1 2817 137 YOGA TRAINING IMPROVES QUALITY OF LIFE IN WOMEN WITH ASTHMA. OBJECTIVES: INDIVIDUALS WITH ASTHMA FREQUENTLY SUFFER WITH A DECREASE IN QUALITY OF LIFE. YOGA HAS BEEN SHOWN TO IMPROVE AUTONOMIC FUNCTION IN THE HEALTHY POPULATION AND HAS BEEN USED AS AN ALTERNATIVE THERAPY TO HELP IMPROVE SYMPTOMS ASSOCIATED WITH VARIOUS DISEASES. PURPOSE: THE PURPOSE OF THIS STUDY WAS TO ASSESS WHETHER 10 WEEKS OF YOGA TRAINING CAN IMPROVE QUALITY OF LIFE AND HEART RATE VARIABILITY (HRV) IN PATIENTS WITH ASTHMA. DESIGN: NINETEEN (19) FEMALES WERE RANDOMLY ASSIGNED TO A YOGA GROUP OR A CONTROL GROUP FOR A 10-WEEK INTERVENTION WHILE STILL FOLLOWING GUIDELINES ESTABLISHED BY THEIR PHYSICIAN. ALL SUBJECTS ANSWERED THE ST. GEORGE'S RESPIRATORY QUESTIONNAIRE (SGRQ) TO ASSESS QUALITY OF LIFE AND PERFORMED AN ISOMETRIC HANDGRIP EXERCISE TEST TO ASSESS HRV. RESULTS: BASED ON THE SGRQ, SIGNIFICANT IMPROVEMENTS (45%, P < 0.05) IN QUALITY OF LIFE WERE OBSERVED WITH THE YOGA TRAINING, WHILE NO CHANGES WERE FOUND IN THE CONTROL GROUP. RESTING HEMODYNAMIC MEASURES IMPROVED SIGNIFICANTLY IN THE YOGA GROUP COMPARED TO THE CONTROL GROUP (P < 0.05). THE YOGA GROUP DECREASED PARASYMPATHETIC MODULATION (HFNU [NORMALIZED UNITS]) PRE- TO POSTINTERVENTION (0.45 +/- 0.60 TO 0.35 +/- 0.06 NU, P<0.05, RESPECTIVELY) IN RESPONSE TO THE ISOMETRIC FOREARM EXERCISE (IFE), WHEREAS THE CONTROL GROUP DID NOT CHANGE. ADDITIONALLY, THE YOGA GROUP INCREASED SYMPATHETIC (LFNU) (PRE 0.47 +/- 0.07 TO POST 0.60 +/- 0.07 NU, P < 0.05) AND SYMPATHOVAGAL MODULATION (LOGLF/HF) (PRE 4.61 +/- 0.39 TO POST 5.31 +/- 0.44, P < 0.05, RESPECTIVELY) DURING IFE WITH NO CHANGE IN THE CONTROL GROUP. CONCLUSIONS: YOGA TRAINING IMPROVED QUALITY OF LIFE IN WOMEN WITH MILD-TO-MODERATE ASTHMA AND RESULTED IN DECREASED PARASYMPATHETIC AND INCREASED SYMPATHETIC MODULATION IN RESPONSE TO AN IFE. 2012 2 1027 43 EFFECTS OF YOGA BREATHING PRACTICE ON HEART RATE VARIABILITY IN HEALTHY ADOLESCENTS: A RANDOMIZED CONTROLLED TRIAL. BACKGROUND: THIS STUDY WAS CONDUCTED AMONG HEALTHY ADOLESCENTS TO ASSESS THE EFFECTS OF A YOGA BREATHING PRACTICE (BHRAMARI PRANAYAMA, BHR.P) TOWARDS CARDIAC AUTONOMIC FUNCTION USING HEART RATE VARIABILITY (HRV) PARAMETERS. METHODS: OF THE 730 ELIGIBLE SUBJECTS SCREENED, 520 HEALTHY ADOLESCENTS WHO MET THE INCLUSION AND EXCLUSION CRITERIA WERE RANDOMLY ASSIGNED TO EITHER YOGA BREATHING GROUP (N=260) OR CONTROL GROUP (N=260). THE YOGA BREATHING GROUP PRACTICED BHR.P. FIVE DAYS A WEEK FOR A DURATION OF SIX MONTHS WHILE THE CONTROL GROUP CONTINUED WITH THEIR DAILY ROUTINE WITHOUT ANY INTERVENTION. OUTCOME MEASURES WERE TIME AND FREQUENCY DOMAIN OF HRV IN BOTH GROUPS WHICH WERE ASSESSED BEFORE AND AFTER THE INTERVENTION USING LEAD II ECG. LINEAR MODELS WERE USED IN THE ANALYSIS OF SHORT TERM HRV. RESULTS: AFTER 6 MONTHS OF YOGA BREATHING, THE TIME DOMAIN PARAMETERS OF SHORT TERM HRV SHOWED SIGNIFICANT (P<0.05) IMPROVEMENT TOWARDS THE PARASYMPATHETIC DOMAIN. FREQUENCY DOMAIN PARAMETERS ALSO SHOWED THE SAME DIRECTION OF CHANGES. IN CONTRAST, CONTROL GROUP SUBJECTS SHOWED A TREND TOWARDS A SYMPATHETIC DOMAIN. CONCLUSION: THE PRESENT STUDY SHOWED A POSITIVE SHIFT IN CARDIAC AUTONOMIC MODULATION TOWARDS PARASYMPATHETIC PREDOMINANCE AFTER 6 MONTHS OF YOGA BREATHING PRACTICE AMONG APPARENTLY HEALTHY ADOLESCENTS. 2020 3 748 29 EFFECT OF SAHAJA YOGA MEDITATION ON QUALITY OF LIFE, ANXIETY, AND BLOOD PRESSURE CONTROL. OBJECTIVE: THE PRESENT STUDY INVESTIGATES THE EFFECT OF SAHAJA YOGA MEDITATION ON QUALITY OF LIFE, ANXIETY, AND BLOOD PRESSURE CONTROL. DESIGN: THE PROSPECTIVE OBSERVATIONAL COHORT STUDY ENROLLED TWO STUDY GROUPS: THOSE RECEIVING TREATMENT FROM THE INTERNATIONAL SAHAJA YOGA RESEARCH AND HEALTH CENTER (MEDITATION GROUP) AND THOSE RECEIVING TREATMENT FROM THE MAHATMA GANDHI MISSION HOSPITAL (CONTROL GROUP). RESEARCHERS MEASURED QUALITY OF LIFE, ANXIETY, AND BLOOD PRESSURE BEFORE AND AFTER TREATMENT. RESULTS: SIXTY-SEVEN (67) PARTICIPANTS IN THE MEDITATION GROUP AND 62 PARTICIPANTS IN THE CONTROL GROUP COMPLETED THE STUDY. THE TWO GROUPS WERE COMPARABLE IN DEMOGRAPHIC AND CLINICAL CHARACTERISTICS. AT BASELINE, THE MEDITATION GROUP HAD HIGHER QUALITY OF LIFE (P<0.001) THAN CONTROLS BUT SIMILAR ANXIETY LEVEL (P=0.74) TO CONTROLS. WITHIN-GROUP PRE- VERSUS POST-TREATMENT COMPARISONS SHOWED SIGNIFICANT IMPROVEMENT IN QUALITY OF LIFE, ANXIETY, AND BLOOD PRESSURE IN THE MEDITATION GROUP (P<0.001), WHILE IN CONTROLS, QUALITY OF LIFE DETERIORATED AND THERE WAS NO IMPROVEMENT IN BLOOD PRESSURE. THE IMPROVEMENT IN QUALITY OF LIFE, ANXIETY REDUCTION, AND BLOOD PRESSURE CONTROL WAS GREATER IN THE MEDITATION GROUP. THE BENEFICIAL EFFECT OF MEDITATION REMAINED SIGNIFICANT AFTER ADJUSTING FOR CONFOUNDERS. CONCLUSIONS: MEDITATION TREATMENT WAS ASSOCIATED WITH SIGNIFICANT IMPROVEMENTS IN QUALITY OF LIFE, ANXIETY REDUCTION, AND BLOOD PRESSURE CONTROL. 2012 4 1637 35 MODULATION OF CARDIAC AUTONOMIC BALANCE WITH ADJUVANT YOGA THERAPY IN PATIENTS WITH REFRACTORY EPILEPSY. THE PRACTICE OF YOGA REGULATES BODY PHYSIOLOGY THROUGH CONTROL OF POSTURE, BREATHING, AND MEDITATION. EFFECTS OF YOGA ON AUTONOMIC FUNCTIONS OF PATIENTS WITH REFRACTORY EPILEPSY, AS QUANTIFIED BY STANDARDIZED AUTONOMIC FUNCTION TESTS (AFTS), WERE DETERMINED. THE YOGA GROUP (N=18) RECEIVED SUPERVISED TRAINING IN YOGA, AND THE EXERCISE GROUP (N=16) PRACTICED SIMPLE ROUTINE EXERCISES. AFTS WERE REPEATED AFTER 10 WEEKS OF DAILY SESSIONS. DATA WERE COMPARED WITH THOSE OF HEALTHY VOLUNTEERS (N=142). THE YOGA GROUP SHOWED SIGNIFICANT IMPROVEMENT IN PARASYMPATHETIC PARAMETERS AND A DECREASE IN SEIZURE FREQUENCY SCORES. THERE WAS NO IMPROVEMENT IN BLOOD PRESSURE PARAMETERS IN EITHER GROUP. TWO PATIENTS IN THE YOGA GROUP ACHIEVED NORMAL AUTONOMIC FUNCTIONS AT THE END OF 10 WEEKS OF THERAPY, WHEREAS THERE WERE NO CHANGES IN THE EXERCISE GROUP. THE DATA SUGGEST THAT YOGA MAY HAVE A ROLE AS AN ADJUVANT THERAPY IN THE MANAGEMENT OF AUTONOMIC DYSFUNCTION IN PATIENTS WITH REFRACTORY EPILEPSY. 2008 5 2109 35 THE EFFECT OF YOGA ON RESPIRATORY FUNCTIONS, SYMPTOM CONTROL AND LIFE QUALITY OF ASTHMA PATIENTS: A RANDOMIZED CONTROLLED STUDY. AIM: THIS STUDY WAS CONDUCTED TO FIND OUT THE EFFECT OF YOGA APPLIED TO ASTHMA PATIENTS ON THE PATIENTS' RESPIRATORY FUNCTIONS, SYMPTOM CONTROL AND QUALITY OF LIFE. METHODS: THE SAMPLE OF THE STUDY CONSISTED OF A TOTAL OF RANDOMLY CHOSEN 112 ASTHMA PATIENTS, 56 IN THE EXPERIMENTAL GROUP AND 56 IN THE CONTROL GROUP, WHO MET THE RESEARCH CRITERIA AND WHO AGREED TO PARTICIPATE IN THE STUDY. A TOTAL OF 12 YOGA SESSIONS, 2 SESSIONS A WEEK FOR 6 WEEKS, WAS APPLIED TO THE PATIENTS IN THE EXPERIMENTAL GROUP. THE PATIENTS IN THE CONTROL GROUP DID NOT RECEIVE ANY INTERVENTION. RESULTS: IN THE INTRAGROUP COMPARISON OF AVERAGE PRE-TEST AND POST-TEST SCORES OF RESPIRATORY FUNCTION AND ASTHMA CONTROL TEST (ACT) AND ASTHMA QUALITY OF LIFE SCALE (AQLQ) TOTAL AND SUB-DIMENSION SCORES OF THE PATIENTS IN THE EXPERIMENTAL AND CONTROL GROUP, THE DIFFERENCE WAS FOUND TO BE STATISTICALLY SIGNIFICANT (P<0.05). IN ADDITION, POST-TEST SCORE AVERAGES WERE FOUND TO INCREASE IN THE EXPERIMENTAL GROUP, WHILE THEY WERE FOUND TO DECREASE IN THE CONTROL GROUP. CONCLUSION: IT WAS FOUND THAT YOGA INFLUENCED RESPIRATORY FUNCTIONS, SYMPTOM CONTROL AND QUALITY OF LIFE POSITIVELY IN ASTHMA PATIENTS. THE CLINICAL TRIAL REGISTRATION NUMBER IS NCT04107415/HTTPS://CLINICALTRIALS.GOV/CT2/SHOW/NCT04107415. 2020 6 772 41 EFFECT OF YOGA AND EXERCISE ON GLYCEMIC CONTROL AND PSYCHOSOCIAL PARAMETERS IN TYPE 2 DIABETES MELLITUS: A RANDOMIZED CONTROLLED STUDY. CONTEXT BACKGROUND: TYPE 2 DIABETES HAS BEEN STRONGLY ASSOCIATED WITH PSYCHOSOCIAL FACTORS SUCH AS STRESS, ANXIETY, DEPRESSION, AND QUALITY OF LIFE (QOL). THERE IS NOT MUCH EVIDENCE WHETHER YOGA CAN IMPROVE THESE FACTORS AND MOTIVATE INDIVIDUALS TO ENGAGE IN ACTIVE LIFESTYLE. AIMS: THIS STUDY AIMS TO EVALUATE THE EFFECT OF YOGA AND EXERCISE OVER GLYCEMIC CONTROL, ANXIETY, DEPRESSION, EXERCISE SELF-EFFICACY (ESE), AND QOL AFTER 3-MONTH PROGRAM. METHODS: TWO HUNDRED AND TWENTY-SEVEN INDIVIDUALS WERE RANDOMLY ALLOCATED TO YOGA GROUP (YG) AND EXERCISE GROUP. YG PRACTICED YOGA FOR 2 WEEKS UNDER SUPERVISION AND THEN CARRIED OUT PRACTICE AT HOME FOR 3 MONTHS. THE EXERCISE GROUP PRACTICED 30 MIN OF BRISK WALKING FOR 5 DAYS A WEEK. RESULTS: ON COMPARISON AMONG THE GROUPS, IN YG, THERE WAS A MEAN CHANGE OF 0.47 IN GLYCATED HEMOGLOBIN WHICH WAS GREATER THAN MEAN REDUCTION OF 0.28 IN THE EXERCISE GROUP WITH P < 0.05. STATE ANXIETY REDUCED BY 7.8 AND TRAIT ANXIETY REDUCED BY 4.4 IN YG (P < 0.05) IN 3 MONTHS AS COMPARED TO NONSIGNIFICANT REDUCTIONS OF 3 AND 1 IN MEAN OF STATE AND TRAIT ANXIETY SCORES IN THE EXERCISE GROUP (P > 0.05). THERE WAS A STATISTICALLY SIGNIFICANT REDUCTION IN DEPRESSION SCORE IN BOTH THE GROUPS, 8.6 IN YOGA AND 4.0 IN EXERCISE, WHICH WAS GREATER IN YG. ESE IMPROVED BY 19.2 IN YG (P < 0.05), WHEREAS IT IMPROVED ONLY 2.2 IN THE EXERCISE GROUP (P > 0.05). QOL IMPROVED BY 23.7 IN YG AND 3.0 IN THE EXERCISE GROUP WHICH WAS NONSIGNIFICANT IN THE EXERCISE GROUP AS COMPARED TO YG. CONCLUSIONS: YOGA IS SUPERIOR TO EXERCISE ALONE AS A LIFESTYLE MODIFICATION PROGRAM IN IMPROVING GLYCEMIC CONTROL, ANXIETY, DEPRESSION, AND QOL AS WELL AS ESE. 2020 7 1760 35 POSITIVE EFFECTS OF YOGA ON PHYSICAL AND RESPIRATORY FUNCTIONS IN HEALTHY INACTIVE MIDDLE-AGED PEOPLE. CONTEXT: YOGA IMPROVES PHYSICAL AND RESPIRATORY FUNCTIONS IN HEALTHY INACTIVE MIDDLE-AGED PEOPLE. AIM: THIS STUDY AIMED TO ASSESS THE EFFECTS OF 8 WEEKS OF ASANA AND ASANA WITH PRANAYAMA LESSONS IN ORDER TO CLARIFY THE INFLUENCE OF TWO DIFFERENT COMBINATIONS OF YOGA PRACTICE ON PHYSICAL AND RESPIRATORY FUNCTIONS IN HEALTHY INACTIVE MIDDLE-AGED PEOPLE. SUBJECTS AND METHODS: A TOTAL OF 28 PARTICIPANTS (MEAN AGE: 52.7 YEARS) WERE DIVIDED INTO A YOGA ASANA (YA) GROUP AND YA WITH PRANAYAMA (YAP) GROUP. PARTICIPANTS ATTENDED A 70-MIN SESSION ONCE A WEEK FOR 8 WEEKS. THE YA GROUP PRACTICED BASIC ASANA WITHOUT SPECIFIC BREATHING INSTRUCTIONS, WHILE THE YAP GROUP PRACTICED BASIC ASANA WITH SPECIFIC BREATHING INSTRUCTIONS (PRANAYAMA). RESPIRATORY FUNCTION WAS MEASURED WITH AN AUTOSPIROMETER. PHYSICAL FUNCTION ASSESSMENTS INCLUDED THE 30-S CHAIR STAND TEST AND UPPER AND LOWER EXTREMITY FLEXIBILITY. ALL TESTS WERE ASSESSED AT BASELINE AND AFTER 8 WEEKS OF INTERVENTION. STATISTICAL ANALYSIS: CHANGES IN SCORES WERE ANALYZED WITH THE PAIRED T-TEST FOR EACH GROUP. PRE-POST RESULTS WERE COMPARED FOR ALL THE MEASURED VALUES. P < 0.05 WAS CONSIDERED STATISTICALLY SIGNIFICANT. RESULTS: BOTH GROUPS SHOWED SIGNIFICANT IMPROVEMENTS IN PHYSICAL AND OVERALL RESPIRATORY FUNCTIONS AFTER THE 8-WEEK YOGA INTERVENTION. HOWEVER, THE MAXIMAL INSPIRATORY PRESSURE AND LOWER EXTREMITY FLEXIBILITY IMPROVED ONLY IN THE YAP GROUP. CONCLUSIONS: THE 8-WEEK YOGA INTERVENTION FOR HEALTHY INACTIVE MIDDLE-AGED PEOPLE IMPROVED THE OVERALL RESPIRATORY AND PHYSICAL FUNCTIONS, AND THE INCLUSION OF PRANAYAMA HAD THE ADDED BENEFIT OF IMPROVING INSPIRATORY MUSCLE STRENGTH AND GLOBAL BODY FLEXIBILITY. 2019 8 871 43 EFFECT OF YOGA THERAPY ON DISEASE ACTIVITY, INFLAMMATORY MARKERS, AND HEART RATE VARIABILITY IN PATIENTS WITH RHEUMATOID ARTHRITIS. BACKGROUND: RHEUMATOID ARTHRITIS (RA) IS AN IMMUNE-MEDIATED INFLAMMATORY DISEASE. ANTIRHEUMATOID TREATMENT REDUCES DISEASE ACTIVITY AND INFLAMMATION, BUT NOT ALL PATIENTS RESPOND TO TREATMENT. AUTONOMIC DYSFUNCTION IS COMMON IN RA LEADING TO FREQUENT CARDIOVASCULAR COMPLICATIONS. YOGA THERAPY MAY BE USEFUL IN THESE PATIENTS, BUT THERE ARE LITTLE DATA ON THE EFFECT OF YOGA ON DISEASE ACTIVITY, INFLAMMATORY MARKERS, AND HEART RATE VARIABILITY (HRV). OBJECTIVES: THIS STUDY ASSESSED THE EFFECT OF 12-WEEK YOGA THERAPY ON DISEASE ACTIVITY, INFLAMMATORY MARKERS, AND HRV IN PATIENTS WITH RA. MATERIALS AND METHODS: THIS RANDOMIZED CONTROL TRIAL WAS CONDUCTED ON NEWLY DIAGNOSED RA PATIENTS ATTENDING OUTPATIENT SERVICES AT THE DEPARTMENT OF CLINICAL IMMUNOLOGY, JIPMER. ONE HUNDRED AND SIXTY-SIX PARTICIPANTS WERE RANDOMIZED INTO TWO GROUPS: THE CONTROL GROUP (CG) (N = 83) AND YOGA GROUP (YG) (N = 83). YOGA THERAPY WAS ADMINISTERED TO PARTICIPANTS IN THE YG FOR 12 WEEKS, ALONG WITH STANDARD MEDICAL TREATMENT. THE CG RECEIVED ONLY STANDARD MEDICAL TREATMENT. PRIMARY OUTCOMES WERE DISEASE ACTIVITY SCORE 28, INTERLEUKIN-1ALPHA (IL-1ALPHA), IL-6, TUMOR NECROSIS FACTOR-ALPHA (TNF-ALPHA), CORTISOL, AND HRV PARAMETERS. ALL PARAMETERS WERE MEASURED AT BASELINE AND AFTER 12 WEEKS. RESULTS: DISEASE ACTIVITY SIGNIFICANTLY DECREASED IN BOTH GROUPS AFTER 12 WEEKS, BUT IT WAS REDUCED MORE IN YG, WHICH WAS STATISTICALLY SIGNIFICANT (P < 0.05). IN BOTH YG AND CG, IL-1ALPHA, IL-6, TNF-ALPHA, AND CORTISOL DECREASED AFTER 12 WEEKS, BUT IL-1ALPHA AND CORTISOL DECREASED MORE SIGNIFICANTLY IN YG THAN IN CG. LOW-FREQUENCY COMPONENT EXPRESSED AS NORMALIZED UNIT (LFNU) AND THE LOW-FREQUENCY/HIGH-FREQUENCY (LF-HF) RATIO DECREASED SIGNIFICANTLY, AND TOTAL POWER AND HF COMPONENT EXPRESSED AS NORMALIZED UNIT (HFNU) INCREASED SIGNIFICANTLY IN THE YG COMPARED WITH CG. CONCLUSION: TWELVE-WEEK YOGA THERAPY, IF GIVEN ALONG WITH STANDARD MEDICAL TREATMENT, SIGNIFICANTLY REDUCES DISEASE ACTIVITY AND IMPROVES SYMPATHOVAGAL BALANCE IN RA PATIENTS. 2020 9 727 30 EFFECT OF LONG-TERM REGULAR YOGA ON PHYSICAL HEALTH OF YOGA PRACTITIONERS. BACKGROUND: YOGA IS A PHYSICAL, MENTAL, AND SPIRITUAL DISCIPLINE. THE EFFECT OF YOGA ON MENTAL HEALTH HAS BEEN STUDIED EXTENSIVELY IN INDIA BUT LESS IN THE CONTEXT OF PHYSICAL HEALTH. OBJECTIVE: THE OBJECTIVE WAS TO EXPLORE THE EFFECT OF LONG-TERM REGULAR YOGA ON PHYSICAL HEALTH OF YOGA PRACTITIONERS. MATERIALS AND METHODS: IT WAS AN INTERVENTIONAL STUDY. INCLUSION CRITERIA WERE STUDENTS WHO ENROLLED FOR 1-YEAR DIPLOMA COURSE AT THE YOGA CENTER. EXCLUSION CRITERIA WERE NONREGULAR YOGA PRACTITIONERS DURING THE COURSE. PHYSICAL HEALTH PARAMETERS CONSIDERED FOR ASSESSMENT BEFORE AND AFTER THE YOGA COURSE WERE PULMONARY FUNCTION TESTS, MAXIMUM OXYGEN CONSUMPTION (VO2 MAX) USING BRUCE TREADMILL TEST, FLEXIBILITY, BODY COMPOSITION ANALYSIS, AND HEMOGLOBIN LEVEL. PAIRED SAMPLE T-TEST AND CHI-SQUARE TEST WERE USED FOR STATISTICAL ANALYSIS. RESULTS: THE AEROBIC CAPACITY IMPROVED SIGNIFICANTLY IN TERMS OF MEAN (STANDARD DEVIATION [SD]) FORCED VITAL CAPACITY (P < 0.001), FORCED EXPIRATION VOLUME AT THE END OF THE FIRST SECOND (P < 0.001) AS WELL AS PEAK EXPIRATORY FLOW RATE (P = 0.04). THE MEAN (SD) FLEXIBILITY SCORE IMPROVED SIGNIFICANTLY (P < 0.001). SIMILARLY, THE ENDURANCE IMPROVED SIGNIFICANTLY IN TERMS OF MEAN (SD) VO2 MAX (< 0.001) AND TREADMILL TIME (P < 0.001). THERE WAS NO SIGNIFICANT CHANGE IN BODY COMPOSITION AND HEMOGLOBIN LEVEL. CONCLUSIONS: REGULAR YOGA PRACTITIONERS DEMONSTRATED THE IMPROVEMENT IN PULMONARY FUNCTIONS, CARDIORESPIRATORY FITNESS, ENDURANCE, AND FLEXIBILITY. 2021 10 2775 45 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 11 1062 40 EFFECTS OF YOGA ON HEART RATE VARIABILITY AND DEPRESSIVE SYMPTOMS IN WOMEN: A RANDOMIZED CONTROLLED TRIAL. OBJECTIVES: THE PURPOSE OF THE STUDY WAS TO INVESTIGATE THE EFFECTS OF A 12-WEEK YOGA PROGRAM ON HEART RATE VARIABILITY (HRV) AND DEPRESSIVE SYMPTOMS IN DEPRESSED WOMEN. METHODS: THIS WAS A RANDOMIZED CONTROLLED TRIAL. TWENTY-SIX SEDENTARY WOMEN SCORING >/=14 ON THE BECK DEPRESSION INVENTORY-II WERE RANDOMIZED TO EITHER THE YOGA OR THE CONTROL GROUP. THE YOGA GROUP COMPLETED A 12-WEEK YOGA PROGRAM, WHICH TOOK PLACE TWICE A WEEK FOR 60 MIN PER SESSION AND CONSISTED OF BREATHING EXERCISES, YOGA POSE PRACTICE, AND SUPINE MEDITATION/RELAXATION. THE CONTROL GROUP WAS INSTRUCTED NOT TO ENGAGE IN ANY YOGA PRACTICE AND TO MAINTAIN THEIR USUAL LEVEL OF PHYSICAL ACTIVITY DURING THE COURSE OF THE STUDY. PARTICIPANTS' HRV, DEPRESSIVE SYMPTOMS, AND PERCEIVED STRESS WERE ASSESSED AT BASELINE AND POST-TEST. RESULTS: THE YOGA GROUP HAD A SIGNIFICANT INCREASE IN HIGH-FREQUENCY HRV AND DECREASES IN LOW-FREQUENCY HRV AND LOW FREQUENCY/HIGH FREQUENCY RATIO AFTER THE INTERVENTION. THE YOGA GROUP ALSO REPORTED SIGNIFICANTLY REDUCED DEPRESSIVE SYMPTOMS AND PERCEIVED STRESS. NO CHANGE WAS FOUND IN THE CONTROL GROUP. CONCLUSIONS: A 12-WEEK YOGA PROGRAM WAS EFFECTIVE IN INCREASING PARASYMPATHETIC TONE AND REDUCING DEPRESSIVE SYMPTOMS AND PERCEIVED STRESS IN WOMEN WITH ELEVATED DEPRESSIVE SYMPTOMS. REGULAR YOGA PRACTICE MAY BE RECOMMENDED FOR WOMEN TO COPE WITH THEIR DEPRESSIVE SYMPTOMS AND STRESS AND TO IMPROVE THEIR HRV. 2017 12 771 36 EFFECT OF YOGA AND AEROBICS EXERCISE ON SLEEP QUALITY IN WOMEN WITH TYPE 2 DIABETES: A RANDOMIZED CONTROLLED TRIAL. OBJECTIVE: THE AIM OF THIS STUDY WAS INVESTIGATING THE EFFECT OF 12 WEEKS OF YOGA AND AEROBIC EXERCISE (RUNNING ON A TREADMILL) ON THE SLEEP QUALITY IN WOMEN WITH TYPE 2 DIABETES. MATERIALS AND METHODS: 39 DIABETIC WOMEN WERE SELECTED FROM SEMNAN CITY WITH THE MEAN AGE OF 46.85+/-3.35 YEARS, WEIGHT OF 69.79+/-17.18 KG, HEIGHT OF 155.03+/-5.00, BMI OF 29.64+/-5.00 KG/M(2) WHO HAD A BACKGROUND OF DIABETES FOR 6.46+/-2.69 YEARS. THEY WERE THEN RANDOMLY DIVIDED INTO YOGA EXERCISE (N=15), AEROBIC EXERCISE (N=13), AND CONTROL GROUP (N=11). THE EXERCISE PROGRAM WAS PERFORMED FOR 12 WEEKS, THREE SESSIONS PER EACH WEEK. IN ORDER TO MEASURE THE SLEEP QUALITY, THE PITTSBURGH SLEEP QUALITY INDEX (PSQI) WAS USED. THE DATA WERE ANALYZED BY NON-PARAMETRIC WILCOXON AND KRUSKAL-WALLIS TEST AT SIGNIFICANCE LEVEL OF P<0.05. RESULTS: OVERALL SCORE OF SLEEP QUALITY IMPROVED AFTER SIX (P=0.001) AND 12 (P=0.001) WEEKS OF YOGA EXERCISE. ALSO, SIGNIFICANT EFFECT WAS OBSERVED AFTER 6 WEEKS OF AEROBIC EXERCISE (P=0.039). HOWEVER, THE POSITIVE EFFECT WAS DIMINISHED TO UNDER SIGNIFICANT LEVELS AFTER 12 WEEKS OF AEROBIC EXERCISE (P=0.154). KRUSKAL-WALLIS TEST SHOWED SIGNIFICANT DIFFERENCES BETWEEN YOGA AND AEROBIC GROUPS AFTER 12 WEEKS OF EXERCISE (P=0.002). NO SIGNIFICANT DIFFERENCES WERE OBSERVED IN CONTROL GROUPS IN ALL SITUATION. CONCLUSIONS: IT CAN BE CONCLUDED THAT YOGA EXERCISE IS MORE EFFECTIVE IN IMPROVING THE SLEEP QUALITY IN COMPARISON WITH THE SAME COURSE OF AEROBIC EXERCISE IN WOMEN SUFFERING FROM DIABETES TYPE 2. THUS, YOGA EXERCISE CAN BE SUGGESTED TO THESE PATIENTS. 2017 13 716 41 EFFECT OF INTEGRATED YOGA PRACTICES ON IMMUNE RESPONSES IN EXAMINATION STRESS - A PRELIMINARY STUDY. BACKGROUND: STRESS IS OFTEN ASSOCIATED WITH AN INCREASED OCCURRENCE OF AUTONOMIC, CARDIOVASCULAR, AND IMMUNE SYSTEM PATHOLOGY. THIS STUDY WAS DONE TO EVALUATE THE IMPACT OF STRESS ON PSYCHOLOGICAL, PHYSIOLOGICAL PARAMETERS, AND IMMUNE SYSTEM DURING MEDICAL TERM -ACADEMIC EXAMINATION AND THE EFFECT OF YOGA PRACTICES ON THE SAME. MATERIALS AND METHODS: THE STUDY WAS CARRIED OUT ON SIXTY FIRST-YEAR MBBS STUDENTS RANDOMLY ASSIGNED TO YOGA GROUP AND CONTROL GROUP (30 EACH). THE YOGA GROUP UNDERWENT INTEGRATED YOGA PRACTICES FOR 35 MINUTES DAILY IN THE PRESENCE OF TRAINED YOGA TEACHER FOR 12 WEEKS. CONTROL GROUP DID NOT UNDERGO ANY KIND OF YOGA PRACTICE OR STRESS MANAGEMENT. PHYSIOLOGICAL PARAMETERS LIKE HEART RATE, RESPIRATORY RATE, AND BLOOD PRESSURE WERE MEASURED. GLOBAL ASSESSMENT OF RECENT STRESS SCALE AND SPIELBERGERS STATE ANXIETY SCORE WERE ASSESSED AT BASELINE AND DURING THE EXAMINATION. SERUM CORTISOL LEVELS, IL-4, AND IFN-GAMMA LEVELS WERE DETERMINED BY ENZYME-LINKED IMMUNOSORBENT ASSAY TECHNIQUE. RESULT: IN THE YOGA GROUP, NO SIGNIFICANT DIFFERENCE WAS OBSERVED IN PHYSIOLOGICAL PARAMETERS DURING THE EXAMINATION STRESS, WHEREAS IN THE CONTROL GROUP, A SIGNIFICANT INCREASE WAS OBSERVED. LIKEWISE, THE INDICATORS OF PSYCHOLOGICAL STRESS SHOWED HIGHLY SIGNIFICANT DIFFERENCE IN CONTROL GROUP COMPARED WITH SIGNIFICANT DIFFERENCE IN YOGA GROUP. DURING THE EXAMINATION, THE INCREASE IN SERUM CORTICAL AND DECREASE IN SERUM IFN-GAMMA IN YOGA GROUP WAS LESS SIGNIFICANT (P<0.01) THAN IN THE CONTROL GROUP (P<0.001). BOTH THE GROUPS DEMONSTRATED AN INCREASE IN SERUM IL-4 LEVELS, THE CHANGES BEING INSIGNIFICANT FOR THE DURATION OF THE STUDY. CONCLUSION: YOGA RESISTS THE AUTONOMIC CHANGES AND IMPAIRMENT OF CELLULAR IMMUNITY SEEN IN EXAMINATION STRESS. 2011 14 531 39 COMPARISON OF THE EFFECT OF 8 WEEKS AEROBIC AND YOGA TRAINING ON AMBULATORY FUNCTION, FATIGUE AND MOOD STATUS IN MS PATIENTS. BACKGROUND: MULTIPLE SCLEROSIS (MS) IS A DISEASE OF THE CENTRAL NERVOUS SYSTEM THAT RESULTS IN MANY SYMPTOMS INCLUDING MOBILITY LIMITATION AND FATIGUE. PATIENTS AND METHODS: THIRTY-ONE MS PATIENTS, ALL FEMALE WITH MEAN OF AGE OF 36.75 YEARS AND EXPANDED DISABILITY STATUS SCALE SCORES (EDSS) OF 1.0 TO 4.0 WERE RECRUITED. SUBJECTS WERE RANDOMLY ASSIGNED TO ONE OF THE THREE GROUPS: TREADMILL TRAINING, YOGA OR CONTROL GROUPS. TREADMILL TRAINING AND YOGA PRACTICE CONSISTED OF 8 WEEKS (24 SESSIONS, THRICE WEEKLY). THE CONTROL GROUP FOLLOWED THEIR OWN ROUTINE TREATMENT PROGRAM. BALANCE, SPEED AND ENDURANCE OF WALKING, FATIGUE, DEPRESSION AND ANXIETY WERE MEASURED BY BERG BALANCE SCORES, TIME FOR 10M WALK AND DISTANCE FOR A TWO MINUTE WALK, FATIGUE SEVERITY SCALE (FFS), BECK DEPRESSION INVENTORY (BDI) AND BECK ANXIETY INVENTORY (BAI), RESPECTIVELY. RESULTS: COMPARISON OF RESULTS HAVE SHOWN THAT PRE- AND POST-INTERVENTIONS PRODUCED SIGNIFICANT IMPROVEMENTS IN THE BALANCE SCORE, WALKING ENDURANCE, FFS SCORE, BDI SCORE AND BAI SCORE IN THE TREADMILL TRAINING GROUP AND YOGA GROUP. HOWEVER, 10M WALK TIME DECREASED IN THE TREADMILL TRAINING GROUP BUT DID NOT SHOW ANY CLEAR CHANGE IN THE YOGA GROUP. MOREOVER, THE ANALYSIS SHOWED SIGNIFICANT DIFFERENCES BETWEEN THE TREADMILL TRAINING GROUP AND YOGA GROUP FOR BAI SCORE. CONCLUSIONS: THESE RESULTS SUGGEST THAT TREADMILL TRAINING AND YOGA PRACTICE IMPROVED AMBULATORY FUNCTION, FATIGUE AND MOOD STATUS IN THE INDIVIDUALS WITH MILD TO MODERATE MS. 2013 15 715 35 EFFECT OF INTEGRATED YOGA ON STRESS AND HEART RATE VARIABILITY IN PREGNANT WOMEN. OBJECTIVE: TO STUDY THE EFFECT OF INTEGRATED YOGA PRACTICE AND GUIDED YOGIC RELAXATION ON BOTH PERCEIVED STRESS AND MEASURED AUTONOMIC RESPONSE IN HEALTHY PREGNANT WOMEN. METHOD: THE 122 HEALTHY WOMEN RECRUITED BETWEEN THE 18TH AND 20TH WEEK OF PREGNANCY AT PRENATAL CLINICS IN BANGALORE, INDIA, WERE RANDOMIZED TO PRACTICING YOGA AND DEEP RELAXATION OR STANDARD PRENATAL EXERCISES 1-HOUR DAILY. THE RESULTS FOR THE 45 PARTICIPANTS PER GROUP WHO COMPLETED THE STUDY WERE EVALUATED BY REPEATED MEASURES ANALYSIS OF VARIANCE. RESULTS: PERCEIVED STRESS DECREASED BY 31.57% IN THE YOGA GROUP AND INCREASED BY 6.60% IN THE CONTROL GROUP (P=0.001). DURING A GUIDED RELAXATION PERIOD IN THE YOGA GROUP, COMPARED WITH VALUES OBTAINED BEFORE A PRACTICE SESSION, THE HIGH-FREQUENCY BAND OF THE HEART RATE VARIABILITY SPECTRUM (PARASYMPATHETIC) INCREASED BY 64% IN THE 20TH WEEK AND BY 150% IN THE 36TH WEEK, AND BOTH THE LOW-FREQUENCY BAND (SYMPATHETIC), AND THE LOW-FREQUENCY TO HIGH-FREQUENCY RATIO WERE CONCOMITANTLY REDUCED (P<0.001 BETWEEN THE 2 GROUPS). MOREOVER, THE LOW-FREQUENCY BAND REMAINED DECREASED AFTER DEEP RELAXATION IN THE 36TH WEEK IN THE YOGA GROUP. CONCLUSION: YOGA REDUCES PERCEIVED STRESS AND IMPROVES ADAPTIVE AUTONOMIC RESPONSE TO STRESS IN HEALTHY PREGNANT WOMEN. 2009 16 998 37 EFFECTS OF INTEGRATED YOGA ON QUALITY OF LIFE AND INTERPERSONAL RELATIONSHIP OF PREGNANT WOMEN. PURPOSE: THE OBJECTIVE OF THIS STUDY WAS TO INVESTIGATE THE EFFECTS OF INTEGRATED YOGA ON THE QUALITY OF LIFE AND INTERPERSONAL RELATIONSHIPS IN NORMAL PREGNANT WOMEN. METHODS: ONE HUNDRED AND TWO PREGNANT WOMEN BETWEEN 18 AND 20 WEEKS OF GESTATION WHO MET THE INCLUSION CRITERIA WERE RECRUITED FROM THE OBSTETRIC UNITS IN BANGALORE AND WERE RANDOMLY ASSIGNED TO TWO GROUPS OF YOGA (N = 51) AND CONTROL (N = 51). WOMEN WITH MEDICAL CONDITIONS THAT COULD POTENTIALLY LEAD TO PREGNANCY COMPLICATIONS AND THOSE WITH ABNORMAL FETAL PARAMETERS WERE EXCLUDED. THE YOGA GROUP RECEIVED INTEGRATED YOGA WHILE CONTROL GROUP RECEIVED STANDARD ANTENATAL EXERCISES, BOTH FOR 1-H THREE TIMES A WEEK FROM 20TH TO 36TH WEEK OF GESTATION. PRE AND POST ASSESSMENTS WERE DONE USING WHOQOL-100 AND FIRO-B QUESTIONNAIRES. RESULTS: OF THE SIX DOMAINS OF WHOQOL-100, BETWEEN GROUPS ANALYSIS SHOWED SIGNIFICANT IMPROVEMENTS IN THE YOGA GROUP COMPARED TO THE CONTROL IN THE PHYSICAL (P = 0.001), PSYCHOLOGICAL (P < 0.001), SOCIAL (P = 0.003), AND ENVIRONMENTAL DOMAINS (P = 0.001). IN FIRO-B, THE YOGA GROUP SHOWED SIGNIFICANT IMPROVEMENTS IN 'EXPRESSED INCLUSION' (P = 0.02) AND 'WANTED CONTROL' (P = 0.009) DOMAINS COMPARED TO THE CONTROL GROUP. CONCLUSION: THE INTEGRATED YOGA IS AN EFFICACIOUS MEANS OF IMPROVING THE QUALITY OF LIFE OF PREGNANT WOMEN AND ENHANCING CERTAIN ASPECTS OF THEIR INTERPERSONAL RELATIONSHIPS. 2010 17 459 44 CHANGES IN PAIN INTENSITY AND HEALTH RELATED QUALITY OF LIFE WITH IYENGAR YOGA IN NONSPECIFIC CHRONIC LOW BACK PAIN: A RANDOMIZED CONTROLLED STUDY. BACKGROUND: NONSPECIFIC CHRONIC LOW BACK (NCLBP) PAIN IS PREVALENT AMONG ADULT POPULATION AND OFTEN LEADS TO FUNCTIONAL LIMITATIONS, PSYCHOLOGICAL SYMPTOMS, LOWER QUALITY OF LIFE (QOL), AND HIGHER HEALTHCARE COSTS. THE PURPOSE OF THIS STUDY WAS TO DETERMINE THE EFFICACY OF IYENGAR YOGA THERAPY ON PAIN INTENSITY AND HEALTH RELATED QUALITY OF LIFE (HRQOL) WITH NCLBP. AIM OF THE STUDY: TO COMPARE THE EFFECT OF IYENGAR YOGA THERAPY AND CONVENTIONAL EXERCISE THERAPY ON PAIN INTENSITY AND HRQOL IN NONSPECIFIC CHRONIC LOW BACK PAIN. MATERIALS AND METHODS: EXPERIMENTAL STUDY WITH RANDOM SAMPLING TECHNIQUE. SUBJECTS/INTERVENTION: SIXTY SUBJECTS WHO FULFILLED THE SELECTION CRITERIA WERE RANDOMLY ASSIGNED TO IYENGAR YOGA (YOGA GROUP, N = 30) AND CONTROL GROUP (EXERCISE GROUP, N = 30). PARTICIPANTS COMPLETED LOW BACK PAIN EVALUATION FORM AND HRQOL-4 QUESTIONNAIRE BEFORE THEIR INTERVENTION AND AGAIN 4 WEEKS AND 6 MONTH LATER. YOGA GROUP UNDERWENT 29 YOGIC POSTURES TRAINING AND EXERCISE GROUP HAD UNDERGONE GENERAL EXERCISE PROGRAM FOR 4 WEEKS. STATISTICS: REPEATED MEASURES ANALYSIS OF VARIANCE (ANOVA) WAS USED TO ANALYZE GROUP DIFFERENCES OVER TIME, WHILE CONTROLLING FOR BASELINE DIFFERENCES. RESULTS: PATIENTS IN BOTH GROUPS EXPERIENCED SIGNIFICANT REDUCTION IN PAIN AND IMPROVEMENT IN HRQOL. IN VISUAL ANALOGUE SCALE (VAS) YOGA GROUP SHOWED REDUCTION OF 72.81% (P = 0.001) AS COMPARED TO EXERCISE GROUP 42.50% (P = 0.001). IN HRQOL, YOGA GROUP SHOWED REDUCTION OF 86.99% (P = 0.001) AS COMPARED TO EXERCISE GROUP 67.66% (P = 0.001). CONCLUSION: THESE RESULTS SUGGEST THAT IYENGAR YOGA PROVIDES BETTER IMPROVEMENT IN PAIN REDUCTION AND IMPROVEMENT IN HRQOL IN NONSPECIFIC CHRONIC BACK PAIN THAN GENERAL EXERCISE. 2014 18 452 40 CHANGES IN HEART RATE VARIABILITY AFTER YOGA ARE DEPENDENT ON HEART RATE VARIABILITY AT BASELINE AND DURING YOGA: A STUDY SHOWING AUTONOMIC NORMALIZATION EFFECT IN YOGA-NAIVE AND EXPERIENCED SUBJECTS. BACKGROUND: YOGA THERAPY IS WIDELY APPLIED TO THE MAINTENANCE OF HEALTH AND TO TREATMENT OF VARIOUS ILLNESSES. PREVIOUS RESEARCHES INDICATE THE INVOLVEMENT OF AUTONOMIC CONTROL IN ITS EFFECTS, ALTHOUGH THE GENERAL AGREEMENT HAS NOT BEEN REACHED REGARDING THE ACUTE MODULATION OF AUTONOMIC FUNCTION. AIM: THE PRESENT STUDY AIMED AT REVEALING THE ACUTE EFFECT OF YOGA ON THE AUTONOMIC ACTIVITY USING HEART RATE VARIABILITY (HRV) MEASUREMENT. METHODS: TWENTY-SEVEN HEALTHY CONTROLS PARTICIPATED IN THE PRESENT STUDY. FIFTEEN OF THEM (39.5 +/- 8.5 YEARS OLD) WERE NAIVE AND 12 (45.1 +/- 7.0 YEARS OLD) WERE EXPERIENCED IN YOGA. YOGA SKILLS INCLUDED BREATH AWARENESS, TWO TYPES OF ASANA, AND TWO TYPES OF PRANAYAMA. HRV WAS MEASURED AT THE BASELINE, DURING YOGA, AND AT THE RESTING STATE AFTER YOGA. RESULTS: IN BOTH YOGA-NAIVE AND EXPERIENCED PARTICIPANTS, THE CHANGES IN LOW-FREQUENCY (LF) COMPONENT OF HRV AND ITS RATIO TO HIGH-FREQUENCY (HF) COMPONENT (LF/HF) AFTER YOGA WERE FOUND TO BE CORRELATED NEGATIVELY WITH THE BASELINE DATA. THE CHANGES IN LF AFTER YOGA WERE ALSO CORRELATED WITH LF DURING YOGA. THE CHANGES IN HF AS WELL AS THE RAW HRV DATA AFTER YOGA WERE NOT RELATED TO THE BASELINE HRV OR THE HRV DURING YOGA. CONCLUSION: THE RESULTS INDICATE THAT YOGA LEADS TO AN INCREASE IN LF WHEN LF IS LOW AND LEADS TO A DECREASE IN LF WHEN IT IS HIGH AT THE BASELINE. THIS NORMALIZATION OF LF IS DEPENDENT ON THE AUTONOMIC MODULATION DURING YOGA AND MAY UNDERLIE THE CLINICAL EFFECTIVENESS OF YOGA THERAPY BOTH IN YOGA-NAIVE AND EXPERIENCED SUBJECTS. 2020 19 1530 48 IYENGAR YOGA INCREASES CARDIAC PARASYMPATHETIC NERVOUS MODULATION AMONG HEALTHY YOGA PRACTITIONERS. RELAXATION TECHNIQUES ARE ESTABLISHED IN MANAGING OF CARDIAC PATIENTS DURING REHABILITATION AIMING TO REDUCE FUTURE ADVERSE CARDIAC EVENTS. IT HAS BEEN HYPOTHESIZED THAT RELAXATION-TRAINING PROGRAMS MAY SIGNIFICANTLY IMPROVE CARDIAC AUTONOMIC NERVOUS TONE. HOWEVER, THIS HAS NOT BEEN PROVEN FOR ALL AVAILABLE RELAXATION TECHNIQUES. WE TESTED THIS ASSUMPTION BY INVESTIGATING CARDIAC VAGAL MODULATION DURING YOGA.WE EXAMINED 11 HEALTHY YOGA PRACTITIONERS (7 WOMEN AND 4 MEN, MEAN AGE: 43 +/- 11; RANGE: 26-58 YEARS). EACH INDIVIDUAL WAS SUBJECTED TO TRAINING UNITS OF 90 MIN ONCE A WEEK OVER FIVE SUCCESSIVE WEEKS. DURING TWO SESSIONS, THEY PRACTICED A YOGA PROGRAM DEVELOPED FOR CARDIAC PATIENTS BY B.K.S. IYENGAR. ON THREE SESSIONS, THEY PRACTICED A PLACEBO PROGRAM OF RELAXATION. ON EACH TRAINING DAY THEY UNDERWENT AMBULATORY 24 H HOLTER MONITORING. THE GROUP OF YOGA PRACTITIONERS WAS COMPARED TO A MATCHED GROUP OF HEALTHY INDIVIDUALS NOT PRACTICING ANY RELAXATION TECHNIQUES. PARAMETERS OF HEART RATE VARIABILITY (HRV) WERE DETERMINED HOURLY BY A BLINDED OBSERVER. MEAN RR INTERVAL (INTERVAL BETWEEN TWO R-WAVES OF THE ECG) WAS SIGNIFICANTLY HIGHER DURING THE TIME OF YOGA INTERVENTION COMPARED TO PLACEBO AND TO CONTROL (P < 0.001 FOR BOTH). THE INCREASE IN HRV PARAMETERS WAS SIGNIFICANTLY HIGHER DURING YOGA EXERCISE THAN DURING PLACEBO AND CONTROL ESPECIALLY FOR THE PARAMETERS ASSOCIATED WITH VAGAL TONE, I.E. MEAN STANDARD DEVIATION OF NN (NORMAL BEAT TO NORMAL BEAT OF THE ECG) INTERVALS FOR ALL 5-MIN INTERVALS (SDNNI, P < 0.001 FOR BOTH) AND ROOT MEAN SQUARE SUCCESSIVE DIFFERENCE (RMSSD, P < 0.01 FOR BOTH). IN CONCLUSION, RELAXATION BY YOGA TRAINING IS ASSOCIATED WITH A SIGNIFICANT INCREASE OF CARDIAC VAGAL MODULATION. SINCE THIS METHOD IS EASY TO APPLY WITH NO SIDE EFFECTS, IT COULD BE A SUITABLE INTERVENTION IN CARDIAC REHABILITATION PROGRAMS. 2007 20 1258 32 FIFTEEN MINUTES OF CHAIR-BASED YOGA POSTURES OR GUIDED MEDITATION PERFORMED IN THE OFFICE CAN ELICIT A RELAXATION RESPONSE. THIS STUDY COMPARED ACUTE (15 MIN) YOGA POSTURE AND GUIDED MEDITATION PRACTICE, PERFORMED SEATED IN A TYPICAL OFFICE WORKSPACE, ON PHYSIOLOGICAL AND PSYCHOLOGICAL MARKERS OF STRESS. TWENTY PARTICIPANTS (39.6 +/- 9.5 YR) COMPLETED THREE CONDITIONS: YOGA, MEDITATION, AND CONTROL (I.E., USUAL WORK) SEPARATED BY >/=24 HRS. YOGA AND MEDITATION SIGNIFICANTLY REDUCED PERCEIVED STRESS VERSUS CONTROL, AND THIS EFFECT WAS MAINTAINED POSTINTERVENTION. YOGA INCREASED HEART RATE WHILE MEDITATION REDUCED HEART RATE VERSUS CONTROL (P < 0.05). RESPIRATION RATE WAS REDUCED DURING YOGA AND MEDITATION VERSUS CONTROL (P < 0.05). DOMAINS OF HEART RATE VARIABILITY (E.G., SDNN AND TOTAL POWER) WERE SIGNIFICANTLY REDUCED DURING CONTROL VERSUS YOGA AND MEDITATION. SYSTOLIC AND DIASTOLIC BLOOD PRESSURE WERE REDUCED SECONDARY TO MEDITATION VERSUS CONTROL ONLY (P < 0.05). PHYSIOLOGICAL ADAPTATIONS GENERALLY REGRESSED TOWARD BASELINE POSTINTERVENTION. IN CONCLUSION, YOGA POSTURES OR MEDITATION PERFORMED IN THE OFFICE CAN ACUTELY IMPROVE SEVERAL PHYSIOLOGICAL AND PSYCHOLOGICAL MARKERS OF STRESS. THESE EFFECTS MAY BE AT LEAST PARTIALLY MEDIATED BY REDUCED RESPIRATION RATE. 2012