1  425 140 CALCIUM LOSS IN SWEAT DOES NOT STIMULATE PTH RELEASE: A STUDY OF BIKRAM HOT YOGA. IT HAS BEEN HYPOTHESIZED THAT SWEAT LOSS DURING EXERCISE CAUSES A DISRUPTION IN CALCIUM HOMEOSTASIS THAT ACTIVATES BONE RESORPTION AND OVER TIME LEADS TO LOW BONE MINERAL DENSITY. THE PURPOSE OF THIS SMALL PILOT STUDY WAS TO DETERMINE WHETHER DERMAL CALCIUM LOSS FROM A BOUT OF EXCESSIVE SWEATING DURING LIGHT INTENSITY PHYSICAL ACTIVITY TRIGGERS AN INCREASE IN BIOMARKERS OF BONE RESORPTION. BIOCHEMICAL MARKERS RELATED TO BONE HOMEOSTASIS WERE MEASURED BEFORE AND AFTER A 90 MIN BIKRAM HOT YOGA PRACTICE PERFORMED IN A ROOM HEATED TO 105 DEGREES F WITH 40 % HUMIDITY. PARTICIPANTS WERE FIVE FEMALES WITH A MEAN AGE OF 47.4 +/- 4.7 YEARS. NUDE BODY WEIGHT, SERUM TOTAL CALCIUM (CA(2+)), FREE IONIZED CALCIUM, ALBUMIN, PARATHYROID HORMONE (PTH) AND CTX-I WERE MEASURED BEFORE AND AFTER A BIKRAM HOT YOGA PRACTICE. MEAN ESTIMATED SWEAT LOSS WAS 1.54 +/- 0.65 L, WHICH ELICITED A 1.9 +/- 0.9 % DECREASE IN PARTICIPANT'S BODY WEIGHT. MEAN CA(2+) CONCENTRATION IN SWEAT WAS 2.9 +/- 1.7 MG/DL AND THE ESTIMATED MEAN TOTAL CALCIUM LOST WAS 41.3 +/- 16.4 MG. SERUM IONIZED CA(2+) INCREASED FROM 4.76 +/- 0.29 MG/DL TO 5.35 +/- 0.36 MG/DL AFTER THE BIKRAM HOT YOGA PRACTICE (P = 0.0118). SERUM PTH DECREASED FROM PRE- 33.9 +/- 3.3 PG/ML TO POST- 29.9 +/- 2.1 PG/ML YOGA PRACTICE (P = 0.0015) WHEN ADJUSTED FOR HEMOCONCENTRATION (PTHADJ), IMPLYING A DECREASE IN PTH SECRETION. WE CONCLUDE THAT CALCIUM LOSS IN SWEAT DURING 90 MIN OF BIKRAM HOT YOGA DID NOT TRIGGER AN INCREASE IN PTH SECRETION AND DID NOT INITIATE BONE RESORPTION.	2020	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
2 1944  59 SALT AND WATER BALANCE AFTER SWEAT LOSS: A STUDY OF BIKRAM YOGA. BIKRAM YOGA IS PRACTICED IN A ROOM HEATED TO 105 DEGREES F WITH 40% HUMIDITY FOR 90 MIN. DURING THE CLASS A LARGE VOLUME OF WATER AND ELECTROLYTES ARE LOST IN THE SWEAT, SPECIFICALLY, SODIUM IS LOST, THE MAIN CATION OF THE EXTRACELLULAR FLUID. THERE IS LITTLE KNOWN ABOUT THE VOLUME OF SWEAT AND THE AMOUNT OF SODIUM LOST IN SWEAT DURING BIKRAM YOGA OR THE OPTIMUM QUANTITY OF FLUID REQUIRED TO REPLACE THESE LOSSES. THE PARTICIPANTS WHO TOOK PART IN THIS SMALL FEASIBILITY STUDY WERE FIVE FEMALES WITH A MEAN AGE OF 47.4 +/- 4.7 YEARS AND 2.6 +/- 1.6 YEARS OF EXPERIENCE AT BIKRAM YOGA. THE TOTAL BODY WEIGHT, WATER CONSUMED, SERUM SODIUM CONCENTRATION, SERUM OSMOLALITY, AND SERUM ALDOSTERONE LEVELS WERE ALL MEASURED BEFORE AND AFTER A BIKRAM YOGA PRACTICE. SWEAT SODIUM CHLORIDE CONCENTRATION AND OSMOLALITY WERE MEASURED AT THE END OF THE PRACTICE. THE MEAN ESTIMATED SWEAT LOSS WAS 1.54 +/- 0.65 L, WHILE THE AMOUNT OF WATER CONSUMED DURING BIKRAM YOGA WAS 0.38 +/- 0.22 L. EVEN THOUGH ONLY 25% OF THE SWEAT LOSS WAS REPLENISHED WITH WATER INTAKE DURING THE BIKRAM YOGA CLASS, WE DID NOT OBSERVE A CHANGE IN SERUM SODIUM LEVELS OR SERUM OSMOLALITY. THE SWEAT CONTAINED 82 +/- 16 MMOL/L OF SODIUM CHLORIDE FOR AN ESTIMATED TOTAL OF 6.8 +/- 2.1 G OF SODIUM CHLORIDE LOST IN THE SWEAT. THE SERUM ALDOSTERONE INCREASED 3.5-FOLD FROM BEFORE TO AFTER BIKRAM YOGA. THERE WAS A DECREASE IN THE EXTRACELLULAR BODY FLUID COMPARTMENT OF 9.7%. SWEAT LOSS IN BIKRAM YOGA PREDOMINATELY PRODUCED A VOLUME DEPLETION RATHER THAN THE DEHYDRATION OF BODY FLUIDS. THE SWEATING-STIMULATED RISE IN SERUM ALDOSTERONE LEVELS WILL LEAD TO INCREASED SODIUM REABSORPTION FROM THE KIDNEY TUBULES AND RESTORE THE EXTRACELLULAR FLUID VOLUME OVER THE NEXT 24 HR.	2020	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
3  268  38 ACUTE PHYSIOLOGIC EFFECTS OF PERFORMING YOGA IN THE HEAT ON ENERGY EXPENDITURE, RANGE OF MOTION, AND INFLAMMATORY BIOMARKERS. PERFORMING YOGA IN A HEATED ENVIRONMENT (HY) IS A POPULAR EXERCISE MODE PURPORTED TO IMPROVE RANGE OF MOTION (ROM), BODY COMPOSITION, AND AEROBIC FITNESS. THE PURPOSE OF THIS INVESTIGATION WAS TO COMPARE A SESSION OF HY TO ROOM TEMPERATURE YOGA (RTY) WITH REGARDS TO ROM, OXYGEN CONSUMPTION, CALORIC EXPENDITURE, AND BIOMARKERS OF ACUTE STRESS AND INFLAMMATION. SIXTEEN EXPERIENCED YOGA PRACTITIONERS (F14, M2; 40 +/- 11YR; 22.6 +/- 1.8 KG/M(2)) COMPLETED A 1-HOUR STANDARDIZED BIKRAM SEQUENCE IN HY (105 DEGREES F, 40 DEGREES C) AND RTY (74 DEGREES F, 23.3 DEGREES C) CONDITIONS (ORDER OF CONDITIONS RANDOMIZED, HUMIDITY STANDARDIZED AT 40%). INTRA-EXERCISE METABOLIC GAS EXCHANGE AND HEART RATE (HR) WAS MONITORED USING A METABOLIC CART. ROM MEASURES WERE TAKEN PRE AND POST-EXERCISE AT THE ELBOW, SHOULDER, HIP, AND KNEE. CYTOKINES INTERLEUKIN 6,10 (IL-6, IL-10) AND TUMOR-NECROSIS-FACTOR ALPHA (TNF-ALPHA) WERE ANALYZED FROM BLOOD SAMPLES COLLECTED PRE- AND 30-MINUTES POST-EXERCISE. INTRA-EXERCISE METABOLIC GAS EXCHANGE AND HEART RATE (HR) WAS MONITORED USING A METABOLIC CART. BOTH BOUTS ELICITED SIMILAR ACUTE CHANGES IN ROM ALTHOUGH HY ELICITED A GREATER INCREASE IN HIP ABDUCTION (RTYDELTA DEGREES = 2.3 +/- 1.3|HYDELTA DEGREES = 6.6 +/- 1.5; P < 0.05). MEAN VO2, PEAK VO2, %VO2MAX, HR, AND KCAL EXPENDITURE DID NOT DIFFER BETWEEN CONDITIONS. RER WAS LOWER DURING THE HY (RTY = 0.95 +/- 0.02| HY = 0.89 +/- 0.02; P < 0.05) WITH A CONCOMITANT ELEVATION IN FAT OXIDATION (RTY = 0.05 +/- 0.01|HY = 0.09 +/- 0.01, G.MIN(-1); P < 0.05) AND DECREASE IN CARBOHYDRATE OXIDATION (RTY = 0.51 +/- 0.04|HY = 0.44 +/- 0.03, G.MIN(-1); P < 0.05). SERUM IL-6 WAS INCREASED (15.5 +/- 8.0-FOLD) FOLLOWING HY ONLY (P < 0.05). HY DOES NOT SIGNIFICANTLY ELEVATE AEROBIC ENERGY COST COMPARED TO RTY BUT MAY ACUTELY INCREASE FAT SUBSTRATE UTILIZATION AND HIP ROM. FUTURE STUDIES REMAIN NEEDED TO ESTABLISH DOSE-RESPONSE RELATIONSHIPS FOR INCLUDING HY OR RTY INTO WELL-ROUNDED FITNESS PROGRAMS.	2020	
                                                                                                                                                                                                                                                                                                                                                                                               
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	2008	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
5 2258  30 THE PHYSIOLOGICAL RESPONSES TO BIKRAM YOGA IN NOVICE AND EXPERIENCED PRACTITIONERS. CONTEXT: BIKRAM YOGA HAS GAINED A LARGE FOLLOWING, POSSIBLY BECAUSE OF WIDESPREAD CLAIMS BOASTING ENERGY EXPENDITURE OF UP TO 1000 CALORIES PER SESSION. HOWEVER, THESE CLAIMS ARE UNFOUNDED BECAUSE NO SCIENTIFIC STUDY HAS INVESTIGATED THE METABOLIC RESPONSE TO A COMPLETE, STANDARDIZED BIKRAM YOGA CLASS. OBJECTIVES: THIS STUDY INTENDS TO DETERMINE ENERGY EXPENDITURE, HEART RATE, AND SWEAT RATE IN NOVICE AND EXPERIENCED PRACTITIONERS FROM A STANDARDIZED BIKRAM YOGA CLASS. SETTING: DATA WERE COLLECTED IN THE ENVIRONMENTAL CHAMBER OF THE EXERCISE PHYSIOLOGY LABORATORY AT SAN DIEGO STATE UNIVERSITY IN CALIFORNIA, USA. PARTICIPANTS: MALE (N = 5) AND FEMALE (N = 19) PARTICIPANTS BETWEEN THE AGES OF 18 AND 57 Y WERE RECRUITED THROUGH FLYERS IN YOGA STUDIOS THROUGHOUT SAN DIEGO. PARTICIPANTS WERE CLASSIFIED AS EXPERIENCED OR NOVICE PRACTITIONERS, HAVING COMPLETED >/=20 OR <20 SESSIONS, RESPECTIVELY. INTERVENTIONS: PARTICIPANTS WERE GUIDED THROUGH A STANDARDIZED 90-MIN YOGA CLASS PERFORMED IN A HOT ENVIRONMENT USING BIKRAM'S STANDARD BEGINNING DIALOGUE, WHILE EXPIRED GAS WAS COLLECTED AND HEART RATE WAS RECORDED. OUTCOME MEASURES: ENERGY EXPENDITURE, CALCULATED VIA OXYGEN UPTAKE, AND HEART RATE WERE DETERMINED FOR EACH POSTURE AND TRANSITION PERIOD. IN ADDITION, SWEAT RATE AND CORE TEMPERATURE WERE RECORDED FOR EACH PARTICIPANT. RESULTS: MEAN (+/-SD) RELATIVE VO2 FOR THE ENTIRE 90-MIN SESSION WAS 9.5 +/- 1.9 ML X KG-1 X MIN-1, RANGING FROM 6.0 TO 12.9 ML X KG-1 X MIN-1. MEAN ABSOLUTE ENERGY EXPENDITURE WAS 286 +/- 72 KCALS, RANGING FROM 179 TO 478 KCALS. INDEPENDENT SAMPLE T TESTS REVEALED SIGNIFICANT DIFFERENCES (P < .05) IN RELATIVE ENERGY EXPENDITURE, HEART RATE, ENDING CORE TEMPERATURE, AND SWEAT RATE BETWEEN EXPERIENCE LEVELS. MEAN RELATIVE ENERGY EXPENDITURE WAS 3.7 +/- 0.5 KCAL/KG IN NOVICE PRACTITIONERS AND 4.7 +/- 0.8 KCAL/KG IN EXPERIENCED PRACTITIONERS. PERCENTAGE OF PREDICTED MAXIMUM HEART RATE AND SWEAT RATE WERE 72.3% +/- 10.6% AND 0.6 +/- 0.2 KG/H IN NOVICE PRACTITIONERS AND 86.4% +/- 5.2% AND 1.1 +/- 0.5 KG/H IN EXPERIENCED PARTICIPANTS. ALL POSTURES WERE CLASSIFIED AS LIGHT-TO-MODERATE INTENSITY ACCORDING TO THE AMERICAN COLLEGE OF SPORTS MEDICINE (ACSM) STANDARDS. CONCLUSIONS: BIKRAM YOGA MEETS REQUIREMENTS FOR EXERCISE OF LIGHT-TO-MODERATE INTENSITY AND, THEORETICALLY, COULD BE USED FOR WEIGHT MAINTENANCE OR WEIGHT LOSS IF PRACTICED SEVERAL TIMES PER WEEK.	2014	

6  741  24 EFFECT OF REGULAR YOGA PRACTICE ON RESPIRATORY REGULATION AND EXERCISE PERFORMANCE. YOGA ALTERS SPONTANEOUS RESPIRATORY REGULATION AND REDUCES HYPOXIC AND HYPERCAPNIC VENTILATORY RESPONSES. SINCE A LOWER VENTILATORY RESPONSE IS ASSOCIATED WITH AN IMPROVED ENDURANCE CAPACITY DURING WHOLE-BODY EXERCISE, WE TESTED WHETHER YOGIC SUBJECTS (YOGA) SHOW AN INCREASED ENDURANCE CAPACITY COMPARED TO MATCHED NON-YOGIC INDIVIDUALS (CON) WITH SIMILAR PHYSICAL ACTIVITY LEVELS. RESTING VENTILATION, THE VENTILATORY RESPONSE TO HYPERCAPNIA, PASSIVE LEG MOVEMENT AND EXERCISE, AS WELL AS ENDURANCE PERFORMANCE WERE ASSESSED. YOGA (N = 9), COMPARED TO CONTROL (N = 6), HAD A HIGHER TIDAL VOLUME AT REST (0.7+/-0.2 VS. 0.5+/-0.1 L, P = 0.034) AND A REDUCED VENTILATORY RESPONSE TO HYPERCAPNIA (33+/-15 VS. 47+/-15 L.MIN(-1), P = 0.048). A YOGA SUBGROUP (N = 6) WITH MAXIMAL PERFORMANCE SIMILAR TO CONTROL SHOWED A BLUNTED VENTILATORY RESPONSE TO PASSIVE CYCLING (11+/-2 VS. 14+/-2 L.MIN(-1), P = 0.039) AND A TENDENCY TOWARDS LOWER EXERCISE VENTILATION (33+/-2 VS. 36+/-3 L.MIN(-1), P = 0.094) WHILE CYCLING ENDURANCE (YOGA: 17.3+/-3.3; CON: 19.6+/-8.5 MIN, P = 0.276) DID NOT DIFFER. THUS, YOGA PRACTICE WAS NOT ASSOCIATED WITH IMPROVED EXERCISE CAPACITY NOR WITH SIGNIFICANT CHANGES IN EXERCISE VENTILATION DESPITE A SIGNIFICANTLY DIFFERENT RESPIRATORY REGULATION AT REST AND IN RESPONSE TO HYPERCAPNIA AND PASSIVE LEG MOVEMENT.	2016	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
7  323  19 ANTHROPOMETRIC AND PHYSIOLOGIC PROFILES OF FEMALE PROFESSIONAL YOGA PRACTITIONERS AND ENERGY EXPENDITURE DURING ASANAS EXECUTION. AIM: THE PRESENT STUDY AIMED TO: 1) DEFINE THE ANTHROPOMETRIC AND PHYSIOLOGICAL PROFILES OF FEMALE PROFESSIONAL YOGA PRACTITIONER COMPARED TO THAT OF OTHER ATHLETES; 2) EVALUATE THE ENERGY EXPENDITURE (EE) DURING A YOGA SESSION. METHODS: THE PERCENTAGE FAT MASS (FM%) AND FAT FREE MASS (FFM%), THE MAXIMAL AEROBIC POWER (VO2MAX), THE MAXIMAL VOLUNTARY CONTRACTION (MVC) OF KNEE EXTENSOR MUSCLES AND THE MAXIMAL ANAEROBIC ALACTACID POWER (WMAX) WERE ASSESSED IN A GROUP OF YOGA PRACTITIONERS (YO), LONG DISTANCE RUNNERS (LDR), SPRINTERS (SPR), KARATE PRACTITIONERS (KA) AND SEDENTARY CONTROL SUBJECTS (CON). EE WAS EVALUATED IN YO DURING A YOGA SESSION (EXECUTION OF A SEQUENCE OF SIX YOGA POSTURES, CALLED ASANAS). RESULTS: FM% WAS SIGNIFICANTLY HIGHER IN CON (24.2+/-2.6%) THAN IN OTHER GROUPS (18+/-1.9%, POOLED DATA, P<0.05). FFM% DID NOT DIFFER AMONG GROUPS. VO2MAX WAS HIGHER IN LDR (55.6+/-1.8 ML MIN-1 KG-1) COMPARED TO OTHER GROUPS (41.7+/-3 ML MIN-1 KG-1, POOLED DATA, P<0.05). MVC AND WMAX WERE HIGHER IN YO, SPR AND KA THAN IN LDR AND CON (P<0.05). IN YO, EE INCREASED IN COMPARISON TO BASELINE, DURING SIRASANA EXECUTION ONLY (+59%, P<0.05). CONCLUSION: THESE DATA SUGGEST THAT CHRONIC YOGA PRACTICE IS ASSOCIATED WITH 1) VALUES OF FM%, FFM%, MVC AND WMAX SIMILAR TO THOSE INDUCED BY SPORTS REQUIRING HIGH DEGREE OF FORCE AND POWER OF LOWER LIMB MUSCLES, WITH MAXIMAL AEROBIC PERFORMANCE SIMILAR TO CONTROL SUBJECTS; 2) LOW EE DURING MOST ASANAS EXECUTION.	2015	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
8  885  22 EFFECT OF YOGA TRAINING ON REACTION TIME, RESPIRATORY ENDURANCE AND MUSCLE STRENGTH. THERE IS EVIDENCE THAT THE PRACTICE OF YOGA IMPROVES PHYSICAL AND MENTAL PERFORMANCE. THE PRESENT INVESTIGATION WAS UNDERTAKEN TO STUDY THE EFFECT OF YOGA TRAINING ON VISUAL AND AUDITORY REACTION TIMES (RTS), MAXIMUM EXPIRATORY PRESSURE (MEP), MAXIMUM INSPIRATORY PRESSURE (MIP), 40 MMHG TEST, BREATH HOLDING TIME AFTER EXPIRATION (BHTEXP), BREATH HOLDING TIME AFTER INSPIRATION (BHTINSP), AND HAND GRIP STRENGTH (HGS). TWENTY SEVEN STUDENT VOLUNTEERS WERE GIVEN YOGA TRAINING FOR 12 WEEKS. THERE WAS A SIGNIFICANT (P < 0.001) DECREASE IN VISUAL RT (FROM 270.0 +/- 6.20 (SE) TO 224.81 +/- 5.76 MS) AS WELL AS AUDITORY RT (FROM 194.18 +/- 6.00 TO 157.33 +/- 4.85 MS). MEP INCREASED FROM 92.61 +/- 9.04 TO 126.46 +/- 10.75 MMHG, WHILE MIP INCREASED FROM 72.23 +/- 6.45 TO 90.92 +/- 6.03 MMHG, BOTH THESE CHANGES BEING STATISTICALLY SIGNIFICANT (P < 0.05). 40 MMHG TEST AND HGS INCREASED SIGNIFICANTLY (P < 0.001) FROM 36.57 +/- 2.04 TO 53.36 +/- 3.95 S AND 13.78 +/- 0.58 TO 16.67 +/- 0.49 KG RESPECTIVELY. BHTEXP INCREASED FROM 32.15 +/- 1.41 TO 44.53 +/- 3.78S (P < 0.01) AND BHTINSP INCREASED FROM 63.69 +/- 5.38 TO 89.07 +/- 9.61 S (P < 0.05). OUR RESULTS SHOW THAT YOGA PRACTICE FOR 12 WEEKS RESULTS IN SIGNIFICANT REDUCTION IN VISUAL AND AUDITORY RTS AND SIGNIFICANT INCREASE IN RESPIRATORY PRESSURES, BREATH HOLDING TIMES AND HGS.	1992	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
9 1693  25 OXYGEN CONSUMPTION DURING VINIYOGA PRACTICE IN ADULTS. CONTEXT: THE PURPOSE OF THIS STUDY WAS TO MEASURE THE OXYGEN CONSUMPTION (VO2) DURING VINIYOGA YOGA MOVEMENTS (ASANAS) AND TO COMPARE VO2 WALKING AMONG ADULTS. METHODS: YOGA PRACTITIONERS (N = 10) WERE RECRUITED TO MEASURE VO2 WHILE AT REST (30 MIN), PRACTICING YOGA (16 MOVEMENTS WITH DIFFERENT VARIATIONS), AND TREADMILL WALKING AT 2 MPH (10 MIN) AND 3 MPH (10 MIN). VO2 WAS MEASURED USING A WHOLE-ROOM INDIRECT CALORIMETRY. EACH YOGA MOVEMENT WAS CATEGORIZED BY BODY ORIENTATION AS STANDING, LYING, AND SITTING. THE DIFFERENCES IN VO2 BETWEEN YOGA AND WALKING WERE EXAMINED USING PEARSON'S CORRELATIONS. DIFFERENCES IN VO2 BETWEEN POSES (STANDING, SITTING, AND LYING) WERE EXAMINED USING LINEAR REGRESSION MODELS. VO2. RESULTS: MEAN YOGA-VO2 FOR THE ENTIRE YOGA SESSION WAS 3.7 (STANDARD DEVIATION [SD] 0.43, RANGE: 4.4-8.9) ML/KG/MIN. YOGA-VO2 VARIED BY BODY ORIENTATION: STANDING = 7.5 (SD = 1.5) ML/KG/MIN, LYING = 5.3 (SD = 1.0) ML/KG/MIN, AND SITTING = 5.4 (SD = 1.1) ML/KG/MIN. AFTER ADJUSTING FOR BODY MASS, FREQUENCY OF YOGA PRACTICE, AND RESTING ENERGY EXPENDITURE, FEMALE GENDER WAS NEGATIVELY ASSOCIATED WITH MEAN YOGA VO2 FOR STANDING (B = -112.19, P < 0.05), LYING (B = -141.87, P < 0.05), AND SITTING (B = -129.96, P < 0.05). MEAN VO2 FOR WALKING 2 MPH WAS COMPARABLE WITH SITTING (R = 0.836, P < 0.05) AND LYING (R = 0.735, P < 0.05) WHEREAS WALKING AT 3 MPH WAS COMPARABLE WITH STANDING (R = 0.718, P < 0.05) AND SITTING (R = 0.760, P < 0.05). CONCLUSION: WE CONCLUDE THAT VO2 DURING YOGA PRACTICE IS COMPARABLE TO VO2 DURING SLOW TREADMILL WALKING AND MAY VARY BASED ON GENDER AND BODY ORIENTATION.	2018	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
10  416  24 BODY TEMPERATURE AND ENERGY EXPENDITURE DURING AND AFTER YOGA BREATHING PRACTICES TRADITIONALLY DESCRIBED AS COOLING. BACKGROUND IN TRADITIONAL YOGA TEXTS, SHEETALI AND SITKARI PRANAYAMAS ARE DESCRIBED AS COOLING. THE PRESENT STUDY WAS AIMED AT RECORDING THE SURFACE BODY TEMPERATURE, OXYGEN CONSUMED, AND CARBON DIOXIDE ELIMINATED BEFORE, DURING, AND AFTER PERFORMANCE OF SHEETALI AND SITKARI PRANAYAMAS. MATERIAL AND METHODS SEVENTEEN HEALTHY MALE VOLUNTEERS WITH AGES BETWEEN 19 TO 25 YEARS (AVERAGE AGE 20.7+/-1.8 YEARS) WERE ASSESSED IN 4 SESSIONS, VIZ. SHEETALI PRANAYAMA, SITKARI PRANAYAMA, BREATH AWARENESS AND QUIET LYING, ON 4 SEPARATE DAYS, IN RANDOM SEQUENCE. THE AXILLARY SURFACE BODY TEMPERATURE (TRUSCOPE II, SCHILLER, CHINA) AND METABOLIC VARIABLES (QUARK CPET, COSMED, ITALY) WERE RECORDED IN 3 PERIODS: BEFORE (5 MINUTES), DURING (18 MINUTES), AND AFTER (5 MINUTES), IN EACH OF THE 4 SESSIONS. THE HEAT INDEX WAS CALCULATED IN THE BEFORE AND AFTER PERIODS, BASED ON RECORDINGS OF AMBIENT TEMPERATURE AND HUMIDITY. DATA WERE ANALYZED USING SPSS (VERSION 24.0). RESULTS BODY TEMPERATURE INCREASED SIGNIFICANTLY DURING SHEETALI AND SITKARI (P<0.05, P<0.01; RESPECTIVELY) WHILE IT DECREASED AFTER BREATH AWARENESS AND QUIET LYING DOWN (P<0.01, P<0.001; RESPECTIVELY) WHEN COMPARED WITH RESPECTIVE POST-EXERCISE STATES. OXYGEN CONSUMPTION INCREASED BY 9.0% DURING SHEETALI (P<0.05) AND BY 7.6% DURING SITKARI (P<0.01) WHILE IT DECREASED SIGNIFICANTLY DURING (P<0.05) AND AFTER (P<0.01) QUIET LYING DOWN COMPARED TO RESPECTIVE PRE-EXERCISE STATES. CONCLUSIONS THE RESULTS DO NOT SUPPORT THE DESCRIPTION OF THESE YOGA BREATHING PRACTICES AS COOLING. THESE YOGA BREATHING PRACTICES MAY BE USED TO INDUCE A MILD HYPERMETABOLIC STATE.	2020	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
11 2252  25 THE METABOLIC COST OF HATHA YOGA. TO DETERMINE THE METABOLIC AND HEART RATE (HR) RESPONSES OF HATHA YOGA, 26 WOMEN (19-40 YEARS OLD) PERFORMED A 30-MINUTE HATHA YOGA ROUTINE OF SUPINE LYING, SITTING, AND STANDING ASANAS (I.E., POSTURES). SUBJECTS FOLLOWED IDENTICAL VIDEOTAPED SEQUENCES OF HATHA YOGA ASANAS. MEAN PHYSIOLOGICAL RESPONSES WERE COMPARED TO THE PHYSIOLOGICAL RESPONSES OF RESTING IN A CHAIR AND WALKING ON A TREADMILL AT 93.86 M.MIN(-1) [3.5 MILES PER HOUR (MPH)]. DURING THE 30-MINUTE HATHA YOGA ROUTINE, MEAN ABSOLUTE OXYGEN CONSUMPTION (VO(2)), RELATIVE VO(2), PERCENTAGE MAXIMAL OXYGEN CONSUMPTION (%VO(2)R), METABOLIC EQUIVALENTS (METS), ENERGY EXPENDITURE, HR, AND PERCENTAGE MAXIMAL HEART RATE (%MHR) WERE 0.45 L.MIN(-1), 7.59 ML.KG(-1).MIN(-1), 14.50%, 2.17 METS, 2.23 KCAL.MIN(-1), 105.29 B.MIN(-1), AND 56.89%, RESPECTIVELY. WHEN COMPARED TO RESTING IN A CHAIR, HATHA YOGA REQUIRED 114% GREATER O(2) (L.MIN(-1)), 111% GREATER O(2)(ML.KG(-1).MIN(-1)), 4,294% GREATER %VO(2)R, 111% GREATER METS, 108% GREATER KCAL.MIN(-1), 24% GREATER HR, AND 24% GREATER %MHR. WHEN COMPARED TO WALKING AT 93.86 M.MIN(-1), HATHA YOGA REQUIRED 54% LOWER O(2)(L.MIN(-1)), 53% LOWER O(2)(ML.KG(-1).MIN(-1)), 68% LOWER %VO(2)R, 53% LOWER METS, 53% LOWER KCAL.MIN(-1), 21% LOWER HR, AND 21% LOWER %MHR. THE HATHA YOGA ROUTINE IN THIS STUDY REQUIRED 14.50% VO(2)R, WHICH CAN BE CONSIDERED A VERY LIGHT INTENSITY AND SIGNIFICANTLY LIGHTER THAN 44.8% VO(2)R FOR WALKING AT 93.86 M.MIN(-1) (3.5 MPH). THE INTENSITY OF HATHA YOGA MAY BE TOO LOW TO PROVIDE A TRAINING STIMULUS FOR IMPROVING CARDIOVASCULAR FITNESS. ALTHOUGH PREVIOUS RESEARCH SUGGESTS THAT HATHA YOGA IS AN ACCEPTABLE FORM OF PHYSICAL ACTIVITY FOR ENHANCING MUSCULAR FITNESS AND FLEXIBILITY, THESE DATA DEMONSTRATE THAT HATHA YOGA MAY HAVE LITTLE, IF ANY, CARDIOVASCULAR BENEFIT.	2005	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
12 1676  31 OBJECTIVE AND SUBJECTIVE MEASURES OF EXERCISE INTENSITY DURING THERMO-NEUTRAL AND HOT YOGA. WHILE HOT YOGA HAS GAINED ENORMOUS POPULARITY IN RECENT YEARS, OWING IN PART TO INCREASED ENVIRONMENTAL CHALLENGE ASSOCIATED WITH EXERCISE IN THE HEAT, IT IS NOT CLEAR WHETHER HOT YOGA IS MORE VIGOROUS THAN THERMO-NEUTRAL YOGA. THEREFORE, THE AIM OF THIS STUDY WAS TO DETERMINE OBJECTIVE AND SUBJECTIVE MEASURES OF EXERCISE INTENSITY DURING CONSTANT INTENSITY YOGA IN A HOT AND THERMO-NEUTRAL ENVIRONMENT. USING A RANDOMIZED, CROSSOVER DESIGN, 14 PARTICIPANTS COMPLETED 2 IDENTICAL APPROXIMATELY 20-MIN YOGA SESSIONS IN A HOT (35.3 +/- 0.8 DEGREES C; HUMIDITY: 20.5% +/- 1.4%) AND THERMO-NEUTRAL (22.1 +/- 0.2 DEGREES C; HUMIDITY: 27.8% +/- 1.6%) ENVIRONMENT. OXYGEN CONSUMPTION AND HEART RATE (HR) WERE RECORDED AS OBJECTIVE MEASURES (PERCENTAGE OF MAXIMAL OXYGEN CONSUMPTION AND PERCENTAGE OF MAXIMAL HR (%HRMAX)) AND RATING OF PERCEIVED EXERTION (RPE) WAS RECORDED AS A SUBJECTIVE MEASURE OF EXERCISE INTENSITY. THERE WAS NO DIFFERENCE IN EXERCISE INTENSITY BASED ON PERCENTAGE OF MAXIMAL OXYGEN CONSUMPTION DURING HOT VERSUS THERMO-NEUTRAL YOGA (30.9% +/- 2.3% VS. 30.5% +/- 1.8%, P = 0.68). HOWEVER, EXERCISE INTENSITY WAS SIGNIFICANTLY HIGHER DURING HOT VERSUS THERMO-NEUTRAL YOGA BASED ON %HRMAX (67.0% +/- 2.3% VS. 60.8% +/- 1.9%, P = 0.01) AND RPE (12 +/- 1 VS. 11 +/- 1, P = 0.04). ACCORDING TO ESTABLISHED EXERCISE INTENSITIES, HOT YOGA WAS CLASSIFIED AS LIGHT-INTENSITY EXERCISE BASED ON PERCENTAGE OF MAXIMAL OXYGEN CONSUMPTION BUT MODERATE-INTENSITY EXERCISE BASED ON %HRMAX AND RPE WHILE THERMO-NEUTRAL YOGA WAS CLASSIFIED AS LIGHT-INTENSITY EXERCISE BASED ON PERCENTAGE OF MAXIMAL OXYGEN UPTAKE, %HRMAX, AND RPE. DESPITE THE ADDED HEMODYNAMIC STRESS AND PERCEPTION THAT YOGA IS MORE STRENUOUS IN A HOT ENVIRONMENT, WE OBSERVED SIMILAR OXYGEN CONSUMPTION DURING HOT VERSUS THERMO-NEUTRAL YOGA, CLASSIFYING BOTH EXERCISE MODALITIES AS LIGHT-INTENSITY EXERCISE.	2018	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
13 1120  27 EFFICACY OF HOT YOGA AS A HEAT STRESS TECHNIQUE FOR ENHANCING PLASMA VOLUME AND CARDIOVASCULAR PERFORMANCE IN ELITE FEMALE FIELD HOCKEY PLAYERS. PERROTTA, AS, WHITE, MD, KOEHLE, MS, TAUNTON, JE, AND WARBURTON, DER. EFFICACY OF HOT YOGA AS A HEAT STRESS TECHNIQUE FOR ENHANCING PLASMA VOLUME AND CARDIOVASCULAR PERFORMANCE IN ELITE FEMALE FIELD HOCKEY PLAYERS. J STRENGTH COND RES 32(10): 2878-2887, 2018-THIS INVESTIGATION EXAMINED THE EFFICACY OF HOT YOGA AS AN ALTERNATIVE HEAT STRESS TECHNIQUE FOR ENHANCING PLASMA VOLUME PERCENTAGE (PV%) AND CARDIOVASCULAR PERFORMANCE. TEN INTERNATIONAL CALIBER FEMALE FIELD HOCKEY PLAYERS COMPLETED SIX 60-MINUTE HOT YOGA SESSIONS USING PERMISSIVE DEHYDRATION OVER 6 DAYS, FOLLOWED BY A 6-DAY NATIONAL TEAM CAMP. CHANGES IN PV% WERE EXAMINED THROUGHOUT THE INTERVENTION AND POSTINTERVENTION PERIOD. A GRADED MAXIMAL EXERCISE TEST WAS PERFORMED IN A THERMONEUTRAL ENVIRONMENT (23.2 +/- 1.0 DEGREES C) 24 HOURS BEFORE AND 24 HOURS AFTER INTERVENTION. SIX DAYS OF HOT YOGA INITIATED A MODERATE STATE OF HYPOVOLEMIA (PV% = -3.5%, 90% CONFIDENCE LIMIT [CL] [-6.9 TO -0.13]), TRIVIAL IMPROVEMENTS IN MAXIMAL AEROBIC POWER (V[COMBINING DOT ABOVE]O2MAX) (EFFECT SIZE [ES] = 0.06, 90% CL [-0.16 TO 0.28]), AND RUN TIME TO EXHAUSTION (ES = 0.11, 90% CL [-0.07 TO 0.29]). SMALL MEANINGFUL IMPROVEMENTS WERE OBSERVED IN RUNNING SPEED (KM.H) AT VENTILATORY THRESHOLD (VT1) (ES = 0.34, 90% CL [-0.08 TO 0.76]), VT2 (ES = 0.53, 90% CL [-0.05 TO 1.1]), ALONG WITH ADAPTATIONS IN THE RESPIRATORY EXCHANGE RATIO DURING HIGH-INTENSITY EXERCISE (ES = -0.25, 90% CL [-0.62 TO 0.12]). A LARGE PLASMA VOLUME EXPANSION TRANSPIRED 72 HOURS AFTER INTERVENTION (PV% = 5.0%, 90% CL [1.3-8.7]) THAT CONTRACTED TO A SMALL EXPANSION AFTER 6 DAYS (PV% = 1.6%, 90% CL [-1.0 TO 4.2]). THIS INVESTIGATION PROVIDES PRACTITIONERS AN ALTERNATIVE HEAT STRESS TECHNIQUE CONDUCIVE FOR TEAM SPORT, INVOLVING MINIMAL EXERCISE STRESS THAT CAN PRESERVE MAXIMAL CARDIOVASCULAR PERFORMANCE OVER PERIODIZED REST WEEKS WITHIN THE YEARLY TRAINING PLAN. FURTHERMORE, IMPROVEMENTS IN SUBMAXIMAL PERFORMANCE AND A DELAYED HYPERVOLEMIC RESPONSE MAY PROVIDE A PERFORMANCE-ENHANCING EFFECT WHEN ENTERING A 6-DAY COMPETITION PERIOD.	2018	
                                                                                                                                                                                                                                                                                   
14  804  16 EFFECT OF YOGA ON AEROBIC AND ANAEROBIC POWER OF MUSCLES. AEROBIC POWER (VO2 MAX) AND ANAEROBIC POWER WERE ESTIMATED IN MEDICAL STUDENTS BEFORE AND AFTER SIX WEEKS OF YOGIC TRAINING. A SIGNIFICANT INCREASE IN AEROBIC POWER AND A SIGNIFICANT DECREASE IN ANAEROBIC POWER WAS OBSERVED. THIS MAY BE DUE TO CONVERSION OF SOME OF THE FAST TWITCH (F.T.) MUSCLE FIBRES INTO SLOW TWITCH FIBRES (S.T.) DURING YOGIC TRAINING.	1991	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
15  437  32 CARDIOVASCULAR AND METABOLIC EFFECTS OF INTENSIVE HATHA YOGA TRAINING IN MIDDLE-AGED AND OLDER WOMEN FROM NORTHERN MEXICO. BACKGROUND: HATHA YOGA (HY) CAN BE AN ALTERNATIVE TO IMPROVE PHYSICAL ACTIVITY IN MIDDLE-AGED AND OLDER WOMEN. HOWEVER, CONVENTIONAL HY (CHY) EXERCISING MAY NOT RESULT IN ENOUGH TRAINING STIMULUS TO IMPROVE CARDIOVASCULAR FITNESS. THE PURPOSE OF THIS STUDY WAS TO EVALUATE THE EFFECT OF AN INTENSIVE HY INTERVENTION (IHY) ON CARDIOVASCULAR RISK FACTORS IN MIDDLE-AGED AND OLDER WOMEN FROM NORTHERN MEXICO. MATERIALS AND METHODS: IN THIS PROSPECTIVE QUASIEXPERIMENTAL DESIGN, FOUR MIDDLE-AGED AND NINE OLDER CHY PRACTICING FEMALES (YOGINIS) WERE ENROLLED INTO AN 11-WEEK IHY PROGRAM CONSISTING OF 5 SESSIONS/WEEK FOR 90 MIN (55 SESSIONS). THE PROGRAM ADHERENCE, ASANA PERFORMANCE, AND WORK INTENSITY WERE ASSESSED ALONG THE INTERVENTION. ANTHROPOMETRIC [BODY MASS INDEX (BMI), % BODY FAT AND SIGMA SKIN FOLDS], CARDIOVASCULAR FITNESS [MAXIMAL EXPIRED AIR VOLUME (VE(MAX)), MAXIMAL O(2) CONSUMPTION (VO(2MAX)), MAXIMAL HEART RATE (HR(MAX)), SYSTOLIC (BPS) AND DIASTOLIC BLOOD PRESSURE (BPD)], BIOCHEMICAL [GLUCOSE, TRIACYLGLYCEROLS (TAG), TOTAL CHOLESTEROL (TC), HIGH-DENSITY LIPOPROTEIN CHOLESTEROL (HDL-C), AND LOW-DENSITY LIPOPROTEIN CHOLESTEROL (LDL-C)], AND DIETARY PARAMETERS WERE EVALUATED BEFORE AND AFTER IHY. RESULTS: DAILY CALORIC INTAKE (~1,916 KCAL/DAY), PROGRAM ADHERENCE (~85%), AND EXERCISING SKILLS (ASANA PERFORMANCE) WERE SIMILAR IN BOTH MIDDLE-AGED AND OLDER WOMEN. THE IHY PROGRAM DID NOT MODIFY ANY ANTHROPOMETRIC MEASUREMENTS. HOWEVER, IT INCREASED VO(2MAX) AND VE(MAX) AND HDL-C WHILE TAG AND LDL-C REMAINED STABLE IN BOTH MIDDLE-AGED AND OLDER GROUPS (P < 0.01). CONCLUSIONS: THE PROPOSED IHY PROGRAM IMPROVES DIFFERENT CARDIOVASCULAR RISK FACTORS (NAMELY VO(2MAX) AND HDL-C) IN MIDDLE-AGED AND OLDER WOMEN.	2009	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
16 1706  14 PATTERN OF BREATHING AND VENTILATORY RESPONSE TO CO2 IN SUBJECTS PRACTICING HATHA-YOGA. WE STUDIED EIGHT BELGIAN SUBJECTS WELL ADVANCED IN THE PRACTICE OF HATHA-YOGA AND COMPARED THEM WITH EIGHT SEX-, AGE-, AND HEIGHT-MATCHED CONTROL SUBJECTS. PRACTICE OF YOGA (RANGE 4-12 YR) INVOLVES CONTROL OF POSTURE AND MANIPULATION OF BREATHING, INCLUDING SLOW NEAR-VITAL CAPACITY MANEUVERS ACCOMPANIED BY APNEA AT END INSPIRATION AND END EXPIRATION. AVERAGE VALUES FOR THE YOGA AND THE CONTROL GROUP (IN PARENTHESES) ARE AS FOLLOWS: VENTILATION (VE) 5.53 1 X MIN-1 (7.07); TIDAL VOLUME (VT), 1.03 LITERS (0.56); RATE OF BREATHING, 5.5 MIN-1 (13.4); END-TIDAL PCO2, 39.0 TORR (35.3). ALL DIFFERENCES ARE SIGNIFICANT (P LESS THAN 0.05). VENTILATORY RESPONSE TO CO2 (REBREATHING TECHNIQUE) WAS SIGNIFICANTLY LOWER IN THE YOGA GROUP (P LESS THAN 0.01). THE REGRESSION RELATING VE TO VT DURING REBREATHING OF CO2 WAS VE = 8.1 (VT - 0.23) FOR THE YOGA GROUP AND VE = 15.8 (VT - 0.16) FOR THE CONTROL GROUP (P LESS THAN 0.005). WE ATTRIBUTE THESE CHANGES TO CHRONIC MANIPULATION OF RESPIRATION.	1981	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
17 1148  26 ENERGY EXPENDITURE IN VINYASA YOGA VERSUS WALKING. BACKGROUND: WHETHER THE ENERGY COST OF VINYASA YOGA MEETS THE CRITERIA FOR MODERATE-TO-VIGOROUS PHYSICAL ACTIVITY HAS NOT BEEN ESTABLISHED. PURPOSE: TO COMPARE ENERGY EXPENDITURE DURING ACUTE BOUTS OF VINYASA YOGA AND 2 WALKING PROTOCOLS. METHODS: PARTICIPANTS (20 MALES, 18 FEMALES) PERFORMED 60-MINUTE SESSIONS OF VINYASA YOGA (YOGA), TREADMILL WALKING AT A SELF-SELECTED BRISK PACE (SELF), AND TREADMILL WALKING AT A PACE THAT MATCHED THE HEART RATE OF THE YOGA SESSION (HR-MATCH). ENERGY EXPENDITURE WAS ASSESSED VIA INDIRECT CALORIMETRY. RESULTS: ENERGY EXPENDITURE WAS SIGNIFICANTLY LOWER IN YOGA COMPARED WITH HR-MATCH (DIFFERENCE = 79.5 +/- 44.3 KCAL; P < .001) AND SELF (DIFFERENCE = 51.7 +/- 62.6 KCAL; P < .001), BUT NOT IN SELF COMPARED WITH HR-MATCH (DIFFERENCE = 27.8 +/- 72.6 KCAL; P = .054). A SIMILAR PATTERN WAS OBSERVED FOR METABOLIC EQUIVALENTS (HR-MATCH = 4.7 +/- 0.8, SELF = 4.4 +/- 0.7, YOGA = 3.6 +/- 0.6; P < .001). ANALYSES USING ONLY THE INITIAL 45 MINUTES FROM EACH OF THE SESSIONS, WHICH EXCLUDED THE RESTORATIVE COMPONENT OF YOGA, SHOWED ENERGY EXPENDITURE WAS SIGNIFICANTLY LOWER IN YOGA COMPARED WITH HR-MATCH (DIFFERENCE = 68.0 +/- 40.1 KCAL; P < .001) BUT NOT COMPARED WITH SELF (DIFFERENCE = 15.1 +/- 48.7 KCAL; P = .189). CONCLUSIONS: YOGA MEETS THE CRITERIA FOR MODERATE-INTENSITY PHYSICAL ACTIVITY. THUS, YOGA MAY BE A VIABLE FORM OF PHYSICAL ACTIVITY TO ACHIEVE PUBLIC HEALTH GUIDELINES AND TO ELICIT HEALTH BENEFITS.	2017	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
18  417  34 BODY TEMPERATURE IN PRACTITIONERS OF A YOGA BREATHING TECHNIQUE CONSIDERED TO BE HEAT GENERATING. CONTEXT: SURYABHEDA PRANAYAMA IS TRADITIONALLY DESCRIBED AS "INCREASING THE INNER FIRE" AND IS BELIEVED TO BE HEAT GENERATING. AIMS: THE PRESENT STUDY AIMED AT DETERMINING WHETHER THE SURFACE BODY TEMPERATURE WOULD INCREASE AFTER SURYABHEDA PRANAYAMA PRACTICE COMPARED WITH SITTING QUIETLY FOR THE SAME DURATION AS A CONTROL. MATERIALS AND METHODS: NINETEEN PARTICIPANTS WITH EXPERIENCE OF SURYABHEDA PRANAYAMA PRACTICE (GROUP MEAN EXPERIENCE +/- STANDARD DEVIATION, 30.2 +/- 22.8 MONTHS) WERE ASSESSED IN 3 SESSIONS ON SEPARATE DAYS. THE SESSIONS WERE (I) SURYABHEDA PRANAYAMA WITH PHYSIOLOGICAL LOCKS OR BREATH RETENTION, (II) SURYABHEDA PRANAYAMA WITHOUT PHYSIOLOGICAL LOCKS OR BREATH RETENTION, AND (III) QUIET SITTING (CONTROL SESSION). THE AXILLARY SURFACE BODY TEMPERATURE WAS MONITORED IN ALL THREE SESSIONS BEFORE (5 MIN), DURING (15 MIN), AND AFTER (5 MIN) THE INTERVENTION. AMBIENT TEMPERATURE AND HUMIDITY IN THE RECORDING CABIN USED FOR TESTING WERE NOTED. FROM THE AMBIENT TEMPERATURE AND HUMIDITY, THE HEAT INDEX WAS DERIVED. STATISTICAL ANALYSIS: REPEATED MEASURES ANALYSES OF VARIANCE WERE PERFORMED TO COMPARE VALUES BEFORE, DURING, AND AFTER THE 3 SESSIONS, USING SPSS VERSION 24.0. RESULTS: THE SURFACE BODY TEMPERATURE INCREASED DURING AND AFTER SURYABHEDA PRANAYAMA WITH PHYSIOLOGICAL LOCKS (P < 0.001; P < 0.001), SURYABHEDA PRANAYAMA WITHOUT PHYSIOLOGICAL LOCKS (P < 0.01; P < 0.001), AND QUIET SITTING (P < 0.001; P < 0.001) COMPARED TO THE RESPECTIVE BEFORE VALUES. CONCLUSION: THE CONTROL (I.E., QUIET SITTING) AND EXPERIMENTAL SESSIONS (I.E., SURYABHEDA WITH LOCKS AND SURYABHEDA WITHOUT LOCKS) SHOWED A COMPARABLE INCREASE IN THE SURFACE BODY TEMPERATURE. HENCE, THE INCREASE IN SURFACE BODY TEMPERATURE DURING AND AFTER EXPERIMENTAL SESSIONS DOES NOT APPEAR TO BE RELATED TO THE PRANAYAMA TECHNIQUES. THE POSSIBLE FACTORS WHICH MAY HAVE CONTRIBUTED TO INCREASED SURFACE BODY TEMPERATURE IN THE CONTROL AND EXPERIMENTAL SESSIONS HAVE BEEN DISCUSSED.	2020	
                                                                                                                                                                                                                                                                                                                                                                                                                             
19 1316  28 HEART RATE AND THERMAL RESPONSES TO POWER YOGA. BACKGROUND: AND PURPOSE: YOGA HAS GROWN IN POPULARITY AND MAY OFFER A VIABLE ALTERNATIVE FORM OF PHYSICAL ACTIVITY. THE PURPOSE OF THIS STUDY WAS TO EXAMINE HEART RATE, HYDRATION, AND THERMAL RESPONSES TO A POWER YOGA SEQUENCE. MATERIALS AND METHODS: TWENTY-SEVEN MEN AND WOMEN (N=4/23; MEAN+/-SD AGE=23.3+/-3.3 YEARS; BMI=23+/-3KGM(-2)) UNDERWENT APPROXIMATELY 45MIN OF POWER YOGA. HEART RATE AND SKIN TEMPERATURE WERE RECORDED. MASS WAS MEASURED BEFORE AND AFTER EXERCISE TO ESTIMATE FLUID LOSS. TIME SPENT IN LIGHT, MODERATE, AND VIGOROUS HEART RATE ZONES WAS CALCULATED. RESULTS: HEART RATE AND SKIN TEMPERATURE INCREASED (P<0.0001). PARTICIPANTS SPENT MORE TIME IN MODERATE AND VIGOROUS HEART RATE ZONES THAN IN LIGHT INTENSITY (P<0.0001). THERE WAS A REDUCTION IN BODY MASS (-0.28+/-0.13KG, P<0.0001). CONCLUSION: POWER YOGA MAY BE CONSIDERED MODERATE-VIGOROUS INTENSITY EXERCISE, BASED ON HEART-RATE.	2018	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
20 1881  21 REDUCED HYPOXIC VENTILATORY RESPONSE WITH PRESERVED BLOOD OXYGENATION IN YOGA TRAINEES AND HIMALAYAN BUDDHIST MONKS AT ALTITUDE: EVIDENCE OF A DIFFERENT ADAPTIVE STRATEGY? YOGA INDUCES LONG-TERM CHANGES IN RESPIRATORY FUNCTION AND CONTROL. WE TESTED WHETHER IT REPRESENTS A SUCCESSFUL STRATEGY FOR HIGH-ALTITUDE ADAPTATION. WE COMPARED VENTILATORY, CARDIOVASCULAR AND HEMATOLOGICAL PARAMETERS IN: 12 CAUCASIAN YOGA TRAINEES AND 12 CONTROL SEA-LEVEL RESIDENTS, AT BASELINE AND AFTER 2-WEEK EXPOSURE TO HIGH ALTITUDE (PYRAMID LABORATORY, NEPAL, 5,050 M), 38 ACTIVE LIFESTYLE HIGH-ALTITUDE NATIVES (SHERPAS) AND 13 CONTEMPLATIVE LIFESTYLE HIGH-ALTITUDE NATIVES WITH PRACTICE OF YOGA-LIKE RESPIRATORY EXERCISES (BUDDHIST MONKS) STUDIED AT 5,050 M. AT BASELINE, HYPOXIC VENTILATORY RESPONSE (HVR), RED BLOOD CELL COUNT AND HEMATOCRIT WERE LOWER IN CAUCASIAN YOGA TRAINEES THAN IN CONTROLS. AFTER 14 DAYS AT ALTITUDE, YOGA TRAINEES SHOWED SIMILAR OXYGEN SATURATION, BLOOD PRESSURE, RR INTERVAL COMPARED TO CONTROLS, BUT LOWER HVR (-0.44 +/- 0.08 VS. -0.98 +/- 0.21 L/MIN/M/%SAO(2), P < 0.05), MINUTE VENTILATION (8.3 +/- 0.9 VS. 10.8 +/- 1.6 L/MIN, P < 0.05), BREATHING RATE (INDICATING HIGHER VENTILATORY EFFICIENCY), AND LOWER RED BLOOD CELL COUNT, HEMOGLOBIN, HEMATOCRIT, ALBUMIN, ERYTHROPOIETIN AND SOLUBLE TRANSFERRIN RECEPTORS. HYPOXIC VENTILATORY RESPONSE IN MONKS WAS LOWER THAN IN SHERPAS (-0.23 +/- 0.05 VS. -0.63 +/- 0.09 L/MIN/M/%SAO(2), P < 0.05); VALUES WERE SIMILAR TO BASELINE DATA OF YOGA TRAINEES AND CAUCASIAN CONTROLS, RESPECTIVELY. RED BLOOD CELL COUNT AND HEMATOCRIT WERE LOWER IN MONKS AS COMPARED TO SHERPAS. IN CONCLUSION, CAUCASIAN SUBJECTS PRACTICING YOGA MAINTAIN A SATISFACTORY OXYGEN TRANSPORT AT HIGH ALTITUDE, WITH MINIMAL INCREASE IN VENTILATION AND WITH REDUCED HEMATOLOGICAL CHANGES, RESEMBLING HIMALAYAN NATIVES. RESPIRATORY ADAPTATIONS INDUCED BY THE PRACTICE OF YOGA MAY REPRESENT AN EFFICIENT STRATEGY TO COPE WITH ALTITUDE-INDUCED HYPOXIA.	2007