1 1319 121 HEART RATE VARIABILITY, FLOW, MOOD AND MENTAL STRESS DURING YOGA PRACTICES IN YOGA PRACTITIONERS, NON-YOGA PRACTITIONERS AND PEOPLE WITH METABOLIC SYNDROME. HEART RATE VARIABILITY (HRV) AND RESPIRATORY SINUS ARRHYTHMIA ARE DIRECTLY ASSOCIATED WITH AUTONOMIC FLEXIBILITY, SELF-REGULATION AND WELL-BEING, AND INVERSELY ASSOCIATED WITH PHYSIOLOGICAL STRESS, PSYCHOLOGICAL STRESS AND PATHOLOGY. YOGA ENHANCES AUTONOMIC ACTIVITY, MITIGATES STRESS AND BENEFITS STRESS-RELATED CLINICAL CONDITIONS, YET THE RELATIONSHIP BETWEEN AUTONOMIC ACTIVITY AND PSYCHOPHYSIOLOGICAL RESPONSES DURING YOGA PRACTICES AND STRESSFUL STIMULI HAS NOT BEEN WIDELY EXPLORED. THIS EXPERIMENTAL STUDY EXPLORED THE RELATIONSHIP BETWEEN HRV, MOOD STATES AND FLOW EXPERIENCES IN REGULAR YOGA PRACTITIONERS (YP), NON-YOGA PRACTITIONERS (NY) AND PEOPLE WITH METABOLIC SYNDROME (METS), DURING MENTAL ARITHMETIC STRESS TEST (MAST) AND VARIOUS YOGA PRACTICES. THE STUDY FOUND THAT THE MAST PLACED A CARDIO-AUTONOMIC BURDEN IN ALL PARTICIPANTS WITH THE YP GROUP SHOWING THE GREATEST REACTIVITY AND THE MOST RAPID RECOVERY, WHILE THE METS GROUP HAD SIGNIFICANTLY BLUNTED RECOVERY. THE YP GROUP ALSO REPORTED A HEIGHTENED EXPERIENCE OF FLOW AND POSITIVE MOOD STATES COMPARED TO NY AND METS GROUPS AS WELL AS HAVING A HIGHER VAGAL TONE DURING ALL RESTING CONDITIONS. THESE RESULTS SUGGEST YOGA PRACTITIONERS HAVE A GREATER HOMEOSTATIC CAPACITY AND AUTONOMIC, METABOLIC AND PHYSIOLOGICAL RESILIENCE. FURTHER STUDIES ARE NOW NEEDED TO DETERMINE IF REGULAR YOGA PRACTICE MAY IMPROVE AUTONOMIC FLEXIBILITY IN NON-YOGA PRACTITIONERS AND METABOLIC SYNDROME PATIENTS. CLINICAL TRIAL NO 'ACTRN 2614001075673'.	2016	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
2  875  21 EFFECT OF YOGA THERAPY ON PLASMA OXYTOCIN AND FACIAL EMOTION RECOGNITION DEFICITS IN PATIENTS OF SCHIZOPHRENIA. CONTEXT: YOGA THERAPY HAS BEEN DEMONSTRATED TO BE USEFUL IN TREATMENT OF NEGATIVE SYMPTOMS AND IMPROVING THE SOCIO-OCCUPATIONAL FUNCTIONING AND EMOTION RECOGNITION DEFICITS IN ANTIPSYCHOTIC-STABILIZED SCHIZOPHRENIA PATIENTS. OXYTOCIN HAS BEEN RECENTLY IMPLICATED IN SOCIAL COGNITION DEFICITS IN SCHIZOPHRENIA. THE EFFECT OF YOGA THERAPY ON OXYTOCIN LEVELS IN SCHIZOPHRENIA HAS NOT BEEN STUDIED. AIMS: THIS STUDY AIMED TO ASSESS THE EFFECT OF YOGA THERAPY ON SYMPTOMS, SOCIO-OCCUPATIONAL FUNCTIONING, FACIAL EMOTION RECOGNITION DEFICITS AND PLASMA OXYTOCIN LEVELS IN ANTIPSYCHOTIC STABILIZED SCHIZOPHRENIA PATIENTS. SETTINGS AND DESIGN: RANDOMIZED CONTROLLED STUDY ON 43 CONSENTING, MEDICATION STABILIZED PATIENTS WITH SCHIZOPHRENIA IN A TERTIARY PSYCHIATRIC CENTER USING YOGA INTERVENTION AND WAITLISTED GROUPS. MATERIALS AND METHODS: A TOTAL OF 43 SCHIZOPHRENIA PATIENTS WERE RANDOMIZED TO YOGA GROUP (N=15) OR WAITLIST GROUP (N=28). PATIENTS IN THE YOGA GROUP RECEIVED TRAINING IN A SPECIFIC YOGA THERAPY MODULE FOR SCHIZOPHRENIA. PATIENTS IN BOTH GROUPS WERE CONTINUED ON STABLE ANTIPSYCHOTIC MEDICATION. ASSESSMENTS INCLUDED SCALE FOR ASSESSMENT OF POSITIVE SYMPTOMS, SCALE FOR ASSESSMENT OF NEGATIVE SYMPTOMS, SOCIO-OCCUPATIONAL FUNCTIONING SCALE AND TOOL FOR RECOGNITION OF EMOTIONS IN NEUROPSYCHIATRIC DISORDERS (TRENDS) AND PLASMA OXYTOCIN LEVELS; PERFORMED AT BASELINE AND AT THE END OF 1 MONTH. RESULTS: A TOTAL OF 15 PATIENTS IN THE YOGA GROUP AND 12 IN WAITLIST GROUP COMPLETED THE STUDY. THE YOGA THERAPY GROUP SHOWED A SIGNIFICANT IMPROVEMENT IN SOCIO-OCCUPATIONAL FUNCTIONING, PERFORMANCE ON TRENDS (P<0.001) AND PLASMA INCREASE IN OXYTOCIN LEVELS (P=0.01) AS COMPARED WITH THE WAITLIST GROUP. CONCLUSION: THE STUDY SUPPORTED THE ROLE OF ADD-ON YOGA THERAPY IN MANAGEMENT OF SCHIZOPHRENIA AND DEMONSTRATED AN IMPROVEMENT IN ENDOGENOUS PLASMA OXYTOCIN LEVELS IN SCHIZOPHRENIA PATIENTS RECEIVING YOGA THERAPY.	2013	
                                                                                                                                                                                                                                                                                                                
3 1137  20 EFFICACY OF YOGA THERAPY FOR THE MANAGEMENT OF PSYCHOPATHOLOGY OF PATIENTS HAVING CHRONIC SCHIZOPHRENIA. BACKGROUND: THERE IS A LARGE BODY OF LITERATURE AND SCIENTIFIC DATA REGARDING THE EFFICACY OF PHARMACOLOGICAL AND PSYCHOSOCIAL INTERVENTIONS FOR SCHIZOPHRENIA, HOWEVER, STUDIES ON YOGA THERAPY IS SCANTY. YOGA IS A MEANS OF BALANCING AND HARMONIZING THE BODY, MIND AND EMOTION, AND FOR ENLIGHTENING THE MIND AND UPLIFTMENT OF THE TOTAL PERSONALITY. AIMS: THE PRESENT STUDY WAS CONDUCTED TO DETERMINE THE EFFICACY OF YOGA THERAPY AS AN ADJUNCTIVE THERAPY AND TO SEE ITS EFFECTS ON PSYCHOPATHOLOGY ON THE PATIENTS SUFFERING FROM CHRONIC SCHIZOPHRENIA. SETTINGS AND DESIGN: PRE- AND POST-TEST DESIGN WITH THE CONTROL GROUP. MATERIALS AND METHODS: IT IS A STUDY USING PURPOSIVE SAMPLING TECHNIQUE BY WHICH 30 CHRONIC SCHIZOPHRENIC PATIENTS WERE SELECTED AND 15 PATIENTS WERE RANDOMLY ASSIGNED TO YOGA THERAPY ALONG WITH PHARMACOTHERAPY (EXPERIMENTAL GROUP), AND 15 WERE ASSIGNED PHARMACOTHERAPY ALONE (CONTROL GROUP) AFTER THE BASELINE ASSESSMENT USING POSITIVE AND NEGATIVE SYNDROME SCALE (PANSS). THE YOGA GROUP ATTENDED YOGA THERAPY EVERYDAY FOR ABOUT 1(1/2) H INCLUDING MOTIVATIONAL AND FEEDBACK SESSION. RESULTS: AT THE END OF 1 MONTH POSTASSESSMENT WAS DONE, AND SCHIZOPHRENIC PATIENTS, WHO RECEIVED THE YOGIC INTERVENTION SHOWED BETTER RATING THAN THOSE IN PHARMACOTHERAPY ALONE ON PANSS VARIABLES. CONCLUSION: YOGA COULD BE A RIGHT CHOICE FOR IMPROVING PSYCHOPATHOLOGY RESULTING IN BETTER QUALITY OF LIFE ALONG WITH OTHER PHARMACOLOGICAL MANAGEMENT AND PSYCHOSOCIAL INTERVENTIONS.	2015	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
4 1920  30 ROLE OF YOGA AND MINDFULNESS IN SEVERE MENTAL ILLNESSES: A NARRATIVE REVIEW. BACKGROUND: YOGA HAS ITS ORIGIN FROM THE ANCIENT TIMES. IT IS AN INTEGRATION OF MIND, BODY, AND SOUL. BESIDES, MINDFULNESS EMPHASIZES FOCUSED AWARENESS AND ACCEPTING THE INTERNAL EXPERIENCES WITHOUT BEING JUDGEMENTAL. THESE TECHNIQUES OFFER A TRENDING NEW DIMENSION OF TREATMENT IN VARIOUS PSYCHIATRIC DISORDERS. AIMS: WE AIMED TO REVIEW THE STUDIES ON THE EFFICACY OF YOGA AND MINDFULNESS AS A TREATMENT MODALITY IN SEVERE MENTAL ILLNESSES (SMIS). SMI INCLUDES SCHIZOPHRENIA, MAJOR DEPRESSIVE DISORDER (MDD), AND BIPOLAR DISORDER (BD). METHODS: WE CONDUCTED A LITERATURE SEARCH USING PUBMED, GOOGLE SCHOLAR, AND COCHRANE LIBRARY WITH THE SEARCH TERMS "YOGA," "MEDITATION," "BREATHING EXERCISES," "MINDFULNESS," "SCHIZOPHRENIA SPECTRUM AND OTHER PSYCHOTIC DISORDERS," "DEPRESSIVE DISORDER," AND "BIPOLAR DISORDER" FOR THE LAST 10-YEAR PERIOD. WE ALSO INCLUDED RELEVANT ARTICLES FROM THE CROSS-REFERENCES. RESULTS: WE FOUND THAT ASANAS AND PRANAYAMA ARE THE MOST COMMONLY STUDIED FORMS OF YOGA FOR SCHIZOPHRENIA. THESE STUDIES FOUND A REDUCTION IN GENERAL PSYCHOPATHOLOGY RATINGS AND AN IMPROVEMENT IN COGNITION AND FUNCTIONING. SOME STUDIES ALSO FOUND MODEST BENEFITS IN NEGATIVE AND POSITIVE SYMPTOMS. MINDFULNESS HAS NOT BEEN EXTENSIVELY TRIED, BUT THE AVAILABLE EVIDENCE HAS SHOWN BENEFITS IN IMPROVING PSYCHOTIC SYMPTOMS, IMPROVING LEVEL OF FUNCTIONING, AND AFFECT REGULATION. IN MDD, BOTH YOGA AND MINDFULNESS HAVE DEMONSTRATED SIGNIFICANT BENEFIT IN REDUCING THE SEVERITY OF DEPRESSIVE SYMPTOMS. THERE IS VERY SPARSE DATA WITH RESPECT TO BD. CONCLUSION: BOTH YOGA AND MINDFULNESS INTERVENTIONS APPEAR TO BE USEFUL AS AN ADJUNCT IN THE TREATMENT OF SMI. STUDIES HAVE SHOWN IMPROVEMENT IN THE PSYCHOPATHOLOGY, ANXIETY, COGNITION, AND FUNCTIONING OF PATIENTS WITH SCHIZOPHRENIA. SIMILARLY, BOTH THE TECHNIQUES HAVE BEEN ESTABLISHED AS AN EFFECTIVE ADJUVANT IN MDD. HOWEVER, MORE RIGOROUSLY DESIGNED AND LARGER TRIALS MAY BE NECESSARY, SPECIFICALLY FOR BD.	2019	
                                                                                                                                                                                                                                                                                                               
5 2067  26 THE CONSCIOUSNESS STATE OF TRADITIONAL NIDRA YOGA/MODERN YOGA NIDRA: PHENOMENOLOGICAL CHARACTERIZATION AND PRELIMINARY INSIGHTS FROM AN EEG STUDY. NIDRA YOGA IS AN ANCIENT YOGIC PRACTICE CAPABLE OF INDUCING ALTERED STATES OF CONSCIOUSNESS CHARACTERIZED BY DEEP RELAXATION, STRONG CONCENTRATION, ACUTE SELF-AWARENESS, AND JOY. IN MODERN CONTEMPLATIVE NEUROSCIENCE LANGUAGE, IT IS KNOWN BY THE NAME YOGA NIDRA, AND FEW STUDIES HAVE INVESTIGATED ITS PHENOMENOLOGICAL AND PSYCHOPHYSIOLOGICAL EFFECTS. SIX HEALTHY VOLUNTEERS (FOUR FEMALES AGED 31-74) PERFORMED 12 YOGA NIDRA SESSIONS GUIDED BY AN EXPERT DURING A 6-DAY RETREAT. EACH SESSION CONSISTED OF 10 MINUTES IN A RESTING STATE (BASELINE) FOLLOWED BY 2 HOURS OF YOGA NIDRA. PSYCHOMETRIC DATA REGARDING DISSOCIATIVE EXPERIENCES (CLINICIAN ADMINISTERED DISSOCIATIVE STATES SCALE) AND THE STATE OF CONSCIOUSNESS (PHENOMENOLOGY OF CONSCIOUSNESS INVENTORY) WERE COLLECTED AFTER BASELINE AND YOGA NIDRA, WHILE HIGH-DENSITY EEG WAS RECORDED DURING THE ENTIRE SESSION. DURING NIDRA SESSIONS, NO SLEEP HALLMARKS (I.E., K-COMPLEXES AND SLEEP SPINDLES) WERE DETECTED BY THE EEG IN ANY SUBJECT. PSYCHOMETRIC DATA WE RE ANALYZED USING A WILCOXON SIGNED-RANK TEST CORRECTED WITH THE FALSE DISCOVERY RATE APPROACH FOR MULTIPLE COMPARISONS. COMPARED TO BASELINE, YOGA NIDRA PRACTICE WAS RELATED TO: (1) INCREASED DISSOCIATIVE EFFECTS (P = 0.022); (2) PERCEPTION OF BEING IN AN ALTERED STATE OF CONSCIOUSNESS (P = 0.026); (3) ALTERATIONS IN PERCEIVED BODY IMAGE (P = 0.022); (4) INCREASED "MEANINGFULNESS" ATTRIBUTED TO THE EXPERIENCE (P = 0.026); (5) REDUCED RATIONAL THINKING (P = 0.029); AND (6) REDUCED VOLITIONAL THOUGHT CONTROL (P = 0.026). FIRST-PERSON EXPERIENCE IS DISCUSSED IN RELATION TO DESCRIPTIVE EEG POWER SPECTRAL DENSITY ANALYSIS, WHICH WAS PERFORMED IN ONE SUBJECT BECAUSE OF SEVERE EEG ARTIFACTS IN THE OTHER RECORDINGS; THAT SUBJECT SHOWED, COMPARED TO BASELINE: (1) EARLY INCREASE OF ALPHA AND BETA POWER, FOLLOWED BY A PROGRESSIVE WIDESPREAD REDUCTION; (2) WIDESPREAD EARLY INCREASE OF THETA POWER, FOLLOWED BY A PROGRESSIVE REDUCTION; AND (3) WIDESPREAD INCREASE OF GAMMA POWER IN THE LATEST STAGES. THE PRESENT PRELIMINARY RESULTS ENRICH THE KNOWLEDGE OF YOGA NIDRA, ELUCIDATING ITS PHENOMENOLOGY AND SUGGESTING SOME PSYCHOPHYSIOLOGICAL CORRELATES THAT FUTURE STUDIES MAY ADDRESS.	2021	

6  872  26 EFFECT OF YOGA THERAPY ON FACIAL EMOTION RECOGNITION DEFICITS, SYMPTOMS AND FUNCTIONING IN PATIENTS WITH SCHIZOPHRENIA. OBJECTIVE: FACIAL EMOTION RECOGNITION DEFICITS HAVE BEEN CONSISTENTLY DEMONSTRATED IN SCHIZOPHRENIA AND CAN IMPAIR SOCIO-OCCUPATIONAL FUNCTIONING IN THESE PATIENTS. TREATMENTS TO IMPROVE THESE DEFICITS IN ANTIPSYCHOTIC-STABILIZED PATIENTS HAVE NOT BEEN WELL STUDIED. YOGA THERAPY HAS BEEN DESCRIBED TO IMPROVE FUNCTIONING IN VARIOUS DOMAINS IN SCHIZOPHRENIA; HOWEVER, ITS EFFECT ON FERD IS NOT KNOWN. METHOD: ANTIPSYCHOTIC-STABILIZED PATIENTS RANDOMIZED TO RECEIVE YOGA (N=27), EXERCISE (N=17) OR WAITLIST GROUP (N=22) WERE ASSESSED AT BASELINE, 2ND MONTH, AND 4TH MONTH OF FOLLOW-UP BY RATERS BLIND TO GROUP STATUS. ASSESSMENTS INCLUDED POSITIVE AND NEGATIVE SYNDROME SCALE (PANSS), SOCIO-OCCUPATIONAL FUNCTIONING SCALE (SOFS), AND TOOL FOR RECOGNITION OF EMOTIONS IN NEUROPSYCHIATRIC DISORDERS (TRENDS). RESULTS: THERE WAS A SIGNIFICANT POSITIVE CORRELATION BETWEEN BASELINE FERD AND SOCIO-OCCUPATIONAL FUNCTIONING (R=0.3, P=0.01). PAIRED SAMPLES T TEST SHOWED SIGNIFICANT IMPROVEMENT IN POSITIVE AND NEGATIVE SYMPTOMS, SOCIO-OCCUPATIONAL FUNCTIONING AND PERFORMANCE ON TRENDS (P<0.05) IN THE YOGA GROUP, BUT NOT IN THE OTHER TWO GROUPS. MAXIMUM IMPROVEMENT OCCURRED AT THE END OF 2 MONTHS, AND IMPROVEMENT IN POSITIVE AND NEGATIVE SYMPTOMS PERSISTED AT THE END OF 4 MONTHS. CONCLUSION: YOGA THERAPY CAN BE A USEFUL ADD-ON TREATMENT TO IMPROVE PSYCHOPATHOLOGY, FERD, AND SOCIO-OCCUPATIONAL FUNCTIONING IN ANTIPSYCHOTIC-STABILIZED PATIENTS WITH SCHIZOPHRENIA.	2011	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
7 2014  32 SUDARSHAN KRIYA YOGA: BREATHING FOR HEALTH. BREATHING TECHNIQUES ARE REGULARLY RECOMMENDED FOR RELAXATION, STRESS MANAGEMENT, CONTROL OF PSYCHOPHYSIOLOGICAL STATES, AND TO IMPROVE ORGAN FUNCTION. YOGIC BREATHING, DEFINED AS A MANIPULATION OF BREATH MOVEMENT, HAS BEEN SHOWN TO POSITIVELY AFFECT IMMUNE FUNCTION, AUTONOMIC NERVOUS SYSTEM IMBALANCES, AND PSYCHOLOGICAL OR STRESS-RELATED DISORDERS. THE AIM OF THIS STUDY WAS TO ASSESS AND PROVIDE A COMPREHENSIVE REVIEW OF THE PHYSIOLOGICAL MECHANISMS, THE MIND-BODY CONNECTION, AND THE BENEFITS OF SUDARSHAN KRIYA YOGA (SKY) IN A WIDE RANGE OF CLINICAL CONDITIONS. VARIOUS ONLINE DATABASES SEARCHED WERE MEDLINE, PSYCHINFO, EMBASE, AND GOOGLE SCHOLAR. ALL THE RESULTS WERE CAREFULLY SCREENED AND ARTICLES ON SKY WERE SELECTED. THE REFERENCES FROM THESE ARTICLES WERE CHECKED TO FIND ANY OTHER POTENTIALLY RELEVANT ARTICLES. SKY, A UNIQUE YOGIC BREATHING PRACTICE, INVOLVES SEVERAL TYPES OF CYCLICAL BREATHING PATTERNS, RANGING FROM SLOW AND CALMING TO RAPID AND STIMULATING. THERE IS MOUNTING EVIDENCE TO SUGGEST THAT SKY CAN BE A BENEFICIAL, LOW-RISK, LOW-COST ADJUNCT TO THE TREATMENT OF STRESS, ANXIETY, POST-TRAUMATIC STRESS DISORDER, DEPRESSION, STRESS-RELATED MEDICAL ILLNESSES, SUBSTANCE ABUSE, AND REHABILITATION OF CRIMINAL OFFENDERS.	2013	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
8 2441  24 YOGA AND SCHIZOPHRENIA-A COMPREHENSIVE ASSESSMENT OF NEUROPLASTICITY: PROTOCOL FOR A SINGLE BLIND RANDOMIZED CONTROLLED STUDY OF YOGA IN SCHIZOPHRENIA. INTRODUCTION: SCHIZOPHRENIA IS ONE OF THE MOST SEVERE MENTAL DISORDERS WITH A PREVALENCE OF ABOUT 1% AND A LEADING CAUSE OF DISABILITY AMONG YOUNG ADULTS. PHARMACOTHERAPY IS THE MAINSTAY IN THE MANAGEMENT OF SCHIZOPHRENIA. HOWEVER, EVEN WITH THE BEST OF MEDICATION, SEVERAL PROBLEMS LIKE REFRACTORINESS, NEGATIVE SYMPTOMS, FREQUENT RELAPSES, AND COGNITIVE IMPAIRMENTS PERSIST. METHODS: THIS IS A RANDOMIZED-CONTROLLED CLINICAL STUDY INCLUDING PATIENTS FROM AN URBAN TERTIARY HOSPITAL AND A SEMI-URBAN COMMUNITY CENTER, WITH A BETWEEN-GROUP, REPEATED-MEASURES, LONGITUDINAL DESIGN. THIS STUDY WILL RECRUIT 160 PATIENTS WITH DSM 5 DIAGNOSIS OF SCHIZOPHRENIA WHO ARE ON STABLE MEDICATION FOR A MINIMUM OF 6 WEEKS; THEY WILL BE RANDOMLY ASSIGNED INTO 2 ARMS VIZ., YOGA THERAPY (YT), AND TREATMENT-AS-USUAL (TAU) WITH 80 PATIENTS IN EACH ARM. PARTICIPANTS WILL UNDERGO CLINICAL, LABORATORY, AND RADIOLOGICAL ASSESSMENTS AT BASELINE AND AT INTERVALS OF 1 MONTH, 3 MONTHS, AND 6 MONTHS FROM THE BASELINE. IT IS HYPOTHESIZED THAT YOGA WILL IMPROVE PSYCHOPATHOLOGY AND EMOTION PROCESSING, INCREASE SERUM BRAIN DERIVED NEUROTROPHIC FACTOR (BDNF) AND PLASMA OXYTOCIN LEVELS AND EFFECT CHANGES IN CEREBRAL ACTIVATION IN AREAS OF THE BRAIN ASSOCIATED WITH SCHIZOPHRENIA. DISCUSSION: THIS STUDY AIMS TO MEASURE THE EFFICACY OF A YOGA-BASED INTERVENTION AS AN ADJUNCT IN PATIENTS WITH SCHIZOPHRENIA AS WELL AS THE MECHANISMS OF THESE EFFECTS. TRIAL REGISTRATION: REGISTERED RETROSPECTIVELY WITH CLINICAL TRIAL REGISTRY - INDIA (CTRI) WITH REGISTRATION NUMBER CTRI/2017/08/009219.	2019	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
9   76  19 A HEURISTIC MODEL LINKING YOGA PHILOSOPHY AND SELF-REFLECTION TO EXAMINE UNDERLYING MECHANISMS OF ADD-ON YOGA TREATMENT IN SCHIZOPHRENIA. PRELIMINARY EVIDENCE SUGGESTS EFFICACY OF YOGA AS ADD-ON TREATMENT FOR SCHIZOPHRENIA, BUT THE UNDERLYING MECHANISM BY WHICH YOGA IMPROVES THE SYMPTOMS OF SCHIZOPHRENIA IS NOT COMPLETELY UNDERSTOOD. YOGA IMPROVES SELF-REFLECTION IN HEALTHY INDIVIDUALS, AND SELF-REFLECTION ABNORMALITIES ARE TYPICALLY SEEN IN SCHIZOPHRENIA. HOWEVER, WHETHER YOGA TREATMENT IMPROVES IMPAIRMENTS IN SELF-REFLECTION TYPICALLY SEEN IN PATIENTS WITH SCHIZOPHRENIA IS NOT EXAMINED. THIS PAPER DISCUSSES THE POTENTIAL MECHANISM OF YOGA IN THE TREATMENT OF SCHIZOPHRENIA AND PROPOSES A TESTABLE HYPOTHESIS FOR FURTHER EMPIRICAL STUDIES. IT IS PROPOSED THAT SELF-REFLECTION ABNORMALITIES IN SCHIZOPHRENIA IMPROVE WITH YOGA AND THE NEUROBIOLOGICAL CHANGES ASSOCIATED WITH THIS CAN BE EXAMINED USING EMPIRICAL BEHAVIOURAL MEASURES AND NEUROIMAGING MEASURES SUCH AS MAGNETIC RESONANCE IMAGING.	2016	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
10 1879  36 REASONS, YEARS AND FREQUENCY OF YOGA PRACTICE: EFFECT ON EMOTION RESPONSE REACTIVITY. YOGA PRACTICE, EVEN IN THE SHORT TERM, IS SUPPOSED TO ENHANCE WELLBEING AND COUNTERACT PSYCHOPATHOLOGY THROUGH MODIFICATION OF EMOTION REACTIVITY. YOGA TEACHES THAT EMOTIONAL RESPONSES MAY BE LESS PRONOUNCED WITH LONGER AND MORE FREQUENT PRACTICE, AND POTENTIALLY WHEN PEOPLE PERFORM YOGA FOR MENTAL RATHER THAN PHYSICAL REASONS. WE TESTED 36 YOGA PRACTITIONERS OF VARYING EXPERIENCE (BETWEEN 6 MONTHS AND 11 YEARS OF PRACTICE). WE ASSESSED PARTICIPANTS' SELF-REPORTED EMOTIONAL EXPERIENCE AND PERIPHERAL PHYSIOLOGICAL REACTIONS (HEART RATE, SKIN CONDUCTANCE, RESPIRATION) WHEN SEEING POSITIVE AND NEGATIVE PICTURES. RESULTS WERE ANALYZED AS A FUNCTION OF THE YEARS OF, FREQUENCY OF, AND REASONS FOR YOGA PRACTICE. WE FOUND A HEART RATE INCREASE WITH THE DEGREE PARTICIPANTS PERFORMED YOGA FOR MENTAL REASONS. IN ADDITION, YEARS OF YOGA PRACTICE WERE SIGNIFICANTLY ASSOCIATED WITH REDUCED ABDOMINAL RESPIRATORY RATE WHEN FACING NEGATIVE PICTURES, SPEAKING IN FAVOR OF REDUCED AROUSAL WITH YOGA EXPERIENCE. FINALLY, REGARDING FREQUENCY OF PRACTICE, A HIGHER FREQUENCY IN THE LAST MONTH WAS LINKED TO LESS NEGATIVE AND POSITIVE EXPERIENCES AS WELL AS A REDUCED ABDOMINAL RESPIRATORY AMPLITUDE WHEN VIEWING POSITIVE PICTURES. ALTOGETHER, THESE RESULTS DEMONSTRATE THAT INTENSE SHORT-TERM YOGA PRACTICE MIGHT RELATE TO A (I) DECREASE IN THE INTENSITY OF SELF-REPORTED EMOTIONAL EXPERIENCES AND (II) DEEPENED RESPIRATION. SHORT-TERM EFFECTS MIGHT BE SHAPED BY WHAT PARTICIPANTS EXPECT AS PRACTICE BENEFITS. HOWEVER, SEVERAL YEARS OF PRACTICE MIGHT BE NEEDED TO DECREASE RESPIRATORY AROUSAL IN THE FACE OF NEGATIVE SITUATIONS, WHICH LIKELY IS A MANIFESTATION OF AN EVOLUTION IN THE EMOTION REGULATION PROCESS.	2018	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
11 1882  26 REDUCING ALLOSTATIC LOAD IN DEPRESSION AND ANXIETY DISORDERS: PHYSICAL ACTIVITY AND YOGA PRACTICE AS ADD-ON THERAPIES. THE ALLOSTATIC LOAD (AL) INDEX CONSTITUTES A USEFUL TOOL TO OBJECTIVELY ASSESS THE BIOLOGICAL ASPECTS OF CHRONIC STRESS IN CLINICAL PRACTICE. AL INDEX HAS BEEN POSITIVELY CORRELATED WITH CUMULATIVE CHRONIC STRESS (PHYSICAL AND PSYCHOSOCIAL STRESSORS) AND WITH A HIGH RISK TO DEVELOP PATHOLOGICAL CONDITIONS (E.G., METABOLIC SYNDROME, CARDIOVASCULAR PATHOLOGY, INFLAMMATORY DISORDERS) AND THE SO-CALLED STRESS-RELATED PSYCHIATRIC DISORDERS, INCLUDING ANXIETY AND DEPRESSIVE DISORDERS. CHRONIC STRESS HAS NEGATIVE EFFECTS ON BRAIN NEUROPLASTICITY, ESPECIALLY ON HIPPOCAMPAL NEUROGENESIS AND THESE EFFECTS MAY BE REVERSED BY ANTIDEPRESSANT TREATMENTS. SEVERAL EVIDENCES INDICATE THAT NON-PHARMACOLOGICAL INTERVENTIONS BASED ON PHYSICAL ACTIVITY AND YOGA PRACTICE MAY ADD SYNERGIZING BENEFITS TO CLASSICAL TREATMENTS (ANTIDEPRESSANT AND BENZODIAZEPINES) FOR DEPRESSION AND ANXIETY, REDUCING THE NEGATIVE EFFECTS OF CHRONIC STRESS. THE AIM OF THIS REVIEW IS TO PROVIDE A GENERAL OVERVIEW OF CURRENT KNOWLEDGE ON AL AND CHRONIC STRESS IN RELATION TO DEPRESSION AND ANXIETY, PHYSICAL ACTIVITY AND YOGA PRACTICE.	2020	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
12 1424  25 IMPROVEMENT IN PHYSIOLOGICAL AND PSYCHOLOGICAL PARAMETERS AFTER 6 MONTHS OF YOGA PRACTICE. YOGA IS BELIEVED TO HAVE BENEFICIAL EFFECTS ON COGNITION, ATTENUATION OF EMOTIONAL INTENSITY AND STRESS REDUCTION. PREVIOUS STUDIES WERE MAINLY PERFORMED ON EASTERN EXPERIENCED PRACTITIONERS OR UNHEALTHY SUBJECTS UNDERGOING CONCOMITANT CONVENTIONAL THERAPIES. FURTHER INVESTIGATION IS NEEDED ON THE EFFECTS OF YOGA PER SE, AS WELL AS ITS POSSIBLE PREVENTIVE BENEFITS ON HEALTHY SUBJECTS. WE INVESTIGATED THE EFFECTS OF YOGA ON MEMORY AND PSYCHOPHYSIOLOGICAL PARAMETERS RELATED TO STRESS, COMPARING YOGA PRACTICE AND CONVENTIONAL PHYSICAL EXERCISES IN HEALTHY MEN (PREVIOUSLY YOGA-NAIVE). MEMORY TESTS, SALIVARY CORTISOL LEVELS AND STRESS, ANXIETY, AND DEPRESSION INVENTORIES WERE ASSESSED BEFORE AND AFTER 6 MONTHS OF PRACTICE. YOGA PRACTITIONERS SHOWED IMPROVEMENT OF THE MEMORY PERFORMANCE, AS WELL AS IMPROVEMENTS IN PSYCHOPHYSIOLOGICAL PARAMETERS. THE PRESENT RESULTS SUGGEST THAT REGULAR YOGA PRACTICE CAN IMPROVE ASPECTS OF COGNITION AND QUALITY OF LIFE FOR HEALTHY INDIVIDUALS. AN INDIRECT INFLUENCE OF EMOTIONAL STATE ON COGNITIVE IMPROVEMENT PROMOTED BY YOGA PRACTICE CAN BE PROPOSED.	2012	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
13  644  22 DOES YOGA HAVE A ROLE IN SCHIZOPHRENIA MANAGEMENT? PURPOSE OF REVIEW: TO REVIEW THE EFFICACY OF ADD-ON YOGA THERAPY IN IMPROVING SYMPTOMS OF SCHIZOPHRENIA AND QUALITY OF LIFE AND EXAMINE THE POSSIBLE UNDERLYING BIOLOGICAL MECHANISMS OF YOGA IN SCHIZOPHRENIA. RECENT FINDINGS: QUALITY OF LIFE, COGNITIVE SYMPTOMS, AND NEGATIVE SYMPTOMS HAVE BEEN FOUND TO IMPROVE WITH ADD-ON YOGA THERAPY IN SCHIZOPHRENIA (POOLED MEAN EFFECT SIZE 0.8, 0.6, AND 0.4, RESPECTIVELY). YOGA ALSO SEEMS TO HAVE A SMALL EFFECT ON IMPROVING POSITIVE SYMPTOMS. LESS EXPLORED AREAS INCLUDE ADVERSE EFFECTS OF YOGA ITSELF AS WELL AS ITS EFFECTS ON ANTIPSYCHOTIC-INDUCED COMPLICATIONS. PRELIMINARY FINDINGS SUGGEST THAT THE EFFECTS OF YOGA MAY BE MEDIATED BY NEUROHORMONAL MECHANISMS AND FUNCTIONAL CHANGES IN BRAIN ACTIVITY. ADD-ON YOGA THERAPY IS A POTENTIAL TREATMENT OPTION FOR IMPROVING QUALITY OF LIFE, COGNITIVE SYMPTOMS, AND NEGATIVE SYMPTOMS IN SCHIZOPHRENIA. FUTURE STUDIES SHOULD EXPLORE EFFICACY IN MULTICENTRIC TRIALS AS WELL AS POSSIBLE NEUROBIOLOGICAL CHANGES UNDERLYING THE EFFECTS.	2020	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
14 1745  21 PHYSIOLOGICAL CHANGES IN SPORTS TEACHERS FOLLOWING 3 MONTHS OF TRAINING IN YOGA. 1. THIS REPORT SHOWS THAT IN A GROUP OF 40 PHYSICAL EDUCATION TEACHERS WHO ALREADY HAD AN AVERAGE OF 8.9 YEARS PHYSICAL TRAINING, 3 MONTHS OF YOGIC TRAINING PRODUCED SIGNIFICANT IMPROVEMENT IN GENERAL HEALTH (IN TERMS OF BODY WEIGHT AND BP REDUCTION AND IMPROVED LUNG FUNCTIONS). 2. THERE WAS ALSO EVIDENCE OF DECREASED AUTONOMIC AROUSAL AND MORE OF PSYCHOPHYSIOLOGICAL RELAXATION (HEART RATE AND RESPIRATORY RATE REDUCTION), AND IMPROVED SOMATIC STEADINESS (DECREASED ERRORS IN THE STEADINESS TEST). 3. THE CHANGES AT THE END OF 3 MONTHS IN VOLAR GSR IN DIFFERENT DIRECTIONS (INCREASE/DECREASE/NO CHANGE), DEPENDING ON THE INITIAL VALUES, SUGGESTS THAT PRACTISING YOGA MAY HELP TO BRING ABOUT A BALANCE IN DIFFERENT AUTONOMIC FUNCTIONS, SO THAT FUNCTIONING IS OPTIMISED.	1993	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
15 2776  23 YOGA SCHOOL OF THOUGHT AND PSYCHIATRY: THERAPEUTIC POTENTIAL. YOGA IS A TRADITIONAL LIFE-STYLE PRACTICE USED FOR SPIRITUAL REASONS. HOWEVER, THE PHYSICAL COMPONENTS LIKE THE ASANAS AND PRANAYAAMAS HAVE DEMONSTRATED PHYSIOLOGICAL AND THERAPEUTIC EFFECTS. THERE IS EVIDENCE FOR YOGA AS BEING A POTENT ANTIDEPRESSANT THAT MATCHES WITH DRUGS. IN DEPRESSIVE DISORDER, YOGA 'CORRECTS' AN UNDERLYING COGNITIVE PHYSIOLOGY. IN SCHIZOPHRENIA PATIENTS, YOGA HAS BENEFITS AS AN ADD-ON INTERVENTION IN PHARMACOLOGICALLY STABILIZED SUBJECTS. THE EFFECTS ARE PARTICULARLY NOTABLE ON NEGATIVE SYMPTOMS. YOGA ALSO HELPS TO CORRECT SOCIAL COGNITION. YOGA CAN BE INTRODUCED EARLY IN THE TREATMENT OF PSYCHOSIS WITH SOME BENEFITS. ELEVATION OF OXYTOCIN MAY BE A MECHANISM OF YOGA EFFECTS IN SCHIZOPHRENIA. CERTAIN COMPONENTS OF YOGA HAVE DEMONSTRATED NEUROBIOLOGICAL EFFECTS SIMILAR TO THOSE OF VAGAL STIMULATION, INDICATING THIS (INDIRECT OR AUTOGENOUS VAGAL STIMULATION) AS A POSSIBLE MECHANISM OF ITS ACTION. IT IS TIME, PSYCHIATRISTS EXPLOITED THE BENEFITS IF YOGA FOR A COMPREHENSIVE CARE IN THEIR PATIENTS.	2013	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
16 2436  21 YOGA AND PSYCHIATRIC DISORDERS: A REVIEW OF BIOMARKER EVIDENCE. TRADITIONALLY, YOGA HAS BEEN USED AS A MEANS FOR SPIRITUAL GROWTH BUT OVER THE PAST TWO DECADES OR SO ITS THERAPEUTIC BENEFITS IN PSYCHIATRIC DISORDERS HAVE BEEN SCIENTIFICALLY EXPLORED. YOGA HAS BEEN SHOWN TO BE USEFUL AS A MONO-THERAPY IN MILD TO MODERATE DEPRESSION AND AS AN ADJUVANT IN SEVERAL PSYCHIATRIC DISORDERS INCLUDING SCHIZOPHRENIA, ANXIETY DISORDERS, SUBSTANCE USE DISORDERS AND MILD COGNITIVE IMPAIRMENT. FURTHERMORE, SYSTEMATIC ATTEMPTS HAVE BEEN MADE TO UNDERSTAND THE BIOLOGICAL CORRELATES OF YOGA IN THESE PSYCHIATRIC DISORDERS. GIVEN THAT NO PSYCHIATRIC DISORDER HAS STRONG AND ESTABLISHED BIOMARKERS, IT IS INTERESTING THAT PRELIMINARY RESEARCH HAS DEMONSTRATED SIGNIFICANT CHANGES IN CERTAIN IMPORTANT BIOMARKERS FOLLOWING REGULAR YOGA PRACTICE. IN THIS BRIEF REVIEW, WE PROVIDE AN UPDATE ON THE EFFECTS OF YOGA ON BIOCHEMICAL, NEURO-PHYSIOLOGICAL AND NEURO-IMAGING RELATED BIO-MARKERS IN PSYCHIATRIC DISORDERS. ALTHOUGH FINDINGS AND TRENDS ARE PROMISING, MUCH MORE RESEARCH IS WARRANTED TO ESTABLISH A DEFINITE BIOLOGICAL BASIS FOR YOGA IN PSYCHIATRY.	2021	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
17 1837  26 PSYCHOPHYSIOLOGICAL EFFECTS OF YOGA ON STRESS IN COLLEGE STUDENTS. COLLEGE STUDENTS ARE VULNERABLE TO A CRITICAL PERIOD IN DEVELOPMENTAL MATURATION, FACING RIGOROUS ACADEMIC WORK, AND LEARNING HOW TO FUNCTION INDEPENDENTLY. PHYSICAL ACTIVITIES SUCH AS RUNNING AND BICYCLING HAVE BEEN SHOWN TO IMPROVE MOOD AND RELIEVE STRESS. HOWEVER, COLLEGE STUDENTS OFTEN HAVE LOW LEVELS OF PHYSICAL ACTIVITY. YOGA IS AN ANCIENT PHYSICAL AND MENTAL ACTIVITY THAT AFFECTS MOOD AND STRESS. HOWEVER, STUDIES EXAMINING THE PSYCHOPHYSIOLOGICAL EFFECTS OF YOGA ARE RARE IN PEER-REVIEWED JOURNALS. THE AIM OF THIS STUDY IS TO ESTABLISH PRELIMINARY EVIDENCE FOR THE PSYCHOPHYSIOLOGICAL EFFECTS OF YOGA ON STRESS IN YOUNG-ADULT COLLEGE STUDENTS. THE PRESENT STUDY SUGGESTS THAT YOGA HAS POSITIVE EFFECTS ON A PSYCHOPHYSIOLOGICAL LEVEL THAT LEADS TO DECREASED LEVELS OF STRESS IN COLLEGE STUDENT. FURTHER RESEARCH IS NEEDED TO EXAMINE THE EXTENT TO WHICH DIFFERENT TYPES OF YOGIC PRACTICES ADDRESS THE NEEDS OF DIFFERENT COLLEGE SUBPOPULATIONS (E.G., OVERWEIGHT, SEDENTARY, AND SMOKERS).	2018	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
18 1590  16 MEDITATION AND YOGA CAN MODULATE BRAIN MECHANISMS THAT AFFECT BEHAVIOR AND ANXIETY-A MODERN SCIENTIFIC PERSPECTIVE. MEDITATION AND YOGA TECHNIQUES ARE RECEIVING INCREASED ATTENTION THROUGHOUT THE WORLD, DUE TO THE ACCUMULATION OF EVIDENCE BASED RESEARCH THAT PROVES THE DIRECT AND INDIRECT BENEFITS OF SUCH PRACTICES. BASED ON STUDIES CONDUCTED SO FAR, IT HAS BEEN FOUND THAT THE PRACTICE OF MEDITATION TRIGGERS NEUROTRANSMITTERS THAT MODULATE PSYCHOLOGICAL DISORDERS SUCH AS ANXIETY. THIS PAPER WILL REVIEW THE PSYCHOLOGICAL EFFECTS OF THE PRACTICE OF MEDITATION, THE ROLE OF NEUROTRANSMITTERS, AND STUDIES USING EEG AND FMRI.	2015	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
19  226  28 A SYSTEMATIC REVIEW OF RANDOMISED CONTROL TRIALS ON THE EFFECTS OF YOGA ON STRESS MEASURES AND MOOD. STRESS RELATED DISORDERS SUCH AS DEPRESSION AND ANXIETY ARE LEADING SOURCES OF DISABILITY WORLDWIDE, AND CURRENT TREATMENT METHODS SUCH AS CONVENTIONAL ANTIDEPRESSANT MEDICATIONS ARE NOT BENEFICIAL FOR ALL INDIVIDUALS. THERE IS EVIDENCE THAT YOGA HAS MOOD-ENHANCING PROPERTIES POSSIBLY RELATED TO ITS INHIBITORY EFFECTS ON PHYSIOLOGICAL STRESS AND INFLAMMATION, WHICH ARE FREQUENTLY ASSOCIATED WITH AFFECTIVE DISORDERS. HOWEVER THE BIOLOGICAL MECHANISMS VIA WHICH YOGA EXERTS ITS THERAPEUTIC MOOD-MODULATING EFFECTS ARE LARGELY UNKNOWN. THIS SYSTEMATIC REVIEW INVESTIGATES THE EFFECTS OF YOGA ON SYMPATHETIC NERVOUS SYSTEM AND HYPOTHALAMIC PITUITARY ADRENAL AXIS REGULATION MEASURES. IT FOCUSES ON STUDIES COLLECTING PHYSIOLOGICAL PARAMETERS SUCH AS BLOOD PRESSURE, HEART RATE, CORTISOL, PERIPHERAL CYTOKINE EXPRESSION AND/OR STRUCTURAL AND FUNCTIONAL BRAIN MEASURES IN REGIONS INVOLVED IN STRESS AND MOOD REGULATION. OVERALL THE 25 RANDOMISED CONTROL STUDIES DISCUSSED PROVIDE PRELIMINARY EVIDENCE TO SUGGEST THAT YOGA PRACTICE LEADS TO BETTER REGULATION OF THE SYMPATHETIC NERVOUS SYSTEM AND HYPOTHALAMIC-PITUITARY-ADRENAL SYSTEM, AS WELL AS A DECREASE IN DEPRESSIVE AND ANXIOUS SYMPTOMS IN A RANGE OF POPULATIONS. FURTHER RESEARCH IS WARRANTED TO CONFIRM THESE PRELIMINARY FINDINGS AND FACILITATE IMPLEMENTATION IN CLINICAL SETTINGS.	2015	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
20 2009  33 SUBJECTIVE SLEEP QUALITY AND HORMONAL MODULATION IN LONG-TERM YOGA PRACTITIONERS. YOGA REPRESENTS A FASCINATING MIND-BODY APPROACH, WHEREIN BODY MOVEMENTS (ASANA), BREATHING EXERCISES (PRANAYAMA) AND MEDITATION ARE INTEGRATED INTO A SINGLE MULTIDIMENSIONAL PRACTICE. NUMEROUS BENEFICIAL MENTAL AND PHYSICAL EFFECTS HAVE BEEN CLASSICALLY ASCRIBED TO THIS HOLISTIC ANCIENT METHOD. THE PURPOSE OF THE PRESENT STUDY HAS BEEN TO EXAMINE THE EFFECTS OF LONG-TERM YOGA PRACTICE ON SUBJECTIVE SLEEP QUALITY (SSQ) AND ON SEVERAL HORMONAL PARAMETERS OF THE HYPOTHALAMUS-PITUITARY-ADRENAL (HPA) AXIS. TWENTY-SIX SUBJECTS (16 EXPERIMENTAL AND 10 CONTROLS) WERE RECRUITED TO BE PART OF THE STUDY. EXPERIMENTAL SUBJECTS WERE REGULAR YOGA PRACTITIONERS WITH A MINIMUM OF 3 YEARS OF PRACTICE. BLOOD SAMPLES FOR THE QUANTIFICATION OF ADRENOCORTICOTROPIC HORMONE (ACTH), CORTISOL AND DEHYDROEPIANDROSTERONE SULPHATE (DHEA-S) WERE DRAWN FROM ALL SUBJECTS. LIKEWISE, THE PITTSBURGH SLEEP QUALITY INDEX (PSQI) WAS EMPLOYED TO ASSESS SSQ. AS STATISTICAL ANALYSIS, MANN-WHITNEY U-TEST WAS PERFORMED. THE YOGA GROUP DISPLAYED LOWER PSQI SCORES AND HIGHER BLOOD CORTISOL LEVELS THAN CONTROL SUBJECTS. THEREFORE, IT CAN BE CONCLUDED THAT LONG-TERM YOGA PRACTICE IS ASSOCIATED WITH SIGNIFICANT PSYCHO-BIOLOGICAL DIFFERENCES, INCLUDING BETTER SLEEP QUALITY AS WELL AS A MODULATORY ACTION ON THE LEVELS OF CORTISOL. THESE PRELIMINARY RESULTS SUGGEST INTERESTING CLINICAL IMPLICATIONS WHICH SHOULD BE FURTHER RESEARCHED.	2009