1 743 162 EFFECT OF RESTORATIVE YOGA VS. STRETCHING ON DIURNAL CORTISOL DYNAMICS AND PSYCHOSOCIAL OUTCOMES IN INDIVIDUALS WITH THE METABOLIC SYNDROME: THE PRYSMS RANDOMIZED CONTROLLED TRIAL. PURPOSE: CHRONIC STIMULATION AND DYSREGULATION OF THE NEUROENDOCRINE SYSTEM BY STRESS MAY CAUSE METABOLIC ABNORMALITIES. WE ESTIMATED HOW MUCH CORTISOL AND PSYCHOSOCIAL OUTCOMES IMPROVED WITH A RESTORATIVE YOGA (RELAXATION) VERSUS A LOW IMPACT STRETCHING INTERVENTION FOR INDIVIDUALS WITH THE METABOLIC SYNDROME. METHODS: WE CONDUCTED A 1-YEAR MULTI-CENTER RANDOMIZED CONTROLLED TRIAL (6-MONTH INTERVENTION AND 6-MONTH MAINTENANCE PHASE) OF RESTORATIVE YOGA VS. STRETCHING. PARTICIPANTS COMPLETED SURVEYS TO ASSESS DEPRESSION, SOCIAL SUPPORT, POSITIVE AFFECT, AND STRESS AT BASELINE, 6 MONTHS AND 12 MONTHS. FOR EACH ASSESSMENT, WE COLLECTED SALIVA AT FOUR POINTS DAILY FOR THREE DAYS AND COLLECTED RESPONSE TO DEXAMETHASONE ON THE FOURTH DAY FOR ANALYSIS OF DIURNAL CORTISOL DYNAMICS. WE ANALYZED OUR DATA USING MULTIVARIATE REGRESSION MODELS, CONTROLLING FOR STUDY SITE, MEDICATIONS (ANTIDEPRESSANTS, HORMONE THERAPY), BODY MASS INDEX, AND BASELINE CORTISOL VALUES. RESULTS: PSYCHOSOCIAL OUTCOME MEASURES WERE AVAILABLE FOR 171 STUDY PARTICIPANTS AT BASELINE, 140 AT 6 MONTHS, AND 132 AT 1 YEAR. COMPLETE CORTISOL DATA WERE AVAILABLE FOR 136 OF 171 STUDY PARTICIPANTS (72 IN RESTORATIVE YOGA AND 64 IN STRETCHING) AND WERE ONLY AVAILABLE AT BASELINE AND 6 MONTHS. AT 6 MONTHS, THE STRETCHING GROUP HAD DECREASED CORTISOL AT WAKING AND BEDTIME COMPARED TO THE RESTORATIVE YOGA GROUP. THE PATTERN OF CHANGES IN STRESS MIRRORED THIS IMPROVEMENT, WITH THE STRETCHING GROUP SHOWING REDUCTIONS IN CHRONIC STRESS SEVERITY AND PERSEVERATIVE THOUGHTS ABOUT THEIR STRESS. PERCEIVED STRESS DECREASED BY 1.5 POINTS (-0.4; 3.3, P=0.11) AT 6 MONTHS, AND BY 2.0 POINTS (0.1; 3.9, P=0.04) AT 1 YEAR IN THE STRETCHING COMPARED TO RESTORATIVE YOGA GROUPS. POST HOC ANALYSES SUGGEST THAT IN THE STRETCHING GROUP ONLY, PERCEIVED INCREASES IN SOCIAL SUPPORT (PARTICULARLY FEELINGS OF BELONGING), BUT NOT CHANGES IN STRESS WERE RELATED TO IMPROVED CORTISOL DYNAMICS. CONCLUSIONS: WE FOUND SIGNIFICANT DECREASES IN SALIVARY CORTISOL, CHRONIC STRESS SEVERITY, AND STRESS PERCEPTION IN THE STRETCHING GROUP COMPARED TO THE RESTORATIVE YOGA GROUP. GROUP SUPPORT DURING THE INTERACTIVE STRETCH CLASSES MAY HAVE CONTRIBUTED TO THESE CHANGES. 2014 2 1562 41 LONGITUDINAL AND IMMEDIATE EFFECT OF KUNDALINI YOGA ON SALIVARY LEVELS OF CORTISOL AND ACTIVITY OF ALPHA-AMYLASE AND ITS EFFECT ON PERCEIVED STRESS. CONTEXT: STRESS IS DEFINED AS AN ALTERATION OF AN ORGANISM'S BALANCE IN RESPONSE TO A DEMAND PERCEIVED FROM THE ENVIRONMENT. DIVERSE METHODS EXIST TO EVALUATE PHYSIOLOGICAL RESPONSE. A NONINVASIVE METHOD IS SALIVARY MEASUREMENT OF CORTISOL AND ALPHA-AMYLASE. A GROWING BODY OF EVIDENCE SUGGESTS THAT THE REGULAR PRACTICE OF YOGA WOULD BE AN EFFECTIVE TREATMENT FOR STRESS. AIMS: TO DETERMINE THE KUNDALINI YOGA (KY) EFFECT, IMMEDIATE AND AFTER 3 MONTHS OF REGULAR PRACTICE, ON THE PERCEPTION OF PSYCHOLOGICAL STRESS AND THE SALIVARY LEVELS OF CORTISOL AND ALPHA-AMYLASE ACTIVITY. SETTINGS AND DESIGN: TO DETERMINE THE PSYCHOLOGICAL PERCEIVED STRESS, LEVELS OF CORTISOL AND ALPHA-AMYLASE ACTIVITY IN SALIVA, AND COMPARE BETWEEN THE PARTICIPANTS TO KY CLASSES PERFORMED FOR 3 MONTHS AND A GROUP THAT DOES NOT PRACTICE ANY TYPE OF YOGA. SUBJECTS AND METHODS: THE TOTAL SAMPLE CONSISTED OF 26 PEOPLE BETWEEN 18 AND 45-YEAR-OLD; 13 TAKING PART IN KY CLASSES GIVEN AT THE FACULTY OF DENTISTRY, UNIVERSITY OF CHILE AND 13 CONTROLS. SALIVARY SAMPLES WERE COLLECTED, ENZYME-LINKED IMMUNOSORBENT ASSAY WAS PERFORMED TO QUANTIFY CORTISOL AND KINETIC REACTION TEST WAS MADE TO DETERMINE ALPHA-AMYLASE ACTIVITY. PERCEIVED STRESS SCALE WAS APPLIED AT THE BEGINNING AND AT THE END OF THE INTERVENTION. STATISTICAL ANALYSIS USED: STATISTICAL ANALYSIS WAS APPLIED USING STATA V11.1 SOFTWARE. SHAPIRO-WILK TEST WAS USED TO DETERMINE DATA DISTRIBUTION. THE PAIRED ANALYSIS WAS FULFILLED BY T-TEST OR WILCOXON SIGNED-RANK TEST. T-TEST OR MANN-WHITNEY'S TEST WAS APPLIED TO COMPARE LONGITUDINAL DATA. A STATISTICAL SIGNIFICANCE WAS CONSIDERED WHEN P < 0.05. RESULTS: KY PRACTICE HAD AN IMMEDIATE EFFECT ON SALIVARY CORTISOL. THE ACTIVITY OF ALPHA-AMYLASE DID NOT SHOW SIGNIFICANT CHANGES. A SIGNIFICANT DECREASE OF PERCEIVED STRESS IN THE STUDY GROUP WAS FOUND. CONCLUSIONS: KY PRACTICE SHOWS AN IMMEDIATE EFFECT ON SALIVARY CORTISOL LEVELS AND ON PERCEIVED STRESS AFTER 3 MONTHS OF PRACTICE. 2017 3 851 48 EFFECT OF YOGA ON SLEEP QUALITY AND NEUROENDOCRINE IMMUNE RESPONSE IN METASTATIC BREAST CANCER PATIENTS. BACKGROUND: STUDIES HAVE SHOWN THAT DISTRESS AND ACCOMPANYING NEUROENDOCRINE STRESS RESPONSES AS IMPORTANT PREDICTOR OF SURVIVAL IN ADVANCED BREAST CANCER PATIENTS. SOME PSYCHOTHERAPEUTIC INTERVENTION STUDIES HAVE SHOWN HAVE MODULATION OF NEUROENDOCRINE-IMMUNE RESPONSES IN ADVANCED BREAST CANCER PATIENTS. IN THIS STUDY, WE EVALUATE THE EFFECTS OF YOGA ON PERCEIVED STRESS, SLEEP, DIURNAL CORTISOL, AND NATURAL KILLER (NK) CELL COUNTS IN PATIENTS WITH METASTATIC CANCER. METHODS: IN THIS STUDY, 91 PATIENTS WITH METASTATIC BREAST CANCER WHO SATISFIED SELECTION CRITERIA AND CONSENTED TO PARTICIPATE WERE RECRUITED AND RANDOMIZED TO RECEIVE "INTEGRATED YOGA BASED STRESS REDUCTION PROGRAM" (N = 45) OR STANDARD "EDUCATION AND SUPPORTIVE THERAPY SESSIONS" (N = 46) OVER A 3 MONTH PERIOD. PSYCHOMETRIC ASSESSMENTS FOR SLEEP QUALITY WERE DONE BEFORE AND AFTER INTERVENTION. BLOOD DRAWS FOR NK CELL COUNTS WERE COLLECTED BEFORE AND AFTER THE INTERVENTION. SALIVA SAMPLES WERE COLLECTED FOR THREE CONSECUTIVE DAYS BEFORE AND AFTER INTERVENTION. DATA WERE ANALYZED USING THE ANALYSIS OF COVARIANCE ON POSTMEASURES USING RESPECTIVE BASELINE MEASURE AS A COVARIATE. RESULTS: THERE WAS A SIGNIFICANT DECREASE IN SCALES OF SYMPTOM DISTRESS (P < 0.001), SLEEP PARAMETERS (P = 0.02), AND IMPROVEMENT IN QUALITY OF SLEEP (P = 0.001) AND INSOMNIA RATING SCALE SLEEP SCORE (P = 0.001) FOLLOWING INTERVENTION. THERE WAS A DECREASE IN MORNING WAKING CORTISOL IN YOGA GROUP (P = 0.003) ALONE FOLLOWING INTERVENTION. THERE WAS A SIGNIFICANT IMPROVEMENT IN NK CELL PERCENT (P = 0.03) FOLLOWING INTERVENTION IN YOGA GROUP COMPARED TO CONTROL GROUP. CONCLUSION: THE RESULTS SUGGEST MODULATION OF NEUROENDOCRINE RESPONSES AND IMPROVEMENT IN SLEEP IN PATIENTS WITH ADVANCED BREAST CANCER FOLLOWING YOGA INTERVENTION. 2017 4 385 36 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 5 2778 22 YOGA STRETCHING FOR IMPROVING SALIVARY IMMUNE FUNCTION AND MENTAL STRESS IN MIDDLE-AGED AND OLDER ADULTS. PROTECTION AGAINST AGE-RELATED IMMUNE SUPPRESSION IS IMPORTANT IN ELDERLY INDIVIDUALS. THIS STUDY DETERMINED THE EFFECT OF YOGA ON MUCOSAL IMMUNE FUNCTION AND MENTAL STRESS. SALIVA SAMPLES WERE COLLECTED FROM 23 ADULT WOMEN (AGE: 60.4 +/- 10.4 YEARS) BEFORE AND AFTER 90 MINUTES OF YOGA STRETCHING OR REST TO MEASURE SECRETORY IMMUNOGLOBULIN A (SIGA), CORTISOL, AND TESTOSTERONE. THE SIGA CONCENTRATION AND SECRETION RATE WERE SIGNIFICANTLY HIGHER AFTER YOGA THAN BEFORE (P < .05). THE CORTISOL CONCENTRATION AND SECRETION RATE WERE LOWER AND TESTOSTERONE SECRETION RATE HIGHER AFTER YOGA (P < .05). YOGA STRETCHING CAN REDUCE STRESS AND ENHANCE MUCOSAL IMMUNE FUNCTION IN ELDERLY WOMEN. 2018 6 984 48 EFFECTS OF HATHA YOGA AND AFRICAN DANCE ON PERCEIVED STRESS, AFFECT, AND SALIVARY CORTISOL. BACKGROUND: DANCE AND YOGA HAVE BEEN SHOWN TO PRODUCE IMPROVEMENTS IN PSYCHOLOGICAL WELL-BEING. PURPOSE: THE AIM OF THIS STUDY WAS TO EXAMINE SOME OF THE PSYCHOLOGICAL AND NEUROENDOCRINE RESPONSE TO THESE ACTIVITIES. METHODS: SIXTY-NINE HEALTHY COLLEGE STUDENTS PARTICIPATED IN ONE OF THREE 90-MIN CLASSES: AFRICAN DANCE (N = 21), HATHA YOGA (N= 18), OR A BIOLOGY LECTURE AS A CONTROL SESSION (N = 30). BEFORE AND AFTER EACH CONDITION PARTICIPANTS COMPLETED THE PERCEIVED STRESS SCALE (PSS), COMPLETED THE POSITIVE AFFECT AND NEGATIVE AFFECT SCHEDULE, AND PROVIDED A SALIVA SAMPLE FOR CORTISOL. RESULTS: THERE WERE SIGNIFICANT REDUCTIONS IN PSS AND NEGATIVE AFFECT (PS < .0001) AND TIME X TREATMENT INTERACTIONS (PS < .0001) SUCH THAT AFRICAN DANCE AND HATHA YOGA SHOWED SIGNIFICANT DECLINES, WHEREAS THERE WAS NO SIGNIFICANT CHANGE IN BIOLOGY LECTURE. THERE WAS NO SIGNIFICANT MAIN EFFECT FOR POSITIVE AFFECT (P = .53), HOWEVER THERE WAS A SIGNIFICANT INTERACTION EFFECT (P < .001) SUCH THAT POSITIVE AFFECT INCREASED IN AFRICAN DANCE, DECREASED IN BIOLOGY LECTURE, AND DID NOT CHANGE SIGNIFICANTLY IN HATHA YOGA. THERE WAS A SIGNIFICANT MAIN EFFECT FOR SALIVARY CORTISOL (P < .05) AND A SIGNIFICANT INTERACTION EFFECT (P < .0001) SUCH THAT CORTISOL INCREASED IN AFRICAN DANCE, DECREASED IN HATHA YOGA, AND DID NOT CHANGE IN BIOLOGY. CHANGES IN CORTISOL WERE NOT SIGNIFICANTLY RELATED TO CHANGES IN PSYCHOLOGICAL VARIABLES ACROSS TREATMENTS. THERE WAS 1 SIGNIFICANT INTERACTION EFFECT (P = .04) SUCH THAT CHANGE IN POSITIVE AFFECT AND CHANGE IN CORTISOL WERE NEGATIVELY CORRELATED IN HATHA YOGA BUT POSITIVELY CORRELATED IN AFRICA DANCE AND BIOLOGY. CONCLUSIONS: BOTH AFRICAN DANCE AND HATHA YOGA REDUCED PERCEIVED STRESS AND NEGATIVE AFFECT. CORTISOL INCREASED IN AFRICAN DANCE AND DECREASED IN HATHA YOGA. THEREFORE, EVEN WHEN THESE INTERVENTIONS PRODUCE SIMILAR POSITIVE PSYCHOLOGICAL EFFECTS, THE EFFECTS MAY BE VERY DIFFERENT ON PHYSIOLOGICAL STRESS PROCESSES. ONE FACTOR THAT MAY HAVE PARTICULAR SALIENCE IS THAT AMOUNT OF PHYSIOLOGICAL AROUSAL PRODUCED BY THE INTERVENTION. 2004 7 962 36 EFFECTS OF A YOGA PROGRAM ON CORTISOL RHYTHM AND MOOD STATES IN EARLY BREAST CANCER PATIENTS UNDERGOING ADJUVANT RADIOTHERAPY: A RANDOMIZED CONTROLLED TRIAL. UNLABELLED: OBJECTIVES. THIS STUDY COMPARES THE EFFECTS OF AN INTEGRATED YOGA PROGRAM WITH BRIEF SUPPORTIVE THERAPY IN BREAST CANCER OUTPATIENTS UNDERGOING ADJUVANT RADIOTHERAPY AT A CANCER CENTER. METHODS: EIGHTY-EIGHT STAGE II AND III BREAST CANCER OUTPATIENTS ARE RANDOMLY ASSIGNED TO RECEIVE YOGA (N = 44) OR BRIEF SUPPORTIVE THERAPY (N = 44) PRIOR TO RADIOTHERAPY TREATMENT. ASSESSMENTS INCLUDE DIURNAL SALIVARY CORTISOL LEVELS 3 DAYS BEFORE AND AFTER RADIOTHERAPY AND SELF-RATINGS OF ANXIETY, DEPRESSION, AND STRESS COLLECTED BEFORE AND AFTER 6 WEEKS OF RADIOTHERAPY. RESULTS: ANALYSIS OF COVARIANCE REVEALS SIGNIFICANT DECREASES IN ANXIETY (P < .001), DEPRESSION (P = .002), PERCEIVED STRESS (P < .001), 6 A.M. SALIVARY CORTISOL (P = .009), AND POOLED MEAN CORTISOL (P = .03) IN THE YOGA GROUP COMPARED WITH CONTROLS. THERE IS A SIGNIFICANT POSITIVE CORRELATION BETWEEN MORNING SALIVARY CORTISOL LEVEL AND ANXIETY AND DEPRESSION. CONCLUSION: YOGA MIGHT HAVE A ROLE IN MANAGING SELF-REPORTED PSYCHOLOGICAL DISTRESS AND MODULATING CIRCADIAN PATTERNS OF STRESS HORMONES IN EARLY BREAST CANCER PATIENTS UNDERGOING ADJUVANT RADIOTHERAPY. 2009 8 1361 41 IMMEDIATE STRESS REDUCTION EFFECTS OF YOGA DURING PREGNANCY: ONE GROUP PRE-POST TEST. BACKGROUND: EXCESSIVE STRESS DURING PREGNANCY MAY CAUSE MENTAL DISORDERS IN PREGNANT WOMEN AND INHIBIT FETAL GROWTH. YOGA MAY ALLEVIATE STRESS DURING PREGNANCY. AIM: TO VERIFY THE IMMEDIATE EFFECTS OF YOGA ON STRESS RESPONSE DURING PREGNANCY. METHODS: ONE GROUP PRE-POST TEST WAS CONDUCTED AT A HOSPITAL IN JAPAN. WE RECRUITED 60 HEALTHY PRIMIPARAS WITHOUT COMPLICATIONS AND ASKED THEM TO ATTEND YOGA CLASSES TWICE A MONTH AND TO PRACTICE YOGA AT THEIR HOMES USING DVD 3 TIMES A WEEK FROM 20 GESTATIONAL WEEKS UNTIL CHILDBIRTH. SALIVARY CORTISOL AND ALPHA-AMYLASE CONCENTRATION WERE MEASURED BEFORE AND AFTER YOGA CLASSES AT TIME 1 (27-32 GESTATIONAL WEEKS) AND TIME 2 (34-37 GESTATIONAL WEEKS). SUBJECTIVE MOOD WAS ASSESSED USING THE PROFILE OF MOOD STATES. SALIVA VALUES AND MOOD SCORES BEFORE AND AFTER EACH YOGA CLASS WERE COMPARED USING PAIRED T-TEST AND WILCOXON RANK-SUM TEST, RESPECTIVELY. FINDINGS: WE ANALYZED 44 AND 35 WOMEN AT TIME 1 AND TIME 2, RESPECTIVELY. THE MEAN SALIVARY CORTISOL CONCENTRATION DECLINED SIGNIFICANTLY AFTER EACH YOGA CLASS [TIME 1: 0.36-0.26MUG/DL (P<0.001), TIME 2: 0.32-0.26MUG/DL (P=0.001)]. THE MEAN SALIVARY ALPHA-AMYLASE CONCENTRATION ALSO DECREASED SIGNIFICANTLY FOLLOWING EACH CLASS [TIME 1: 72.2-50.8KU/L (P=0.001), TIME 2: 70.6-52.7KU/L (P=0.006)]. THE SCORES FOR NEGATIVE DIMENSIONS OF MOOD (TRAIT-ANXIETY, DEPRESSION, ANGER-HOSTILITY, FATIGUE, AND CONFUSION) DECREASED SIGNIFICANTLY. THE SCORES OF VIGOR FOR A POSITIVE DIMENSION OF MOOD SIGNIFICANTLY INCREASED. CONCLUSION: THIS STUDY INDICATED THE IMMEDIATE STRESS REDUCTION EFFECTS OF YOGA DURING PREGNANCY. 2016 9 2743 44 YOGA PRACTICE IMPROVES EXECUTIVE FUNCTION BY ATTENUATING STRESS LEVELS. BACKGROUND: PROLONGED ACTIVATION OF THE HYPOTHALAMUS-PITUITARY-ADRENAL SYSTEM IS THOUGHT TO HAVE DELETERIOUS EFFECTS ON BRAIN FUNCTION. NEUROENDOCRINE STUDIES SUGGEST THAT BRAIN EXPOSURE TO HIGHER CORTISOL CONCENTRATIONS CONTRIBUTE TO COGNITIVE DEFICITS AS WE AGE. MIND-BODY TECHNIQUES SUCH AS YOGA HAVE SHOWN TO IMPROVE STRESS LEVELS BY RESTORING THE BODY'S SYMPATHETIC-PARASYMPATHETIC BALANCE. THE OBJECTIVE OF THIS STUDY WAS TO DETERMINE WHETHER YOGA PRACTICE MODERATED THE STRESS RESPONSE RESULTING IN IMPROVED EXECUTIVE FUNCTION. METHODS: SEDENTARY COMMUNITY DWELLING OLDER ADULTS (N=118, MEAN AGE=62.02) WERE RANDOMIZED TO AN 8-WEEK YOGA INTERVENTION OR A STRETCHING CONTROL GROUP. AT BASELINE AND FOLLOWING 8 WEEKS, ALL PARTICIPANTS COMPLETED MEASURES OF EXECUTIVE FUNCTION, SELF-REPORTED STRESS AND ANXIETY AND PROVIDED SALIVA SAMPLES BEFORE AND AFTER COGNITIVE TESTING TO ASSESS CORTISOL. RESULTS: YOGA PARTICIPANTS SHOWED IMPROVED ACCURACY ON EXECUTIVE FUNCTION MEASURES AND AN ATTENUATED CORTISOL RESPONSE COMPARED TO THEIR STRETCHING COUNTERPARTS WHO SHOWED INCREASED CORTISOL LEVELS AND POOR COGNITIVE PERFORMANCE AT FOLLOW UP. THE CHANGE IN CORTISOL LEVELS AS WELL AS SELF-REPORTED STRESS AND ANXIETY LEVELS PREDICTED PERFORMANCE ON THE RUNNING SPAN TASK, N-BACK WORKING MEMORY AND TASK SWITCHING PARADIGM (BETA'S=0.27-0.38, P'S .05) BUT VITALITY WAS HIGHER (P = .01) IN THE YOGA GROUP COMPARED WITH THE CONTROL GROUP. AT 3 MONTHS POST-TREATMENT, FATIGUE WAS LOWER IN THE YOGA GROUP (P = .002), VITALITY WAS HIGHER (P = .01), AND IL-6 (P = .027), TNF-ALPHA (P = .027), AND IL-1BETA (P = .037) WERE LOWER FOR YOGA PARTICIPANTS COMPARED WITH THE CONTROL GROUP. GROUPS DID NOT DIFFER ON DEPRESSION AT EITHER TIME (P > .2). PLANNED SECONDARY ANALYSES SHOWED THAT THE FREQUENCY OF YOGA PRACTICE HAD STRONGER ASSOCIATIONS WITH FATIGUE AT BOTH POST-TREATMENT VISITS (P = .019; P < .001), AS WELL AS VITALITY (P = .016; P = .0045), BUT NOT DEPRESSION (P > .05) THAN SIMPLE GROUP ASSIGNMENT; MORE FREQUENT PRACTICE PRODUCED LARGER CHANGES. AT 3 MONTHS POST-TREATMENT, INCREASING YOGA PRACTICE ALSO LED TO A DECREASE IN IL-6 (P = .01) AND IL-1BETA (P = .03) PRODUCTION BUT NOT IN TNF-ALPHA PRODUCTION (P > .05). CONCLUSION: CHRONIC INFLAMMATION MAY FUEL DECLINES IN PHYSICAL FUNCTION LEADING TO FRAILTY AND DISABILITY. IF YOGA DAMPENS OR LIMITS BOTH FATIGUE AND INFLAMMATION, THEN REGULAR PRACTICE COULD HAVE SUBSTANTIAL HEALTH BENEFITS. 2014