1  761 161 EFFECT OF SUDARSHAN KRIYA YOGA (SKY) ON DAYTIME AND SITUATIONAL SLEEP PROPENSITY IN NOVICE PRACTITIONERS: A PROSPECTIVE COHORT STUDY. OBJECTIVES: HECTIC, LATE-NIGHT LIFESTYLE HAS REDUCED 90 MIN SLEEP IN 20% ADULTS RESULTING IN INSOMNIA AND EXCESSIVE DAYTIME SLEEPINESS (EDS). WE ASSESS THE SCOPE OF SUDARSHAN KRIYA YOGA (SKY), A 4-COMPONENT, BREATHING PROCESS IN REDUCING EDS, GENERALLY AND SITUATIONALLY. METHODS: THIS IS A PROSPECTIVE, CONTROLLED STUDY INVOLVING RANDOMIZED SUBJECTS WITHOUT ANY SLEEP-WAKE CYCLE ANOMALIES AND PRIOR EXPERIENCE IN SKY. SUBJECTS (N=52) PERFORMED 30 MIN OF SKY FOR 6 DAYS/WEEK FOR 8 WEEKS, WHILE CONTROLS (N=53) PERFORMED SITTING ACTIVITY AND SURYANAMASKAR FOR 4-WEEKS EACH. EPWORTH SLEEPINESS SCALE (ESS) WAS USED TO MEASURE EDS AT 0, 4, AND 8 WEEKS. RESULTS: SKY GROUP SHOWED SIGNIFICANT ESS SCORE IMPROVEMENTS BETWEEN 0-4 WEEKS AND 4-8 WEEKS OF 1.22 (P=0.0001) AND 1.66 (P=0.001) RESPECTIVELY. CONTROLS HOWEVER FAILED TO IMPROVE WITH SCORE DIFFERENCES OF 0.02 (P=0.892) AND 0.02 (P=0.8212) RESPECTIVELY. SKY GROUP SHOWED SIGNIFICANT ESS SCORE IMPROVEMENT OVER CONTROLS AT 4-WEEKS (DIFFERENCE=1.74; P=0.013) AND 8-WEEKS (DIFFERENCE EIGHT; P=0.0001). IMPROVEMENT WAS MOST FOR OBESE PEOPLE AND THOSE SITTING IN A HALTED CAR. CONCLUSIONS: IMPROVEMENT IN SUBJECTS' NIGHTTIME SLEEP AND DAYTIME WAKEFULNESS IN SKY PRACTITIONERS CAN BE ATTRIBUTED TO POLYVAGAL THEORY. INCREASED HEART RATE VARIABILITY (HRV) ALTERATIONS AND SYMPATHETIC HYPERAROUSAL IN CHRONIC INSOMNIA; AND CHOLINERGIC AND GABAERGIC DYSREGULATION IN ANXIETY DISORDERS ARE COUNTERED BY REGULATED VAGAL NERVE STIMULATION POST SKY. OUR STUDY ESTABLISHES EFFECTIVITY OF SKY IN REDUCING EDS (TOTAL AND SITUATIONAL), PROVIDES A CLINICAL CORRELATION FOR PRIOR POLYSOMNOGRAPHIC EVIDENCE AND PAVES WAY FOR LARGER TRIALS DIRECTED TOWARDS SKY PRESCRIPTIONS FOR INSOMNIA.	2020	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
2  261  28 ACUTE AND CHRONIC EFFECTS OF TANTRIC YOGA PRACTICE ON DISTRESS INDEX. OBJECTIVES: TO EVALUATE THE ACUTE AND CHRONIC EFFECTS OF YOGA PRACTICE. DESIGN: QUANTITATIVE STUDY USING A ONE-GROUP PRE-POSTTEST DESIGN. SETTING: VISAO FUTURO INSTITUTE, PORANGABA, SAO PAULO, BRAZIL. PARTICIPANTS: 22 VOLUNTEERS (7 MEN AND 15 WOMEN). INTERVENTION: SIX WEEKS OF A TANTRIC YOGA PROGRAM (TYP), 50 MINUTES PER SESSION, HELD TWICE A WEEK FROM 8 A.M. TO 9 A.M. THE LOCAL ETHICS COMMITTEE APPROVED THE PROTOCOL. OUTCOME MEASURES: DATA WERE COLLECTED IN THE FIRST WEEK AND AT THE END OF THE SIXTH WEEK OF TYP. SALIVARY CORTISOL CONCENTRATION (SCC) WAS USED TO MEASURE PHYSIOLOGY OF DISTRESS AND TO ANALYZE THE SHORT- AND LONG-TERM EFFECTS OF TYP. PSYCHOLOGICAL DISTRESS WAS EVALUATED BY APPLYING A SPECIFIC PERCEIVED STRESS QUESTIONNAIRE (PSQ). RESULTS (MEAN+/-STANDARD DEVIATION) WERE ANALYZED BY WILCOXON TEST (P<0.05). RESULTS: SCC DECREASED 24% AFTER THE FIRST (0.66+/-0.20 MUG/DL VERSUS 0.50+/-0.13 MUG/DL) AND LAST (1.01+/-0.37 VERSUS 0.76+/-0.31 MUG/DL) SESSIONS, SHOWING THE SHORT-TERM EFFECT OF YOGA. LONG-TERM EFFECTS WERE ANALYZED BY DAILY RHYTHM OF CORTISOL PRODUCTION. IN THE BEGINNING, VOLUNTEERS SHOWED ALTERED SCC DURING THE DAY, WITH NIGHTTIME VALUES (0.42+/-0.28) HIGHER THAN THOSE AT NOON (0.30+/-0.06). AFTER THE TYP, SCC WAS HIGHER IN THE MORNING (1.01+/-0.37) AND DECREASED DURING THE DAY, WITH LOWER VALUES BEFORE SLEEP (0.30+/-0.13). THE TYP WAS ALSO EFFICIENT TO REDUCE PSQ SCORES (0.45+/-0.13 VERSUS 0.39+/-0.07). SPECIFICALLY, THE IRRITABILITY, TENSION, AND FATIGUE DOMAINS ON THE PSQ DECREASED (0.60+/-0.20 VERSUS 0.46+/-0.13), AS DID THE FEAR AND ANXIETY DOMAINS (0.54+/-0.30 VERSUS 0.30+/-0.20). CONCLUSION: OVER THE SHORT TERM, TYP LED TO THE DECREASE OF CORTISOL PRODUCTION. OVER THE LONG TERM, TYP INDUCED HIGHER CORTISOL PRODUCTION IN THE MORNING AND LOWER PRODUCTION IN THE EVENING. THOSE EFFECTS CONTRIBUTED TO THE PHYSICAL AND MENTAL WELL-BEING OF THE PARTICIPANTS.	2015	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
3 1866  25 RANDOMIZED TRIAL OF TIBETAN YOGA IN PATIENTS WITH BREAST CANCER UNDERGOING CHEMOTHERAPY. BACKGROUND: THE CURRENT RANDOMIZED TRIAL EXAMINED THE EFFECTS OF A TIBETAN YOGA PROGRAM (TYP) VERSUS A STRETCHING PROGRAM (STP) AND USUAL CARE (UC) ON SLEEP AND FATIGUE IN WOMEN WITH BREAST CANCER WHO WERE UNDERGOING CHEMOTHERAPY. METHODS: WOMEN WITH STAGE (AMERICAN JOINT COMMITTEE ON CANCER (AJCC) TNM) I TO III BREAST CANCER WHO WERE UNDERGOING CHEMOTHERAPY WERE RANDOMIZED TO TYP (74 WOMEN), STP (68 WOMEN), OR UC (85 WOMEN). PARTICIPANTS IN THE TYP AND STP GROUPS PARTICIPATED IN 4 SESSIONS DURING CHEMOTHERAPY, FOLLOWED BY 3 BOOSTER SESSIONS OVER THE SUBSEQUENT 6 MONTHS, AND WERE ENCOURAGED TO PRACTICE AT HOME. SELF-REPORT MEASURES OF SLEEP DISTURBANCES (PITTSBURGH SLEEP QUALITY INDEX), FATIGUE (BRIEF FATIGUE INVENTORY), AND ACTIGRAPHY WERE COLLECTED AT BASELINE; 1 WEEK AFTER TREATMENT; AND AT 3, 6, AND 12 MONTHS. RESULTS: THERE WERE NO GROUP DIFFERENCES NOTED IN TOTAL SLEEP DISTURBANCES OR FATIGUE LEVELS OVER TIME. HOWEVER, PATIENTS IN THE TYP GROUP REPORTED FEWER DAILY DISTURBANCES 1 WEEK AFTER TREATMENT COMPARED WITH THOSE IN THE STP (DIFFERENCE, -0.43; 95% CONFIDENCE INTERVAL [95% CI], -0.82 TO -0.04 [P = .03]) AND UC (DIFFERENCE, -0.41; 95% CI, -0.77 TO -0.05 [P = .02]) GROUPS. GROUP DIFFERENCES AT THE OTHER TIME POINTS WERE MAINTAINED FOR TYP VERSUS STP. ACTIGRAPHY DATA REVEALED GREATER MINUTES AWAKE AFTER SLEEP ONSET FOR PATIENTS IN THE STP GROUP 1 WEEK AFTER TREATMENT VERSUS THOSE IN THE TYP (DIFFERENCE, 15.36; 95% CI, 7.25-23.48 [P = .0003]) AND UC (DIFFERENCE, 14.48; 95% CI, 7.09-21.87 [P = .0002]) GROUPS. PATIENTS IN THE TYP GROUP WHO PRACTICED AT LEAST 2 TIMES A WEEK DURING FOLLOW-UP REPORTED BETTER PITTSBURGH SLEEP QUALITY INDEX AND ACTIGRAPHY OUTCOMES AT 3 MONTHS AND 6 MONTHS AFTER TREATMENT COMPARED WITH THOSE WHO DID NOT AND BETTER OUTCOMES COMPARED WITH THOSE IN THE UC GROUP. CONCLUSIONS: PARTICIPATING IN TYP DURING CHEMOTHERAPY RESULTED IN MODEST SHORT-TERM BENEFITS IN SLEEP QUALITY, WITH LONG-TERM BENEFITS EMERGING OVER TIME FOR THOSE WHO PRACTICED TYP AT LEAST 2 TIMES A WEEK. CANCER 2018;124:36-45. (C) 2017 AMERICAN CANCER SOCIETY.	2018	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
4  350  46 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	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
5 2031  46 TAILORED INDIVIDUAL YOGA PRACTICE IMPROVES SLEEP QUALITY, FATIGUE, ANXIETY, AND DEPRESSION IN CHRONIC INSOMNIA DISORDER. BACKGROUND: CHRONIC INSOMNIA DISORDER (CI) IS A PREVALENT SLEEP DISORDER THAT CAN LEAD TO DISTURBED DAYTIME FUNCTIONING AND IS CLOSELY ASSOCIATED WITH ANXIETY AND DEPRESSION. FIRST-CHOICE TREATMENT IS COGNITIVE BEHAVIORAL THERAPY (CBT-I). OTHER MIND-BODY INTERVENTIONS, SUCH AS TAI-CHI AND YOGA, HAVE DEMONSTRATED SUBJECTIVE IMPROVEMENTS IN SLEEP QUALITY. THE PURPOSE OF THIS STUDY WAS TO ASSESS THE EFFICACY OF YOGA FOR IMPROVEMENT OF SUBJECTIVE AND OBJECTIVE SLEEP QUALITY AS WELL AS MEASURES OF ANXIETY, DEPRESSION, SLEEPINESS, AND FATIGUE IN PATIENTS WITH CI. METHODS: ADULTS WITH CI WERE PROSPECTIVELY INCLUDED IN THIS SINGLE GROUP PRE-POST STUDY. BASELINE ASSESSMENTS INCLUDED HOME POLYSOMNOGRAPHY (PSG), 7-DAY ACTIGRAPHY, AND QUESTIONNAIRES (PITTSBURGH SLEEP QUALITY INDEX QUESTIONNAIRE (PSQI), HOSPITAL ANXIETY DEPRESSION SCALE (HADS), EPWORTH SLEEPINESS SCALE (ESS), PICHOT FATIGUE SCALE (PS)). PATIENTS PRACTICED VINIYOGA, AN INDIVIDUALISED YOGA PRACTICE WITH DAILY SELF-ADMINISTERED EXERCISES, FOR 14 WEEKS. ASSESSMENTS WERE REPEATED AT THE END OF YOGA PRACTICE. RESULTS: TWENTY-ONE PATIENTS COMPLETED THE STUDY. OBJECTIVE SLEEP MEASUREMENTS REVEALED NO CHANGE IN PSG PARAMETERS AFTER YOGA PRACTICE, BUT A DECREASE IN AROUSALS ON ACTIGRAPHY (P < 0.001). SUBJECTIVE SYMPTOMS IMPROVED FOR ALL QUESTIONNAIRES (PSQI, P < 0.001; HAD-A, P = 0.020, HAD-D, P = 0.001, ESS, P = 0.041, PS, P = 0.010). IN UNIVARIATE CORRELATIONS, DECREASE IN PSQI WAS ASSOCIATED WITH INCREASE IN SLEEP STAGE N3 (P < 0.001) ON PSG. CONCLUSIONS: WE HAVE DEMONSTRATED A POSITIVE IMPACT OF INDIVIDUALIZED YOGA PRACTICE ON SUBJECTIVE PARAMETERS RELATED TO SLEEP AND DAYTIME SYMPTOMS IN CI, RESULTING IN FEWER AROUSALS ON ACTIGRAPHY. YOGA COULD BE PROPOSED AS A POTENTIALLY USEFUL ALTERNATIVE TO CBT-I IN CI, AS IT IS EASY TO PRACTICE AUTONOMOUSLY OVER THE LONG-TERM. HOWEVER, GIVEN THE DESIGN OF THE PRESENT STUDY, FUTURE PROSPECTIVE CONTROLLED STUDIES SHOULD FIRST CONFIRM OUR RESULTS. TRIAL REGISTRATION: CLINICALTRIALS.GOV IDENTIFIER: NCT03314441 , DATE OF REGISTRATION: 19/10/2017.	2022	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
6  451  42 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	
                                                                                                                                                   
7  385  40 BENEFICIAL EFFECTS OF YOGA STRETCHING ON SALIVARY STRESS HORMONES AND PARASYMPATHETIC NERVE ACTIVITY. THIS STUDY AIMED TO DETERMINE THE EFFECT OF YOGA STRETCHING ON SALIVARY STRESS HORMONES AND CARDIAC AUTONOMIC NERVOUS SYSTEM. TO OUR KNOWLEDGE, THIS STUDY IS THE FIRST TO INVESTIGATE CHANGES IN CARDIAC AUTONOMIC NERVOUS SYSTEM AFTER YOGA STRETCHING. IN THIS CROSSOVER DESIGN STUDY, 10 ADULT MEN (AGE, 26.3 +/- 2.5 YEARS) WITHOUT YOGA EXPERIENCE PARTICIPATED IN THE REST AND YOGA TRIALS FOR 90 MIN. MEASUREMENTS WERE CARRIED OUT BEFORE (PRE), IMMEDIATELY (POST), 60 MIN, AND 120 MIN AFTER REST OR YOGA STRETCHING. SALIVA SAMPLES WERE COLLECTED BY CHEWING A STERILE COTTON BALL AT A FREQUENCY OF 60 CYCLES PER MINUTE. SALIVARY CORTISOL AND TESTOSTERONE CONCENTRATIONS WERE MEASURED USING AN ENZYME-LINKED IMMUNOSORBENT ASSAY. WITH THE SUBJECTS IN THE SITTING POSITION, HEART RATE VARIABILITY WAS MEASURED USING PULSE ANALYZER PLUS FOR 150 SECONDS. AS REGARDS RATE CHANGES, SALIVARY TESTOSTERONE LEVEL TENDED TO INCREASE (P = 0.088), TESTOSTERONE/CORTISOL RATIO SIGNIFICANTLY INCREASED (P < 0.05), AND CORTISOL LEVEL SIGNIFICANTLY DECREASED (P < 0.05) AT 120 MIN AFTER YOGA STRETCHING. THE SQUARE ROOT OF THE MEAN-SQUARED DIFFERENCES OF SUCCESSIVE NORMAL-TO-NORMAL INTERVALS AND NATURAL LOGARITHM HIGH-FREQUENCY COMPONENT, WHICH ARE INDICATORS OF PARASYMPATHETIC NERVE ACTIVITY, INCREASED AT 60 MIN (P < 0.05) AND 120 MIN (P < 0.05) IN THE YOGA TRIAL, RESPECTIVELY. IN CONCLUSION, YOGA STRETCHING CAN ENHANCE PARASYMPATHETIC NERVE ACTIVITY AND IMPROVE STRESS HORMONES. THEREFORE, YOGA STRETCHING MAY BE USEFUL TO COMPENSATE FOR PHYSICAL INACTIVITY AND INCREASE LIFE EXPECTANCY IN THE GENERAL POPULATION.	2020	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
8 1317  28 HEART RATE VARIABILITY CHANGES DURING HIGH FREQUENCY YOGA BREATHING AND BREATH AWARENESS. BACKGROUND: PRE AND POST COMPARISON AFTER ONE MINUTE OF HIGH FREQUENCY YOGA BREATHING (HFYB) SUGGESTED THAT THE HFYB MODIFIES THE AUTONOMIC STATUS BY INCREASING SYMPATHETIC MODULATION, BUT ITS EFFECT DURING THE PRACTICE WAS NOT ASSESSED. METHODS: THIRTY-EIGHT MALE VOLUNTEERS WITH GROUP AVERAGE AGE +/- S.D., 23.3 +/- 4.4 YEARS WERE EACH ASSESSED ON TWO SEPARATE DAYS IN TWO SESSIONS, (I) HFYB AND (II) BREATH AWARENESS. EACH SESSION WAS FOR 35 MINUTES, WITH 3 PERIODS, I.E., PRE (5 MINUTES), DURING HFYB OR BREATH AWARENESS (15 MINUTES) AND POST (5 MINUTES). RESULTS: THERE WAS A SIGNIFICANT DECREASE IN NN50, PNN50 AND THE MEAN RR INTERVAL DURING AND AFTER HFYB AND AFTER BREATH AWARENESS, COMPARED TO THE RESPECTIVE 'PRE' VALUES (P < 0.05) (REPEATED MEASURES ANOVA FOLLOWED BY POST-HOC ANALYSIS). THE LF POWER INCREASED AND HF POWER DECREASED DURING AND AFTER BREATH AWARENESS AND LF/HF RATIO INCREASED AFTER BREATH AWARENESS (P < 0.05). CONCLUSION: THE RESULTS SUGGEST THAT THERE WAS REDUCED PARASYMPATHETIC MODULATION DURING AND AFTER HFYB AND INCREASED SYMPATHETIC MODULATION WITH REDUCED PARASYMPATHETIC MODULATION DURING AND AFTER BREATH AWARENESS.	2011	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
9 2507  32 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	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
10 1578  38 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	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
11 2726  37 YOGA NIDRA PRACTICE SHOWS IMPROVEMENT IN SLEEP IN PATIENTS WITH CHRONIC INSOMNIA: A RANDOMIZED CONTROLLED TRIAL. BACKGROUND YOGA NIDRA IS PRACTISED BY SAGES FOR SLEEP. THE PRACTICE IS SIMPLE TO USE AND HAS BEEN CLEARLY LAID OUT, BUT ITS ROLE IN THE TREATMENT OF CHRONIC INSOMNIA HAS NOT BEEN WELL STUDIED. METHODS IN THIS RANDOMIZED PARALLEL-DESIGN STUDY CONDUCTED DURING 2012-16, WE ENROLLED 41 PATIENTS WITH CHRONIC INSOMNIA TO RECEIVE CONVENTIONAL INTERVENTION OF COGNITIVE BEHAVIOURAL THERAPY FOR INSOMNIA (N=20) OR YOGA NIDRA (N=21). OUTCOME MEASURES WERE BOTH SUBJECTIVE USING A SLEEP DIARY AND OBJECTIVE USING POLYSOMNOGRAPHY (PSG). SALIVARY CORTISOL LEVELS WERE ALSO MEASURED. PSG WAS DONE BEFORE THE INTERVENTION IN ALL PATIENTS AND REPEATED ONLY IN THOSE WHO VOLUNTEERED FOR THE SAME. RESULTS BOTH INTERVENTIONS SHOWED AN IMPROVEMENT IN SUBJECTIVE TOTAL SLEEP TIME (TST), SLEEP EFFICIENCY, WAKE AFTER SLEEP ONSET, REDUCTION IN TOTAL WAKE DURATION AND ENHANCEMENT IN SUBJECTIVE SLEEP QUALITY. OBJECTIVELY, BOTH THE INTERVENTIONS IMPROVED TST AND TOTAL WAKE DURATION AND INCREASED N1% OF TST. YOGA NIDRA SHOWED MARKED IMPROVEMENT IN N2% AND N3% IN TST. SALIVARY CORTISOL REDUCED STATISTICALLY SIGNIFICANTLY AFTER YOGA NIDRA (P=0.041). CONCLUSION IMPROVEMENT OF N3 SLEEP, TOTAL WAKE DURATION AND SUBJECTIVE SLEEP QUALITY OCCURRED FOLLOWING YOGA NIDRA PRACTICE. YOGA NIDRA PRACTICE CAN BE USED FOR TREATMENT OF CHRONIC INSOMNIA AFTER SUPERVISED PRACTICE SESSIONS.	2021	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
12  674  27 EFFECT OF A SHORT-TERM YOGA-BASED LIFESTYLE INTERVENTION ON HEALTH-RELATED QUALITY OF LIFE IN OVERWEIGHT AND OBESE SUBJECTS. OBJECTIVE: TO STUDY THE EFFECT OF A SHORT-TERM YOGA-BASED LIFESTYLE INTERVENTION ON HEALTH-RELATED QUALITY OF LIFE (HRQOL) IN OVERWEIGHT AND OBESE PERSONS. DESIGN AND SETTING: NONRANDOMIZED, SINGLE-ARM INTERVENTIONAL STUDY CONDUCTED FROM AUGUST 2012 TO MARCH 2015 AT INTEGRAL HEALTH CLINIC, DEPARTMENT OF PHYSIOLOGY, ALL INDIA INSTITUTE OF MEDICAL SCIENCES, NEW DELHI, INDIA. PARTICIPANTS: OVERWEIGHT (BODY-MASS INDEX [BMI], 23-24.9 KG/M(2)) AND OBESE (BMI, >/=25 KG/M(2)) PERSONS (N = 279) AGED 20-60 YEARS. INTERVENTION: PRETESTED YOGA-BASED LIFESTYLE INTERVENTION, INCLUDING ASANAS (POSTURES), PRANAYAMA (BREATHING EXERCISES), RELAXATION TECHNIQUES, LECTURES, GROUP SUPPORT, NUTRITION AWARENESS PROGRAM, AND INDIVIDUALIZED ADVICE. OUTCOME MEASURES: PRIMARY OUTCOME MEASURE WAS HRQOL, MEASURED BY USING SHORT VERSION OF WORLD HEALTH ORGANIZATION QUALITY OF LIFE (WHOQOL-BREF) QUESTIONNAIRE. SECONDARY OUTCOME MEASURES WERE ANTHROPOMETRIC VARIABLES, SYSTOLIC AND DIASTOLIC BLOOD PRESSURE, PULSE RATE, LIPID PROFILE, AND FASTING GLUCOSE. A SUBGROUP ANALYSIS ACCORDING TO SEX WAS ALSO PERFORMED. RESULTS: THE OVERALL QUALITY OF LIFE AND HEALTH IMPROVED AFTER SHORT-TERM YOGA-BASED LIFESTYLE INTERVENTION IN OVERWEIGHT AND OBESE PERSONS. PHYSICAL, PSYCHOLOGICAL AND ENVIRONMENTAL DOMAIN SCORES SIGNIFICANTLY INCREASED FROM BASELINE TO DAY 10, AND EFFICACY WAS NOTED IN BOTH MALE AND FEMALE SUBGROUPS. AFTER 10 DAYS OF INTERVENTION, THE FOLLOWING ALSO DECREASED SIGNIFICANTLY: BODY WEIGHT, BMI, TOTAL BODY FAT, WAIST AND HIP CIRCUMFERENCE, WAIST-TO-HIP RATIO, SYSTOLIC AND DIASTOLIC BLOOD PRESSURE, TOTAL CHOLESTEROL, LOW-DENSITY LIPOPROTEIN, TRIGLYCERIDES, AND FASTING GLUCOSE. CONCLUSION: A SHORT-TERM YOGA-BASED LIFESTYLE INTERVENTION HAD A POSITIVE EFFECT ON HRQOL IN OVERWEIGHT AND OBESE PERSONS.	2016	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
13  370  31 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	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
14 2250  41 THE LONGITUDINAL EFFECTS OF SEATED ISOMETRIC YOGA ON BLOOD BIOMARKERS, AUTONOMIC FUNCTIONS, AND PSYCHOLOGICAL PARAMETERS OF PATIENTS WITH CHRONIC FATIGUE SYNDROME: A PILOT STUDY. BACKGROUND: IN A PREVIOUS RANDOMIZED CONTROLLED TRIAL, WE FOUND THAT PRACTICING SEATED ISOMETRIC YOGA REGULARLY FOR 2 MONTHS IMPROVED THE FATIGUE OF PATIENTS WITH CHRONIC FATIGUE SYNDROME (CFS) WHO ARE RESISTANT TO CONVENTIONAL THERAPY. THE AIM OF THIS PILOT STUDY WAS TO INVESTIGATE THE POSSIBLE MECHANISMS BEHIND THIS FINDING BY COMPARING BLOOD BIOMARKERS, AUTONOMIC NERVOUS FUNCTION, AND PSYCHOLOGICAL INDICES BEFORE VERSUS AFTER AN INTERVENTION PERIOD OF SEATED ISOMETRIC YOGA PRACTICE. METHODS: FIFTEEN PATIENTS WITH CFS WHO DID NOT SHOW SATISFACTORY IMPROVEMENTS AFTER AT LEAST 6 MONTHS OF CONVENTIONAL THERAPY PRACTICED SEATED ISOMETRIC YOGA (BIWEEKLY 20-MIN SESSIONS WITH A YOGA INSTRUCTOR AND DAILY PRACTICE AT HOME) FOR 2 MONTHS. THE LONGITUDINAL EFFECTS OF SEATED ISOMETRIC YOGA ON FATIGUE, BLOOD BIOMARKERS, AUTONOMIC FUNCTION, AND PSYCHOLOGICAL STATE WERE INVESTIGATED BY COMPARING THE FOLLOWING PARAMETERS BEFORE AND AFTER THE INTERVENTION PERIOD: FATIGUE SEVERITY WAS ASSESSED BY THE CHALDER FATIGUE SCALE (FS) SCORE. LEVELS OF THE BLOOD BIOMARKERS CORTISOL, DHEA-S, TNF-ALPHA, IL-6, PROLACTIN, CARNITINE, TGF-BETA1, BDNF, MHPG, HVA, AND ALPHA-MSH WERE MEASURED. THE AUTONOMIC NERVOUS FUNCTIONS ASSESSED WERE HEART RATE (HR) AND HR VARIABILITY. PSYCHOLOGICAL INDICES INCLUDED THE 20-ITEM TORONTO ALEXITHYMIA SCALE (TAS-20) AND THE HOSPITAL ANXIETY AND DEPRESSION SCALE (HADS). RESULTS: PRACTICING SEATED ISOMETRIC YOGA FOR 2 MONTHS RESULTED IN SIGNIFICANT REDUCTIONS IN THE CHALDER FS (P = 0.002) AND HADS-DEPRESSION (P = 0.02) SCORES. NO SIGNIFICANT CHANGES WERE OBSERVED IN ANY OTHER PARAMETER EVALUATED. THE CHANGE IN CHALDER FS SCORE WAS NOT CORRELATED WITH THE CHANGE IN HADS-DEPRESSION SCORE. HOWEVER, THIS CHANGE WAS POSITIVELY CORRELATED WITH CHANGES IN THE SERUM TNF-ALPHA LEVELS (P = 0.048), THE HIGH FREQUENCY COMPONENT OF HR VARIABILITY (P = 0.042), AND TAS-20 SCORES (P = 0.001). CONCLUSIONS: REGULAR PRACTICE OF SEATED ISOMETRIC YOGA FOR 2 MONTHS REDUCED THE FATIGUE AND DEPRESSIVE SYMPTOM SCORES OF PATIENTS WITH CFS WITHOUT AFFECTING ANY OTHER PARAMETERS WE INVESTIGATED. THIS STUDY FAILED TO IDENTIFY THE MARKERS RESPONSIBLE FOR THE LONGITUDINAL FATIGUE-RELIEVING EFFECT OF SEATED ISOMETRIC YOGA. HOWEVER, CONSIDERING THAT THE REDUCED FATIGUE WAS ASSOCIATED WITH DECREASED SERUM TNF-ALPHA LEVEL AND TAS-20 SCORES, FATIGUE IMPROVEMENT MIGHT BE RELATED TO REDUCED INFLAMMATION AND IMPROVED ALEXITHYMIA IN THESE PATIENTS. TRIAL REGISTRATION: UNIVERSITY HOSPITAL MEDICAL INFORMATION NETWORK (UMIN CTR) UMIN000009646. REGISTERED DEC 27, 2012.	2019	

15  448  38 CHANGES IN AUTONOMIC VARIABLES FOLLOWING TWO MEDITATIVE STATES DESCRIBED IN YOGA TEXTS. OBJECTIVES: IN ANCIENT YOGA TEXTS THERE ARE TWO MEDITATIVE STATES DESCRIBED. ONE IS DHARANA, WHICH REQUIRES FOCUSING, THE SECOND IS DHYANA, DURING WHICH THERE IS NO FOCUSING, BUT AN EXPANSIVE MENTAL STATE IS REACHED. WHILE AN EARLIER STUDY DID SHOW IMPROVED PERFORMANCE IN AN ATTENTION TASK AFTER DHARANA, THE AUTONOMIC CHANGES DURING THESE TWO STATES HAVE NOT BEEN STUDIED. METHODS: AUTONOMIC AND RESPIRATORY VARIABLES WERE ASSESSED IN 30 HEALTHY MALE VOLUNTEERS (GROUP MEAN AGE +/- SD, 29.1 +/- 5.1 YEARS) DURING FOUR MENTAL STATES DESCRIBED IN TRADITIONAL YOGA TEXTS. THESE FOUR MENTAL STATES ARE RANDOM THINKING (CANCALATA), NONMEDITATIVE FOCUSING (EKAGRATA), MEDITATIVE FOCUSING (DHARANA), AND EFFORTLESS MEDITATION (DHYANA). ASSESSMENTS WERE MADE BEFORE (5 MINUTES), DURING (20 MINUTES), AND AFTER (5 MINUTES), EACH OF THE FOUR STATES, ON FOUR SEPARATE DAYS. RESULTS: DURING DHYANA THERE WAS A SIGNIFICANT INCREASE IN THE SKIN RESISTANCE LEVEL (P<0.001; POST HOC ANALYSIS FOLLOWING ANOVA, DURING COMPARED TO PRE) AND PHOTO-PLETHYSMOGRAM AMPLITUDE (P<0.05), WHEREAS THERE WAS A SIGNIFICANT DECREASE IN THE HEART RATE (P<0.001) AND BREATH RATE (P<0.001). THERE WAS A SIGNIFICANT DECREASE IN THE LOW FREQUENCY (LF) POWER (P<0.001) AND INCREASE IN THE HIGH FREQUENCY (HF) POWER (P<0.001) IN THE FREQUENCY DOMAIN ANALYSIS OF THE HEART RATE VARIABILITY (HRV) SPECTRUM, ON WHICH HF POWER IS ASSOCIATED WITH PARASYMPATHETIC ACTIVITY. THERE WAS ALSO A SIGNIFICANT INCREASE IN THE NN50 COUNT (THE NUMBER OF INTERVAL DIFFERENCES OF SUCCESSIVE NN INTERVALS GREATER THAN 50 MS; P<0.001) AND THE PNN50 (THE PROPORTION DERIVED BY DIVIDING NN50 BY THE TOTAL NUMBER OF NN INTERVALS; P<0.001) IN TIME DOMAIN ANALYSIS OF HRV, BOTH INDICATIVE OF PARASYMPATHETIC ACTIVITY. CONCLUSIONS: MAXIMUM CHANGES WERE SEEN IN AUTONOMIC VARIABLES AND BREATH RATE DURING THE STATE OF EFFORTLESS MEDITATION (DHYANA). THE CHANGES WERE ALL SUGGESTIVE OF REDUCED SYMPATHETIC ACTIVITY AND/OR INCREASED VAGAL MODULATION. DURING DHARANA THERE WAS AN INCREASE IN SKIN RESISTANCE. THE CHANGES IN HRV DURING EKAGRATA AND CANCALATA WERE INCONCLUSIVE.	2013	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
16 1329  34 HIGH-FREQUENCY CEREBRAL ACTIVATION AND INTERHEMISPHERIC SYNCHRONIZATION FOLLOWING SUDARSHAN KRIYA YOGA AS GLOBAL BRAIN RHYTHMS: THE STATE EFFECTS. CONTEXT: RESPIRATION IS KNOWN TO MODULATE NEURONAL OSCILLATIONS IN THE BRAIN AND IS MEASURED BY ELECTROENCEPHALOGRAM (EEG). SUDARSHAN KRIYA YOGA (SKY) IS A POPULAR BREATHING PROCESS AND IS ESTABLISHED FOR ITS SIGNIFICANT EFFECTS ON THE VARIOUS ASPECTS OF PHYSIOLOGY AND PSYCHOLOGY. AIMS: THIS STUDY AIMED TO OBSERVE NEURONAL OSCILLATIONS IN MULTIFREQUENCY BANDS AND INTERHEMISPHERIC SYNCHRONIZATION FOLLOWING SKY. SETTINGS AND DESIGN: THIS STUDY EMPLOYED BEFORE- AND AFTER-STUDY DESIGN. SUBJECTS AND METHODS: FORTY HEALTHY VOLUNTEERS (AVERAGE AGE 25.45 +/- 5.75, 23 MALES AND 17 FEMALES) PARTICIPATED IN THE STUDY. NINETEEN-CHANNEL EEG WAS RECORDED AND ANALYZED FOR 5 MIN EACH: BEFORE AND AFTER SKY. SPECTRAL POWER FOR DELTA, THETA, ALPHA, BETA, AND GAMMA FREQUENCY BAND WAS CALCULATED USING MULTI-TAPER FAST FOURIER TRANSFORM (CHRONUX TOOLBOX). THE ASYMMETRY INDEX WAS CALCULATED BY SUBTRACTING THE NATURAL LOG OF POWERS OF LEFT (L) HEMISPHERE FROM THE RIGHT((R)) TO SHOW INTERHEMISPHERIC SYNCHRONIZATION. STATISTICAL ANALYSIS: PAIRED T-TEST WAS USED FOR STATISTICAL ANALYSIS. RESULTS: SPECTRAL POWER INCREASED SIGNIFICANTLY IN ALL FREQUENCY BANDS BILATERALLY IN FRONTAL, CENTRAL, PARIETAL, TEMPORAL, AND OCCIPITAL REGIONS OF THE BRAIN AFTER LONG SKY. ELECTRICAL ACTIVITY SHIFTED FROM LOWER TO HIGHER FREQUENCY RANGE WITH A SIGNIFICANT RISE IN THE GAMMA AND BETA POWERS FOLLOWING SKY. ASYMMETRY INDEX VALUES TENDED TOWARD 0 FOLLOWING SKY. CONCLUSIONS: A SINGLE SESSION OF SKY GENERATES GLOBAL BRAIN RHYTHM DOMINANTLY WITH HIGH-FREQUENCY CEREBRAL ACTIVATION AND INITIATES APPROPRIATE INTERHEMISPHERIC SYNCHRONIZATION IN BRAIN RHYTHMS AS STATE EFFECTS. THIS SUGGESTS THAT SKY LEADS TO BETTER ATTENTION, MEMORY, AND EMOTIONAL AND AUTONOMIC CONTROL ALONG WITH ENHANCED COGNITIVE FUNCTIONS, WHICH FINALLY IMPROVES PHYSICAL AND MENTAL WELL-BEING.	2020	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
17 1318  44 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	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
18  326  31 ANTIDEPRESSANT EFFICACY AND HORMONAL EFFECTS OF SUDARSHANA KRIYA YOGA (SKY) IN ALCOHOL DEPENDENT INDIVIDUALS. BACKGROUND: SUDARSHANA KRIYA YOGA (SKY) HAS DEMONSTRABLE ANTIDEPRESSANT EFFECTS. SKY WAS TESTED FOR THIS EFFECT IN INPATIENTS OF ALCOHOL DEPENDENCE. METHODS: FOLLOWING A WEEK OF DETOXIFICATION MANAGEMENT CONSENTING SUBJECTS (N=60) WERE EQUALLY RANDOMIZED TO RECEIVE SKY THERAPY OR NOT (CONTROLS) FOR A TWO-WEEK STUDY. SKY THERAPY INCLUDED ALTERNATE DAY PRACTICE OF SPECIFIED BREATHING EXERCISE UNDER SUPERVISION OF A TRAINED THERAPIST. SUBJECTS COMPLETED THE BECK DEPRESSION INVENTORY (BDI) BEFORE AND AFTER THE TWO WEEKS OF THIS INTERVENTION. MORNING PLASMA CORTISOL, ACTH AND PROLACTIN TOO WERE MEASURED BEFORE AND AT THE END OF TWO WEEKS. RESULTS: IN BOTH GROUPS REDUCTIONS IN BDI SCORES OCCURRED BUT SIGNIFICANTLY MORE SO IN SKY GROUP. LIKEWISE, IN BOTH GROUPS PLASMA CORTISOL AS WELL AS ACTH FELL AFTER TWO WEEKS BUT SIGNIFICANTLY MORE SO IN SKY GROUP. REDUCTION IN BDI SCORES CORRELATED WITH THAT IN CORTISOL IN SKY BUT NOT IN CONTROL GROUP. LIMITATIONS: ANTIDEPRESSANT EFFECTS OF SKY WERE DEMONSTRATED IN EARLY ABSTINENCE THAT ALSO HAD SUBSTANTIAL SPONTANEOUS IMPROVEMENT. IT IS NOT KNOWN IF THIS EFFECT CONTRIBUTES TO SUSTAINED ABSTINENCE. CONCLUSION: RESULTS EXTEND THE ANTIDEPRESSANT EFFECTS OF SKY IN ALCOHOL DEPENDENCE SUBJECTS. REDUCTION IN STRESS-HORMONE LEVELS (CORTISOL AND ACTH) ALONG WITH BDI REDUCTIONS POSSIBLY SUPPORT A BIOLOGICAL MECHANISM OF SKY IN PRODUCING BENEFICIAL EFFECTS.	2006	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
19  117  30 A PILOT STUDY OF GENTLE YOGA FOR SLEEP DISTURBANCE IN WOMEN WITH OSTEOARTHRITIS. OBJECTIVES: THE PURPOSE OF THIS STUDY WAS TO TEST THE FEASIBILITY AND ACCEPTABILITY OF A GENTLE YOGA INTERVENTION FOR SLEEP DISTURBANCE IN OLDER WOMEN WITH OSTEOARTHRITIS (OA) AND TO COLLECT INITIAL EFFICACY DATA ON THE INTERVENTION. METHODS: ALL PARTICIPANTS COMPLETED AN 8-WEEK YOGA PROGRAM THAT INCLUDED 75-MIN WEEKLY CLASSES AND 20 MIN OF NIGHTLY HOME PRACTICE. PARTICIPANTS WERE WOMEN WITH OA AND SYMPTOMS CONSISTENT WITH INSOMNIA. SYMPTOM QUESTIONNAIRES AND 1 WEEK OF WRIST ACTIGRAPHY AND SLEEP DIARIES WERE COMPLETED FOR 1 WEEK PRE- AND POST-INTERVENTION. RESULTS: FOURTEEN WOMEN WERE ENROLLED OF WHOM 13 COMPLETED THE STUDY (MEAN AGE 65.2 +/- 6.9 YEARS). PARTICIPANTS ATTENDED A MEAN OF 7.2 +/- 1.0 CLASSES AND PRACTICED AT HOME 5.83 +/- 1.66 NIGHTS/WEEK. THE INSOMNIA SEVERITY INDEX AND DIARY-REPORTED SLEEP ONSET LATENCY, SLEEP EFFICIENCY, AND NUMBER OF NIGHTS WITH INSOMNIA WERE SIGNIFICANTLY IMPROVED AT POST-INTERVENTION VERSUS PRE-INTERVENTION (P < .05). OTHER SLEEP OUTCOMES (PITTSBURGH SLEEP QUALITY INDEX, EPWORTH SLEEPINESS SCALE, DIARY-REPORTED TOTAL SLEEP TIME AND WAKE AFTER SLEEP ONSET) SHOWED IMPROVEMENT ON MEAN SCORES AT POST-INTERVENTION, BUT THESE WERE NOT STATISTICALLY SIGNIFICANT. ACTIGRAPHIC SLEEP OUTCOMES WERE NOT SIGNIFICANTLY CHANGED. CONCLUSIONS: THIS STUDY SUPPORTS THE FEASIBILITY AND ACCEPTABILITY OF A STANDARDIZED EVENING YOGA PRACTICE FOR MIDDLE-AGED TO OLDER WOMEN WITH OA. PRELIMINARY EFFICACY FINDINGS SUPPORT FURTHER RESEARCH ON THIS PROGRAM AS A POTENTIAL TREATMENT OPTION FOR OA-RELATED INSOMNIA.	2011	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
20   50  29 A COMPARATIVE CONTROLLED TRIAL COMPARING THE EFFECTS OF YOGA AND WALKING FOR OVERWEIGHT AND OBESE ADULTS. BACKGROUND: WALKING AND YOGA HAVE BEEN INDEPENDENTLY EVALUATED FOR WEIGHT CONTROL; HOWEVER, THERE ARE VERY FEW STUDIES COMPARING THE 2 WITH RANDOMIZATION. MATERIAL AND METHODS: THE PRESENT STUDY COMPARED THE EFFECTS OF 90 MINUTES/DAY FOR 15 DAYS OF SUPERVISED YOGA OR SUPERVISED WALKING ON: (I) RELATED BIOCHEMISTRY, (II) ANTHROPOMETRIC VARIABLES, (III) BODY COMPOSITION, (IV) POSTURAL STABILITY, AND (V) BILATERAL HAND GRIP STRENGTH IN OVERWEIGHT AND OBESE PERSONS. SIXTY-EIGHT PARTICIPANTS, OF WHOM 5 WERE OVERWEIGHT (BMI >/=25 KG/M2) AND 63 WERE OBESE (BMI >/=30 KG/M2; GROUP MEAN AGE +/-S.D., 36.4+/-11.2 YEARS; 35 FEMALES), WERE RANDOMIZED AS 2 GROUPS - (I) A YOGA GROUP AND (II) A WALKING GROUP - GIVEN THE SAME DIET. RESULTS: ALL DIFFERENCES WERE PRE-POST CHANGES WITHIN EACH GROUP. BOTH GROUPS SHOWED A SIGNIFICANT (P<0.05; REPEATED MEASURES ANOVA, POST-HOC ANALYSES) DECREASE IN: BMI, WAIST CIRCUMFERENCE, HIP CIRCUMFERENCE, LEAN MASS, BODY WATER, AND TOTAL CHOLESTEROL. THE YOGA GROUP INCREASED SERUM LEPTIN (P<0.01) AND DECREASED LDL CHOLESTEROL (P<0.05). THE WALKING GROUP DECREASED SERUM ADIPONECTIN (P<0.05) AND TRIGLYCERIDES (P<0.05). CONCLUSIONS: BOTH YOGA AND WALKING IMPROVED ANTHROPOMETRIC VARIABLES AND SERUM LIPID PROFILE IN OVERWEIGHT AND OBESE PERSONS. THE POSSIBLE IMPLICATIONS ARE DISCUSSED.	2014