1 552 143 CORE MUSCLE FUNCTION DURING SPECIFIC YOGA POSES. OBJECTIVE: TO ASSESS THE POTENTIAL USE OF 11 YOGA POSES IN SPECIFIC TRAINING AND REHABILITATION PROGRAMS VIA EXAMINATION OF THE MUSCLE ACTIVATION PATTERNS IN SELECTED TRUNK AND HIP MUSCLES. DESIGN: REPEATED-MEASURES DESCRIPTIVE STUDY. SETTING: UNIVERSITY LABORATORY, US. PARTICIPANTS: THIRTY HEALTHY YOGA PRACTITIONERS WITH MORE THAN 3 MONTHS YOGA PRACTICE EXPERIENCE (MEAN AGE+/-SD, 32.0+/-12.3 Y; 8 M/22 F) PARTICIPATED. INTERVENTIONS: SURFACE ELECTROMYOGRAPHIC SIGNALS OF UPPER RECTUS ABDOMINIS, LOWER RECTUS ABDOMINIS, LONGISSIMUS THORACIS, EXTERNAL OBLIQUE ABDOMINIS AND GLUTEUS MAXIMUM MUSCLE WERE RECORDED IN 11 YOGA POSES: HALFWAY LIFT, FORWARD FOLD, DOWNWARD FACING DOG, UPWARD FACING DOG, HIGH PLANK, LOW PLANK, CHAIR, MOUNTAIN WITH ARMS DOWN, MOUNTAIN WITH ARMS UP, WARRIOR 1 (BOTH SIDES). MAIN OUTCOME MEASURES: ROOT MEAN SQUARE VALUES OF EACH MUSCLE DURING EACH POSE, NORMALIZED BY THE MAXIMAL VOLUNTARY CONTRACTION. RESULTS: THERE WERE SIGNIFICANT MAIN EFFECTS OF POSE (P<.001) AND MUSCLE (P<.001), AND A SIGNIFICANT POSEXMUSCLE INTERACTION (P=.001). THE POST HOC ANALYSIS REVEALED UNIQUE PATTERNS FOR THE FIVE MUSCLES OF INTEREST FOR EACH OF THE 11 POSES (P<.024). CONCLUSIONS: VARIATIONS IN CORE MUSCLE FIRING PATTERNS DEPEND ON THE TRUNK AND PELVIC POSITIONS DURING THESE POSES. TRAINING PROGRAMS CAN BE DEVELOPED BY CHOOSING PARTICULAR POSES TO TARGET SPECIFIC CORE MUSCLES FOR ADDRESSING LOW BACK PAIN AND DECLINES IN PERFORMANCE. THE HIGH PLANK, LOW PLANK AND DOWNWARD FACING DOG POSES ARE EFFECTIVE FOR STRENGTHENING EXTERNAL OBLIQUE ABDOMINIS, CHAIR AND WARRIOR 1 POSES FOR TARGETING GLUTEUS MAXIMUM, AND CHAIR AND HALFWAY LIFT POSES FOR STRENGTHENING LONGISSIMUS THORACIS. AND THESE THREE MUSCLES COULD BE STRENGTHENED BY THE UPWARD FACING DOG POSE. 2014 2 647 23 DOWNWARD DOG BECOMES FIT BODY, INC.: A CONTENT ANALYSIS OF 40 YEARS OF FEMALE COVER IMAGES OF YOGA JOURNAL. THE PRESENT ANALYSIS INVESTIGATED TEMPORAL TRENDS IN PHYSICAL APPEARANCE ATTRIBUTES AND ATTIRE WORN BY FEMALE COVER MODELS OF YOGA JOURNAL MAGAZINE BETWEEN THE YEARS 1975-2015. COVERS FEATURING A SINGLE FEMALE MODEL (N=168) WERE CODED FOR: POSE ACTIVITY, AMOUNT OF BODY VISIBILITY, PERCEIVED BODY SIZE, BODY SHAPE, BREAST SIZE, SKIN EXPOSURE, AND REVEALING OR FORM-FITTING ATTIRE. WHEN COLLAPSED ACROSS ALL DECADES, THE MAJORITY OF COVER MODELS WAS ACTIVELY POSED WITH HIGH BODY VISIBILITY, RATED AS AT MOST LOW NORMAL WEIGHT, POSSESSED EITHER A "THIN/LEAN" OR "SKINNY/BONEY" BODY SHAPE, AND WERE "FLAT-CHESTED" OR "SMALL-BREASTED". GREATER BODY VISIBILITY, POSE ACTIVITY, THINNESS/LEANNESS, SKIN EXPOSURE, AND FORM-FITTING ATTIRE WERE FEATURED ON MORE RECENT YEARS' COVERS. FINDINGS SUGGEST THAT THE FEMALE "YOGA BODY" CONFORMS TO THE CONTEMPORARY THIN- AND-TONED MEDIA FITNESS IDEAL, PARTICULARLY RECENTLY, WHICH MAY PROMOTE OBJECTIFIED BODY COMPETENCE, AN UNHEALTHY DRIVE FOR LEANNESS, AND DISSUADE HIGHER WEIGHT WOMEN FROM CONSIDERING YOGA PRACTICE. 2017 3 1757 34 POSITION OF THE HIP IN YOGA. BACKGROUND: YOGA IS GROWING IN POPULARITY AS A FORM OF EXERCISE THROUGHOUT THE WORLD. ORTHOPEDIC PATIENTS PARTICIPATE IN YOGA, YET LITTLE IS KNOWN ABOUT THE RANGES-OF-MOTION OF THE HIP WITHIN VARIOUS YOGA POSES. ORTHOPEDIC SURGEONS ARE UNSURE ABOUT WHAT POTENTIAL POSITIONS THEIR PATIENTS ARE PLACING THEIR HIPS DURING A YOGA PRACTICE. THE AIM OF THIS STUDY IS TO QUANTIFY THE DEGREE OF HIP MOTION WITH COMMON YOGA POSES. METHODS: TWENTY HEALTHY, REGULAR PRACTITIONERS OF YOGA PERFORMED 11 DIFFERENT YOGA POSES IN A STANDARDIZED FASHION. MOTION ANALYSIS WAS USED TO CAPTURE RANGE-OF-MOTION OF THE HIP DURING EACH POSE. RESULTS: MANY YOGA POSES PUT THE HIP IN EXTREMES OF MOTION. POSES SUCH AS DOWNWARD DOG, FORWARD FOLD, SEATED TWIST, AND PIGEON STRESSED THE HIP IN FLEXION. WARRIOR 1, WARRIOR 2, CRESCENT LUNGE, PIGEON, AND TRIANGLE STRESSED THE HIP IN EXTENSION. EAGLE AND SEATED TWIST PUT THE HIP IN HIGHER ADDUCTION, WHILE HALF MOON, EAGLE, AND TRIANGLE PRODUCED MORE HIP INTERNAL ROTATION. CONCLUSION: MANY POSES WERE FOUND TO REACH EXTREMES OF HIP MOTION. THIS STUDY MAY HELP GUIDE THE ORTHOPEDIC SURGEON IN COUNSELING HIP ARTHROPLASTY AND HIP IMPINGEMENT PATIENTS ABOUT YOGA-RELATED ACTIVITY. BY KNOWING WHICH POSES POTENTIALLY STRESS THE HIP IN PARTICULAR PLANES OF MOTION, SURGEONS MAY BETTER INFORM THEIR PATIENTS WHO ARE RETURNING TO YOGA AFTER INJURY OR SURGERY. 2018 4 1965 30 SERIAL CASE REPORTING YOGA FOR IDIOPATHIC AND DEGENERATIVE SCOLIOSIS. BACKGROUND: NON-SURGICAL TECHNIQUES FOR TREATING SCOLIOSIS FREQUENTLY FOCUS ON REALIGNING THE SPINE, TYPICALLY BY MUSCULAR RELAXATION OR MUSCULAR OR LIGAMENTOUS STRETCHING. HOWEVER, SUCH TREATMENTS, WHICH INCLUDE PHYSICAL THERAPEUTIC, CHIROPRACTIC, AND BRACING TECHNIQUES, ARE INCONSISTENTLY SUPPORTED BY CURRENT EVIDENCE. IN THIS STUDY, WE ASSESS THE POSSIBLE BENEFITS OF ASYMMETRICAL STRENGTHENING OF TRUNCAL MUSCLES ON THE CONVEX SIDE OF THE SCOLIOTIC CURVE THROUGH A SINGLE YOGA POSE, THE SIDE PLANK POSE, IN IDIOPATHIC AND DEGENERATIVE SCOLIOSIS. METHODS: TWENTY-FIVE PATIENTS WITH IDIOPATHIC OR DEGENERATIVE SCOLIOSIS AND PRIMARY CURVES MEASURING 6 TO 120 DEGREES BY THE COBB METHOD HAD SPINAL RADIOGRAPHS AND WERE THEN TAUGHT THE SIDE PLANK POSE. AFTER 1 WEEK PERFORMING THE POSE WITH CONVEXITY DOWNWARD FOR 10 TO 20 SECONDS, THEY WERE INSTRUCTED TO MAINTAIN THE POSTURE ONCE DAILY FOR AS LONG AS POSSIBLE ON THAT ONE SIDE ONLY. A SECOND SERIES OF SPINAL RADIOGRAPHS WAS TAKEN 3 TO 22 MONTHS LATER. PRE- AND POST-YOGA COBB MEASUREMENTS WERE COMPARED. RESULTS: THE MEAN SELF-REPORTED PRACTICE OF THE YOGA POSE WAS 1.5 MINUTES PER DAY, 6.1 DAYS PER WEEK, FOR A MEAN FOLLOW-UP PERIOD OF 6.8 MONTHS. AMONG ALL PATIENTS, A SIGNIFICANT IMPROVEMENT IN THE COBB ANGLE OF THE PRIMARY SCOLIOTIC CURVE OF 32.0% WAS FOUND. AMONG 19 COMPLIANT PATIENTS, THE MEAN IMPROVEMENT ROSE TO 40.9%. IMPROVEMENTS DID NOT DIFFER SIGNIFICANTLY AMONG ADOLESCENT IDIOPATHIC AND DEGENERATIVE SUBTYPES (49.6% AND 38.4%, RESPECTIVELY). CONCLUSIONS: ASYMMETRICALLY STRENGTHENING THE CONVEX SIDE OF THE PRIMARY CURVE WITH DAILY PRACTICE OF THE SIDE PLANK POSE HELD FOR AS LONG AS POSSIBLE FOR AN AVERAGE OF 6.8 MONTHS SIGNIFICANTLY REDUCED THE ANGLE OF PRIMARY SCOLIOTIC CURVES. THESE RESULTS WARRANT FURTHER TESTING. 2014 5 1283 43 GLUTEAL MUSCLE ACTIVATION DURING COMMON YOGA POSES. BACKGROUND: APPROXIMATELY 24% OF PHYSICAL THERAPISTS REPORT REGULARLY USING YOGA TO STRENGTHEN MAJOR MUSCLE GROUPS. ALTHOUGH CLINICIANS AND ATHLETES OFTEN USE YOGA AS A FORM OF STRENGTH TRAINING, LITTLE IS KNOWN ABOUT THE ACTIVATION OF SPECIFIC MUSCLE GROUPS DURING YOGA POSES, INCLUDING THE GLUTEUS MAXIMUS AND MEDIUS. HYPOTHESIS/PURPOSE: THE PURPOSE OF THIS STUDY WAS TO MEASURE GLUTEUS MAXIMIMUS AND GLUTEUS MEDIUS ACTIVATION VIA ELECTROMYOGRAPHY (EMG) DURING FIVE COMMON YOGA POSES. A SECONDARY PURPOSE OF THE CURRENT STUDY WAS TO EXAMINE DIFFERENCES IN MUSCLE ACTIVATION BETWEEN SEXES AND EXPERIENCE LEVELS. STUDY DESIGN: CROSS-SECTIONAL. METHODS: THIRTY-ONE HEALTHY MALES AND FEMALES AGED 18-35 YEARS WERE TESTED DURING FIVE YOGA POSES PERFORMED IN A RANDOMIZED ORDER. SURFACE EMG ELECTRODES WERE PLACED ON SUBJECTS' RIGHT GLUTEUS MAXIMUS AND GLUTEUS MEDIUS. SUBJECTS PERFORMED THE POSES ON BOTH SIDES FOLLOWING A MAXIMAL VOLUNTARY ISOMETRIC CONTRACTION (MVIC) TEST FOR EACH MUSCLE. ALL YOGA POSE EMG DATA WERE NORMALIZED TO THE CORRESPONDING MUSCLE MVIC DATA. RESULTS: HIGHEST GLUTEUS MAXIMUS ACTIVATION OCCURRED DURING HALF MOON POSE ON THE LIFTED/BACK LEG (63.3% MVIC), FOLLOWED BY THE STANCE/FRONT LEG DURING HALF MOON POSE (61.7%), THEN THE LIFTED/BACK LEG DURING WARRIOR THREE POSE (46.1%). HIGHEST GLUTEUS MEDIUS ACTIVATION OCCURRED DURING HALF MOON POSE ON THE LIFTED/BACK LEG (41.9%), FOLLOWED BY THE LIFTED/BACK LEG DURING THE WARRIOR THREE POSE (41.6%). A SIGNIFICANT DIFFERENCE WAS FOUND IN %MVIC OF GLUTEUS MEDIUS ACTIVITY BETWEEN MALE AND FEMALE SUBJECTS (P = 0.026), AND BETWEEN EXPERIENCED AND INEXPERIENCED SUBJECTS (P = 0.050), INDICATING HIGHER ACTIVATION AMONG MALES AND INEXPERIENCED SUBJECTS, RESPECTIVELY. CONCLUSION: HALF MOON POSE AND WARRIOR THREE POSE ELICITED THE HIGHEST ACTIVATION FOR BOTH THE GLUTEUS MAXIMUS AND THE GLUTEUS MEDIUS. HIGHER GLUTEUS MEDIUS ACTIVATION WAS SEEN IN MALES AND INEXPERIENCED SUBJECTS COMPARED TO THEIR FEMALE AND EXPERIENCED COUNTERPARTS. LEVEL OF EVIDENCE: 3. 2021 6 1494 34 INTERRATER RELIABILITY OF AN OBSERVATIONAL RATING SCALE AND VIDEO ANALYSIS OF YOGA POSES. CONTEXT: YOGA IS INCREASINGLY POPULAR, NOT ONLY AS A FORM OF RECREATIONAL EXERCISE BUT ALSO AS A PHYSICIAN-RECOMMENDED INTERVENTION FOR HEALTH CONDITIONS. WHILE SERIOUS ADVERSE EFFECTS ACCOMPANYING YOGA PRACTICE ARE RARE, POSES THAT INVOLVE UPPER-EXTREMITY WEIGHT-BEARING HAVE A HIGH RISK OF DISCOMFORT. TO BETTER UNDERSTAND FACTORS CONTRIBUTING TO ADVERSE EFFECTS, THERE IS A CRITICAL NEED FOR ROBUST INSTRUMENTS THAT OBJECTIVELY EVALUATE POSE PERFORMANCE. THE PURPOSE OF THIS STUDY WAS TO ASSESS THE INTERRATER RELIABILITY OF AN OBSERVATIONAL SCALE DEVELOPED TO ASSESS THE ALIGNMENT OF 3 YOGA POSES. DESIGN: CROSS-SECTIONAL EXPERIMENTAL STUDY. METHODS: THIRTY-EIGHT INDIVIDUALS WERE GIVEN STANDARDIZED INSTRUCTIONS AND PERFORMED 3 POSES (DOWNWARD DOG, PLANK, AND SIDE PLANK). LATERAL VIDEOS WERE RATED BY 2 RATERS. A RATING SCALE EVALUATING THE ALIGNMENT OF 7 REGIONS WAS DEVELOPED BY THE STUDY TEAM WITH INPUT FROM YOGA TEACHERS. DESCRIPTIVE STATISTICS WERE USED TO SUMMARIZE THE PERCENTAGE OF SUBJECTS SHOWING IDEAL ALIGNMENT AND DEVIATIONS. INTERRATER RELIABILITY WAS QUANTIFIED USING COHEN KAPPA COEFFICIENT (KAPPA). RESULTS: IN DOWNWARD DOG, THE PREVALENCE OF IDEAL ALIGNMENT WAS 20%, 28%, AND 37%, AT THE NECK, SHOULDER, AND BACK, RESPECTIVELY; KAPPA RANGED FROM .44 TO .69. IN PLANK, THE PREVALENCE OF IDEAL ALIGNMENT WAS 31%, 45%, AND 54% AT THE NECK, SHOULDER, AND BACK, RESPECTIVELY; KAPPA RANGED FROM .47 TO .95. IN SIDE PLANK, THE PREVALENCE OF IDEAL ALIGNMENT WAS 16, 41%, AND 24%, AT THE NECK, SHOULDER, AND BACK, RESPECTIVELY; KAPPA RANGED FROM .20 TO .84. CONCLUSION: THE OBSERVATIONAL SCALE FOUND A HIGH PREVALENCE OF DEVIATIONS, AND DEMONSTRATED FAIR TO SUBSTANTIAL INTERRATER AGREEMENT. 2022 7 58 42 A COMPARISON OF EMG OUTPUT OF FOUR LOWER EXTREMITY MUSCLES DURING SELECTED YOGA POSTURES. THE PURPOSE OF THIS STUDY WAS TO USE SURFACE ELECTROMYOGRAPHY (EMG) ANALYSIS TO EXAMINE THE MUSCLE ACTIVATION OF THE ANTERIOR TIBIALIS (TA), GASTROCNEMIUS (GA), RECTUS FEMORIS (RF) AND BICEPS FEMORIS (BF) MUSCLES DURING SEVERAL YOGA POSES: TREE POSE (VRKSASHANA), HALF MOON POSE (ARDHA CHANDRASANA) AND WARRIOR III (VIRABADRASANA) WHEN COMPARED TO A REST POSE (MOUNTAIN POSE). TEN HEALTHY FEMALES WITH MORE THAN 3 MONTHS OF CONTINUOUS YOGA EXPERIENCE WHO PRACTICED AT LEAST 1.5H PER WEEK WERE RECRUITED. EMG ACTIVITY WAS RECORDED FROM THE AFOREMENTIONED MUSCLES DURING MOUNTAIN POSE ("REST") FOR 30S, THREE TIMES. SUBJECTS THEN PERFORMED THE FOLLOWING YOGA POSES IN A RANDOMIZED SEQUENCE WHILE SURFACE EMG ACTIVITY WAS RECORDED: TREE POSE, HALF-MOON, AND WARRIOR III. EACH POSE WAS HELD FOR 20S TO 30S AND PERFORMED THREE TIMES. EMG DATA WERE BAND PASS FILTERED AND THE ROOT MEAN SQUARE (RMS) WAS OBTAINED. THE PEAK RMS OF EACH OF THE RESTING TRIALS WAS OBTAINED AND AVERAGED TO PRODUCE AN AVERAGE PEAK RESTING RMS VALUE. THE STUDY REVEALED SIGNIFICANTLY GREATER EMG ACTIVITY IN TA AND GA IN ALL THREE POSES WHEN COMPARED TO BF AND RF. BF PRODUCED GREATER EMG ACTIVITY THAN RF IN WARRIOR III. IN CONCLUSION, SINGLE LIMB YOGA POSES REQUIRE INCREASED USE OF THE ANKLE MUSCULATURE WHEN COMPARED TO THIGH MUSCULATURE. 2019 8 1348 32 IDENTIFYING YOGA-BASED KNEE STRENGTHENING EXERCISES USING THE KNEE ADDUCTION MOMENT. BACKGROUND: THIS STUDY AIMED TO COMPARE MUSCLE ACTIVATIONS, CO-CONTRACTION INDICES, AND THE KNEE ADDUCTION MOMENT BETWEEN STATIC STANDING YOGA POSTURES TO IDENTIFY APPROPRIATE EXERCISES FOR KNEE OSTEOARTHRITIS. METHODS: HEALTHY YOUNG WOMEN (24.4 (5.4) YEARS, 23.1 (3.7) KG/M(2)) PARTICIPATED. PRIMARY OUTCOME VARIABLES WERE ELECTROMYOGRAPHIC ACTIVATIONS OF THE VASTUS LATERALIS, RECTUS FEMORIS, VASTUS MEDIALIS, BICEPS FEMORIS, AND SEMITENDINOSUS; CO-CONTRACTION BETWEEN THE BICEPS FEMORIS AND RECTUS FEMORIS, AND VASTUS LATERALIS AND VASTUS MEDIALIS; AND KNEE ADDUCTION MOMENTS OF BOTH LEGS DURING SIX STATIC, STANDING YOGA POSTURES (TWO SQUATTING POSTURES, TWO LUNGING POSTURES, A HAMSTRING STRETCH, AND A SINGLE-LEG BALANCE POSTURE). A TWO-FACTOR REPEATED MEASURES ANALYSIS OF VARIANCE WAS USED TO IDENTIFY DIFFERENCES IN MUSCLE AMPLITUDES, CO-CONTRACTIONS, AND KNEE ADDUCTION MOMENT BETWEEN POSTURES AND LEGS. FINDINGS: QUADRICEPS ACTIVATIONS WERE HIGHEST DURING SQUAT AND LUNGE POSTURES (P 0.05). KNEE JOINT TRAVELLED INTO 9.5 DEGREES OF EXTENSION AND SLIGHT ADDUCTION OF 1.94 DEGREES WHILST EXPRESSING THE LARGEST KNEE JOINT ADDUCTION MOMENTS (0.30 +/- 0.22 NM/KG) IN THE TRIANGLE POSE. THE DISTRIBUTION OF THE ANGULAR IMPULSE OF THE LOWER LIMB JOINTS INDICATED THAT THE HIP JOINT CONTRIBUTED SIGNIFICANTLY THE MOST IN THE SAGITTAL AND FRONTAL PLANES OF THE THREE YOGA MANOEUVRES (P < 0.05), RANGING FROM 51.67% TO 70.56%. RESULTS INDICATED THAT TRIANGLE POSE MAY BE SUPERIOR TO THE OTHER TWO MANOEUVRES, WHICH IMPROVED HIP JOINT ROM, STRENGTH, AND DYNAMIC STABILITY. HOWEVER, KNEE INJURIES SUCH AS OSTEOARTHRITIS (OA) SHOULD BE CONSIDERED BECAUSE OF THE LARGE KNEE EXTENSOR ANGLE AND ADDUCTOR MOMENTS. 2021 12 1365 25 IMPACT OF 10-WEEKS OF YOGA PRACTICE ON FLEXIBILITY AND BALANCE OF COLLEGE ATHLETES. BACKGROUND: WITH CLEARER EVIDENCE OF ITS BENEFITS, COACHES, AND ATHLETES MAY BETTER SEE THAT YOGA HAS A ROLE IN OPTIMIZING PERFORMANCE. AIMS: TO DETERMINE THE IMPACT OF YOGA ON MALE COLLEGE ATHLETES (N = 26). METHODS: OVER A 10-WEEK PERIOD, A YOGA GROUP (YG) OF ATHLETES (N = 14) TOOK PART IN BIWEEKLY YOGA SESSIONS; WHILE A NONYOGA GROUP (NYG) OF ATHLETES (N = 12) TOOK PART IN NO ADDITIONAL YOGA ACTIVITY. PERFORMANCE MEASURES WERE OBTAINED IMMEDIATELY BEFORE AND AFTER THIS PERIOD. MEASUREMENTS OF FLEXIBILITY AND BALANCE, INCLUDED: SIT-REACH (SR), SHOULDER FLEXIBILITY (SF), AND STORK STAND (SS); DYNAMIC MEASUREMENTS CONSISTED OF JOINT ANGLES (JA) MEASURED DURING THE PERFORMANCE OF THREE DISTINCT YOGA POSITIONS (DOWNWARD DOG [DD]; RIGHT FOOT LUNGE [RFL]; CHAIR [C]). RESULTS: SIGNIFICANT GAINS WERE OBSERVED IN THE YG FOR FLEXIBILITY (SR, P = 0.01; SF, P = 0.03), AND BALANCE (SS, P = 0.05). NO SIGNIFICANT DIFFERENCES WERE OBSERVED IN THE NYG FOR FLEXIBILITY AND BALANCE. SIGNIFICANTLY, GREATER JA WERE OBSERVED IN THE YG FOR: RFL (DORSIFLEXION, L-ANKLE; P = 0.04), DD (EXTENSION, R-KNEE, P = 0.04; R-HIP; P = 0.01; FLEXION, R-SHOULDER; P = 0.01) AND C (FLEXION, R-KNEE; P = 0.01). SIGNIFICANT JA DIFFERENCES WERE OBSERVED IN THE NYG FOR: DD (FLEXION, R-KNEE, P = 0.01: R-HIP, P = 0.05; R-SHOULDER, P = 0.03) AND C (FLEXION R-KNEE, P = 0.01; EXTENSION, R-SHOULDER; P = 0.05). A BETWEEN GROUP COMPARISON REVEALED THE SIGNIFICANT DIFFERENCES FOR: RFL (L-ANKLE; P = 0.01), DD (R-KNEE, P = 0.01; R-HIP; P = 0.01), AND C (R-SHOULDER, P = 0.02). CONCLUSIONS: RESULTS SUGGEST THAT A REGULAR YOGA PRACTICE MAY INCREASE THE FLEXIBILITY AND BALANCE AS WELL AS WHOLE BODY MEASURES OF MALE COLLEGE ATHLETES AND THEREFORE, MAY ENHANCE ATHLETIC PERFORMANCES THAT REQUIRE THESE CHARACTERISTICS. 2016 13 2357 32 VARYING ALIGNMENT AFFECTS LOWER EXTREMITY JOINT AND LIMB LOADING DURING YOGA'S TRIANGLE (TRIKONASANA) POSE. BACKGROUND: LIMITED BIOMECHANICAL DATA EXIST DESCRIBING HOW YOGA ASANAS (POSTURES) LOAD THE LIMBS AND JOINTS, AND LITTLE EVIDENCE-BASED RECOMMENDATIONS FOR YOGA INJURY PREVENTION ARE AVAILABLE. THIS STUDY AIMED TO ESTABLISH JOINT LOADING METRICS FOR AN INJURY-PRONE, YET COMMON YOGA POSE, THE TRIANGLE ASANA (TRIKONASANA) BY IDENTIFYING HOW STANCE WIDTH ADJUSTMENTS ALTER LOWER EXTREMITY LOADING. METHODS: EIGHTEEN YOGA PRACTITIONERS UNDERWENT 3D MOTION ANALYSIS WHILE PERFORMING TRIKONASANA WITH SELF-SELECTED (SS) STANCE WIDTH AND -30, -20, -10, +10, +20, AND +30% OF SS STANCE WIDTH. GROUND REACTION FORCES (GRFS), JOINT FORCES, AND JOINT MOMENTS WERE CALCULATED FOR THE LEADING AND TRAILING LIMB ANKLE, KNEE, AND HIP. ONE-WAY REPEATED-MEASURES ANALYSIS OF VARIANCE DETERMINED DIFFERENCES IN LOADING DUE TO STANCE WIDTH. RESULTS: GRFS, NET JOINT FORCES, AND NET JOINT MOMENTS WERE SIGNIFICANTLY AFFECTED BY STANCE WIDTH WHERE INCREASING STANCE WIDTH INCREASED LEADING LIMB LOADING BUT DECREASED TRAILING LIMB LOADING. CONCLUSIONS: ALTERING STANCE WIDTH OF TRIKONASANA INFLUENCES LOWER EXTREMITY LIMB LOADING, AND THESE LOADING RESPONSES WERE LIMB-DEPENDENT. YOGA PRACTITIONERS AND INSTRUCTORS CAN USE THIS INFORMATION TO OBJECTIVELY SUPPORT INCREASING OR DECREASING STANCE WIDTH TO REDUCE OR INCREASE LIMB LOADING ACCORDING TO THEIR GOALS OR TO MAKE ACCOMMODATIONS TO GROUPS SUCH AS BEGINNERS OR AT-RISK POPULATIONS FOR SAFER, MORE ACCESSIBLE YOGA PRACTICES. CUING A WIDER OR NARROWER STANCE WIDTH WILL NOT HAVE THE SAME EFFECT ON BOTH LIMBS. 2022 14 2306 47 TRAINING BENEFITS AND INJURY RISKS OF STANDING YOGA APPLIED IN MUSCULOSKELETAL PROBLEMS: LOWER LIMB BIOMECHANICAL ANALYSIS. STANDING YOGA POSES STRENGTHEN A PERSON'S LEGS AND HELPS TO ACHIEVE THE GOAL OF MUSCULOSKELETAL REHABILITATION, BUT INADEQUATE EXERCISE PLANNING CAN CAUSE INJURIES. THIS STUDY INVESTIGATED CHANGES IN THE ELECTROMYOGRAM AND JOINT MOMENTS OF FORCE (JMOFS) OF LOWER EXTREMITIES DURING COMMON STANDING YOGA POSES IN ORDER TO EXPLORE THE FEASIBILITY AND POSSIBLE INJURY RISK IN DEALING WITH MUSCULOSKELETAL PROBLEMS. ELEVEN YOGA INSTRUCTORS WERE RECRUITED TO EXECUTE FIVE YOGA POSES (CHAIR, TREE, WARRIOR 1, 2, AND 3). THE RESULTS REVEALED SIGNIFICANT DIFFERENCES IN HIP, KNEE, AND ANKLE JMOFS AND VARYING DEGREES OF MUSCLE ACTIVATION AMONG THE POSES. AMONG THESE POSES, RECTUS FEMORIS MUSCLE ACTIVATION DURING THE CHAIR POSE WAS THE HIGHEST, WARRIOR 2 PRODUCED THE HIGHEST MUSCLE ACTIVATION IN THE VASTUS LATERALIS OF THE FRONT LIMB, WHILE WARRIOR 1 HAD THE HIGHEST MUSCLE ACTIVATION IN THE VASTUS MEDIALIS OF THE BACK LIMB. THEREFORE, ALL THREE POSES CAN POSSIBLY BE SUGGESTED AS A THERAPEUTIC INTERVENTION FOR QUADRICEPS STRENGTHENING. WARRIOR 1 WAS POSSIBLY SUGGESTED AS A THERAPEUTIC INTERVENTION IN ORDER TO REDUCE EXCESSIVE LATERAL OVERLOAD OF THE PATELLA, BUT THE POSSIBLE ADVERSE EFFECTS OF WARRIOR 2 WITH THE HIGHEST KNEE ADDUCTOR JMOF IN THE BACK LIMB COULD RAISE JOINT REACTION FORCES ACROSS THE MEDIAL CONDYLES. IN SINGLE-LEG BALANCE POSTURES, WARRIOR 3 HAD UNIQUE TRAINING EFFECTS ON THE HAMSTRING, AND IS THEREFORE SUGGESTED AS A PART OF HAMSTRING REHABILITATION EXERCISES. THE TREE POSE INDUCED LOW LOWER-EXTREMITY JMOFS AND A LOW LEVEL OF THIGH MUSCLE ACTIVATIONS WHEN IT WAS PERFORMED BY SENIOR INSTRUCTORS WITH EXCELLENT BALANCE CONTROL; HOWEVER, FOR YOGA BEGINNERS WITH INSUFFICIENT STABILITY, IT WILL BE A USEFUL TRAINING MODE FOR STRENGTHENING THE MUSCLES THAT HELP TO KEEP ONE UPRIGHT. THIS STUDY QUANTIFIED THE PHYSICAL DEMANDS OF YOGA POSES USING BIOMECHANICAL DATA AND ELUCIDATED THE STRUCTURES AND PRINCIPLES UNDERLYING EACH YOGA MOVEMENT. THIS IS CRUCIAL FOR YOGA PRACTITIONERS. 2021 15 2329 44 TRUNK AND HIP MUSCLE ACTIVATION DURING YOGA POSES: IMPLICATIONS FOR PHYSICAL THERAPY PRACTICE. OBJECTIVE: TO DETERMINE AND COMPARE ACTIVATION OF CORE MUSCLES DURING YOGA TO TRADITIONAL BACK EXERCISES. METHODS: SURFACE ELECTROMYOGRAPHY WAS USED TO QUANTIFY ACTIVATION OF THE RECTUS ABDOMINIS (RA), ABDOMINAL OBLIQUES (AO), LUMBAR EXTENSORS (LE), AND GLUTEUS MAXIMUS (GMX) DURING FOUR YOGA POSES. DATA WERE EXPRESSED AS 100% OF A MAXIMUM VOLUNTARY ISOMETRIC CONTRACTION. SEPARATE ANALYSES OF VARIANCE WITH REPEATED MEASURES WERE USED TO COMPARE MUSCLE ACTIVITY ACROSS EACH EXERCISE. RESULTS: SUBJECTS GENERATED GREATER RA (P < 0.0001) AND AO (P < 0.0001) ACTIVITY DURING THE PLANK. THEY GENERATED GREATER AO ACTIVITY (P < 0.0001) DURING THE UPWARD-FACING DOG THAN THE CHAIR AND DOMINANT-SIDE WARRIOR 1. LE ACTIVITY WAS GREATEST (P < 0.0001) DURING THE CHAIR. GMX ACTIVITY WAS SIMILAR (P = 0.09) DURING ALL EXERCISES. CONCLUSION: YOGA POSES MAY HELP IMPROVE CORE ENDURANCE AND STRENGTH. CLINICIANS MAY USE THESE DATA WHEN DEVELOPING AND IMPLEMENTING AN EVIDENCE-BASED CORE EXERCISE PROGRAM FOR INDIVIDUALS WHO PREFER A YOGA TREATMENT STRATEGY. 2017 16 2064 36 THE BIOMECHANICAL DEMANDS OF STANDING YOGA POSES IN SENIORS: THE YOGA EMPOWERS SENIORS STUDY (YESS). BACKGROUND: THE NUMBER OF OLDER ADULTS PARTICIPATING IN YOGA HAS INCREASED DRAMATICALLY IN RECENT YEARS; YET, THE PHYSICAL DEMANDS ASSOCIATED WITH YOGA PERFORMANCE HAVE NOT BEEN REPORTED. THE PRIMARY AIM OF THE YOGA EMPOWERS SENIORS STUDY (YESS) WAS TO USE BIOMECHANICAL METHODS TO QUANTIFY THE PHYSICAL DEMANDS ASSOCIATED WITH THE PERFORMANCE OF 7 COMMONLY-PRACTICED STANDING YOGA POSES IN OLDER ADULTS. METHODS: 20 AMBULATORY OLDER ADULTS (70.7+-3.8 YRS) ATTENDED 2 WEEKLY 60-MINUTE HATHA YOGA CLASSES FOR 32 WEEKS. THE LOWER-EXTREMITY NET JOINT MOMENTS OF FORCE (JMOFS), WERE OBTAINED DURING THE PERFORMANCE OF THE FOLLOWING POSES: CHAIR, WALL PLANK, TREE, WARRIOR II, SIDE STRETCH, CRESCENT, AND ONE-LEGGED BALANCE. REPEATED-MEASURE ANOVA AND TUKEY'S POST-HOC TESTS WERE USED TO IDENTIFY DIFFERENCES IN JMOFS AMONG THE POSES. ELECTROMYOGRAPHIC ANALYSIS WAS USED TO SUPPORT THE JMOF FINDINGS. RESULTS: THERE WAS A SIGNIFICANT MAIN EFFECT FOR POSE, AT THE ANKLE, KNEE AND HIP, IN THE FRONTAL AND SAGITTAL PLANES (P=0.00-0.03). THE CRESCENT, CHAIR, WARRIOR II, AND ONE-LEGGED BALANCE POSES GENERATED THE GREATEST AVERAGE SUPPORT MOMENTS. SIDE STRETCH GENERATED THE GREATEST AVERAGE HIP EXTENSOR AND KNEE FLEXOR JMOFS. CRESCENT PLACED THE HIGHEST DEMANDS ON THE HIP FLEXORS AND KNEE EXTENSORS. ALL OF THE POSES PRODUCED ANKLE PLANTAR-FLEXOR JMOFS. IN THE FRONTAL PLANE, THE TREE GENERATED THE GREATEST AVERAGE HIP AND KNEE ABDUCTOR JMOFS; WHEREAS WARRIOR II GENERATED THE GREATEST AVERAGE HIP AND KNEE ADDUCTOR JMOFS. WARRIOR II AND ONE-LEGGED BALANCE INDUCED THE LARGEST AVERAGE ANKLE EVERTOR AND INVERTOR JMOFS, RESPECTIVELY. THE ELECTROMYOGRAPHIC FINDINGS WERE CONSISTENT WITH THE JMOF RESULTS. CONCLUSIONS: MUSCULOSKELETAL DEMAND VARIED SIGNIFICANTLY ACROSS THE DIFFERENT POSES. THESE FINDINGS MAY BE USED TO GUIDE THE DESIGN OF EVIDENCE-BASED YOGA INTERVENTIONS THAT ADDRESS INDIVIDUAL-SPECIFIC TRAINING AND REHABILITATION GOALS IN SENIORS. CLINICAL TRIAL REGISTRATION: THIS STUDY IS REGISTERED WITH NIH CLINICALTRIALS.GOV #NCT 01411059. 2013 17 1654 69 MUSCLE UTILIZATION PATTERNS VARY BY SKILL LEVELS OF THE PRACTITIONERS ACROSS SPECIFIC YOGA POSES (ASANAS). OBJECTIVE: TO COMPARE MUSCLE ACTIVATION PATTERNS IN 14 DOMINANT SIDE MUSCLES DURING DIFFERENT YOGA POSES ACROSS THREE SKILL LEVELS. DESIGN: MIXED REPEATED-MEASURES DESCRIPTIVE STUDY. SETTING: UNIVERSITY NEUROMUSCULAR RESEARCH LABORATORY, MIAMI, US. PARTICIPANTS: A GROUP OF 36 YOGA PRACTITIONERS (9 M/27 F; MEAN +/- SD, 31.6 +/- 12.6 YEARS) WITH AT LEAST 3 MONTHS YOGA PRACTICE EXPERIENCE. INTERVENTIONS: EACH OF THE 11 SURYA NAMASKAR POSES A AND B WAS PERFORMED SEPARATELY FOR 15S AND THE SURFACE ELECTROMYOGRAPHY FOR 14 MUSCLES WERE RECORDED. MAIN OUTCOME MEASURES: NORMALIZED ROOT MEAN SQUARE OF THE ELECTROMYOGRAPHIC SIGNAL (NRMSEMG) FOR 14 MUSCLES (5 UPPER BODY, 4 TRUNK, 5 LOWER BODY). RESULTS: THERE WERE SIGNIFICANT MAIN EFFECTS OF POSE FOR ALL FOURTEEN MUSCLES EXCEPT MIDDLE TRAPEZIUS (P<.02) AND OF SKILL LEVEL FOR THE VASTUS MEDIALIS; P=.027). A SIGNIFICANT SKILL LEVEL X POSE INTERACTION EXISTED FOR FIVE MUSCLES (PECTORALIS MAJOR STERNAL HEAD, ANTERIOR DELTOID, MEDIAL DELTOID, UPPER RECTUS ABDOMINIS AND GASTROCNEMIUS LATERALIS; P<.05). POST HOC ANALYSES USING BONFERRONI COMPARISONS INDICATED THAT DIFFERENT POSES ACTIVATED SPECIFIC MUSCLE GROUPS; HOWEVER, THIS VARIED BY SKILL LEVEL. CONCLUSION: OUR RESULTS INDICATE THAT DIFFERENT POSES CAN PRODUCE SPECIFIC MUSCLE ACTIVATION PATTERNS WHICH MAY VARY DUE TO PRACTITIONERS' SKILL LEVELS. THIS INFORMATION CAN BE USED IN DESIGNING REHABILITATION AND TRAINING PROGRAMS AND FOR CUING DURING YOGA TRAINING. 2014 18 1510 21 IS THE "YOGA BOD" THE NEW SKINNY?: A COMPARATIVE CONTENT ANALYSIS OF MAINSTREAM YOGA LIFESTYLE MAGAZINE COVERS. AS YOGA HAS GAINED POPULARITY IN WESTERN CULTURE, CONCERNS HAVE BEEN RAISED ABOUT ITS INCREASED COMMERCIALIZATION AND ASSIMILATION INTO THE PREDOMINANTLY APPEARANCE-FOCUSED EXERCISE AND FITNESS CULTURE. IN THIS CONTEXT, THE PRESENT STUDY EXAMINED THE PHYSICAL APPEARANCE-RELATED CHARACTERISTICS (E.G., RACE/ETHNICITY, BODY SIZE, SHAPE, OBJECTIFYING APPAREL) OF 142 FEMALE MODELS AND THE MEDIA FRAMES OF 567 CAPTIONS (E.G., COMMERCIALISM, BODY COMPETENCE, HEALTH, WEIGHT/PHYSICAL APPEARANCE) FEATURED ON THE COVERS OF THREE WESTERNIZED YOGA LIFESTYLE MAGAZINES PUBLISHED BETWEEN 2010-2015. RESULTS INDICATED THAT MOST MODELS WERE WHITE, EMBODYING THE CONTEMPORARY "THIN-AND-LEAN" MEDIA FITNESS AESTHETIC. MODELS WERE ACTIVELY POSED WITH HIGH BODY VISIBILITY; AN APPRECIABLE MINORITY WAS PARTIALLY-CLAD IN SKIN-REVEALING OR FORM-FITTING UPPER-BODY ATTIRE. MEDIA FRAMES CONVEYING COMMERCIALISM AND BODY COMPETENCE WERE EQUALLY PRESENT. THE PATTERN OF EFFECTS TENDED TO REFLECT THE STRENGTH OF THE MAGAZINE TITLE'S ENDORSEMENT OF EXERCISE AND FITNESS CULTURAL VALUES. CLINICAL AND PUBLIC HEALTH IMPLICATIONS ALONG WITH FUTURE RESEARCH DIRECTIONS ARE DISCUSSED. 2017 19 1948 35 SCAPULAR MUSCLE ACTIVITY DURING STATIC YOGA POSTURES. STUDY DESIGN CONTROLLED, CROSS-SECTIONAL LABORATORY STUDY. BACKGROUND DESPITE THE GROWING POPULARITY OF YOGA, LITTLE IS KNOWN ABOUT THE MUSCLE ACTIVITY OF THE SCAPULAR STABILIZERS DURING ISOMETRIC YOGA POSTURES AND THEIR POTENTIAL UTILITY IN SHOULDER REHABILITATION. OBJECTIVES TO EXAMINE SCAPULAR STABILIZER MUSCLE ACTIVATION DURING VARIOUS YOGA POSTURES. METHODS TWENTY WOMEN WITH YOGA EXPERIENCE AND NO SHOULDER PAIN OR INJURY PARTICIPATED. ELECTROMYOGRAPHY WAS USED TO RECORD THE MUSCLE ACTIVITY OF THE UPPER, MIDDLE, AND LOWER TRAPEZIUS, AS WELL AS OF THE SERRATUS ANTERIOR, DURING 15 YOGA POSTURES. RESULTS MUSCLE ACTIVITY VARIED BETWEEN YOGA POSTURES (3%-57% MAXIMUM VOLUNTARY ISOMETRIC CONTRACTION [MVIC]). OVERALL, THE "LOCUST ARMS FORWARD" POSTURE ELICITED THE HIGHEST ACTIVITY FROM THE UPPER (22.4% MVIC), MIDDLE (41.8% MVIC), AND LOWER (56.8% MVIC) TRAPEZIUS, WHILE SEVERAL POSTURES ELICITED MODERATE ACTIVITY (GREATER THAN 20% MVIC) FROM THE SERRATUS ANTERIOR. CONVERSELY, THE "DANCER'S POSE RIGHT," "REVERSE TABLETOP," AND "WARRIOR II" POSTURES DEMONSTRATED LOW ACTIVITY (LESS THAN OR EQUAL TO 15.7% MVIC) OF THE SCAPULAR STABILIZERS. CONCLUSION STRENGTHENING THE SCAPULAR STABILIZER MUSCLES IS AN IMPORTANT COMPONENT OF SHOULDER REHABILITATION. YOGA POSTURES HAVE BEEN IDENTIFIED THAT ACTIVATE THE SCAPULAR STABILIZER MUSCLES AT VARYING LEVELS OF ACTIVITY. J ORTHOP SPORTS PHYS THER 2018;48(6):504-509. EPUB 6 APR 2018. DOI:10.2519/JOSPT.2018.7311. 2018 20 322 23 ANKLE MOTION IN COMMON YOGA POSES. BACKGROUND: MOTION OF THE ANKLE IS ESSENTIAL FOR MANY YOGA POSES. AN UNDERSTANDING OF RANGE OF ANKLE MOTION DURING TYPICAL YOGA POSES MAY HELP THE CLINICIAN TO UNDERSTAND EXPECTED OUTCOMES OF PATIENTS WHEN RETURNING FROM ANKLE SURGERY OR INJURY TO YOGA. METHODS: THE BIOMECHANICS OF TWENTY HEALTHY ACTIVE YOGIS WERE COLLECTED DURING SEVEN YOGA POSES THAT ARE COMMON WITHIN THEIR PRACTICES. MOTION CAPTURE AND FORCE PLATES WERE USED TO ASSESS THE RANGE OF MOTION AND JOINT MOMENTS OF THE ANKLE FOR EACH POSE. RESULTS: ALL POSES RESULTED IN PLANTARFLEXION AND EXTERNAL ROTATION MOMENTS AT THE ANKLE JOINTS. JOINT LOADING WAS HIGHEST IN SINGLE LEG POSES. THE ARC OF MOTION USED BY THE STUDY PARTICIPANTS IN THE POSES WAS 29 DEGREES OF SAGITTAL MOTION, 20 DEGREES OF FRONTAL MOTION AND 35 DEGREES OF TRANSVERSE MOTION. DISCUSSION: ANKLE MOTION WAS EVALUATED WHEN HEALTHY YOGIS PERFORM STANDARD POSES. THESE RESULTS MAY HELP IN DISCUSSION WITH PATIENTS REGARDING EXPECTED OUTCOMES AFTER ANKLE INJURY OR SURGERY. 2019