACKGROUND: BENEFICIAL EFFECTS OF YOGA HAVE BEEN POSTULATED TO BE DUE TO MODULATION OF THE AUTONOMIC NERVOUS SYSTEM. OBJECTIVE: TO ASSESS THE EFFECT OF ISHA YOGA PRACTICES ON CARDIOVASCULAR AUTONOMIC NERVOUS SYSTEM THROUGH SHORT-TERM HEART RATE VARIABILITY (HRV). DESIGN OF THE STUDY: SHORT-TERM HRV OF LONG-TERM REGULAR HEALTHY 14 (12 MALES AND 2 FEMALES) ISHA YOGA PRACTITIONERS WAS COMPARED WITH THAT OF AGE- AND GENDER-MATCHED 14 (12 MALES AND 2 FEMALES) NON-YOGA PRACTITIONERS. METHODS AND MATERIALS: ECG LEAD II AND RESPIRATORY MOVEMENTS WERE RECORDED IN BOTH GROUPS USING POLYRITE DURING SUPINE REST FOR 5 MIN AND CONTROLLED DEEP BREATHING FOR 1 MINUTE. FREQUENCY DOMAIN ANALYSIS [RR INTERVAL IS THE MEAN OF DISTANCE BETWEEN SUBSEQUENT R WAVE PEAKS IN ECG], LOW FREQUENCY (LF) POWER, HIGH FREQUENCY (HF) POWER, LF NORMALIZED UNITS (NU), HF NU, LF/HF RATIO] AND TIME DOMAIN ANALYSIS [STANDARD DEVIATION OF NORMAL TO NORMAL INTERVAL (SDNN), SQUARE OF MEAN SQUARED DIFFERENCE OF SUCCESSIVE NORMAL TO NORMAL INTERVALS (RMSSD), NORMAL TO NORMAL INTERVALS WHICH ARE DIFFERING BY 50 MS (NN50), AND PERCENTAGE OF NN50 (PNN50)] OF HRV VARIABLES WERE ANALYZED FOR SUPINE REST. TIME DOMAIN ANALYSIS WAS RECORDED FOR DEEP BREATHING. RESULTS: RESULTS SHOWED STATISTICALLY SIGNIFICANT DIFFERENCES BETWEEN ISHA YOGA PRACTITIONERS AND CONTROLS IN BOTH FREQUENCY AND TIME DOMAIN ANALYSES OF HRV INDICES, WITH NO DIFFERENCE IN RESTING HEART RATE BETWEEN THE GROUPS. CONCLUSIONS: PRACTITIONERS OF ISHA YOGA SHOWED WELL-BALANCED BENEFICIAL ACTIVITY OF VAGAL EFFERENTS, AN OVERALL INCREASED HRV, AND SYMPATHOVAGAL BALANCE, COMPARED TO NON-YOGA PRACTITIONERS DURING SUPINE REST AND DEEP BREATHING.	2012	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
5 2727  24 YOGA NIDRA RELAXATION INCREASES HEART RATE VARIABILITY AND IS UNAFFECTED BY A PRIOR BOUT OF HATHA YOGA. OBJECTIVE: THE MEASUREMENT OF HEART RATE VARIABILITY (HRV) IS OFTEN APPLIED AS AN INDEX OF AUTONOMIC NERVOUS SYSTEM (ANS) BALANCE AND, THEREFORE, MYOCARDIAL STABILITY. PREVIOUS STUDIES HAVE SUGGESTED THAT RELAXATION OR MIND-BODY EXERCISE CAN INFLUENCE ANS BALANCE POSITIVELY AS MEASURED BY HRV BUT MAY ACT VIA DIFFERENT MECHANISMS. NO STUDIES, TO THE AUTHORS' KNOWLEDGE, HAVE EXAMINED THE ACUTE RESPONSE IN HRV TO INTERVENTIONS COMBINING RELAXATION AND MIND-BODY EXERCISE. THE OBJECTIVE OF THIS STUDY WAS TO COMPARE THE ACUTE HRV RESPONSES TO YOGA NIDRA RELAXATION ALONE VERSUS YOGA NIDRA RELAXATION PRECEDED BY HATHA YOGA. DESIGN: THIS WAS A RANDOMIZED COUNTER-BALANCED TRIAL. SETTING: THE TRIAL WAS CONDUCTED IN A UNIVERSITY EXERCISE PHYSIOLOGY LABORATORY. SUBJECTS: SUBJECTS INCLUDED 20 WOMEN AND MEN (29.15+/-6.98 YEARS OF AGE, WITH A RANGE OF 18-47 YEARS). INTERVENTIONS: PARTICIPANTS COMPLETED A YOGA PLUS RELAXATION (YR) SESSION AND A RELAXATION ONLY (R) SESSION. RESULTS: THE YR CONDITION PRODUCED SIGNIFICANT CHANGES FROM BASELINE IN HEART RATE (HR; BEATS PER MINUTE [BPM], P<0.001) AND INDICES OF HRV: R-R (MS, P<0.001), PNN50 (%, P=0.009), LOW FREQUENCY (LF; %, P=0.008) AND HIGH FREQUENCY (HF; %, P=0.035). THE R CONDITION PRODUCED SIGNIFICANT CHANGES FROM BASELINE IN HEART RATE (BPM, P<0.001) AS WELL AS INDICES OF HRV: R-R (MS, P<0.001), HF (MS(2), P=0.004), LF (%, P=0.005), HF (%, P=0.008) AND LF:HF RATIO (%, P=0.008). THERE WERE NO SIGNIFICANT DIFFERENCES BETWEEN CONDITIONS AT BASELINE NOR FOR THE CHANGES FROM BASELINE FOR ANY OF THE VARIABLES. CONCLUSIONS: THESE CHANGES DEMONSTRATE A FAVORABLE SHIFT IN AUTONOMIC BALANCE TO THE PARASYMPATHETIC BRANCH OF THE ANS FOR BOTH CONDITIONS, AND THAT YOGA NIDRA RELAXATION PRODUCES FAVORABLE CHANGES IN MEASURES OF HRV WHETHER ALONE OR PRECEDED BY A BOUT OF HATHA YOGA.	2012	
                                                                                                                                                                                                                                                                                                                                                                                               
6  297  20 ALTERNATE NOSTRIL BREATHING AT DIFFERENT RATES AND ITS INFLUENCE ON HEART RATE VARIABILITY IN NON PRACTITIONERS OF YOGA. INTRODUCTION: HEART RATE VARIABILITY IS A MEASURE OF MODULATION IN AUTONOMIC INPUT TO THE HEART AND IS ONE OF THE MARKERS OF AUTONOMIC FUNCTIONS. THOUGH THERE ARE MANY STUDIES ON THE LONG TERM INFLUENCE OF BREATHING ON HRV (HEART RATE VARIABILITY) THERE ARE ONLY A FEW STUDIES ON THE IMMEDIATE EFFECT OF BREATHING ESPECIALLY ALTERNATE NOSTRIL BREATHING ON HRV. THIS STUDY FOCUSES ON THE IMMEDIATE EFFECTS OF ALTERNATE NOSTRIL BREATHING AND THE INFLUENCE OF DIFFERENT BREATHING RATES ON HRV. MATERIALS AND METHODS: THE STUDY WAS DONE ON 25 SUBJECTS IN THE AGE GROUP OF 17-35 YEARS. ECG AND RESPIRATION WERE RECORDED BEFORE INTERVENTION AND IMMEDIATELY AFTER THE SUBJECTS WERE ASKED TO PERFORM ALTERNATE NOSTRIL BREATHING FOR FIVE MINUTES. RESULTS: LOW FREQUENCY (LF) WHICH IS A MARKER OF SYMPATHETIC ACTIVITY INCREASED, HIGH FREQUENCY (HF) WHICH IS A MARKER OF PARASYMPATHETIC ACTIVITY DECREASED AND THEIR RATIO LF/HF WHICH IS A MARKER OF SYMPATHO/VAGAL BALANCE INCREASED IMMEDIATELY AFTER 6 AND 12 MINUTES IN COMPARISON TO BASELINE VALUES WHEREAS THERE WAS NO SIGNIFICANT DIFFERENCE IN THE MEANS OF THESE COMPONENTS WHEN BOTH 6 AND 12 MINUTES WERE COMPARED. CONCLUSION: IMMEDIATE EFFECTS OF ALTERNATE NOSTRIL BREATHING ON HRV IN NON PRACTITIONERS OF YOGIC BREATHING ARE VERY DIFFERENT FROM THE LONG TERM INFLUENCE OF YOGIC BREATHING ON HRV WHICH SHOW A PREDOMINANT PARASYMPATHETIC INFLUENCE ON THE HEART.	2016	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
7  985  30 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	
                                                                                                                                                            
8  350  23 ASSESSMENT OF CARDIAC AUTONOMIC TONE FOLLOWING LONG SUDARSHAN KRIYA YOGA IN ART OF LIVING PRACTITIONERS. OBJECTIVE: THE BREATHING PROCESSES ARE KNOWN TO MODULATE CARDIAC AUTONOMIC TONE AND IMPROVE PSYCHOLOGICAL STATUS. WE INVESTIGATED CARDIAC AUTONOMIC TONE FOLLOWING LONG SUDARSHAN KRIYA YOGA (SKY) USING HEART RATE VARIABILITY (HRV) AND SKIN CONDUCTANCE LEVEL (SCL). METHODS: THIRTY HEALTHY VOLUNTEERS (AGE 28.3 +/- 8.4 YEARS; 23 M: 7 F) PARTICIPATED IN THE STUDY. ELECTROCARDIOGRAM (ECG) AND SCL WERE RECORDED FOR 5 MIN EACH, BEFORE AND AFTER LONG SKY. LONG SKY IS A COMBINATION OF PRANAYAMA AND CYCLIC RHYTHMIC BREATHING AND IS PERFORMED BY FOLLOWING THE GUIDED AUDIO INSTRUCTIONS. HRV ANALYSIS WAS USED FOR THE ASSESSMENT OF CARDIAC AUTONOMIC TONE. TIME AND FREQUENCY DOMAIN PARAMETERS OF HRV WERE CALCULATED BY USING RR INTERVAL OF ECG. SCL WAS ACQUIRED USING GALVANIC SKIN RESPONSE (GSR) AMPLIFIER OF POWERLAB IN MICROSEIMENS (MUS). RESULTS: TIME DOMAIN PARAMETERS OF HRV, INCLUDING MEAN RR INTERVAL (P = 0.000), RESPIRATORY SINUS ARRHYTHMIA (RSA) (P = 0.037), STANDARD DEVIATION OF ALL NN INTERVALS (SDNN) (P = 0.013), NN50 COUNT DIVIDED BY THE TOTAL NUMBER OF ALL NN INTERVALS (PNN50) (P = 0.004), AND SQUARE ROOT OF THE MEAN OF THE SUM OF THE SQUARES OF DIFFERENCES BETWEEN ADJACENT NN INTERVALS (RMSSD) (P = 0.002) INCREASED, AND MEAN HEART RATE DECREASED (P = 0.000) FOLLOWING LONG SKY. IN FREQUENCY DOMAIN ANALYSIS, POWER OF LOW-FREQUENCY (LF) COMPONENT (P = 0.010) AND LF/HF RATIO (P = 0.008) DECREASED SIGNIFICANTLY, WHEREAS POWER OF HIGH FREQUENCY (HF) SIGNIFICANTLY INCREASED (P = 0.010). SCL DECREASED FOLLOWING LONG SKY, ALTHOUGH IT DID NOT ATTAIN STATISTICAL SIGNIFICANCE. CONCLUSIONS: THE RESULTS SUGGEST THAT LONG SKY INDUCES SIGNIFICANT OSCILLATIONS IN CARDIAC AUTONOMIC TONE. PARASYMPATHETIC ACTIVITY INCREASES AND SYMPATHETIC ACTIVITY DECREASES AND SYMPATHOVAGAL BALANCE IMPROVES FOLLOWING LONG SKY. DECREASE IN SYMPATHETIC ACTIVITY IS ALSO DEMONSTRATED BY DECREASE IN CONDUCTANCE ALTHOUGH IT DID NOT REACH STATISTICAL SIGNIFICANCE. FROM THIS STUDY IT CAN BE CONCLUDED THAT LONG SKY HAS A BENEFICIAL EFFECT ON CARDIAC AUTONOMIC TONE, AND PSYCHOPHYSIOLOGICAL RELAXATION. IT MAY SERVE AS A TOOL TO IMPROVE HRV, WHICH IS THE MARKER OF CARDIOVASCULAR HEALTH.	2017	
                                         
9  880  23 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	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
10  752  25 EFFECT OF SHORT-TERM AND LONG-TERM BRAHMAKUMARIS RAJA YOGA MEDITATION ON PHYSIOLOGICAL VARIABLES. EFFECT OF SHORT-TERM AND LONG-TERM BRAHMAKUMARIS RAJA YOGA MEDITATION ON PHYSIOLOGICAL VARIABLES LIKE HEART RATE (HR), RESPIRATORY RATE (RR), SYSTOLIC BLOOD PRESSURE (SBP) AND DIASTOLIC BLOOD PRESSURE (DBP) WAS EVALUATED IN 100 SUBJECTS PRACTICING RAJA YOGA MEDITATION. ALL 100 SUBJECTS (33 MEN AND 67 WOMEN) WERE AGED 30 YEARS AND ABOVE (MEAN AGE 52.06 +/- 12.76 YEARS). SHORT-TERM MEDITATORS (STM) (N = 27) PRACTICED RAJA YOGA MEDITATION FOR DURATION OF SIX MONTHS TO FIVE YEARS (MEAN DURATION 3.37 +/- 1.67 YEARS) AND LONG-TERM MEDITATORS (LTM) (N = 73) PRACTICED RAJA YOGA MEDITATION FOR MORE THAN FIVE YEARS (MEAN DURATION 11.19 +/- 5.13 YEARS). THE PARTICIPANTS WERE ASKED TO MEDITATE AND THE PHYSIOLOGICAL VARIABLES (HR, RR, SBP AND DBP) WERE RECORDED TWICE (15 MINUTES AND 30 MINUTES) AFTER BEGINNING OF MEDITATION. ALSO, THE FASTING BLOOD SUGAR WAS ESTIMATED BY GLUCOMETER. THE STUDY SUBJECTS DID NOT DIFFER SIGNIFICANTLY IN AGE AND VARIOUS ANTHROPOMETRIC CHARACTERISTICS SUCH AS BODY WEIGHT, BODY MASS INDEX, WAIST-HIP RATIO AND FASTING BLOOD SUGAR. COMPARISON BETWEEN STM AND LTM SHOWED THAT THE CHANGES FROM BASELINE VALUES (FROM PREMEDITATION TO POST-MEDITATION AT 15 AND 30 MINUTES) IN LTM WERE NOT STATISTICALLY SIGNIFICANT WITH THOSE IN STM (P > 0.05). HOWEVER, WITHIN GROUP DIFFERENCES IN LTM REVEALED THAT CHANGES IN THE PHYSIOLOGICAL VARIABLES WERE STATISTICALLY SIGNIFICANT WHEN COMPARED BETWEEN PRE AND POST MEDITATION BOTH AT 15 AND 30 MINUTES. THE STUDY SUGGESTS THAT THE LONG-TERM PRACTICE OF RAJA YOGA MEDITATION IMPROVES BASIC CARDIO-RESPIRATORY FUNCTIONS DUE TO SHIFTING OF THE AUTONOMIC BALANCE IN FAVOR OF PARASYMPATHETIC INSTEAD OF SYMPATHETIC SYSTEM.	2012	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
11  992  23 EFFECTS OF HATHA YOGA PRACTICE ON THE HEALTH-RELATED ASPECTS OF PHYSICAL FITNESS. TEN HEALTHY, UNTRAINED VOLUNTEERS (NINE FEMALES AND ONE MALE), RANGING IN AGE FROM 18-27 YEARS, WERE STUDIED TO DETERMINE THE EFFECTS OF HATHA YOGA PRACTICE ON THE HEALTH-RELATED ASPECTS OF PHYSICAL FITNESS, INCLUDING MUSCULAR STRENGTH AND ENDURANCE, FLEXIBILITY, CARDIORESPIRATORY FITNESS, BODY COMPOSITION, AND PULMONARY FUNCTION. SUBJECTS WERE REQUIRED TO ATTEND A MINIMUM OF TWO YOGA CLASSES PER WEEK FOR A TOTAL OF 8 WEEKS. EACH YOGA SESSION CONSISTED OF 10 MINUTES OF PRANAYAMAS (BREATH-CONTROL EXERCISES), 15 MINUTES OF DYNAMIC WARM-UP EXERCISES, 50 MINUTES OF ASANAS (YOGA POSTURES), AND 10 MINUTES OF SUPINE RELAXATION IN SAVASANA (CORPSE POSE). THE SUBJECTS WERE EVALUATED BEFORE AND AFTER THE 8-WEEK TRAINING PROGRAM. ISOKINETIC MUSCULAR STRENGTH FOR ELBOW EXTENSION, ELBOW FLEXION, AND KNEE EXTENSION INCREASED BY 31%, 19%, AND 28% (P<0.05), RESPECTIVELY, WHEREAS ISOMETRIC MUSCULAR ENDURANCE FOR KNEE FLEXION INCREASED 57% (P<0.01). ANKLE FLEXIBILITY, SHOULDER ELEVATION, TRUNK EXTENSION, AND TRUNK FLEXION INCREASED BY 13% (P<0.01), 155% (P<0.001), 188% (P<0.001), AND 14% (P<0.05), RESPECTIVELY. ABSOLUTE AND RELATIVE MAXIMAL OXYGEN UPTAKE INCREASED BY 7% AND 6%, RESPECTIVELY (P<0.01). THESE FINDINGS INDICATE THAT REGULAR HATHA YOGA PRACTICE CAN ELICIT IMPROVEMENTS IN THE HEALTH-RELATED ASPECTS OF PHYSICAL FITNESS. (C)2001 CHF, INC.	2001	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
12  865  23 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	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
13 1441  24 INCREASED HEART RATE VARIABILITY BUT NO EFFECT ON BLOOD PRESSURE FROM 8 WEEKS OF HATHA YOGA - A PILOT STUDY. BACKGROUND: YOGA EXERCISES ARE KNOWN TO DECREASE STRESS AND RESTORE AUTONOMIC BALANCE. YET KNOWLEDGE ABOUT THE PHYSIOLOGICAL EFFECTS OF INVERSION POSTURES IS LIMITED. THIS STUDY AIMED TO INVESTIGATE THE EFFECTS OF INVERSION POSTURES (HEAD BELOW THE HEART) ON BLOOD PRESSURE (BP) AND HEART RATE VARIABILITY (HRV). METHODS: TWELVE HEALTHY WOMEN AND MEN TOOK PART IN AN 8-WEEK YOGA PROGRAM (60 MIN ONCE A WEEK). BP WAS MEASURED WITH AN AUTOMATIC OMRON MX3 OSCILLOMETRIC MONITORING DEVICE AND HRV WITH A HOLTER 24-HOUR ECG AT BASELINE AND 8 WEEKS AFTER THE INTERVENTION. RESULTS: THERE WAS NO SIGNIFICANT EFFECT OF INVERSION POSTURES ON BP. NINE OUT OF 12 PARTICIPANTS SHOWED A SIGNIFICANT INCREASE IN HRV (P < 0.05) AT NIGHT (2 HOURS) ON PNN50% (12.7 +/- 12.5 TO 18.2 +/- 13.3). THERE WERE NO SIGNIFICANT CHANGES IN OTHER HRV MEASURES SUCH AS NN50, LF, HF, LF/HF RATIO, LF NORMALIZED UNITS (N.U.), HF N.U. AND RMSSD. CONCLUSION: EIGHT WEEKS OF HATHA YOGA IMPROVED HRV SIGNIFICANTLY WHICH SUGGESTS AN INCREASED VAGAL TONE AND REDUCED SYMPATHETIC ACTIVITY.	2013	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
14 1026  27 EFFECTS OF YOGA BREATHING EXERCISES ON PULMONARY FUNCTION IN PATIENTS WITH DUCHENNE MUSCULAR DYSTROPHY: AN EXPLORATORY ANALYSIS. OBJECTIVE: DUCHENNE MUSCULAR DYSTROPHY (DMD) IS THE MOST COMMON FORM OF MUSCULAR DYSTROPHY IN CHILDREN, AND CHILDREN WITH DMD DIE PREMATURELY BECAUSE OF RESPIRATORY FAILURE. WE SOUGHT TO DETERMINE THE EFFICACY AND SAFETY OF YOGA BREATHING EXERCISES, AS WELL AS THE EFFECTS OF THOSE EXERCISES ON RESPIRATORY FUNCTION, IN SUCH CHILDREN. METHODS: THIS WAS A PROSPECTIVE OPEN-LABEL STUDY OF PATIENTS WITH A CONFIRMED DIAGNOSIS OF DMD, RECRUITED FROM AMONG THOSE FOLLOWED AT THE NEUROLOGY OUTPATIENT CLINIC OF A UNIVERSITY HOSPITAL IN THE CITY OF SAO PAULO, BRAZIL. PARTICIPANTS WERE TAUGHT HOW TO PERFORM HATHA YOGA BREATHING EXERCISES AND WERE INSTRUCTED TO PERFORM THE EXERCISES THREE TIMES A DAY FOR 10 MONTHS. RESULTS: OF THE 76 PATIENTS WHO ENTERED THE STUDY, 35 DROPPED OUT AND 15 WERE UNABLE TO PERFORM THE BREATHING EXERCISES, 26 HAVING THEREFORE COMPLETED THE STUDY (MEAN AGE, 9.5 +/- 2.3 YEARS; BODY MASS INDEX, 18.2 +/- 3.8 KG/M(2)). THE YOGA BREATHING EXERCISES RESULTED IN A SIGNIFICANT INCREASE IN FVC (% OF PREDICTED: 82.3 +/- 18.6% AT BASELINE VS. 90.3 +/- 22.5% AT 10 MONTHS LATER; P = 0.02) AND FEV1 (% OF PREDICTED: 83.8 +/- 16.6% AT BASELINE VS. 90.1 +/- 17.4% AT 10 MONTHS LATER; P = 0.04). CONCLUSIONS: YOGA BREATHING EXERCISES CAN IMPROVE PULMONARY FUNCTION IN PATIENTS WITH DMD.	2014	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
15 2131  24 THE EFFECTS OF A 6-MONTH MODERATE-INTENSITY HATHA YOGA-BASED TRAINING PROGRAM ON HEALTH-RELATED FITNESS IN MIDDLE-AGED SEDENTARY WOMEN: A RANDOMIZED CONTROLLED STUDY. BACKGROUND: THERE IS PAUCITY OF DATA EXAMINING THE EFFECTIVENESS OF LONG-TERM HATHA YOGA-BASED (HY) PROGRAMS FOCUSED ON THE HEALTH-RELATED FITNESS (H-RF) OF ASYMPTOMATIC, SEDENTARY WOMEN. THE PURPOSE OF THIS STUDY WAS TO EXAMINE THE EFFECTS OF A 6-MONTH HY-BASED TRAINING PROGRAM ON H-RF COMPONENTS IN SEDENTARY MIDDLE-AGED WOMEN. METHODS: EIGHTY SEDENTARY WOMEN WERE RANDOMLY ASSIGNED INTO EITHER THE HY GROUP (HYG) (N.=42) OR THE CONTROL GROUP (CG) (N.=38). THE 6-MONTH HYG PROGRAM INVOLVED A PROGRESSIVE SERIES OF VINYASA FLOW POSES PERFORMED 3 TIMES/WEEK FOR 60 MINUTES (40 MINUTES WITHIN THE EXERCISE ZONE OF 60-75% HR<INF>MAX</INF>). THE CG PARTICIPANTS DID NOT UNDERGO ANY PHYSICAL TRAINING OR EDUCATION. HEALTH-RELATED FITNESS PARAMETERS INCLUDED MEASURES OF PRE- AND POST-TRAINING: BODY COMPOSITION, MUSCULAR STRENGTH AND MAXIMAL VOLUNTARY ISOMETRIC TORQUES OF ELBOW FLEXORS AND KNEE EXTENSORS, CARDIO-RESPIRATORY FITNESS, LOWER BACK AND HAMSTRING FLEXIBILITY AND A STATIC-DYNAMIC BALANCE. RESULTS: TWO-WAY MIXED DESIGN ANOVA REVEALED SIGNIFICANT MAIN EFFECTS FOR ALL THE INDICATORS OF H-RF. TUKEY POST-HOC TESTS CONFIRMED THAT THE HYG DEMONSTRATED SIGNIFICANT IMPROVEMENTS IN EVERY VARIABLE TESTED. EXAMPLES OF THE BENEFITS ACHIEVED INCLUDE (ALL P<.001): AN AVERAGE LOSS OF 1.03 KG AND A 4.82% DECREASE IN BODY FAT, 14.6% AND 13.1% GAINS IN ISOMETRIC STRENGTH OF THE KNEE EXTENSORS AND ELBOW FLEXORS RESPECTIVELY, AN INCREASE IN RELATIVE VO<INF>2MAX</INF> OF 6.1% (33.12+/-5.30 TO 35.14+/-4.82 ML/KG/MIN), A 4-CM OR 10.4% INCREASE IN THEIR MSAR, AND AN AVERAGE IMPROVED BALANCE INDEX OF 5.6 MM/S. REVERSELY, THE CG SHOWED NON-SIGNIFICANT CHANGES IN H-RF VARIABLES (ALL P>0.05; PERCENT RANGE FROM -1.4% TO 1.1%). CONCLUSIONS: BY PARTICIPATING IN A MODERATE-INTENSITY 6-MONTH HY-BASED TRAINING PROGRAM, MIDDLE-AGED WOMEN CAN SIGNIFICANTLY IMPROVE THEIR HR-F STATUS. THE APPLICATION OF PROGRESSIVE TARGET HEART RATE GOALS FACILITATED GREATER THAN EXPECTED IMPROVEMENTS IN CARDIO-RESPIRATORY FITNESS AND IMPROVEMENTS IN BODY COMPOSITION.	2020	
                                                                                                             
16 2863  23 YOGA-BASED GUIDED RELAXATION REDUCES SYMPATHETIC ACTIVITY JUDGED FROM BASELINE LEVELS. 35 MALE VOLUNTEERS WHOSE AGES RANGED FROM 20 TO 46 YEARS WERE STUDIED IN TWO SESSIONS OF YOGA-BASED GUIDED RELAXATION AND SUPINE REST. ASSESSMENTS OF AUTONOMIC VARIABLES WERE MADE FOR 15 SUBJECTS, BEFORE, DURING, AND AFTER THE PRACTICES, WHEREAS OXYGEN CONSUMPTION AND BREATH VOLUME WERE RECORDED FOR 25 SUBJECTS BEFORE AND AFTER BOTH TYPES OF RELAXATION. A SIGNIFICANT DECREASE IN OXYGEN CONSUMPTION AND INCREASE IN BREATH VOLUME WERE RECORDED AFTER GUIDED RELAXATION (PAIRED T TEST). THERE WERE COMPARABLE REDUCTIONS IN HEART RATE AND SKIN CONDUCTANCE DURING BOTH TYPES OF RELAXATION. DURING GUIDED RELAXATION THE POWER OF THE LOW FREQUENCY COMPONENT OF THE HEART-RATE VARIABILITY SPECTRUM REDUCED, WHEREAS THE POWER OF THE HIGH FREQUENCY COMPONENT INCREASED, SUGGESTING REDUCED SYMPATHETIC ACTIVITY. ALSO, SUBJECTS WITH A BASELINE RATIO OF LF/HF > 0.5 SHOWED A SIGNIFICANT DECREASE IN THE RATIO AFTER GUIDED RELAXATION, WHILE SUBJECTS WITH A RATIO < OR = 0.5 AT BASELINE SHOWED NO SUCH CHANGE. THE RESULTS SUGGEST THAT SYMPATHETIC ACTIVITY DECREASED AFTER GUIDED RELAXATION BASED ON YOGA, DEPENDING ON THE BASELINE LEVELS.	2002	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
17 2759  21 YOGA PRACTITIONERS EXHIBIT HIGHER PARASYMPATHETIC ACTIVITY AND BAROREFLEX SENSITIVITY AND BETTER ADAPTABILITY TO 40 MM HG LOWER-BODY NEGATIVE PRESSURE. YOGA HAS BEEN SHOWN TO IMPROVE AUTONOMIC CONDITIONING IN HUMANS, AS EVIDENCED BY THE ENHANCEMENT OF PARASYM-PATHETIC ACTIVITY AND BAROREFLEX SENSITIVITY. THEREFORE, WE HYPOTHESIZED THAT THE EXPERIENCE OF YOGA MAY RESULT IN ADAPTATION TO ACUTE HEMODYNAMIC CHANGES. TO DECIPHER THE LONG-TERM EFFECTS OF YOGA ON CARDIOVASCULAR VARIABILITY, YOGA PRACTITIONERS WERE COMPARED TO YOGA-NAIVE SUBJECTS DURING EXPOSURE TO -40 MM HG LOWER-BODY NEGATIVE PRESSURE (LBNP). A COMPARATIVE STUDY WAS CONDUCTED ON 40 YOGANAIVE SUBJECTS AND 40 YOGA PRACTITIONERS WITH AN AVERAGE AGE OF 31.08 +/- 7.31 YEARS AND 29.93 +/- 7.57 YEARS, RESPECTIVELY. HEART RATE VARIABILITY, BLOOD PRESSURE VARIABILITY, BAROREFLEX SENSITIVITY, AND CORRELATION BETWEEN SYSTOLIC BLOOD PRESSURE AND RR INTERVAL WERE EVALUATED AT REST AND DURING LBNP. IN YOGA PRACTITIONERS, THE HEART RATE WAS LOWER IN SUPINE REST (P = 0.011) AND DURING LBNP (P = 0.043); THE PNN50 MEASURE OF HEART RATE VARIABILITY WAS HIGHER IN SUPINE REST (P = 0.011) AND DURING LBNP (P = 0.034). THE YOGA PRACTITIONERS' STANDARD DEVIATION OF SUCCESSIVE BEAT-TO-BEAT BLOOD PRESSURE INTERVALS OF SYSTOLIC BLOOD PRESSURE VARIABILITY WAS LOWER IN SUPINE REST (P = 0.034) AND DURING LBNP (P = 0.007), WITH HIGHER SEQUENCE BAROREFLEX SENSITIVITY (P = 0.019) AND ~ HIGH-FREQUENCY BAROREFLEX SENSITIVITY. MEAN SYSTOLIC BLOOD PRESSURE AND RR INTERVAL WERE INVERSELY CORRELATED IN THE YOGA GROUP (R = -0.317, P = 0.049). THE YOGA PRACTITIONERS EXHIBITED HIGHER PARASYMPATHETIC ACTIVITY AND BAROREFLEX SENSITIVITY WITH LOWER SYSTOLIC BLOOD PRESSURE VARIABILITY, INDICATING BETTER ADAPTABILITY TO LBNP COMPARED TO THE YOGA-NAIVE GROUP. OUR FINDINGS INDICATE THAT THE YOGA MODULE WAS HELPFUL IN CONDITIONS OF HYPOVOLEMIA IN HEALTHY SUBJECTS; IT IS PROPOSED TO BE BENEFICIAL IN CLINICAL CONDITIONS ASSOCIATED WITH SYMPATHETIC DOMINANCE, IMPAIRED BARORE-FLEX SENSITIVITY, AND ORTHOSTATIC INTOLERANCE.	2021	
                                                                                                                                                                                                                                                               
18  758  18 EFFECT OF SLOW BREATHING ON AUTONOMIC TONE & BAROREFLEX SENSITIVITY IN YOGA PRACTITIONERS. BACKGROUND & OBJECTIVES: SLOW BREATHING INCREASES PARASYMPATHETIC ACTIVITY AND BAROREFLEX SENSITIVITY (BRS) IN HEALTHY INDIVIDUALS, ALSO SIMILARLY OBSERVED IN YOGA PRACTITIONERS. PRANAYAMA WHICH IS AN IMPORTANT COMPONENT OF YOGA WHEN PRACTICED AT A SLOW PACE WAS AT A RESPIRATORY FREQUENCY OF AROUND 0.1 HZ (6 BREATHS/MIN). THEREFORE, IT WAS HYPOTHESIZED THAT YOGA PRACTITIONERS MIGHT HAVE ADAPTED TO SLOW BREATHING. THIS STUDY WAS AIMED TO DECIPHER THE ROLE OF YOGA ON CARDIOVASCULAR VARIABILITY DURING SLOW BREATHING (0.1 HZ) IN YOGA PRACTITIONERS. METHODS: A CROSS-SECTIONAL STUDY WAS UNDERTAKEN IN NAIVE-TO-YOGA INDIVIDUALS (N=40) AND YOGA PRACTITIONERS (N=40) WITH AN AVERAGE AGE OF 31.08 +/- 7.31 AND 29.93 +/- 7.57 YR, RESPECTIVELY. THE ANALYSIS OF HEART RATE VARIABILITY, BLOOD PRESSURE VARIABILITY (BPV) AND BRS DURING SPONTANEOUS AND SLOW BREATHING WAS COMPARED BETWEEN THE TWO GROUPS. RESULTS: DURING SLOW BREATHING, THE HEART RATE (P<0.01) WAS LOWER, RESPIRATORY RATE INTERVAL (P<0.05) AND PNN50 PER CENT (P=0.01) WERE HIGHER, MEAN SYSTOLIC BP (SBP) (P<0.05) AND SDSD (STANDARD DEVIATION OF SUCCESSIVE BEAT TO BEAT SYSTOLIC BLOOD PRESSURE DIFFERENCES) (P<0.01) OF SBP VARIABILITY WERE LOWER WITH SEQUENCE BRS (P<0.001) AND ALPHA LOW FREQUENCY (P<0.01) AND ALPHA HIGH FREQUENCY (P<0.001) OF SPECTRAL BRS WERE HIGHER IN YOGA PRACTITIONERS. INTERPRETATION & CONCLUSIONS: THE PRESENT STUDY INDICATED HIGHER PARASYMPATHETIC ACTIVITY AND BRS WITH LOWER SBP VARIABILITY AT REST AND DURING SLOW BREATHING IN YOGA PRACTITIONERS COMPARED TO NAIVE GROUP. FINDINGS INDICATE THAT THE SHORT-TERM PRACTICE OF SLOW BREATHING COMPLEMENTS THE AUGMENTED PARASYMPATHETIC ACTIVITY AND BRS IN THE YOGA GROUP.	2020	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
19 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	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
20 1558  21 LONG-TERM EFFECTS OF HATHA YOGA ON HEART RATE VARIABILITY IN HEALTHY PRACTITIONERS: POTENTIAL BENEFITS FOR CARDIOVASCULAR RISK REDUCTION. HATHA YOGA IS COMMONLY PRACTICED IN WESTERN COUNTRIES AND IS CLAIMED TO REDUCE RISK OF CARDIOVASCULAR DISEASE. THE PURPOSE OF THIS STUDY WAS TO EVALUATE AND COMPARE TIME-DOMAIN AND FREQUENCY-DOMAIN METRICS OF HEART RATE VARIABILITY (HRV) IN HATHA YOGA PRACTITIONERS AND HEALTHY CONTROLS. THIS CROSS-SECTIONAL STUDY, WHICH WAS CONDUCTED AT A REGIONAL UNIVERSITY AND COMMUNITY WELLNESS CENTER, INCLUDED CONVENIENCE SAMPLING OF 19 HATHA YOGA PRACTITIONERS AND 8 HEALTHY CONTROLS. USING A LEAD II ECG SYSTEM, 10 MINUTES OF ELECTROCARDIOGRAM (ECG) RECORDING WAS COLLECTED FOR EACH PARTICIPANT. ARTIFACT-FREE, 5-MINUTE SIGNALS WERE USED TO DERIVE TIME-DOMAIN AND FREQUENCY-DOMAIN MEASURES OF HRV. THE MEAN DURATION OF HATHA YOGA PRACTICE AMONG PRACTITIONERS WAS 11.47 +/- 8 YEARS. DEMOGRAPHIC AND ANTHROPOMETRIC CHARACTERISTICS DID NOT DIFFER SIGNIFICANTLY BETWEEN GROUPS. COMPARED WITH THE CONTROL GROUP, THE YOGA GROUP HAD SIGNIFICANTLY GREATER MEAN HIGH FREQUENCY (HF) POWER (859.2 +/- 1342.1 VS 175.5 +/- 121.1; P = .04) AND MEAN HF NORMALIZED UNITS (NU) (57.0 +/- 16.6 VS 36.7 +/- 13.4; P = .02) AND A SIGNIFICANTLY LOWER LOW FREQUENCY (LF)/HF RATIO (1.1 +/- 0.5 VS 2.2 +/- 1.1; P = .01). NO SIGNIFICANT INTERGROUP DIFFERENCES WERE OBSERVED FOR LF POWER, LF NU, OR ANY TIME-DOMAIN MEASURES OF HRV. THESE RESULTS LACK GENERALIZABILITY DUE TO SMALL SAMPLE SIZE AND LACK OF BLINDED ASSESSMENT OF OUTCOME MEASURES. HATHA YOGA PRACTITIONERS SHOWED PARASYMPATHETIC PREDOMINANCE COMPARED WITH HEALTHY CONTROLS. ANALYZING FREQUENCY-DOMAIN HRV METRICS ENABLES DETECTING CHANGES IN CARDIAC AUTONOMIC FUNCTION EARLIER THAN BY ANALYSIS OF TIME-DOMAIN METRICS. PARASYMPATHETIC PREDOMINANCE DEMONSTRATED IN THE YOGA GROUP SUGGESTS HATHA YOGA PRACTITIONERS MAY BE AT LOWER RISK FOR STRESS-RELATED COMORBIDITIES.	2021