1 58 122 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 2 2108 15 THE EFFECT OF YOGA ON PUBORECTALIS PARADOX. NINE PATIENTS WITH SEVERE DEFAECATION DIFFICULTIES PRIMARILY CONSIDERED TO BE DUE TO PUBORECTALIS DYSFUNCTION (PUBORECTALIS PARADOX), VERIFIED BY ELECTROMYOGRAPHY (EMG) OF THE STRIATED ANAL SPHINCTER MUSCLES, WERE OFFERED TRAINING IN YOGIC TECHNIQUES OF RELAXATION AND MUSCLE CONTROL IN ORDER TO CHANGE THE ACTIVITY OF THE PELVIC FLOOR MUSCLES DURING ATTEMPTED DEFAECATION. FIVE PATIENTS COMPLETED THE TRAINING PROGRAM OF 20 2-HOUR SESSIONS AND WERE RE-EXAMINED CLINICALLY AND WITH EMG. ONE PATIENT REGAINED A NORMAL EMG PATTERN BUT NONE OF THE PATIENTS IMPROVED CLINICALLY. 1991 3 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 4 1348 28 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/=18 YEARS OF AGE). METHODS: TWENTY-NINE PARTICIPANTS WERE RANDOMIZED TO TWO GROUPS: VY (N = 16, 55.87 +/- 12.31 YEARS) OR TAIJIFIT (N = 13, 55.07 +/- 12.65 YEARS). MAIN OUTCOME MEASURES: PRIOR TO AND FOLLOWING THE STUDY, ASSESSMENTS WERE MADE FOR MUSCLE STRENGTH (1-RM LEG PRESS, CHEST PRESS, AND HANDGRIP), MUSCLE ENDURANCE (LEG PRESS AND CHEST PRESS; MAXIMAL NUMBER OF REPETITIONS PERFORMED TO FATIGUE AT 80% AND 70% BASELINE 1-RM, RESPECTIVELY), ABDOMINAL ENDURANCE (MAXIMUM NUMBER OF CONSECUTIVE CURL-UPS TO FATIGUE), TASKS OF FUNCTIONALITY (DYNAMIC BALANCE AND WALKING SPEED), AND FLEXIBILITY (SIT AND REACH). RESULTS: THERE WAS A SIGNIFICANT INCREASE OVER TIME FOR MUSCLE STRENGTH, MUSCLE ENDURANCE, TASKS OF FUNCTIONALITY, AND FLEXIBILITY (P = 0.001). THE VY GROUP EXPERIENCED A GREATER IMPROVEMENT IN CHEST PRESS ENDURANCE (VY: PRE 19.25 +/- 5.90, POST 28.06 +/- 7.60 REPS; TAIJIFIT PRE 15.69 +/- 4.49, POST 21.07 +/- 5.85 REPS; P = 0.019) AND ABDOMINAL ENDURANCE (VY: PRE 37.12 +/- 31.26, POST 68.43 +/- 55.07 REPS; TAIJIFIT PRE 19.23 +/- 19.00, POST 32.07 +/- 20.87 REPS; P = 0.034) COMPARED TO THE TAIJIFIT GROUP. CONCLUSIONS: VY AND TAIJIFIT ARE EFFECTIVE FOR IMPROVING MUSCLE STRENGTH AND ENDURANCE, TASKS OF FUNCTIONALITY, AND FLEXIBILITY IN INFORMAL CAREGIVERS. VY LED TO GREATER GAINS IN CHEST PRESS ENDURANCE AND ABDOMINAL CURL-UPS. 2019 14 1360 25 IMMEDIATE EFFECTS OF YOGA BREATHING WITH INTERMITTENT BREATH HOLDING ON RESPONSE INHIBITION AMONG HEALTHY VOLUNTEERS. BACKGROUND: THERE IS VERY LITTLE EVIDENCE AVAILABLE ON THE EFFECTS OF YOGA-BASED BREATHING PRACTICES ON RESPONSE INHIBITION. THE CURRENT STUDY USED STOP-SIGNAL PARADIGM TO ASSESS THE EFFECTS OF YOGA BREATHING WITH INTERMITTENT BREATH HOLDING (YBH) ON RESPONSE INHIBITION AMONG HEALTHY VOLUNTEERS. MATERIALS AND METHODS: THIRTY-SIX HEALTHY VOLUNTEERS (17 MALES + 19 FEMALES), WITH MEAN AGE OF 20.31 +/- 3.48 YEARS FROM A UNIVERSITY, WERE RECRUITED IN A WITHIN-SUBJECT REPEATED MEASURES (RM) DESIGN. THE RECORDINGS FOR STOP SIGNAL TASK WERE PERFORMED ON THREE DIFFERENT DAYS FOR BASELINE, POST-YBH, AND POST YOGIC BREATH AWARENESS (YBA) SESSIONS. STOP-SIGNAL REACTION TIME (SSRT), MEAN REACTION TIME TO GO STIMULI (GO RT), AND THE PROBABILITY OF RESPONDING ON-STOP SIGNAL TRIALS (P [R/S]) WERE ANALYZED FOR 36 VOLUNTEERS USING RM ANALYSIS OF VARIANCE. RESULTS: SSRT REDUCED SIGNIFICANTLY IN BOTH YBH (218.33 +/- 38.38) AND YBA (213.15 +/- 37.29) GROUPS WHEN COMPARED TO BASELINE (231.98 +/- 29.54). NO SIGNIFICANT CHANGES WERE OBSERVED IN GO RT AND P (R/S). FURTHER, THE CHANGES IN SSRT WERE NOT SIGNIFICANTLY DIFFERENT AMONG YBH AND YBA GROUPS. CONCLUSION: BOTH YBH AND YBA GROUPS WERE FOUND TO ENHANCE RESPONSE INHIBITION IN THE STOP-SIGNAL PARADIGM. YBH COULD BE FURTHER EVALUATED IN CLINICAL SETTINGS FOR CONDITIONS WHERE RESPONSE INHIBITION IS ALTERED. 2018 15 42 11 A CASE OF RECTUS SHEATH HEMATOMA CAUSED BY YOGA EXERCISE. RECTUS SHEATH HEMATOMA IS A RELATIVELY RARE CONDITION BUT A SIGNIFICANT CAUSE OF ACUTE ABDOMINAL PAIN. THE ACUTE ABDOMINAL PAIN ASSOCIATED WITH RECTUS SHEATH HEMATOMA CAN MIMIC SEVERAL CONDITIONS, SUCH AS APPENDICITIS, INTESTINAL PROBLEMS (OBSTRUCTION, PERFORATION, HERNIA, MALIGNANCY), AND GYNECOLOGIC DISEASE (OVARIAN CYST, TORSION, TUBO-OVARIAN ABSCESS, ECTOPIC PREGNANCY). CORRECT DIAGNOSIS AND SUBSEQUENT TREATMENT DEPENDS ON CAREFUL HISTORY TAKING AND APPROPRIATE USE OF DIAGNOSTIC TOOLS TO AVOID UNNECESSARY LAPAROTOMY. WE REPORT A CASE OF RECTUS SHEATH HEMATOMA DUE TO NONCONTACT STRENUOUS EXERCISE, YOGA, THAT MIMICKED GYNECOLOGIC DISEASES. 2009 16 1358 22 IMMEDIATE EFFECT OF YOGA EXERCISES FOR EYES ON THE MACULAR THICKNESS. BACKGROUND: YOGA EXERCISES FOR EYES HAVE BEEN ADVOCATED AS BENEFICIAL TO EYE HEALTH. IN A PREVIOUS STUDY, WE EVALUATED THE EFFECT OF YOGA EXERCISES FOR EYES ON THE INTRAOCULAR PRESSURE (IOP). THE OTHER ASPECTS OF THE EFFECTS OF YOGA EXERCISES FOR EYES TO OCULAR STRUCTURE HAVE NOT BEEN INVESTIGATED YET. AIM: THE AIM OF THIS STUDY IS TO EVALUATE THE EFFECT OF YOGA EXERCISES FOR EYES ON THE MACULAR STRUCTURE USING THE OPTICAL COHERENCE TOMOGRAPHY (OCT) AND OCT ANGIOGRAPHY (OCTA) PARAMETERS. METHODS: TWENTY-NINE PARTICIPANTS WERE INCLUDED IN THIS MASKED WITHIN PARTICIPANT COMPARISON OF HEALTHY CONTROLS. BASIC OPHTHALMIC EXAMINATION WAS PERFORMED, AFTER WHICH PATIENTS WERE EVALUATED FOR IOP, OCT, AND OCTA BEFORE AND AFTER YOGA EXERCISES FOR EYES. OCT/A PARAMETERS THAT WERE EVALUATED WERE: AVERAGE MACULAR THICKNESS (AMT) (MUM), CENTRAL MACULAR THICKNESS (MUM), CENTRAL CHOROIDAL THICKNESS (MUM) VESSEL DENSITY (%) IN THE SUPERFICIAL, DEEP VASCULAR LAYERS, AND IN THE CHORIOCAPILLARIS. RESULTS: IOP WAS SIGNIFICANTLY REDUCED (POSTEXERCISE IOP = 13.02 MMHG +/- 2.82 MMHG) FROM THE INITIAL VALUE (PREEXERCISE IOP = 13.86 MMHG +/- 2.85 MMHG, P = 0.02). AMT SIGNIFICANTLY INCREASED (POSTEXERCISE AMT = 275.40 MUM +/- 10.85 MUM) FROM THE PREEXERCISE MEASUREMENT (PREEXERCISE AMT = 274.41 MUM +/- 10.89 MUM; P = 0.02). CONCLUSION: AFTER YOGA OCULAR EXERCISES, IOP SIGNIFICANTLY DECREASED AND AMT SIGNIFICANTLY INCREASED IN HEALTHY CONTROLS, SUGGESTING AN EFFECT OF THESE EXERCISES ON THE MACULAR THICKNESS. 2020 17 275 21 ADDITIONAL EFFECT OF IYENGAR YOGA AND EMG BIOFEEDBACK ON PAIN AND FUNCTIONAL DISABILITY IN CHRONIC UNILATERAL KNEE OSTEOARTHRITIS. BACKGROUND: THERE ARE LIMITED DATA ABOUT IYENGAR YOGA AND EMG BIOFEEDBACK IN KNEE OA, ALTHOUGH THE EFFICACY OF EMG BIOFEEDBACK IN THE REHABILITATION OF PATIENTS WITH QUADRICEPS MUSCLE WEAKNESS SECONDARY TO IMMOBILIZATION, CONTRACTURE, AND JOINT SURGERY HAS BEEN WELL ESTABLISHED. MATERIALS AND METHODS: THIRTY SUBJECTS WHO HAVE FULFILLED INCLUSION AND EXCLUSION CRITERIA WERE SELECTED AND DIVIDED INTO TWO GROUPS (GROUP A AND B). BOTH THE GROUPS WERE TREATED WITH EMG BIOFEEDBACK, KNEE MUSCLE STRENGTHENING EXERCISES, AND TENS. GROUP A RECEIVED ADDITIONALLY IYENGAR YOGA FOR 8 WEEKS. BOTH GROUPS WERE EVALUATED BY VISUAL ANALOG SCALE AND MODIFIED WOMAC-WESTERN ONTARIO MCMASTER UNIVERSITIES SCALE. RESULTS: PATIENTS IN BOTH GROUPS EXPERIENCED SIGNIFICANT REDUCTION IN PAIN AND IMPROVEMENT IN FUNCTIONAL ABILITY. IN VAS SCALE GROUP A SHOWED REDUCTION OF 56.83% (P = 0.001) WHEN COMPARED WITH GROUP B 38.15% (P