1  553 135 CORRELATION OF HEART RATE VARIABILITY WITH CAROTID INTIMA MEDIA THICKNESS AFTER 6 MONTH OF YOGA INTERVENTION IN PREDIABETICS. INTRODUCTION: ATHEROSCLEROTIC CAROTID INTIMAMEDIA THICKNESS (CIMT) MAY BE ASSOCIATED WITH ALTERATIONS IN THE AUTONOMIC FUNCTIONS. THE AIM OF THIS STUDY WAS TO INVESTIGATE THE EFFECT OF 6-MONTH YOGA INTERVENTION ON HEART RATE VARIABILITY (HRV) AND CIMT IN ELDERLY SUBJECTS AND THE CORRELATION BETWEEN HRV AND CIMT. METHODOLOGY: THIS WAS A RANDOMIZED CONTROLLED STUDY, IN WHICH A TOTAL OF 250 SUBJECTS WERE ENROLLED. RANDOMIZATION AND ALLOCATION IN YOGA AND CONTROL GROUPS WERE PERFORMED USING COMPUTER-GENERATED RANDOM NUMBERS. THE CIMT WAS DETERMINED BY B-MODE ULTRASONOGRAPHY, AND CARDIAC AUTONOMIC FUNCTION WAS DETERMINED THROUGH FREQUENCY DOMAIN PARAMETER OF HRV MEASURES AT BASELINE AND AFTER 6 MONTHS OF YOGA INTERVENTION. RESULTS: PARTICIPANTS HAD A MEAN AGE OF 45.4 +/- 6.4 YEARS, AND A MEAN CIMT IN CONTROL (0.70 +/- 0.05) AND STUDY GROUP (0.69 +/- 0.073), AND LOW FREQUENCY/HIGH FREQUENCY (LF/HF) RATIO IN CONTROL (2.20 +/- 1.05) AND STUDY GROUP (0.57 +/- 0.54). YOGA GROUP HAD EVIDENCE OF INCREASED VAGAL ACTIVITY IN THE FREQUENCY DOMAIN (HF AND LF/HF RATIO, P < 0.001) WITH RESPECT TO CONTROL GROUP. MOREOVER, A STUDY GROUP SHOWED LOWER INTIMAMEDIA THICKNESS (IMT) THAN CONTROL SUBJECTS (P < 0.01). IN THE WHOLE POPULATION, LF/HF RATIO POSITIVELY AND SIGNIFICANTLY CORRELATED (R = 0.665, P < 0.01) TO IMT. CONCLUSION: THIS STUDY DEMONSTRATED THAT, AFTER YOGA INTERVENTION, LF/HF RATIO IS POSITIVELY CORRELATED WITH CIMT, A PUTATIVE INDEX OF ATHEROSCLEROSIS, CONFIRMING CARDIAC AUTONOMIC NEUROPATHY AS A PART OF THE PATHOPHYSIOLOGICAL PATHWAY FOR ATHEROSCLEROSIS. IT CONFIRMS THAT THE REGULAR YOGA REPRESENTS A VALUABLE STRATEGY TO COUNTER IMPAIRMENTS OF CARDIAC AUTONOMIC ACTIVITY AND ARTERY STRUCTURAL CHANGES.	2021	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
2 1854  46 RANDOMISED CONTROLLED TRIAL OF A 12 WEEK YOGA INTERVENTION ON NEGATIVE AFFECTIVE STATES, CARDIOVASCULAR AND COGNITIVE FUNCTION IN POST-CARDIAC REHABILITATION PATIENTS. BACKGROUND: NEGATIVE AFFECTIVE STATES SUCH AS ANXIETY, DEPRESSION AND STRESS ARE SIGNIFICANT RISK FACTORS FOR CARDIOVASCULAR DISEASE, PARTICULARLY IN CARDIAC AND POST-CARDIAC REHABILITATION POPULATIONS.YOGA IS A BALANCED PRACTICE OF PHYSICAL EXERCISE, BREATHING CONTROL AND MEDITATION THAT CAN REDUCE PSYCHOSOCIAL SYMPTOMS AS WELL AS IMPROVE CARDIOVASCULAR AND COGNITIVE FUNCTION. IT HAS THE POTENTIAL TO POSITIVELY AFFECT MULTIPLE DISEASE PATHWAYS AND MAY PROVE TO BE A PRACTICAL ADJUNCT TO CARDIAC REHABILITATION IN FURTHER REDUCING CARDIAC RISK FACTORS AS WELL AS IMPROVING SELF-EFFICACY AND POST-CARDIAC REHABILITATION ADHERENCE TO HEALTHY LIFESTYLE BEHAVIOURS. METHOD AND DESIGN: THIS IS A PARALLEL ARM, MULTI-CENTRE, RANDOMISED CONTROLLED TRIAL THAT WILL ASSESS THE OUTCOMES OF POST- PHASE 2 CARDIAC REHABILITATION PATIENTS ASSIGNED TO A YOGA INTERVENTION IN COMPARISON TO A NO-TREATMENT WAIT-LIST CONTROL GROUP. PARTICIPANTS RANDOMISED TO THE YOGA GROUP WILL ENGAGE IN A 12 WEEK YOGA PROGRAM COMPRISING OF TWO GROUP BASED SESSIONS AND ONE SELF-ADMINISTERED HOME SESSION EACH WEEK. GROUP BASED SESSIONS WILL BE LED BY AN EXPERIENCED YOGA INSTRUCTOR. THIS WILL INVOLVE TEACHING BEGINNER STUDENTS A HATHA YOGA SEQUENCE THAT INCORPORATES ASANA (POSES AND POSTURES), PRANAYAMA (BREATHING CONTROL) AND MEDITATION. THE PRIMARY OUTCOMES OF THIS STUDY ARE NEGATIVE AFFECTIVE STATES OF ANXIETY, DEPRESSION AND STRESS ASSESSED USING THE DEPRESSION ANXIETY STRESS SCALE. SECONDARY OUTCOMES INCLUDE MEASURES OF QUALITY OF LIFE, AND CARDIOVASCULAR AND COGNITIVE FUNCTION. THE CARDIOVASCULAR OUTCOMES WILL INCLUDE BLOOD PRESSURE, HEART RATE, HEART RATE VARIABILITY, PULSE WAVE VELOCITY, CAROTID INTIMA MEDIA THICKNESS MEASUREMENTS, LIPID/GLUCOSE PROFILES AND C-REACTIVE PROTEIN ASSAYS. ASSESSMENTS WILL BE CONDUCTED PRIOR TO (WEEK 0), MID-WAY THROUGH (WEEK 6) AND FOLLOWING THE INTERVENTION PERIOD (WEEK 12) AS WELL AS AT A FOUR WEEK FOLLOW-UP (WEEK 16). DISCUSSION: THIS STUDY WILL DETERMINE THE EFFECT OF YOGA PRACTICE ON NEGATIVE AFFECTIVE STATES, CARDIOVASCULAR AND COGNITIVE FUNCTION IN POST-PHASE 2 CARDIAC REHABILITATION PATIENTS. THE FINDINGS MAY PROVIDE EVIDENCE TO INCORPORATE YOGA INTO STANDARDISED CARDIAC REHABILITATION PROGRAMS AS A PRACTICAL ADJUNCT TO IMPROVE THE MANAGEMENT OF PSYCHOSOCIAL SYMPTOMS ASSOCIATED WITH CARDIOVASCULAR EVENTS IN ADDITION TO IMPROVING PATIENTS' COGNITIVE AND CARDIOVASCULAR FUNCTIONS. TRIAL REGISTRATION: ACTRN12612000358842.	2014	

3  350  51 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	
                                                                                                                                                                                                                                                                                                                                                              
4 1578  46 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 2731  46 YOGA OFFERS CARDIOVASCULAR PROTECTION IN EARLY POSTMENOPAUSAL WOMEN. CONTEXT: POSTMENOPAUSE, AN ESTROGEN DEFICIENT STATE COMES WITH INCREASED INCIDENCE OF CARDIOVASCULAR DISEASES (CVDS). YOGA HAS BEEN DESCRIBED AS HAVING A BENEFICIAL EFFECT ON HEART RATE VARIABILITY (HRV), A MARKER FOR CARDIAC AUTONOMIC ACTIVITY WHICH CAN ASSESS CARDIOVASCULAR RISK, IN VARIOUS POPULATIONS. AIM: THE AIM OF THE STUDY WAS TO STUDY THE EFFECT OF 3-MONTH LONG YOGA PRACTICE ON HRV IN EARLY POSTMENOPAUSAL WOMEN. SETTINGS AND DESIGN: A PROSPECTIVE LONGITUDINAL STUDY OF 67 WOMEN WITHIN 5 YEARS OF MENOPAUSE BETWEEN 45 AND 60 YEARS OF AGE ATTENDING MENOPAUSE CLINIC OF DEPARTMENT OF GYNAECOLOGY, SUCHETA KRIPLANI HOSPITAL FULFILLING INCLUSION AND EXCLUSION CRITERIA AND CONSENTING WERE ENROLLED FOR THE STUDY. SUBJECTS AND METHODS: HRV OF 37 CASES (YOGA GROUP) AND 30 CONTROLS (NON-YOGA GROUP) WAS RECORDED PRE AND 3-MONTH POSTINTERVENTION. STATISTICAL ANALYSIS USED: GRAPHPAD PRISM VERSION 5 SOFTWARE WAS USED. VALUES ARE A MEAN AND STANDARD ERROR OF MEAN. STATISTICAL SIGNIFICANCE WAS SET UP AT P < 0.05. RESULTS: IN HRV, FREQUENCY DOMAIN ANALYSIS SHOWED A SIGNIFICANT FALL IN LOW FREQUENCY (LF) IN NORMALIZED UNITS (NU) AND LF: HIGH FREQUENCY (HF) RATIO AND SIGNIFICANT RISE IN HF IN NU IN THE YOGA GROUP (DEPICTING PARASYMPATHETIC DOMINANCE) AGAINST A SIGNIFICANT RISE IN LF (NU) AND LF: HF RATIO AND SIGNIFICANT FALL IN HF (NU) IN NON-YOGA GROUP (INDICATING SYMPATHETIC DOMINANCE). TIME DOMAIN ANALYSIS SHOWED A SIGNIFICANT DECREASE IN STANDARD DEVIATION OF NN INTERVALS IN NON-YOGA GROUP AGAINST NONSIGNIFICANT CHANGES IN YOGA GROUP INDICATING DETERIORATION IN PARASYMPATHETIC ACTIVITY IN NON-YOGA GROUP. CONCLUSIONS: THREE-MONTH LONG YOGA PRACTICE IMPROVED HRV IN EARLY POSTMENOPAUSAL WOMEN SIGNIFICANTLY AND HAS THE POTENTIAL TO ATTENUATE THE CVD RISK IN POSTMENOPAUSAL WOMEN.	2018	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
6 2507  43 YOGA BASED CARDIAC REHABILITATION AFTER CORONARY ARTERY BYPASS SURGERY: ONE-YEAR RESULTS ON LVEF, LIPID PROFILE AND PSYCHOLOGICAL STATES--A RANDOMIZED CONTROLLED STUDY. OBJECTIVE: TO COMPARE THE LONG TERM EFFECTS OF YOGA BASED CARDIAC REHABILITATION PROGRAM WITH ONLY PHYSIOTHERAPY BASED PROGRAM AS AN ADD-ON TO CONVENTIONAL REHABILITATION AFTER CORONARY ARTERY BYPASS GRAFTING (CABG) ON RISK FACTORS. METHODS: IN THIS SINGLE BLIND PROSPECTIVE RANDOMIZED PARALLEL TWO ARMED ACTIVE CONTROL STUDY, 1026 PATIENTS POSTED FOR CABG AT NARAYANA HRUDAYALAYA INSTITUTE OF CARDIAC SCIENCES, BENGALURU (INDIA) WERE SCREENED. OF THESE, 250 MALE PARTICIPANTS (35-65 YEARS) WHO SATISFIED THE SELECTION CRITERIA AND CONSENTED WERE RANDOMIZED INTO TWO GROUPS. WITHIN AND BETWEEN GROUP COMPARISONS WERE DONE AT THREE POINTS OF FOLLOW UP (I.E. 6TH WEEK, 6TH MONTH, AND 12TH MONTH) BY USING WILCOXON'S SIGNED RANKS TEST AND MANN WHITNEY U TEST RESPECTIVELY. RESULTS: YOGA GROUP HAD SIGNIFICANTLY (P = 0.001, MANN WHITNEY) BETTER IMPROVEMENT IN LVEF THAN CONTROL GROUP IN THOSE WITH ABNORMAL BASELINE EF (<53%) AFTER 1 YEAR. THERE WAS A BETTER REDUCTION IN BMI IN THE YOGA GROUP (P = 0.038, BETWEEN GROUPS) IN THOSE WITH HIGH BASELINE BMI (>/=23) AFTER 12 MONTHS. YOGA GROUP SHOWED SIGNIFICANT (P = 0.008, WILCOXON'S) REDUCTION IN BLOOD GLUCOSE AT ONE YEAR IN THOSE WITH HIGH BASELINE FBS >/=110 MG/DL. THERE WAS SIGNIFICANTLY BETTER IMPROVEMENT IN YOGA THAN THE CONTROL GROUP IN HDL (P = 0.003), LDL (P = 0.01) AND VLDL (P = 0.03) IN THOSE WITH ABNORMAL BASELINE VALUES. THERE WAS SIGNIFICANTLY BETTER IMPROVEMENT (P = 0.02, BETWEEN GROUPS) IN POSITIVE AFFECT IN YOGA GROUP. WITHIN YOGA GROUP, THERE WAS SIGNIFICANT DECREASE IN PERCEIVED STRESS (P = 0.001), ANXIETY (P = 0.001), DEPRESSION (P = 0.001), AND NEGATIVE AFFECT (P = 0.03) WHILE IN THE CONTROL GROUP THERE WAS REDUCTION (P = 0.003) ONLY IN SCORES ON ANXIETY. CONCLUSION: ADDITION OF YOGA BASED RELAXATION TO CONVENTIONAL POST-CABG CARDIAC REHABILITATION HELPS IN BETTER MANAGEMENT OF RISK FACTORS IN THOSE WITH ABNORMAL BASELINE VALUES AND MAY HELP IN PREVENTING RECURRENCE.	2014	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
7  686  40 EFFECT OF AN OFFICE WORKSITE-BASED YOGA PROGRAM ON HEART RATE VARIABILITY: A RANDOMIZED CONTROLLED TRIAL. BACKGROUND: CHRONIC WORK-RELATED STRESS IS A SIGNIFICANT AND INDEPENDENT RISK FACTOR FOR CARDIOVASCULAR AND METABOLIC DISEASES AND ASSOCIATED MORTALITY, PARTICULARLY WHEN COMPOUNDED BY A SEDENTARY WORK ENVIRONMENT. HEART RATE VARIABILITY (HRV) PROVIDES AN ESTIMATE OF PARASYMPATHETIC AND SYMPATHETIC AUTONOMIC CONTROL, AND CAN SERVE AS A MARKER OF PHYSIOLOGICAL STRESS. HATHA YOGA IS A PHYSICALLY DEMANDING PRACTICE THAT CAN HELP TO REDUCE STRESS; HOWEVER, TIME CONSTRAINTS INCURRED BY WORK AND FAMILY LIFE MAY LIMIT PARTICIPATION. THE PURPOSE OF THE PRESENT STUDY IS TO DETERMINE IF A 10-WEEK, WORKSITE-BASED YOGA PROGRAM DELIVERED DURING LUNCH HOUR CAN IMPROVE RESTING HRV AND RELATED PHYSICAL AND PSYCHOLOGICAL PARAMETERS IN SEDENTARY OFFICE WORKERS. METHODS AND DESIGN: THIS IS A PARALLEL-ARM RCT THAT WILL COMPARE THE OUTCOMES OF PARTICIPANTS ASSIGNED TO THE EXPERIMENTAL TREATMENT GROUP (YOGA) TO THOSE ASSIGNED TO A NO-TREATMENT CONTROL GROUP. PARTICIPANTS RANDOMIZED TO THE EXPERIMENTAL CONDITION WILL ENGAGE IN A 10-WEEK YOGA PROGRAM DELIVERED AT THEIR PLACE OF WORK. THE YOGA SESSIONS WILL BE GROUP-BASED, PRESCRIBED THREE TIMES PER WEEK DURING LUNCH HOUR, AND WILL BE LED BY AN EXPERIENCED YOGA INSTRUCTOR. THE PROGRAM WILL INVOLVE TEACHING BEGINNER STUDENTS SAFELY AND PROGRESSIVELY OVER 10 WEEKS A YOGA SEQUENCE THAT INCORPORATES ASANAS (POSES AND POSTURES), VINYASA (EXERCISES), PRANAYAMA (BREATHING CONTROL) AND MEDITATION. THE PRIMARY OUTCOME OF THIS STUDY IS THE HIGH FREQUENCY (HF) SPECTRAL POWER COMPONENT OF HRV (MEASURED IN ABSOLUTE UNITS; I.E. MS2), A MEASURE OF PARASYMPATHETIC AUTONOMIC CONTROL. SECONDARY OUTCOMES INCLUDE ADDITIONAL FREQUENCY AND TIME DOMAINS OF HRV, AND MEASURES OF PHYSICAL FUNCTIONING AND PSYCHOLOGICAL HEALTH STATUS. MEASURES WILL BE COLLECTED PRIOR TO AND FOLLOWING THE INTERVENTION PERIOD, AND AT 6 MONTHS FOLLOW-UP TO DETERMINE THE EFFECT OF INTERVENTION WITHDRAWAL. DISCUSSION: THIS STUDY WILL DETERMINE THE EFFECT OF WORKSITE-BASED YOGA PRACTICE ON HRV AND PHYSICAL AND PSYCHOLOGICAL HEALTH STATUS. THE FINDINGS MAY ASSIST IN IMPLEMENTING PRACTICAL INTERVENTIONS, SUCH AS YOGA, INTO THE WORKPLACE TO MITIGATE STRESS, ENHANCE HEALTH STATUS AND REDUCE THE RISK OF CARDIOVASCULAR AND METABOLIC DISEASES. TRIAL REGISTRATION: ACTRN12611000536965URL: HTTP://WWW.ANZCTR.ORG.AU/ACTRN12611000536965.ASPX.	2011	
                                                                                                                                                                                 
8  370  41 AUTONOMIC TONE AND BAROREFLEX SENSITIVITY DURING 70 DEGREES HEAD-UP TILT IN YOGA PRACTITIONERS. INTRODUCTION: THE INTERVENTION OF YOGA WAS SHOWN TO IMPROVE THE AUTONOMIC CONDITIONING IN HUMANS EVIDENT FROM THE ENHANCEMENT OF PARASYMPATHETIC ACTIVITY AND BAROREFLEX SENSITIVITY (BRS). FROM THE DOCUMENTED HEALTH BENEFITS OF YOGA, WE HYPOTHESIZED THAT THE EXPERIENCE OF YOGA MAY RESULT IN ADAPTATION TO THE ORTHOSTATIC STRESS DUE TO ENHANCED BRS. AIM: TO DECIPHER THE EFFECTS OF YOGA IN THE MODULATION OF AUTONOMIC FUNCTION DURING ORTHOSTATIC CHALLENGE. MATERIALS AND METHODS: THIS WAS A COMPARATIVE STUDY DESIGN CONDUCTED IN AUTONOMIC FUNCTION TEST LAB, OF THE DEPARTMENT OF PHYSIOLOGY, ALL INDIA INSTITUTE OF MEDICAL SCIENCES, NEW DELHI, INDIA. HEART RATE VARIABILITY (HRV), BLOOD PRESSURE VARIABILITY, AND BRS WERE ANALYZED ON FORTY NAIVE TO YOGA (NY) SUBJECTS AND FORTY YOGA PRACTITIONERS WITH AN AVERAGE AGE OF 31.08 +/- 7.31 YEARS AND 29.93 +/- 7.57 YEARS, RESPECTIVELY. ALL PARTICIPANTS WERE HEALTHY. SEVENTY DEGREES HEAD UP TILT (HUT) WAS USED AS AN INTERVENTION TO EVALUATE THE CARDIOVASCULAR VARIABILITY DURING ORTHOSTATIC CHALLENGE. RESULTS: DURING HUT, THE R-R INTERVAL (P = 0.042), ROOT MEAN SQUARE OF SUCCESIVE R-R INTERVAL DIFFERENCES (RMSSD) (P = 0.039), STANDARD DEVIATION OF INSTANTANEOUS BEAT-TO-BEAT R-R INTERVAL VARIABILITY (SD1) (P = 0.039) OF HRV, AND SEQUENCE BRS (P = 0.017) AND ALPHA LOW FREQUENCY OF SPECTRAL BRS (P = 0.002) WERE HIGHER IN THE YOGA GROUP. THE DELTA DECREASE IN RRI (P = 0.033) AND BRS (P < 0.01) WAS HIGHER IN THE YOGA GROUP THAN THE NY GROUP. CONCLUSION: THE EFFERENT VAGAL ACTIVITY AND BRS WERE HIGHER IN YOGA PRACTITIONERS. THE DELTA CHANGE (DECREASE) IN PARASYMPATHETIC ACTIVITY AND BRS WAS HIGHER, WITH RELATIVELY STABLE SYSTOLIC BLOOD PRESSURE INDICATING AN ADAPTIVE RESPONSE TO ORTHOSTATIC CHALLENGE BY THE YOGA PRACTITIONERS COMPARED TO THE NY GROUP.	2020	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
9 1298  37 HATHA YOGA AND VASCULAR FUNCTION: RESULTS FROM CROSS-SECTIONAL AND INTERVENTIONAL STUDIES. THE AIM OF THIS STUDY WAS TO DETERMINE THE EFFECT OF HATHA YOGA ON ARTERIAL ELASTICITY AND ENDOTHELIAL FUNCTION. FIRST, A CROSS-SECTIONAL STUDY WAS PERFORMED TO DETERMINE WHETHER YOGA PRACTITIONERS WOULD DEMONSTRATE GREATER ARTERIAL COMPLIANCE AND ENDOTHELIUM-DEPENDENT VASODILATION THAN THEIR SEDENTARY PEERS. SECOND, AN INTERVENTION STUDY INVOLVING 13 SEDENTARY MIDDLE-AGED AND OLDER ADULTS (51 +/- 7 YEARS) WAS PERFORMED TO DETERMINE WHETHER 12 WEEKS OF HATHA YOGA WOULD ELICIT INCREASES IN ARTERIAL COMPLIANCE AND ENDOTHELIAL FUNCTION. IN THE CROSS-SECTIONAL STUDY INVOLVING A TOTAL OF 34 SUBJECTS, THERE WERE NO GROUP DIFFERENCES IN BODY FATNESS, BLOOD LIPID AND LIPOPROTEIN CONCENTRATIONS, CAROTID ARTERY COMPLIANCE OR BRACHIAL ARTERY FLOW-MEDIATED DILATION (FMD). HEMOGLOBIN A1C WAS LOWER IN YOGA PRACTITIONERS THAN IN SEDENTARY ADULTS (P < 0.05). TOTAL CHOLESTEROL AND HEMOGLOBIN A1C DECREASED AFTER THE INTERVENTION (P < 0.05) WHILE CAROTID ARTERY COMPLIANCE AND BRACHIAL ARTERY FMD DID NOT CHANGE. THE RESULTS OF BOTH CROSS-SECTIONAL AND INTERVENTIONAL STUDIES INDICATE THAT REGULAR PRACTICE OF HATHA YOGA IS NOT ASSOCIATED WITH IMPROVEMENTS IN VASCULAR FUNCTIONS.	2013	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
10  873  36 EFFECT OF YOGA THERAPY ON HEART RATE, BLOOD PRESSURE AND CARDIAC AUTONOMIC FUNCTION IN HEART FAILURE. BACKGROUND AND OBJECTIVE: IT IS WELL KNOWN THAT A HALL MARK OF HEART FAILURE IS ADVERSE CHANGES IN AUTONOMIC FUNCTION. ELEVATED BLOOD PRESSURE IS A POWERFUL PREDICTOR OF CONGESTIVE HEART FAILURE AND OTHER CARDIOVASCULAR DISEASE (CVD) OUTCOMES. IN THIS STUDY, WE PLANNED TO EXAMINE THE EFFECTS OF A 12 WEEK YOGA THERAPY ON BLOOD PRESSURE, HEART RATE, HEART RATE VARIABILITY, AND RATE PRESSURE PRODUCT (RPP). METHODS: OUT OF 130 HEART FAILURE PATIENTS RECRUITED FOR THE STUDY, 65 PATIENTS WERE RANDOMLY SELECTED TO RECEIVE 12 WEEK YOGA THERAPY ALONG WITH STANDARD MEDICAL THERAPY (YOGA GROUP). OTHER PATIENTS (N=65) RECEIVED ONLY STANDARD MEDICAL THERAPY (CONTROL GROUP). HEART RATE, BLOOD PRESSURE, CARDIAC AUTONOMIC FUNCTION (BY SHORT-TERM HEART-RATE VARIABILITY ANALYSIS) AND MYOCARDIAL OXYGEN CONSUMPTION (BY RPP) WERE ASSESSED BEFORE AND AFTER 12 WEEKS. IN THE YOGA GROUP, 44 PATIENTS AND IN THE CONTROL GROUP, 48 PATIENTS COMPLETED THE STUDY. RESULTS: THERE WAS A SIGNIFICANT DECREASE IN HEART RATE, BLOOD PRESSURE AND RPP IN YOGA GROUP COMPARED TO CONTROL GROUP. ALSO, LFNU AND LF-HF RATIO DECREASED SIGNIFICANTLY AND HFNU INCREASED SIGNIFICANTLY IN YOGA GROUP COMPARED TO CONTROL GROUP. CONCLUSION: TWELVE-WEEK YOGA THERAPY SIGNIFICANTLY IMPROVED THE PARASYMPATHETIC ACTIVITY AND DECREASED THE SYMPATHETIC ACTIVITY IN HEART FAILURE PATIENTS (NYHA I&II).	2014	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
11  451  46 CHANGES IN FATIGUE, AUTONOMIC FUNCTIONS, AND BLOOD BIOMARKERS DUE TO SITTING ISOMETRIC YOGA IN PATIENTS WITH CHRONIC FATIGUE SYNDROME. BACKGROUND: IN A PREVIOUS RANDOMIZED CONTROLLED TRIAL, WE FOUND THAT SITTING ISOMETRIC YOGA IMPROVES FATIGUE IN PATIENTS WITH CHRONIC FATIGUE SYNDROME (CFS) WHO ARE RESISTANT TO CONVENTIONAL THERAPY. THE AIM OF THIS STUDY WAS TO INVESTIGATE POSSIBLE MECHANISMS BEHIND THIS FINDING, FOCUSING ON THE SHORT-TERM FATIGUE-RELIEVING EFFECT, BY COMPARING AUTONOMIC NERVOUS FUNCTION AND BLOOD BIOMARKERS BEFORE AND AFTER A SESSION OF ISOMETRIC YOGA. METHODS: FIFTEEN PATIENTS WITH CFS WHO REMAINED SYMPTOMATIC DESPITE AT LEAST 6 MONTHS OF CONVENTIONAL THERAPY PRACTICED SITTING ISOMETRIC YOGA (BIWEEKLY 20 MIN PRACTICE WITH A YOGA INSTRUCTOR AND DAILY HOME PRACTICE) FOR EIGHT WEEKS. ACUTE EFFECTS OF SITTING ISOMETRIC YOGA ON FATIGUE, AUTONOMIC FUNCTION, AND BLOOD BIOMARKERS WERE INVESTIGATED AFTER THE FINAL SESSION WITH AN INSTRUCTOR. THE EFFECT OF A SINGLE SESSION OF SITTING ISOMETRIC YOGA ON FATIGUE WAS ASSESSED BY THE PROFILE OF MOOD STATUS (POMS) QUESTIONNAIRE IMMEDIATELY BEFORE AND AFTER THE SESSION. AUTONOMIC NERVOUS FUNCTION (HEART RATE (HR) VARIABILITY) AND BLOOD BIOMARKERS (CORTISOL, DHEA-S, TNF-ALPHA, IL-6, IFN-GAMMA, IFN-ALPHA, PROLACTIN, CARNITINE, TGF-BETA1, BDNF, MHPG, AND HVA) WERE COMPARED BEFORE AND AFTER THE SESSION. RESULTS: SITTING ISOMETRIC YOGA SIGNIFICANTLY REDUCED THE POMS FATIGUE SCORE (P < 0.01) AND INCREASED THE VIGOR SCORE (P < 0.01). IT ALSO REDUCED HR (P < 0.05) AND INCREASED THE HIGH FREQUENCY POWER (P < 0.05) OF HR VARIABILITY. SITTING ISOMETRIC YOGA INCREASED SERUM LEVELS OF DHEA-S (P < 0.05), REDUCED LEVELS OF CORTISOL (P < 0.05) AND TNF-ALPHA (P < 0.05), AND HAD A TENDENCY TO REDUCE SERUM LEVELS OF PROLACTIN (P < 0.1). DECREASES IN FATIGUE SCORES CORRELATED WITH CHANGES IN PLASMA LEVELS OF TGF-BETA1 AND BDNF. IN CONTRAST, INCREASED VIGOR POSITIVELY CORRELATED WITH HVA. CONCLUSIONS: A SINGLE SESSION OF SITTING ISOMETRIC YOGA REDUCED FATIGUE AND INCREASED VIGOR IN PATIENTS WITH CFS. YOGA ALSO INCREASED VAGAL NERVE FUNCTION AND CHANGED BLOOD BIOMARKERS IN A PATTERN THAT SUGGESTED ANTI-STRESS AND ANTI-INFLAMMATORY EFFECTS. THESE CHANGES APPEAR TO BE RELATED TO THE SHORT-TERM FATIGUE-RELIEVING EFFECT OF SITTING ISOMETRIC YOGA IN PATIENTS WITH CFS. FURTHERMORE, DOPAMINERGIC NERVOUS SYSTEM ACTIVATION MIGHT ACCOUNT FOR SITTING ISOMETRIC YOGA-INDUCED INCREASES IN ENERGY IN THIS PATIENT POPULATION. TRIAL REGISTRATION: UNIVERSITY HOSPITAL MEDICAL INFORMATION NETWORK (UMIN CTR) UMIN000009646. REGISTERED DEC 27, 2012.	2018	
                          
12  758  36 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	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
13 1318  47 HEART RATE VARIABILITY IN CHRONIC LOW BACK PAIN PATIENTS RANDOMIZED TO YOGA OR STANDARD CARE. BACKGROUND: CHRONIC PAIN CAN ALTER THE AUTONOMIC BALANCE WITH INCREASED SYMPATHETIC ACTIVITY REFLECTED IN ALTERED HEART RATE VARIABILITY (HRV). IT HAS BEEN PROPOSED THAT YOGA CAN BE USEFUL TO CORRECT THE AUTONOMIC IMBALANCE IN PATIENTS WITH CHRONIC PAIN WHO HAVE REDUCED HRV. METHODS AND DESIGNS: IN THE PRESENT RANDOMIZED CONTROLLED TRIAL 62 PATIENTS WITH CHRONIC LOW BACK PAIN ASSOCIATED WITH ALTERED ALIGNMENT OF INTERVERTEBRAL DISCS (AGED BETWEEN 20 AND 45 YEARS, 32 MALES) WERE RANDOMIZED TO 2 GROUPS. ONE GROUP RECEIVED YOGA FOR 3 MONTHS WHILE THE OTHER GROUP CARRIED OUT STANDARD MEDICAL CARE BASED ON THE PHYSICIAN'S ADVICE. THE DURATION WAS THE SAME, I.E., 3 MONTHS. THE HEART RATE VARIABILITY AND RATE OF RESPIRATION WERE ASSESSED AT BASELINE AND AT THE END OF 3 MONTHS. RESULTS: THERE WAS A SIGNIFICANT DIFFERENCE IN THE BASELINE (PRE) VALUES BETWEEN GROUPS (P = 0.008) FOR RESPIRATION RATE WHICH WAS HIGHER IN THE YOGA GROUP. THE CHANGES REPORTED BELOW ARE PRE-POST COMPARISONS WITHIN EACH GROUP. THE YOGA GROUP SHOWED A SIGNIFICANT (P < 0.05; REPEATED MEASURES ANOVA, POST-HOC ANALYSES) DECREASE IN THE LF POWER OF HRV, RATE OF RESPIRATION AND A SIGNIFICANT INCREASE IN THE HF POWER OF HRV AND IN THE PNN50. CONCLUSION: THE RESULTS SUGGEST THAT YOGA PRACTICE CAN SHIFT THE AUTONOMIC BALANCE TOWARDS VAGAL DOMINANCE IN PATIENTS WITH CHRONIC LOW BACK PAIN ASSOCIATED WITH ALTERED ALIGNMENT OF INTERVERTEBRAL DISCS. TRIAL REGISTRATION: THE STUDY IS REGISTERED WITH THE CLINICAL TRIALS REGISTRY OF INDIA ( CTRI/2012/11/003094 ) AND CAN BE ACCESSED AT.	2016	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
14  687  47 EFFECT OF AN OFFICE WORKSITE-BASED YOGA PROGRAM ON HEART RATE VARIABILITY: OUTCOMES OF A RANDOMIZED CONTROLLED TRIAL. BACKGROUND: CHRONIC WORK-RELATED STRESS IS AN INDEPENDENT RISK FACTOR FOR CARDIOMETABOLIC DISEASES AND ASSOCIATED MORTALITY, PARTICULARLY WHEN COMPOUNDED BY A SEDENTARY WORK ENVIRONMENT. THE PURPOSE OF THIS STUDY WAS TO DETERMINE IF AN OFFICE WORKSITE-BASED HATHA YOGA PROGRAM COULD IMPROVE PHYSIOLOGICAL STRESS, EVALUATED VIA HEART RATE VARIABILITY (HRV), AND ASSOCIATED HEALTH-RELATED OUTCOMES IN A COHORT OF OFFICE WORKERS. METHODS: THIRTY-SEVEN ADULTS EMPLOYED IN UNIVERSITY-BASED OFFICE POSITIONS WERE RANDOMIZED UPON THE COMPLETION OF BASELINE TESTING TO AN EXPERIMENTAL OR CONTROL GROUP. THE EXPERIMENTAL GROUP COMPLETED A 10-WEEK YOGA PROGRAM PRESCRIBED THREE SESSIONS PER WEEK DURING LUNCH HOUR (50 MIN PER SESSION). AN EXPERIENCED INSTRUCTOR LED THE SESSIONS, WHICH EMPHASIZED ASANAS (POSTURES) AND VINYASA (EXERCISES). THE PRIMARY OUTCOME WAS THE HIGH FREQUENCY (HF) POWER COMPONENT OF HRV. SECONDARY OUTCOMES INCLUDED ADDITIONAL HRV PARAMETERS, MUSCULOSKELETAL FITNESS (I.E. PUSH-UP, SIDE-BRIDGE, AND SIT & REACH TESTS) AND PSYCHOLOGICAL INDICES (I.E. STATE AND TRAIT ANXIETY, QUALITY OF LIFE AND JOB SATISFACTION). RESULTS: ALL MEASURES OF HRV FAILED TO CHANGE IN THE EXPERIMENTAL GROUP VERSUS THE CONTROL GROUP, EXCEPT THAT THE EXPERIMENTAL GROUP SIGNIFICANTLY INCREASED LF:HF (P = 0.04) AND REDUCED PNN50 (P = 0.04) VERSUS CONTROL, CONTRARY TO OUR HYPOTHESES. FLEXIBILITY, EVALUATED VIA SIT & REACH TEST INCREASED IN THE EXPERIMENTAL GROUP VERSUS THE CONTROL GROUP (P < 0.001). NO OTHER ADAPTATIONS WERE NOTED. POST HOC ANALYSIS COMPARING PARTICIPANTS WHO COMPLETED >/=70% OF YOGA SESSIONS (N = 11) TO CONTROL (N = 19) YIELDED THE SAME FINDINGS, EXCEPT THAT THE HIGH ADHERERS ALSO REDUCED STATE ANXIETY (P = 0.02) AND RMSSD (P = 0.05), AND TENDED TO IMPROVE THE PUSH-UP TEST (P = 0.07) VERSUS CONTROL. CONCLUSIONS: A 10-WEEK HATHA YOGA INTERVENTION DELIVERED AT THE OFFICE WORKSITE DURING LUNCH HOUR DID NOT IMPROVE HF POWER OR OTHER HRV PARAMETERS. HOWEVER, IMPROVEMENTS IN FLEXIBILITY, STATE ANXIETY AND MUSCULOSKELETAL FITNESS WERE NOTED WITH HIGH ADHERENCE. FUTURE INVESTIGATIONS SHOULD INCORPORATE STRATEGIES TO PROMOTE ADHERENCE, INVOLVE MORE FREQUENT AND LONGER DURATIONS OF YOGA TRAINING, AND ENROL COHORTS WHO SUFFER FROM HIGHER LEVELS OF WORK-RELATED STRESS. TRIAL REGISTRATION: ACTRN12611000536965.	2013	
                                                                                                                                                                                          
15  780  51 EFFECT OF YOGA AS AN ADD-ON THERAPY IN THE MODULATION OF HEART RATE VARIABILITY IN CHILDREN WITH DUCHENNE MUSCULAR DYSTROPHY. BACKGROUND: DUCHENE MUSCULAR DYSTROPHY (DMD) IS A PROGRESSIVE MUSCULAR DISORDER. CARDIAC DISORDER IS THE SECOND-MOST COMMON CAUSE OF DEATH IN CHILDREN WITH DMD, WITH 10%-20% OF THEM DYING OF CARDIAC FAILURE. HEART RATE VARIABILITY (HRV) IS SHOWN TO BE A PREDICTOR OF CARDIO-AUTONOMIC FUNCTION. PHYSIOTHERAPY (PT) IS ADVISED FOR THESE CHILDREN AS A REGULAR TREATMENT FOR MAINTAINING THEIR FUNCTIONAL STATUS. THE EFFECT OF YOGIC PRACTICES ON THE CARDIO-AUTONOMIC FUNCTIONS HAS BEEN DEMONSTRATED IN VARIOUS NEUROLOGICAL CONDITIONS AND MAY PROVE BENEFICIAL IN DMD. MATERIALS AND METHODS: IN THIS STUDY, 124 PATIENTS WITH DMD WERE RANDOMIZED TO PT ALONE OR PT WITH YOGA INTERVENTION. HOME-BASED PT AND YOGA WERE ADVISED. ADHERENCE WAS SERIALLY ASSESSED AT A FOLLOW-UP INTERVAL OF 3 MONTHS. ERROR-FREE, ELECTROCARDIOGRAM WAS RECORDED IN ALL PATIENTS AT REST IN THE SUPINE POSITION. HRV PARAMETERS WERE COMPUTED IN TIME AND FREQUENCY DOMAINS. HRV WAS RECORDED AT BASELINE AND AT AN INTERVAL OF 3 MONTHS UP TO 1 YEAR. REPEATED-MEASURES ANOVA WAS USED TO ANALYZE LONGITUDINAL FOLLOW-UP AND LEAST SIGNIFICANT DIFFERENCE FOR POST HOC ANALYSIS AND P < 0.05 WAS CONSIDERED STATISTICALLY SIGNIFICANT. RESULTS: IN OUR STUDY, WITH PT PROTOCOL, STANDARD DEVIATION OF NN, ROOT OF SQUARE MEAN OF SUCCESSIVE NN, TOTAL POWER, LOW FREQUENCY, HIGH-FREQUENCY NORMALIZED UNITS (HFNU), AND SYMPATHOVAGAL BALANCE IMPROVED AT VARYING TIME POINTS AND THE IMPROVEMENT LASTED UP FOR 6-9 MONTHS, WHEREAS PT AND YOGA PROTOCOL SHOWED AN IMPROVEMENT IN HFNU DURING THE LAST 3 MONTHS OF THE STUDY PERIOD AND ALL THE OTHER PARAMETERS WERE STABLE UP TO 1 YEAR. THUS, IT IS EVIDENT THAT BOTH THE GROUPS IMPROVED CARDIAC FUNCTIONS IN DMD. HOWEVER, NO SIGNIFICANT DIFFERENCE WAS NOTED IN THE CHANGES OBSERVED BETWEEN THE GROUPS. CONCLUSION: THE INTENSE PT AND PT WITH YOGA, PARTICULARLY HOME-BASED PROGRAM, IS INDEED BENEFICIAL AS A THERAPEUTIC STRATEGY IN DMD CHILDREN TO MAINTAIN AND/OR TO SUSTAIN HRV IN DMD.	2019	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
16  297  42 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	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
17 2775  51 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	
                                                                                                                                                                                                                                                                                                                    
18 1441  43 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	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
19  324  30 ANTHROPOMETRIC, BIOCHEMICAL AND CLINICAL PARAMETERS IN CLIMACTERIC YOGA PRACTITIONERS. OBJECTIVE: THIS STUDY AIMED TO EVALUATE ANTHROPOMETRIC, BIOCHEMICAL AND CLINICAL PARAMETERS IN CLIMACTERIC YOGA PRACTITIONERS. METHODS: THIS STUDY INVESTIGATED 108 CLIMACTERIC WOMEN. WE RECRUITED 28 WOMEN BETWEEN 40 AND 65 YEARS OLD WHO STARTED YOGA PRACTICES IN PREMENOPAUSE AND HAD ALREADY PRACTICED FOR AT LEAST 5 YEARS. AS CONTROLS, WE SELECTED 30 PHYSICAL ACTIVITY (PA) PRACTITIONERS WHO HAD PRACTICED FOR AT LEAST 5 YEARS AND 50 SEDENTARY WOMEN IN THE SAME AGE RANGE. WE CONDUCED ANTHROPOMETRIC, BIOCHEMICAL AND BLOOD PRESSURE MEASUREMENTS. RESULTS: THE YOGA GROUP HAD SIGNIFICANTLY LOWER FASTING BLOOD GLUCOSE THAN THE PA PRACTITIONERS AND SEDENTARY WOMEN. YOGA PRACTITIONERS ALSO HAD LOWER WEIGHT, BODY MASS INDEX, WAIST CIRCUMFERENCE, BODY FAT PERCENTAGE AND WAIST-TO-HEIGHT RATIO; HIGHER LEVELS OF HIGH-DENSITY LIPOPROTEIN CHOLESTEROL; LOWER LEVELS OF TRIGLYCERIDES, INSULIN, HOMEOSTASIS MODEL ASSESSMENT OF INSULIN RESISTANCE, URIC ACID, APOLIPOPROTEIN B AND HIGH-SENSITIVITY C-REACTIVE PROTEIN; AND LOWER FREQUENCY OF METABOLIC SYNDROME, LIPID ACCUMULATION PRODUCT, VISCERAL ADIPOSITY INDEX AND SYSTOLIC BLOOD PRESSURE THAN THE SEDENTARY WOMEN. CONCLUSION: YOGA PRACTITIONERS HAD LOWER GLUCOSE SERUM CONCENTRATIONS THAN THE PA PRACTITIONERS AND SEDENTARY WOMEN. OVERALL, THE YOGA GROUP ALSO HAD BETTER ANTHROPOMETRIC, BIOCHEMICAL AND CLINICAL VARIABLES THAN THE OTHER GROUPS. ALTHOUGH FURTHER INVESTIGATION IS REQUIRED, YOGA PRACTICE IN PREMENOPAUSE SEEMS TO BE BENEFICIAL FOR WOMEN WHEN THEY REACH MENOPAUSE.	2022	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
20  287  32 ADJUNCT YOGA THERAPY: INFLUENCE ON HEART RATE VARIABILITY IN MAJOR DEPRESSIVE DISORDER - A RANDOMIZED CONTROLLED TRIAL. HRV IS INVERSELY PROPORTIONAL TO SEVERITY OF DEPRESSION. EFFECT OF 12-WEEKS ADJUNCT YOGA THERAPY ON HRV IN PATIENTS WITH MDD WAS ASSESSED THROUGH A RANDOMIZED CONTROLLED TRIAL. SIXTY-EIGHT SUBJECTS (40 FEMALES) WITH MEAN AGE 31.58 +/- 8.79 YEARS, SCORING >/= 18 ON HDRS WERE RANDOMIZED TO EITHER (YG; N = 35) OR (WG; N = 33). LINEAR MIXED MODEL ANALYSIS SHOWED NO SIGNIFICANT DIFFERENCE BETWEEN GROUPS. ON COMPARING CHANGE IN MEAN PERCENTAGE, SUBSTANTIAL MORE DECREASE COULD BE ELICITED ONLY FOR LF/HF RATIO IN YG COMPARED TO WG, WHILE BEING COMPARABLE FOR OTHER VARIABLES ACROSS THE GROUPS. FINDINGS SUGGEST YOGA THERAPY MAY HELP IN BRINGING PARASYMPATHETIC DOMINANCE IN PATIENTS WITH MDD.	2021