1  461 141 CHANGES IN PERCEIVED STRESS AFTER YOGA, PHYSICAL THERAPY, AND EDUCATION INTERVENTIONS FOR CHRONIC LOW BACK PAIN: A SECONDARY ANALYSIS OF A RANDOMIZED CONTROLLED TRIAL. OBJECTIVE: PERCEIVED STRESS AND MUSCULOSKELETAL PAIN ARE COMMON, ESPECIALLY IN LOW-INCOME POPULATIONS. STUDIES EVALUATING TREATMENTS TO REDUCE STRESS IN PATIENTS WITH CHRONIC PAIN ARE LACKING. WE AIMED TO QUANTIFY THE EFFECT OF TWO EVIDENCE-BASED INTERVENTIONS FOR CHRONIC LOW BACK PAIN (CLBP), YOGA AND PHYSICAL THERAPY (PT), ON PERCEIVED STRESS IN ADULTS WITH CLBP. METHODS: WE USED DATA FROM AN ASSESSOR-BLINDED, PARALLEL-GROUP RANDOMIZED CONTROLLED TRIAL, WHICH RECRUITED PREDOMINANTLY LOW-INCOME AND RACIALLY DIVERSE ADULTS WITH CLBP. PARTICIPANTS (N = 320) WERE RANDOMLY ASSIGNED TO 12 WEEKS OF YOGA, PT, OR BACK PAIN EDUCATION. WE COMPARED CHANGES IN THE 10-ITEM PERCEIVED STRESS SCALE (PSS-10) FROM BASELINE TO 12- AND 52-WEEK FOLLOW-UP AMONG YOGA AND PT PARTICIPANTS WITH THOSE RECEIVING EDUCATION. SUBANALYSES WERE CONDUCTED FOR PARTICIPANTS WITH ELEVATED PRE-INTERVENTION PERCEIVED STRESS (PSS-10 SCORE >/=17). WE CONDUCTED SENSITIVITY ANALYSES USING VARIOUS IMPUTATION METHODS TO ACCOUNT FOR POTENTIAL BIASES IN OUR ESTIMATES DUE TO MISSING DATA. RESULTS: AMONG 248 PARTICIPANTS (MEAN AGE = 46.4 YEARS, 80% NONWHITE) COMPLETING ALL THREE SURVEYS, YOGA AND PT SHOWED GREATER REDUCTIONS IN PSS-10 SCORES COMPARED WITH EDUCATION AT 12 WEEKS (MEAN BETWEEN-GROUP DIFFERENCE = -2.6, 95% CONFIDENCE INTERVAL [CI] = -4.5 TO -0.66, AND MEAN BETWEEN-GROUP DIFFERENCE = -2.4, 95% CI = -4.4 TO -0.48, RESPECTIVELY). THIS EFFECT WAS STRONGER AMONG PARTICIPANTS WITH ELEVATED PRE-INTERVENTION PERCEIVED STRESS. BETWEEN-GROUP EFFECTS HAD ATTENUATED BY 52 WEEKS. RESULTS WERE SIMILAR IN SENSITIVITY ANALYSES. CONCLUSIONS: YOGA AND PT WERE MORE EFFECTIVE THAN BACK PAIN EDUCATION FOR REDUCING PERCEIVED STRESS AMONG LOW-INCOME ADULTS WITH CLBP.	2020	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
2 2851  67 YOGA, PHYSICAL THERAPY, AND BACK PAIN EDUCATION FOR SLEEP QUALITY IN LOW-INCOME RACIALLY DIVERSE ADULTS WITH CHRONIC LOW BACK PAIN: A SECONDARY ANALYSIS OF A RANDOMIZED CONTROLLED TRIAL. BACKGROUND: POOR SLEEP IS COMMON AMONG ADULTS WITH CHRONIC LOW BACK PAIN (CLBP), BUT THE INFLUENCE OF CLBP TREATMENTS, SUCH AS YOGA AND PHYSICAL THERAPY (PT), ON SLEEP QUALITY IS UNDER STUDIED. OBJECTIVE: EVALUATE THE EFFECTIVENESS OF YOGA AND PT FOR IMPROVING SLEEP QUALITY IN ADULTS WITH CLBP. DESIGN: SECONDARY ANALYSIS OF A RANDOMIZED CONTROLLED TRIAL. SETTING: ACADEMIC SAFETY-NET HOSPITAL AND 7 AFFILIATED COMMUNITY HEALTH CENTERS. PARTICIPANTS: A TOTAL OF 320 ADULTS WITH CLBP. INTERVENTION: TWELVE WEEKLY YOGA CLASSES, 1-ON-1 PT SESSIONS, OR AN EDUCATIONAL BOOK. MAIN MEASURES: SLEEP QUALITY WAS MEASURED USING THE PITTSBURGH SLEEP QUALITY INDEX (PSQI) GLOBAL SCORE (0-21) AT BASELINE, 12 WEEKS, AND 52 WEEKS. ADDITIONALLY, WE ALSO EVALUATED HOW THE PROPORTION OF PARTICIPANTS WHO ACHIEVED A CLINICALLY MEANINGFUL IMPROVEMENT IN SLEEP QUALITY (> 3-POINT REDUCTION IN PSQI) AT 12 WEEKS VARIED BY CHANGES IN PAIN AND PHYSICAL FUNCTION AT 6 WEEKS. KEY RESULTS: AMONG PARTICIPANTS (MEAN AGE = 46.0, 64% FEMALE, 82% NON-WHITE), NEARLY ALL (92%) REPORTED POOR SLEEP QUALITY (PSQI > 5) AT BASELINE. AT 12 WEEKS, MODEST IMPROVEMENTS IN SLEEP QUALITY WERE OBSERVED AMONG THE YOGA (PSQI MEAN DIFFERENCE [MD] = - 1.19, 95% CONFIDENCE INTERVAL [CI] - 1.82, - 0.55) AND PT (PSQI MD = - 0.91, 95% CI - 1.61, - 0.20) GROUPS. PARTICIPANTS WHO REPORTED A >/= 30% IMPROVEMENT IN PAIN OR PHYSICAL FUNCTION AT 6 WEEKS, COMPARED WITH THOSE WHO IMPROVED < 10%, WERE MORE LIKELY TO BE A SLEEP QUALITY RESPONDER AT 12 WEEKS (ODDS RATIO [OR] = 3.51, 95% CI 1.73, 7.11 AND OR = 2.16, 95% CI 1.18, 3.95, RESPECTIVELY). RESULTS WERE SIMILAR AT 52 WEEKS. CONCLUSION: IN A SAMPLE OF ADULTS WITH CLBP, VIRTUALLY ALL WITH POOR SLEEP QUALITY PRIOR TO INTERVENTION, MODEST BUT STATISTICALLY SIGNIFICANT IMPROVEMENTS IN SLEEP QUALITY WERE OBSERVED WITH BOTH YOGA AND PT. IRRESPECTIVE OF TREATMENT, CLINICALLY IMPORTANT SLEEP IMPROVEMENTS AT THE END OF THE INTERVENTION WERE ASSOCIATED WITH MID-INTERVENTION PAIN AND PHYSICAL FUNCTION IMPROVEMENTS. TRIAL REGISTRATION: CLINICALTRIALS.GOV IDENTIFIER: NCT01343927.	2020	
                                                                                                                                                                                                                                                                                                                                                                                                                
3  465  47 CHARACTERISTICS AND PREDICTORS OF SHORT-TERM OUTCOMES IN INDIVIDUALS SELF-SELECTING YOGA OR PHYSICAL THERAPY FOR TREATMENT OF CHRONIC LOW BACK PAIN. OBJECTIVE: TO COMPARE CLINICAL AND DEMOGRAPHIC CHARACTERISTICS OF INDIVIDUALS SELF-SELECTING YOGA OR PHYSICAL THERAPY (PT) FOR TREATMENT OF CHRONIC LOW BACK PAIN (CLBP) AND TO EXAMINE PREDICTORS OF SHORT-TERM PAIN AND FUNCTIONAL OUTCOMES. DESIGN: DESCRIPTIVE, LONGITUDINAL STUDY. SETTINGS: A HOSPITAL-BASED CLINIC THAT OFFERS MODIFIED INTEGRAL YOGA CLASSES FOR CLBP AND 2 OUTPATIENT PT CLINICS THAT OFFER EXERCISE-BASED PT. PARTICIPANTS: ADULTS (N=53) WITH CLBP>/=12 WEEKS: YOGA (N=27), PT (N=26). METHODS: YOGA PARTICIPANTS ATTENDED A 6-WEEK, ONCE WEEKLY, 2-HOUR YOGA CLASS. PT PARTICIPANTS UNDERWENT TWICE WEEKLY, 1-HOUR INDIVIDUALIZED PT. DATA WERE COLLECTED AT BASELINE AND AT 6 WEEKS. GROUPS WERE COMPARED BY USING CHI2 AND INDEPENDENT SAMPLES T-TESTS. HIERARCHICAL LINEAR REGRESSION WAS USED TO PREDICT TREATMENT OUTCOMES. MAIN OUTCOME MEASURES: DISABILITY (ROLAND MORRIS DISABILITY QUESTIONNAIRE), HEALTH STATUS (RAND SHORT FORM 36 HEALTH SURVEY 1.0), PAIN BOTHERSOMENESS (NUMERICAL RATING SCALE), BACK PAIN SELF-EFFICACY (BACK PAIN SELF-EFFICACY SCALE), AND TREATMENT SATISFACTION. RESULTS: AT BASELINE, YOGA PARTICIPANTS WERE SIGNIFICANTLY LESS DISABLED (P=.013), HAD HIGHER HEALTH STATUS (P=.023), GREATER PAIN SELF-EFFICACY (P=.012), AND LESS AVERAGE PAIN BOTHERSOMENESS (P=.001) COMPARED WITH PT PARTICIPANTS. AT 6 WEEKS, WHEN CONTROLLING FOR BASELINE GROUP DIFFERENCES, GREATER PAIN SELF-EFFICACY WAS THE STRONGEST PREDICTOR FOR REDUCED PAIN AND HIGHER FUNCTION FOR THE ENTIRE SAMPLE. A SIGNIFICANT GROUP INTERACTION BY BASELINE PAIN SELF-EFFICACY PREDICTED DISABILITY AT 6 WEEKS. PT PARTICIPANTS WITH LOW PAIN SELF-EFFICACY REPORTED SIGNIFICANTLY GREATER DISABILITY THAN THOSE WITH HIGH PAIN SELF-EFFICACY. YOGA PARTICIPANTS WITH LOW AND HIGH PAIN SELF-EFFICACY HAD SIMILAR DISABILITY OUTCOMES. CONCLUSION: THESE FINDINGS STRENGTHEN EVIDENCE THAT SELF-EFFICACY IS ASSOCIATED WITH CLBP OUTCOMES, ESPECIALLY IN INDIVIDUALS SELF-SELECTING PT. FURTHER RESEARCH TO EVALUATE OUTCOMES AFTER YOGA AND PT IN PARTICIPANTS WITH LOW PAIN SELF-EFFICACY IS NEEDED.	2010	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
4  430  67 CAN YOGA OR PHYSICAL THERAPY FOR CHRONIC LOW BACK PAIN IMPROVE DEPRESSION AND ANXIETY AMONG ADULTS FROM A RACIALLY DIVERSE, LOW-INCOME COMMUNITY? A SECONDARY ANALYSIS OF A RANDOMIZED CONTROLLED TRIAL. OBJECTIVE: TO DETERMINE AND COMPARE THE EFFECT OF YOGA, PHYSICAL THERAPY (PT), AND EDUCATION ON DEPRESSIVE AND ANXIOUS SYMPTOMS IN PATIENTS WITH CHRONIC LOW BACK PAIN (CLBP). DESIGN: SECONDARY ANALYSIS OF A RANDOMIZED CONTROLLED TRIAL. SETTING: ACADEMIC SAFETY NET HOSPITAL AND 7 COMMUNITY HEALTH CENTERS. PARTICIPANTS: A TOTAL OF 320 ADULTS WITH CLBP. INTERVENTION: YOGA CLASSES, PT SESSIONS, OR AN EDUCATIONAL BOOK. OUTCOME MEASURE: DEPRESSION AND ANXIETY WERE MEASURED USING THE PATIENT HEALTH QUESTIONNAIRE AND GENERALIZED ANXIETY DISORDER 7-ITEM SCALE, RESPECTIVELY, AT BASELINE, 12, AND 52 WEEKS. WE IDENTIFIED BASELINE AND MIDTREATMENT (6-WK) FACTORS ASSOCIATED WITH CLINICALLY MEANINGFUL IMPROVEMENTS IN DEPRESSIVE (>/=3 POINTS) OR ANXIOUS (>/=2 POINTS) SYMPTOMS AT 12 WEEKS. RESULTS: PARTICIPANTS (FEMALE=64%; MEAN AGE, 46.0+/-10.7 YEARS) WERE PREDOMINANTLY NON-WHITE (82%), LOW-INCOME (<$30,000/YEAR, 59%), AND HAD NOT RECEIVED A COLLEGE DEGREE (71%). MOST PARTICIPANTS HAD MILD OR WORSE DEPRESSIVE (60%) AND ANXIOUS (50%) SYMPTOMS. AT 12 WEEKS, YOGA AND PT PARTICIPANTS EXPERIENCED MODEST WITHIN-GROUP IMPROVEMENTS IN DEPRESSIVE SYMPTOMS (MEAN DIFFERENCE [MD]=-1.23 [95% CI, -2.18 TO -0.28]; MD=-1.01 [95% CI, -2.05 TO -0.03], RESPECTIVELY). COMPARED WITH THE EDUCATION GROUP, 12-WEEK DIFFERENCES WERE NOT STATISTICALLY SIGNIFICANT, ALTHOUGH TRENDS FAVORED YOGA (MD=-0.71 [95% CI, -2.22 TO 0.81]) AND PT (MD= -0.32 [95% CI, -1.82 TO 1.18]). AT 12 WEEKS, IMPROVEMENTS IN ANXIOUS SYMPTOMS WERE ONLY FOUND IN PARTICIPANTS WHO HAD MILD OR MODERATE ANXIETY AT BASELINE. INDEPENDENT OF TREATMENT ARM, PARTICIPANTS WHO HAD 30% OR GREATER IMPROVEMENT IN PAIN OR FUNCTION MIDTREATMENT WERE MORE LIKELY TO HAVE A CLINICALLY MEANINGFUL IMPROVEMENT IN DEPRESSIVE SYMPTOMS (ODDS RATIO [OR], 1.82 [95% CI, 1.03-3.22]; OR, 1.79 [95% CI, 1.06-3.04], RESPECTIVELY). CONCLUSIONS: IN OUR SECONDARY ANALYSIS WE FOUND THAT DEPRESSION AND ANXIETY, COMMON IN THIS SAMPLE OF UNDERSERVED ADULTS WITH CLBP, MAY IMPROVE MODESTLY WITH PT AND YOGA. HOWEVER, EFFECTS WERE NOT SUPERIOR TO EDUCATION. IMPROVEMENTS IN PAIN AND FUNCTION ARE ASSOCIATED WITH A DECREASE IN DEPRESSIVE SYMPTOMS. MORE RESEARCH IS NEEDED TO OPTIMIZE THE INTEGRATION OF PHYSICAL AND PSYCHOLOGICAL WELL-BEING IN PT AND YOGA.	2021	
                                                                                                                                                                                                 
5  193  45 A RANDOMIZED TRIAL COMPARING YOGA, STRETCHING, AND A SELF-CARE BOOK FOR CHRONIC LOW BACK PAIN. BACKGROUND: CHRONIC LOW BACK PAIN IS A COMMON PROBLEM LACKING HIGHLY EFFECTIVE TREATMENT OPTIONS. SMALL TRIALS SUGGEST THAT YOGA MAY HAVE BENEFITS FOR THIS CONDITION. THIS TRIAL WAS DESIGNED TO DETERMINE WHETHER YOGA IS MORE EFFECTIVE THAN CONVENTIONAL STRETCHING EXERCISES OR A SELF-CARE BOOK FOR PRIMARY CARE PATIENTS WITH CHRONIC LOW BACK PAIN. METHODS: A TOTAL OF 228 ADULTS WITH CHRONIC LOW BACK PAIN WERE RANDOMIZED TO 12 WEEKLY CLASSES OF YOGA (92 PATIENTS) OR CONVENTIONAL STRETCHING EXERCISES (91 PATIENTS) OR A SELF-CARE BOOK (45 PATIENTS). BACK-RELATED FUNCTIONAL STATUS (MODIFIED ROLAND DISABILITY QUESTIONNAIRE, A 23-POINT SCALE) AND BOTHERSOMENESS OF PAIN (AN 11-POINT NUMERICAL SCALE) AT 12 WEEKS WERE THE PRIMARY OUTCOMES. OUTCOMES WERE ASSESSED AT BASELINE, 6, 12, AND 26 WEEKS BY INTERVIEWERS UNAWARE OF TREATMENT GROUP. RESULTS: AFTER ADJUSTMENT FOR BASELINE VALUES, 12-WEEK OUTCOMES FOR THE YOGA GROUP WERE SUPERIOR TO THOSE FOR THE SELF-CARE GROUP (MEAN DIFFERENCE FOR FUNCTION, -2.5 [95% CI, -3.7 TO -1.3]; P < .001; MEAN DIFFERENCE FOR SYMPTOMS, -1.1 [95% CI, -1.7 TO -0.4]; P < .001). AT 26 WEEKS, FUNCTION FOR THE YOGA GROUP REMAINED SUPERIOR (MEAN DIFFERENCE, -1.8 [95% CI, -3.1 TO -0.5]; P < .001). YOGA WAS NOT SUPERIOR TO CONVENTIONAL STRETCHING EXERCISES AT ANY TIME POINT. CONCLUSION: YOGA CLASSES WERE MORE EFFECTIVE THAN A SELF-CARE BOOK, BUT NOT MORE EFFECTIVE THAN STRETCHING CLASSES, IN IMPROVING FUNCTION AND REDUCING SYMPTOMS DUE TO CHRONIC LOW BACK PAIN, WITH BENEFITS LASTING AT LEAST SEVERAL MONTHS. TRIAL REGISTRATION: CLINICALTRIALS.GOV IDENTIFIER: NCT00447668.	2011	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
6  460  73 CHANGES IN PAIN SELF-EFFICACY, COPING SKILLS, AND FEAR-AVOIDANCE BELIEFS IN A RANDOMIZED CONTROLLED TRIAL OF YOGA, PHYSICAL THERAPY, AND EDUCATION FOR CHRONIC LOW BACK PAIN. OBJECTIVE: WE EVALUATED EXERCISE INTERVENTIONS FOR COGNITIVE APPRAISAL OF CHRONIC LOW BACK PAIN (CLBP) IN AN UNDERSERVED POPULATION. METHODS: WE CONDUCTED A SECONDARY ANALYSIS OF THE BACK TO HEALTH TRIAL, SHOWING YOGA TO BE NONINFERIOR TO PHYSICAL THERAPY (PT) FOR PAIN AND FUNCTION OUTCOMES AMONG ADULTS WITH CLBP (N = 320) RECRUITED FROM PRIMARY CARE CLINICS WITH PREDOMINANTLY LOW-INCOME PATIENTS. PARTICIPANTS WERE RANDOMIZED TO 12 WEEKS OF YOGA, PT, OR EDUCATION. COGNITIVE APPRAISAL WAS ASSESSED WITH THE PAIN SELF-EFFICACY QUESTIONNAIRE (PSEQ), COPING STRATEGIES QUESTIONNAIRE (CSQ), AND FEAR-AVOIDANCE BELIEFS QUESTIONNAIRE (FABQ). USING MULTIPLE IMPUTATION AND LINEAR REGRESSION, WE ESTIMATED WITHIN- AND BETWEEN-GROUP CHANGES IN COGNITIVE APPRAISAL AT 12 AND 52 WEEKS, WITH BASELINE AND THE EDUCATION GROUP AS REFERENCES. RESULTS: PARTICIPANTS (MEAN AGE = 46 YEARS) WERE MAJORITY FEMALE (64%) AND MAJORITY BLACK (57%), AND 54% HAD AN ANNUAL HOUSEHOLD INCOME <$30,000. ALL THREE GROUPS SHOWED IMPROVEMENTS IN PSEQ (RANGE 0-60) AT 12 WEEKS (YOGA, MEAN DIFFERENCE [MD] = 7.0, 95% CONFIDENCE INTERVAL [CI]: 4.9, 9.0; PT, MD = 6.9, 95% CI: 4.7 TO 9.1; AND EDUCATION, MD = 3.4, 95% CI: 0.54 TO 6.3), WITH YOGA AND PT IMPROVEMENTS BEING CLINICALLY MEANINGFUL. AT 12 WEEKS, IMPROVEMENTS IN CATASTROPHIZING (CSQ, RANGE 0-36) WERE LARGEST IN THE YOGA AND PT GROUPS (MD = -3.0, 95% CI: -4.4 TO -1.6; MD = -2.7, 95% CI: -4.2 TO -1.2, RESPECTIVELY). CHANGES IN FABQ WERE SMALL. NO STATISTICALLY SIGNIFICANT BETWEEN-GROUP DIFFERENCES WERE OBSERVED ON PSEQ, CSQ, OR FABQ AT EITHER TIME POINT. MANY OF THE CHANGES OBSERVED AT 12 WEEKS WERE SUSTAINED AT 52 WEEKS. CONCLUSION: ALL THREE INTERVENTIONS WERE ASSOCIATED WITH IMPROVEMENTS IN SELF-EFFICACY AND CATASTROPHIZING AMONG LOW-INCOME, RACIALLY DIVERSE ADULTS WITH CLBP. TRIAL REGISTRATION: CLINICALTRIALS.GOV IDENTIFIER NCT01343927.	2022	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
7 1787  53 PREFERENCE AND EXPECTATION FOR TREATMENT ASSIGNMENT IN A RANDOMIZED CONTROLLED TRIAL OF ONCE- VS TWICE-WEEKLY YOGA FOR CHRONIC LOW BACK PAIN. BACKGROUND: IN STUDIES INVOLVING NONPHARMACOLOGICAL COMPLEMENTARY AND ALTERNATIVE MEDICINE INTERVENTIONS, PARTICIPANT BLINDING IS VERY DIFFICULT. PARTICIPANT EXPECTATIONS MAY AFFECT PERCEIVED BENEFIT OF THERAPY. IN STUDIES OF YOGA AS TREATMENT FOR CHRONIC LOW BACK PAIN, LITTLE IS KNOWN ABOUT THE RELATIONSHIP BETWEEN PATIENT EXPECTATIONS AND PREFERENCES ON OUTCOMES. THIS STUDY WAS DESIGNED TO IDENTIFY BASELINE PREDICTORS OF PREFERENCE AND TO DETERMINE IF EXPECTATIONS AND PREFERENCES FOR DIFFERENT DOSES OF YOGA AFFECT BACK-RELATED FUNCTION AND LOW BACK PAIN INTENSITY. METHODS: THIS WAS A SECONDARY DATA ANALYSIS OF A 12-WEEK RANDOMIZED CONTROLLED TRIAL COMPARING ONCE-WEEKLY VS TWICE-WEEKLY YOGA FOR TREATMENT OF CHRONIC LOW BACK PAIN IN 93 ADULTS FROM A PREDOMINANTLY LOW-INCOME MINORITY POPULATION. AT BASELINE, PARTICIPANTS WERE ASKED ABOUT BACK FUNCTION, BACK PAIN, TREATMENT EXPECTATIONS, AND TREATMENT PREFERENCES. WE CREATED A VARIABLE "CONCORDANCE" TO DESCRIBE THE MATCHING OF PARTICIPANT PREFERENCE TO RANDOMIZED TREATMENT. OUR OUTCOME VARIABLES WERE CHANGE IN BACK FUNCTION AND PAIN INTENSITY AFTER 12 WEEKS OF YOGA INSTRUCTION. WE PERFORMED LOGISTIC REGRESSION TO IDENTIFY PREDICTORS OF PREFERENCE FOR ONCE- OR TWICE-WEEKLY YOGA INSTRUCTION. WE CREATED LINEAR REGRESSION MODELS TO IDENTIFY INDEPENDENT ASSOCIATIONS BETWEEN EXPECTATIONS, PREFERENCE, CONCORDANCE, AND OUTCOMES. RESULTS: WORSE BACK FUNCTION AT BASELINE WAS ASSOCIATED WITH 20% HIGHER ODDS OF PREFERRING TWICE-WEEKLY YOGA (OR 1.2, CI 1.1, 1.3). INDIVIDUALS WITH HIGHER EXPECTATION SCORES FOR TWICE-WEEKLY YOGA HAD 90% HIGHER ODDS OF PREFERRING TWICE-WEEKLY VS ONCE-WEEKLY YOGA (OR 1.9, CI 1.3, 2.7). INDIVIDUALS WITH HIGHER EXPECTATION SCORES FOR ONCE-WEEKLY YOGA HAD 40% LESS ODDS OF PREFERRING TWICE-WEEKLY YOGA (OR 0.6, CI 0.5, 0.9). AFTER CONTROLLING FOR BASELINE CHARACTERISTICS, WE FOUND NO STATISTICALLY SIGNIFICANT RELATIONSHIP BETWEEN TREATMENT OUTCOMES, PREFERENCE, EXPECTATION SCORES, OR CONCORDANCE. CONCLUSION: IN A POPULATION OF PREDOMINANTLY LOW-INCOME MINORITY PARTICIPANTS WITH CHRONIC LOW BACK PAIN, WORSE BACK FUNCTION WAS ASSOCIATED WITH PREFERENCE FOR MORE FREQUENT YOGA CLASSES. THOSE WHO PREFERRED MORE YOGA CLASSES HAD HIGHER EXPECTATIONS FOR THOSE CLASSES. TWELVE-WEEK CHANGE IN BACK PAIN INTENSITY AND BACK FUNCTION WERE NOT AFFECTED BY DOSING PREFERENCE, EXPECTATION SCORE, OR CONCORDANCE. MORE RESEARCH IS NEEDED TO BETTER MEASURE AND QUANTIFY PREFERENCE, EXPECTATIONS, AND THEIR RELATIONSHIP TO OUTCOMES IN YOGA RESEARCH.	2015	

8 1699  51 PARTICIPANT CHARACTERISTICS ASSOCIATED WITH SYMPTOMATIC IMPROVEMENT FROM YOGA FOR CHRONIC LOW BACK PAIN. CONTEXT: STUDIES SUGGEST THAT YOGA IS EFFECTIVE FOR MODERATE TO SEVERE CHRONIC LOW BACK PAIN (CLBP) IN DIVERSE PREDOMINANTLY LOWER SOCIOECONOMIC STATUS POPULATIONS. HOWEVER, LITTLE IS KNOWN ABOUT FACTORS ASSOCIATED WITH BENEFIT FROM THE YOGA INTERVENTION. OBJECTIVE: IDENTIFY FACTORS AT BASELINE INDEPENDENTLY ASSOCIATED WITH GREATER EFFICACY AMONG PARTICIPANTS IN A STUDY OF YOGA FOR CLBP. DESIGN: FROM SEPTEMBER-DECEMBER 2011, A 12-WEEK RANDOMIZED DOSING TRIAL WAS CONDUCTED COMPARING WEEKLY VS. TWICE-WEEKLY 75-MINUTE HATHA YOGA CLASSES FOR 95 PREDOMINANTLY LOW-INCOME MINORITY ADULTS WITH NONSPECIFIC CLBP. PARTICIPANT CHARACTERISTICS COLLECTED AT BASELINE WERE USED TO DETERMINE FACTORS BEYOND TREATMENT ASSIGNMENT (REPORTED IN THE INITIAL STUDY) THAT PREDICTED OUTCOME. WE USED BIVARIATE TESTING TO IDENTIFY BASELINE CHARACTERISTICS ASSOCIATED WITH IMPROVEMENT IN FUNCTION AND PAIN, AND INCLUDED SELECT FACTORS IN A MULTIVARIATE LINEAR REGRESSION. SETTING: RECRUITMENT AND CLASSES OCCURRED IN AN ACADEMIC SAFETY-NET HOSPITAL AND FIVE AFFILIATED COMMUNITY HEALTH CENTERS IN BOSTON, MASSACHUSETTS. PARTICIPANTS: NINETY-FIVE ADULTS WITH NONSPECIFIC CLBP, AGES RANGING FROM 20-64 (MEAN 48) YEARS; 72 WOMEN AND 23 MEN. OUTCOME MEASURES: PRIMARY OUTCOMES WERE CHANGES IN BACK-RELATED FUNCTION (MODIFIED ROLAND-MORRIS DISABILITY QUESTIONNAIRE, RMDQ; 0-23) AND MEAN LOW BACK PAIN INTENSITY (0-10) IN THE PREVIOUS WEEK, FROM BASELINE TO WEEK 12. RESULTS: ADJUSTING FOR GROUP ASSIGNMENT, BASELINE RMDQ, AGE, AND GENDER, FOREIGN NATIONALITY AND LOWER BASELINE SF36 PHYSICAL COMPONENT SCORE (PCS) WERE INDEPENDENTLY ASSOCIATED WITH IMPROVEMENT IN RMDQ. GREATER THAN HIGH SCHOOL EDUCATION LEVEL, CLBP LESS THAN 1 YEAR, AND LOWER BASELINE SF36 PCS WERE INDEPENDENTLY ASSOCIATED WITH IMPROVEMENT IN PAIN INTENSITY. OTHER DEMOGRAPHICS INCLUDING RACE, INCOME, GENDER, BMI, AND USE OF PAIN MEDICATIONS WERE NOT ASSOCIATED WITH EITHER OUTCOME. CONCLUSIONS: POOR PHYSICAL HEALTH AT BASELINE IS ASSOCIATED WITH GREATER IMPROVEMENT FROM YOGA IN BACK-RELATED FUNCTION AND PAIN. RACE, INCOME, AND BODY MASS INDEX DO NOT AFFECT THE POTENTIAL FOR A PERSON WITH LOW BACK PAIN TO EXPERIENCE BENEFIT FROM YOGA.	2014	
                                                                                                                                                                                                                                                                                                                                                                                           
9 1180  54 EVALUATION OF THE EFFECTIVENESS AND EFFICACY OF IYENGAR YOGA THERAPY ON CHRONIC LOW BACK PAIN. STUDY DESIGN: THE EFFECTIVENESS AND EFFICACY OF IYENGAR YOGA FOR CHRONIC LOW BACK PAIN (CLBP) WERE ASSESSED WITH INTENTION-TO-TREAT AND PER-PROTOCOL ANALYSIS. NINETY SUBJECTS WERE RANDOMIZED TO A YOGA (N = 43) OR CONTROL GROUP (N = 47) RECEIVING STANDARD MEDICAL CARE. PARTICIPANTS WERE FOLLOWED 6 MONTHS AFTER COMPLETION OF THE INTERVENTION. OBJECTIVE: THIS STUDY AIMED TO EVALUATE IYENGAR YOGA THERAPY ON CHRONIC LOW BACK PAIN. YOGA SUBJECTS WERE HYPOTHESIZED TO REPORT GREATER REDUCTIONS IN FUNCTIONAL DISABILITY, PAIN INTENSITY, DEPRESSION, AND PAIN MEDICATION USAGE THAN CONTROLS. SUMMARY OF BACKGROUND DATA: CLBP IS A MUSCULOSKELETAL DISORDER WITH PUBLIC HEALTH AND ECONOMIC IMPACT. PILOT STUDIES OF YOGA AND BACK PAIN HAVE REPORTED SIGNIFICANT CHANGES IN CLINICALLY IMPORTANT OUTCOMES. METHODS: SUBJECTS WERE RECRUITED THROUGH SELF-REFERRAL AND HEALTH PROFESSIONAL REFERRALS ACCORDING TO EXPLICIT INCLUSION/EXCLUSION CRITERIA. YOGA SUBJECTS PARTICIPATED IN 24 WEEKS OF BIWEEKLY YOGA CLASSES DESIGNED FOR CLBP. OUTCOMES WERE ASSESSED AT 12 (MIDWAY), 24 (IMMEDIATELY AFTER), AND 48 WEEKS (6-MONTH FOLLOW-UP) AFTER THE START OF THE INTERVENTION USING THE OSWESTRY DISABILITY QUESTIONNAIRE, A VISUAL ANALOG SCALE, THE BECK DEPRESSION INVENTORY, AND A PAIN MEDICATION-USAGE QUESTIONNAIRE. RESULTS: USING INTENTION-TO-TREAT ANALYSIS WITH REPEATED MEASURES ANOVA (GROUP X TIME), SIGNIFICANTLY GREATER REDUCTIONS IN FUNCTIONAL DISABILITY AND PAIN INTENSITY WERE OBSERVED IN THE YOGA GROUP WHEN COMPARED TO THE CONTROL GROUP AT 24 WEEKS. A SIGNIFICANTLY GREATER PROPORTION OF YOGA SUBJECTS ALSO REPORTED CLINICAL IMPROVEMENTS AT BOTH 12 AND 24 WEEKS. IN ADDITION, DEPRESSION WAS SIGNIFICANTLY LOWER IN YOGA SUBJECTS. FURTHERMORE, WHILE A REDUCTION IN PAIN MEDICATION OCCURRED, THIS WAS COMPARABLE IN BOTH GROUPS. WHEN RESULTS WERE ANALYZED USING PER-PROTOCOL ANALYSIS, IMPROVEMENTS WERE OBSERVED FOR ALL OUTCOMES IN THE YOGA GROUP, INCLUDING AGREATER TREND FOR REDUCED PAIN MEDICATION USAGE. ALTHOUGH SLIGHTLY LESS THAN AT 24 WEEKS, THE YOGA GROUP HAD STATISTICALLY SIGNIFICANT REDUCTIONS IN FUNCTIONAL DISABILITY, PAIN INTENSITY, AND DEPRESSION COMPARED TO STANDARD MEDICAL CARE 6-MONTHS POSTINTERVENTION. CONCLUSION: YOGA IMPROVES FUNCTIONAL DISABILITY, PAIN INTENSITY, AND DEPRESSION IN ADULTS WITH CLBP. THERE WAS ALSO A CLINICALLY IMPORTANT TREND FOR THE YOGA GROUP TO REDUCE THEIR PAIN MEDICATION USAGE COMPARED TO THE CONTROL GROUP.	2009	
                                                                                                                                           
10 2596  59 YOGA FOR MILITARY VETERANS WITH CHRONIC LOW BACK PAIN: A RANDOMIZED CLINICAL TRIAL. INTRODUCTION: CHRONIC LOW BACK PAIN (CLBP) IS PREVALENT, ESPECIALLY AMONG MILITARY VETERANS. MANY CLBP TREATMENT OPTIONS HAVE LIMITED BENEFITS AND ARE ACCOMPANIED BY SIDE EFFECTS. MAJOR EFFORTS TO REDUCE OPIOID USE AND EMBRACE NONPHARMACOLOGICAL PAIN TREATMENTS HAVE RESULTED. RESEARCH WITH COMMUNITY CLBP PATIENTS INDICATES THAT YOGA CAN IMPROVE HEALTH OUTCOMES AND HAS FEW SIDE EFFECTS. THE BENEFITS OF YOGA AMONG MILITARY VETERANS WERE EXAMINED. DESIGN: PARTICIPANTS WERE RANDOMIZED TO EITHER YOGA OR DELAYED YOGA TREATMENT IN 2013-2015. OUTCOMES WERE ASSESSED AT BASELINE, 6 WEEKS, 12 WEEKS, AND 6 MONTHS. INTENTION-TO-TREAT ANALYSES OCCURRED IN 2016. SETTING/PARTICIPANTS: ONE HUNDRED AND FIFTY MILITARY VETERANS WITH CLBP WERE RECRUITED FROM A MAJOR VETERANS AFFAIRS MEDICAL CENTER IN CALIFORNIA. INTERVENTION: YOGA CLASSES (WITH HOME PRACTICE) WERE LED BY A CERTIFIED INSTRUCTOR TWICE WEEKLY FOR 12 WEEKS, AND CONSISTED PRIMARILY OF PHYSICAL POSTURES, MOVEMENT, AND BREATHING TECHNIQUES. MAIN OUTCOME MEASURES: THE PRIMARY OUTCOME WAS ROLAND-MORRIS DISABILITY QUESTIONNAIRE SCORES AFTER 12 WEEKS. PAIN INTENSITY WAS IDENTIFIED AS AN IMPORTANT SECONDARY OUTCOME. RESULTS: PARTICIPANT CHARACTERISTICS WERE MEAN AGE 53 YEARS, 26% WERE FEMALE, 35% WERE UNEMPLOYED OR DISABLED, AND MEAN BACK PAIN DURATION WAS 15 YEARS. IMPROVEMENTS IN ROLAND-MORRIS DISABILITY QUESTIONNAIRE SCORES DID NOT DIFFER BETWEEN THE TWO GROUPS AT 12 WEEKS, BUT YOGA PARTICIPANTS HAD GREATER REDUCTIONS IN ROLAND-MORRIS DISABILITY QUESTIONNAIRE SCORES THAN DELAYED TREATMENT PARTICIPANTS AT 6 MONTHS -2.48 (95% CI= -4.08, -0.87). YOGA PARTICIPANTS IMPROVED MORE ON PAIN INTENSITY AT 12 WEEKS AND AT 6 MONTHS. OPIOID MEDICATION USE DECLINED AMONG ALL PARTICIPANTS, BUT GROUP DIFFERENCES WERE NOT FOUND. CONCLUSIONS: YOGA IMPROVED HEALTH OUTCOMES AMONG VETERANS DESPITE EVIDENCE THEY HAD FEWER RESOURCES, WORSE HEALTH, AND MORE CHALLENGES ATTENDING YOGA SESSIONS THAN COMMUNITY SAMPLES STUDIED PREVIOUSLY. THE MAGNITUDE OF PAIN INTENSITY DECLINE WAS SMALL, BUT OCCURRED IN THE CONTEXT OF REDUCED OPIOID USE. THE FINDINGS SUPPORT WIDER IMPLEMENTATION OF YOGA PROGRAMS FOR VETERANS. TRIAL REGISTRATION: THIS STUDY IS REGISTERED AT WWW.CLINICALTRIALS.GOV NCT02524158.	2017	
                                                                                                                                                                                                                                                                                                                                                           
11 2558  58 YOGA FOR CHRONIC LOW BACK PAIN IN A PREDOMINANTLY MINORITY POPULATION: A PILOT RANDOMIZED CONTROLLED TRIAL. BACKGROUND: SEVERAL STUDIES SUGGEST YOGA MAY BE EFFECTIVE FOR CHRONIC LOW BACK PAIN; HOWEVER, TRIALS TARGETING MINORITIES HAVE NOT BEEN CONDUCTED. PRIMARY STUDY OBJECTIVES: ASSESS THE FEASIBILITY OF STUDYING YOGA IN A PREDOMINANTLY MINORITY POPULATION WITH CHRONIC LOW BACK PAIN. COLLECT PRELIMINARY DATA TO PLAN A LARGER POWERED STUDY. STUDY DESIGN: PILOT RANDOMIZED CONTROLLED TRIAL. SETTING: TWO COMMUNITY HEALTH CENTERS IN A RACIALLY DIVERSE NEIGHBORHOOD OF BOSTON, MASSACHUSETTS. PARTICIPANTS: THIRTY ENGLISH-SPEAKING ADULTS (MEAN AGE 44 YEARS, 83% FEMALE, 83% RACIAL/ETHNIC MINORITIES; 48% WITH INCOMES < OR = $30,000) WITH MODERATE-TO-SEVERE CHRONIC LOW BACK PAIN. INTERVENTIONS: STANDARDIZED SERIES OF WEEKLY HATHA YOGA CLASSES FOR 12 WEEKS COMPARED TO A WAITLIST USUAL CARE CONTROL. OUTCOME MEASURES: FEASIBILITY MEASURED BY TIME TO COMPLETE ENROLLMENT, PROPORTION OF RACIAL/ETHNIC MINORITIES ENROLLED, RETENTION RATES, AND ADVERSE EVENTS. PRIMARY EFFICACY OUTCOMES WERE CHANGES FROM BASELINE TO 12 WEEKS IN PAIN SCORE (0=NO PAIN TO 10=WORST POSSIBLE PAIN) AND BACK-RELATED FUNCTION USING THE MODIFIED ROLAND-MORRIS DISABILITY QUESTIONNAIRE (0-23 POINT SCALE, HIGHER SCORES REFLECT POORER FUNCTION). SECONDARY EFFICACY OUTCOMES WERE ANALGESIC USE, GLOBAL IMPROVEMENT, AND QUALITY OF LIFE (SF-36). RESULTS: RECRUITMENT TOOK 2 MONTHS. RETENTION RATES WERE 97% AT 12 WEEKS AND 77% AT 26 WEEKS. MEAN PAIN SCORES FOR YOGA DECREASED FROM BASELINE TO 12 WEEKS (6.7 TO 4.4) COMPARED TO USUAL CARE, WHICH DECREASED FROM 7.5 TO 7.1 (P=.02). MEAN ROLAND SCORES FOR YOGA DECREASED FROM 14.5 TO 8.2 COMPARED TO USUAL CARE, WHICH DECREASED FROM 16.1 TO 12.5 (P=.28). AT 12 WEEKS, YOGA COMPARED TO USUAL CARE PARTICIPANTS REPORTED LESS ANALGESIC USE (13% VS 73%, P=.003), LESS OPIATE USE (0% VS 33%, P=.04), AND GREATER OVERALL IMPROVEMENT (73% VS 27%, P=.03). THERE WERE NO DIFFERENCES IN SF-36 SCORES AND NO SERIOUS ADVERSE EVENTS. CONCLUSION: A YOGA STUDY INTERVENTION IN A PREDOMINANTLY MINORITY POPULATION WITH CHRONIC LOW BACK PAIN WAS MODERATELY FEASIBLE AND MAY BE MORE EFFECTIVE THAN USUAL CARE FOR REDUCING PAIN AND PAIN MEDICATION USE.	2009	
                                                                                                                                                                                                                                                                                                                                                                                                                                      
12  521  45 COMPARING YOGA, EXERCISE, AND A SELF-CARE BOOK FOR CHRONIC LOW BACK PAIN: A RANDOMIZED, CONTROLLED TRIAL. BACKGROUND: CHRONIC LOW BACK PAIN IS A COMMON PROBLEM THAT HAS ONLY MODESTLY EFFECTIVE TREATMENT OPTIONS. OBJECTIVE: TO DETERMINE WHETHER YOGA IS MORE EFFECTIVE THAN CONVENTIONAL THERAPEUTIC EXERCISE OR A SELF-CARE BOOK FOR PATIENTS WITH CHRONIC LOW BACK PAIN. DESIGN: RANDOMIZED, CONTROLLED TRIAL. SETTING: A NONPROFIT, INTEGRATED HEALTH CARE SYSTEM. PATIENTS: 101 ADULTS WITH CHRONIC LOW BACK PAIN. INTERVENTION: 12-WEEK SESSIONS OF YOGA OR CONVENTIONAL THERAPEUTIC EXERCISE CLASSES OR A SELF-CARE BOOK. MEASUREMENTS: PRIMARY OUTCOMES WERE BACK-RELATED FUNCTIONAL STATUS (MODIFIED 24-POINT ROLAND DISABILITY SCALE) AND "BOTHERSOMENESS" OF PAIN (11-POINT NUMERICAL SCALE). THE PRIMARY TIME POINT WAS 12 WEEKS. CLINICALLY SIGNIFICANT CHANGE WAS CONSIDERED TO BE 2.5 POINTS ON THE FUNCTIONAL STATUS SCALE AND 1.5 POINTS ON THE BOTHERSOMENESS SCALE. SECONDARY OUTCOMES WERE DAYS OF RESTRICTED ACTIVITY, GENERAL HEALTH STATUS, AND MEDICATION USE. RESULTS: AFTER ADJUSTMENT FOR BASELINE VALUES, BACK-RELATED FUNCTION IN THE YOGA GROUP WAS SUPERIOR TO THE BOOK AND EXERCISE GROUPS AT 12 WEEKS (YOGA VS. BOOK: MEAN DIFFERENCE, -3.4 [95% CI, -5.1 TO - 1.6] [P < 0.001]; YOGA VS. EXERCISE: MEAN DIFFERENCE, -1.8 [CI, -3.5 TO - 0.1] [P = 0.034]). NO SIGNIFICANT DIFFERENCES IN SYMPTOM BOTHERSOMENESS WERE FOUND BETWEEN ANY 2 GROUPS AT 12 WEEKS; AT 26 WEEKS, THE YOGA GROUP WAS SUPERIOR TO THE BOOK GROUP WITH RESPECT TO THIS MEASURE (MEAN DIFFERENCE, -2.2 [CI, -3.2 TO - 1.2]; P < 0.001). AT 26 WEEKS, BACK-RELATED FUNCTION IN THE YOGA GROUP WAS SUPERIOR TO THE BOOK GROUP (MEAN DIFFERENCE, -3.6 [CI, -5.4 TO - 1.8]; P < 0.001). LIMITATIONS: PARTICIPANTS IN THIS STUDY WERE FOLLOWED FOR ONLY 26 WEEKS AFTER RANDOMIZATION. ONLY 1 INSTRUCTOR DELIVERED EACH INTERVENTION. CONCLUSIONS: YOGA WAS MORE EFFECTIVE THAN A SELF-CARE BOOK FOR IMPROVING FUNCTION AND REDUCING CHRONIC LOW BACK PAIN, AND THE BENEFITS PERSISTED FOR AT LEAST SEVERAL MONTHS.	2005	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
13 2560  55 YOGA FOR CHRONIC LOW BACK PAIN: A RANDOMIZED TRIAL. BACKGROUND: PREVIOUS STUDIES INDICATE THAT YOGA MAY BE AN EFFECTIVE TREATMENT FOR CHRONIC OR RECURRENT LOW BACK PAIN. OBJECTIVE: TO COMPARE THE EFFECTIVENESS OF YOGA AND USUAL CARE FOR CHRONIC OR RECURRENT LOW BACK PAIN. DESIGN: PARALLEL-GROUP, RANDOMIZED, CONTROLLED TRIAL USING COMPUTER-GENERATED RANDOMIZATION CONDUCTED FROM APRIL 2007 TO MARCH 2010. OUTCOMES WERE ASSESSED BY POSTAL QUESTIONNAIRE. (INTERNATIONAL STANDARD RANDOMISED CONTROLLED TRIAL NUMBER REGISTER: ISRCTN 81079604) SETTING: 13 NON-NATIONAL HEALTH SERVICE PREMISES IN THE UNITED KINGDOM. PATIENTS: 313 ADULTS WITH CHRONIC OR RECURRENT LOW BACK PAIN. INTERVENTION: YOGA (N = 156) OR USUAL CARE (N = 157). ALL PARTICIPANTS RECEIVED A BACK PAIN EDUCATION BOOKLET. THE INTERVENTION GROUP WAS OFFERED A 12-CLASS, GRADUALLY PROGRESSING YOGA PROGRAM DELIVERED BY 12 TEACHERS OVER 3 MONTHS. MEASUREMENTS: SCORES ON THE ROLAND-MORRIS DISABILITY QUESTIONNAIRE (RMDQ) AT 3 (PRIMARY OUTCOME), 6, AND 12 (SECONDARY OUTCOMES) MONTHS; PAIN, PAIN SELF-EFFICACY, AND GENERAL HEALTH MEASURES AT 3, 6, AND 12 MONTHS (SECONDARY OUTCOMES). RESULTS: 93 (60%) PATIENTS OFFERED YOGA ATTENDED AT LEAST 3 OF THE FIRST 6 SESSIONS AND AT LEAST 3 OTHER SESSIONS. THE YOGA GROUP HAD BETTER BACK FUNCTION AT 3, 6, AND 12 MONTHS THAN THE USUAL CARE GROUP. THE ADJUSTED MEAN RMDQ SCORE WAS 2.17 POINTS (95% CI, 1.03 TO 3.31 POINTS) LOWER IN THE YOGA GROUP AT 3 MONTHS, 1.48 POINTS (CI, 0.33 TO 2.62 POINTS) LOWER AT 6 MONTHS, AND 1.57 POINTS (CI, 0.42 TO 2.71 POINTS) LOWER AT 12 MONTHS. THE YOGA AND USUAL CARE GROUPS HAD SIMILAR BACK PAIN AND GENERAL HEALTH SCORES AT 3, 6, AND 12 MONTHS, AND THE YOGA GROUP HAD HIGHER PAIN SELF-EFFICACY SCORES AT 3 AND 6 MONTHS BUT NOT AT 12 MONTHS. TWO OF THE 157 USUAL CARE PARTICIPANTS AND 12 OF THE 156 YOGA PARTICIPANTS REPORTED ADVERSE EVENTS, MOSTLY INCREASED PAIN. LIMITATION: THERE WERE MISSING DATA FOR THE PRIMARY OUTCOME (YOGA GROUP, N = 21; USUAL CARE GROUP, N = 18) AND DIFFERENTIAL MISSING DATA (MORE IN THE YOGA GROUP) FOR SECONDARY OUTCOMES. CONCLUSION: OFFERING A 12-WEEK YOGA PROGRAM TO ADULTS WITH CHRONIC OR RECURRENT LOW BACK PAIN LED TO GREATER IMPROVEMENTS IN BACK FUNCTION THAN DID USUAL CARE. PRIMARY FUNDING SOURCE: ARTHRITIS RESEARCH UK.	2011	
                                                                                                                                                                                                                                                                                                                                                                                         
14 2374  59 WHICH CHRONIC LOW BACK PAIN PATIENTS RESPOND FAVORABLY TO YOGA, PHYSICAL THERAPY, AND A SELF-CARE BOOK? RESPONDER ANALYSES FROM A RANDOMIZED CONTROLLED TRIAL. PURPOSE: TO IDENTIFY BASELINE CHARACTERISTICS OF ADULTS WITH CHRONIC LOW BACK PAIN (CLBP) THAT PREDICT RESPONSE (I.E., A CLINICALLY IMPORTANT IMPROVEMENT) AND/OR MODIFY TREATMENT EFFECT ACROSS THREE NONPHARMACOLOGIC INTERVENTIONS. DESIGN: SECONDARY ANALYSIS OF A RANDOMIZED CONTROLLED TRIAL. SETTING: ACADEMIC SAFETY NET HOSPITAL AND SEVEN FEDERALLY QUALIFIED COMMUNITY HEALTH CENTERS. SUBJECTS: ADULTS WITH CLBP (N = 299). METHODS: WE REPORT PATIENT CHARACTERISTICS THAT WERE PREDICTORS OF RESPONSE AND/OR MODIFIED TREATMENT EFFECT ACROSS THREE 12-WEEK TREATMENTS: YOGA, PHYSICAL THERAPY [PT], AND A SELF-CARE BOOK. USING PRESELECTED CHARACTERISTICS, WE USED LOGISTIC REGRESSION TO IDENTIFY PREDICTORS OF "RESPONSE," DEFINED AS A >/=30% IMPROVEMENT IN THE ROLAND MORRIS DISABILITY QUESTIONNAIRE. THEN, USING "RESPONSE" AS OUR OUTCOME, WE IDENTIFIED BASELINE CHARACTERISTICS THAT WERE TREATMENT EFFECT MODIFIERS BY TESTING FOR STATISTICAL INTERACTION (P < 0.05) ACROSS TWO COMPARISONS: 1) YOGA-OR-PT VS SELF-CARE AND 2) YOGA VS PT. RESULTS: OVERALL, 39% (116/299) OF PARTICIPANTS WERE RESPONDERS, WITH MORE RESPONDERS IN THE YOGA-OR-PT GROUP (42%) THAN THE SELF-CARE (23%) GROUP. THERE WAS NO DIFFERENCE IN PROPORTION RESPONDING TO YOGA (48%) VS PT (37%, ODDS RATIO [OR] = 1.5, 95% CONFIDENCE INTERVAL = 0.88 - 2.6). PREDICTORS OF RESPONSE INCLUDED HAVING MORE THAN A HIGH SCHOOL EDUCATION, A HIGHER INCOME, EMPLOYMENT, FEW DEPRESSIVE SYMPTOMS, LOWER PERCEIVED STRESS, FEW WORK-RELATED FEAR AVOIDANCE BELIEFS, HIGH PAIN SELF-EFFICACY, AND BEING A NONSMOKER. EFFECT MODIFIERS INCLUDED USE OF PAIN MEDICATION AND FEAR AVOIDANCE BELIEFS RELATED TO PHYSICAL ACTIVITY (BOTH P = 0.02 FOR INTERACTION). WHEN COMPARING YOGA OR PT WITH SELF-CARE, A GREATER PROPORTION WERE RESPONDERS AMONG THOSE USING PAIN MEDS (OR = 5.3), WHICH DIFFERED FROM THOSE NOT TAKING PAIN MEDS (OR = 0.94) AT BASELINE. WE ALSO FOUND GREATER TREATMENT RESPONSE AMONG THOSE WITH LOWER (OR = 7.0), BUT NOT HIGH (OR = 1.3), FEAR AVOIDANCE BELIEFS AROUND PHYSICAL ACTIVITY. CONCLUSIONS: OUR FINDINGS REVEALED IMPORTANT SUBGROUPS FOR WHOM REFERRAL TO YOGA OR PT MAY IMPROVE CLBP OUTCOMES.	2021	
                                                                                                                                                                                                                                                                                                                                                                         
15  162  49 A RANDOMISED CONTROLLED TRIAL OF YOGA FOR THE TREATMENT OF CHRONIC LOW BACK PAIN: RESULTS OF A PILOT STUDY. OBJECTIVE: TO CONDUCT A PILOT TRIAL OF YOGA FOR THE TREATMENT OF CHRONIC LOW BACK PAIN (LBP) TO INFORM THE FEASIBILITY AND PRACTICALITY OF CONDUCTING A FULL-SCALE TRIAL IN THE UK; AND TO ASSESS THE EFFICACY OF YOGA FOR THE TREATMENT OF CHRONIC LOW BACK PAIN. DESIGN: A PRAGMATIC RANDOMISED CONTROLLED TRIAL WAS UNDERTAKEN COMPARING YOGA TO USUAL CARE. PARTICIPANTS: TWENTY PARTICIPANTS WHO HAD PRESENTED TO THEIR GP WITH CHRONIC LOW BACK PAIN IN THE PREVIOUS 18 MONTHS WERE RECRUITED VIA GP RECORDS FROM ONE PRACTICE IN YORK, UK. INTERVENTIONS: TWENTY PATIENTS WERE RANDOMISED TO EITHER 12 WEEKLY 75-MIN SESSIONS OF SPECIALISED YOGA PLUS WRITTEN ADVICE, OR USUAL CARE PLUS WRITTEN ADVICE. ALLOCATION WAS 50/50. MAIN OUTCOME MEASURES: RECRUITMENT RATE, LEVELS OF INTERVENTION ATTENDANCE, AND LOSS TO FOLLOW-UP WERE THE MAIN NON-CLINICAL OUTCOMES. CHANGE AS MEASURED BY THE ROLAND AND MORRIS DISABILITY QUESTIONNAIRE WAS THE PRIMARY CLINICAL OUTCOME. CHANGES IN THE ABERDEEN BACK PAIN SCALE, SF-12, EQ-5D, AND PAIN SELF-EFFICACY WERE SECONDARY CLINICAL OUTCOMES. DATA WERE COLLECTED VIA POSTAL QUESTIONNAIRE AT BASELINE, 4 WEEKS, AND 12 WEEKS FOLLOW-UP. RESULTS: OF THE 286 PATIENTS IDENTIFIED FROM THE GP DATABASE, 52 (18%) CONSENTED AND RETURNED THE ELIGIBILITY QUESTIONNAIRE, OUT OF THESE 20 (6.9%) WERE ELIGIBLE AND RANDOMISED. THE TOTAL PERCENTAGE OF PATIENTS RANDOMISED FROM THE GP PRACTICE POPULATION WAS 0.28%. TEN PATIENTS WERE RANDOMISED TO YOGA, RECEIVING AN AVERAGE OF 1.7 SESSIONS (RANGE 0-5), AND 10 WERE RANDOMISED TO USUAL CARE. AT 12 WEEKS FOLLOW-UP DATA WAS RECEIVED FROM 60% OF PATIENTS IN THE YOGA GROUP AND 90% OF PATIENTS IN THE USUAL CARE GROUP (75% OVERALL). NO SIGNIFICANT DIFFERENCES WERE SEEN BETWEEN GROUPS IN CLINICAL OUTCOMES APART FROM ON THE ABERDEEN BACK PAIN SCALE AT FOUR WEEKS FOLLOW-UP WHERE THE YOGA GROUP REPORTED SIGNIFICANTLY LESS PAIN. CONCLUSION: THIS PILOT STUDY PROVIDED USEFUL DATA AND INFORMATION TO INFORM THE DESIGN AND DEVELOPMENT OF A FULL-SCALE TRIAL OF YOGA FOR CLBP IN THE UK. A KEY FINDING IS THE CALCULATION OF GP PRACTICE TOTAL LIST SIZE REQUIRED FOR PATIENT RECRUITMENT IN A FULL-SCALE TRIAL, AND THE NEED TO IMPLEMENT METHODS TO INCREASE CLASS ATTENDANCE.	2010	
                                                                                                                                                                                                                                                                                                                                                              
16 1953  50 SECONDARY OUTCOMES FROM A RANDOMIZED CONTROLLED TRIAL OF YOGA FOR VETERANS WITH CHRONIC LOW-BACK PAIN. CHRONIC LOW-BACK PAIN (CLBP) IS A PREVALENT CONDITION, AND RATES ARE HIGHER AMONG MILITARY VETERANS. CLBP IS A PERSISTENT CONDITION, AND TREATMENT OPTIONS HAVE EITHER MODEST EFFECTS OR A SIGNIFICANT RISK OF SIDE-EFFECTS, WHICH HAS LED TO RECENT EFFORTS TO EXPLORE MIND-BODY INTERVENTION OPTIONS AND REDUCE OPIOID MEDICATION USE. PRIOR STUDIES OF YOGA FOR CLBP IN COMMUNITY SAMPLES, AND THE MAIN RESULTS OF A RECENT TRIAL WITH MILITARY VETERANS, INDICATE THAT YOGA CAN REDUCE BACK-RELATED DISABILITY AND PAIN INTENSITY. SECONDARY OUTCOMES FROM THE TRIAL OF YOGA WITH MILITARY VETERANS ARE PRESENTED HERE. IN THE STUDY, 150 MILITARY VETERANS (VETERANS ADMINISTRATION PATIENTS) WITH CLBP WERE RANDOMIZED TO EITHER YOGA OR A DELAYED-TREATMENT GROUP RECEIVING USUAL CARE BETWEEN 2013 AND 2015. ASSESSMENTS OCCURRED AT BASELINE, 6 WEEKS, 12 WEEKS, AND 6 MONTHS. INTENT-TO-TREAT ANALYSES WERE CONDUCTED. YOGA CLASSES LASTING 60 MINUTES EACH WERE OFFERED TWICE WEEKLY FOR 12 WEEKS. YOGA SESSIONS CONSISTED OF PHYSICAL POSTURES, MOVEMENT, FOCUSED ATTENTION, AND BREATHING TECHNIQUES. HOME PRACTICE GUIDED BY A MANUAL WAS STRONGLY RECOMMENDED. THE PRIMARY OUTCOME MEASURE WAS ROLAND-MORRIS DISABILITY QUESTIONNAIRE SCORES AFTER 12 WEEKS. SECONDARY OUTCOMES INCLUDED PAIN INTENSITY, PAIN INTERFERENCE, DEPRESSION, FATIGUE, QUALITY OF LIFE, SELF-EFFICACY, AND MEDICATION USAGE. YOGA PARTICIPANTS IMPROVED MORE THAN DELAYED-TREATMENT PARTICIPANTS ON PAIN INTERFERENCE, FATIGUE, QUALITY OF LIFE, AND SELF-EFFICACY AT 12 WEEKS AND/OR 6 MONTHS. YOGA PARTICIPANTS HAD GREATER IMPROVEMENTS ACROSS A NUMBER OF IMPORTANT SECONDARY HEALTH OUTCOMES COMPARED TO CONTROLS. BENEFITS EMERGED DESPITE SOME VETERANS FACING CHALLENGES WITH ATTENDING YOGA SESSIONS IN PERSON. THE FINDINGS SUPPORT WIDER IMPLEMENTATION OF YOGA PROGRAMS FOR VETERANS, WITH ATTENTION TO INCREASING ACCESSIBILITY OF YOGA PROGRAMS IN THIS POPULATION.	2020	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
17 2824  41 YOGA VERSUS EDUCATION FOR VETERANS WITH CHRONIC LOW BACK PAIN: STUDY PROTOCOL FOR A RANDOMIZED CONTROLLED TRIAL. BACKGROUND: CHRONIC LOW BACK PAIN IS THE MOST FREQUENT PAIN CONDITION IN VETERANS AND CAUSES SUBSTANTIAL SUFFERING, DECREASED FUNCTIONAL CAPACITY, AND LOWER QUALITY OF LIFE. SYMPTOMS OF POST-TRAUMATIC STRESS, DEPRESSION, AND MILD TRAUMATIC BRAIN INJURY ARE HIGHLY PREVALENT IN VETERANS WITH BACK PAIN. YOGA FOR LOW BACK PAIN HAS BEEN DEMONSTRATED TO BE EFFECTIVE FOR CIVILIANS IN RANDOMIZED CONTROLLED TRIALS. HOWEVER, IT IS UNKNOWN IF RESULTS FROM PREVIOUSLY PUBLISHED TRIALS GENERALIZE TO MILITARY POPULATIONS. METHODS/DESIGN: THIS STUDY IS A PARALLEL RANDOMIZED CONTROLLED TRIAL COMPARING YOGA TO EDUCATION FOR 120 VETERANS WITH CHRONIC LOW BACK PAIN. PARTICIPANTS ARE VETERANS >/=18 YEARS OLD WITH LOW BACK PAIN PRESENT ON AT LEAST HALF THE DAYS IN THE PAST SIX MONTHS AND A SELF-REPORTED AVERAGE PAIN INTENSITY IN THE PREVIOUS WEEK OF >/=4 ON A 0-10 SCALE. THE 24-WEEK STUDY HAS AN INITIAL 12-WEEK INTERVENTION PERIOD, WHERE PARTICIPANTS ARE RANDOMIZED EQUALLY INTO (1) A STANDARDIZED WEEKLY GROUP YOGA CLASS WITH HOME PRACTICE OR (2) EDUCATION DELIVERED WITH A SELF-CARE BOOK. PRIMARY OUTCOME MEASURES ARE CHANGE AT 12 WEEKS IN LOW BACK PAIN INTENSITY MEASURED BY THE DEFENSE AND VETERANS PAIN RATING SCALE (0-10) AND BACK-RELATED FUNCTION USING THE 23-POINT ROLAND MORRIS DISABILITY QUESTIONNAIRE. IN THE SUBSEQUENT 12-WEEK FOLLOW-UP PERIOD, YOGA PARTICIPANTS ARE ENCOURAGED TO CONTINUE HOME YOGA PRACTICE AND EDUCATION PARTICIPANTS CONTINUE FOLLOWING RECOMMENDATIONS FROM THE BOOK. QUALITATIVE INTERVIEWS WITH VETERANS IN THE YOGA GROUP AND THEIR PARTNERS EXPLORE THE IMPACT OF CHRONIC LOW BACK PAIN AND YOGA ON FAMILY RELATIONSHIPS. WE ALSO ASSESS COST-EFFECTIVENESS FROM THREE PERSPECTIVES: THE VETERAN, THE VETERANS HEALTH ADMINISTRATION, AND SOCIETY USING ELECTRONIC MEDICAL RECORDS, SELF-REPORTED COST DATA, AND STUDY RECORDS. DISCUSSION: THIS STUDY WILL HELP DETERMINE IF YOGA CAN BECOME AN EFFECTIVE TREATMENT FOR VETERANS WITH CHRONIC LOW BACK PAIN AND PSYCHOLOGICAL COMORBIDITIES. TRIAL REGISTRATION: CLINICALTRIALS.GOV: NCT02224183.	2016	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
18  721  42 EFFECT OF IYENGAR YOGA THERAPY FOR CHRONIC LOW BACK PAIN. LOW BACK PAIN IS A SIGNIFICANT PUBLIC HEALTH PROBLEM AND ONE OF THE MOST COMMONLY REPORTED REASONS FOR THE USE OF COMPLEMENTARY ALTERNATIVE MEDICINE. A RANDOMIZED CONTROL TRIAL WAS CONDUCTED IN SUBJECTS WITH NON-SPECIFIC CHRONIC LOW BACK PAIN COMPARING IYENGAR YOGA THERAPY TO AN EDUCATIONAL CONTROL GROUP. BOTH PROGRAMS WERE 16 WEEKS LONG. SUBJECTS WERE PRIMARILY SELF-REFERRED AND SCREENED BY PRIMARY CARE PHYSICIANS FOR STUDY OF INCLUSION/EXCLUSION CRITERIA. THE PRIMARY OUTCOME FOR THE STUDY WAS FUNCTIONAL DISABILITY. SECONDARY OUTCOMES INCLUDING PRESENT PAIN INTENSITY, PAIN MEDICATION USAGE, PAIN-RELATED ATTITUDES AND BEHAVIORS, AND SPINAL RANGE OF MOTION WERE MEASURED BEFORE AND AFTER THE INTERVENTIONS. SUBJECTS HAD LOW BACK PAIN FOR 11.2+/-1.54 YEARS AND 48% USED PAIN MEDICATION. OVERALL, SUBJECTS PRESENTED WITH LESS PAIN AND LOWER FUNCTIONAL DISABILITY THAN SUBJECTS IN OTHER PUBLISHED INTERVENTION STUDIES FOR CHRONIC LOW BACK PAIN. OF THE 60 SUBJECTS ENROLLED, 42 (70%) COMPLETED THE STUDY. MULTIVARIATE ANALYSES OF OUTCOMES IN THE CATEGORIES OF MEDICAL, FUNCTIONAL, PSYCHOLOGICAL AND BEHAVIORAL FACTORS INDICATED THAT SIGNIFICANT DIFFERENCES BETWEEN GROUPS EXISTED IN FUNCTIONAL AND MEDICAL OUTCOMES BUT NOT FOR THE PSYCHOLOGICAL OR BEHAVIORAL OUTCOMES. UNIVARIATE ANALYSES OF MEDICAL AND FUNCTIONAL OUTCOMES REVEALED SIGNIFICANT REDUCTIONS IN PAIN INTENSITY (64%), FUNCTIONAL DISABILITY (77%) AND PAIN MEDICATION USAGE (88%) IN THE YOGA GROUP AT THE POST AND 3-MONTH FOLLOW-UP ASSESSMENTS. THESE PRELIMINARY DATA INDICATE THAT THE MAJORITY OF SELF-REFERRED PERSONS WITH MILD CHRONIC LOW BACK PAIN WILL COMPLY TO AND REPORT IMPROVEMENT ON MEDICAL AND FUNCTIONAL PAIN-RELATED OUTCOMES FROM IYENGAR YOGA THERAPY.	2005	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
19 2811  37 YOGA TO PREVENT MOBILITY LIMITATIONS IN OLDER ADULTS: FEASIBILITY OF A RANDOMIZED CONTROLLED TRIAL. BACKGROUND: THE LOSS OF MOBILITY DURING AGING IMPACTS INDEPENDENCE AND LEADS TO FURTHER DISABILITY, MORBIDITY, AND REDUCED LIFE EXPECTANCY. OUR OBJECTIVE WAS TO EXAMINE THE FEASIBILITY AND SAFETY OF CONDUCTING A RANDOMIZED CONTROLLED TRIAL OF YOGA FOR OLDER ADULTS AT RISK FOR MOBILITY LIMITATIONS. METHODS: SEDENTARY OLDER ADULTS (N = 46; AGE 60-89) WERE RECRUITED AND RANDOMIZED TO EITHER YOGA OR A HEALTH EDUCATION COMPARISON GROUP. YOGA SESSIONS (60-MIN) OCCURRED 2X WEEKLY, AND 90-MIN HEALTH EDUCATION SESSIONS OCCURRED WEEKLY, FOR 10 WEEKS. THE PRIMARY OUTCOMES WERE RECRUITMENT RATE, INTERVENTION ATTENDANCE, AND RETENTION AT ASSESSMENTS. ADVERSE EVENT RATES AND PARTICIPANT SATISFACTION WERE ALSO MEASURED. PHYSICAL PERFORMANCE MEASURES OF GAIT, BALANCE, AND STRENGTH AND SELF-REPORT OUTCOME MEASURES WERE ADMINISTERED AT BASELINE AND 10-WEEKS. RESULTS: RECRUITMENT LASTED 6 MONTHS. RETENTION OF PARTICIPANTS AT THE 10-WEEK FOLLOW-UP WAS HIGH (89% - PERFORMANCE MEASURES; 98% - SELF-REPORT QUESTIONNAIRES). ATTENDANCE WAS GOOD WITH 82% OF YOGA AND 74% OF HEALTH EDUCATION PARTICIPANTS ATTENDING AT LEAST 50% OF THE SESSIONS. NO SERIOUS ADVERSE EVENTS WERE REPORTED. PATIENT SATISFACTION WITH THE INTERVENTIONS WAS HIGH. THE MEAN EFFECT SIZE FOR THE PHYSICAL PERFORMANCE MEASURES WAS 0.35 WITH SOME OVER 0.50. THE MEAN EFFECT SIZE FOR SELF-REPORT OUTCOME MEASURES WAS 0.36. CONCLUSIONS: RESULTS INDICATE THAT IT IS FEASIBLE TO CONDUCT A LARGER RCT OF YOGA FOR SEDENTARY OLDER ADULTS AT RISK FOR MOBILITY PROBLEMS. THE YOGA AND COMPARISON INTERVENTIONS WERE SAFE, WELL ACCEPTED, AND WELL ATTENDED. EFFECT SIZES SUGGEST YOGA MAY HAVE IMPORTANT BENEFITS FOR THIS POPULATION AND SHOULD BE STUDIED FURTHER. TRIAL REGISTRATION: CLINICALTRIALS # NCT03544879 ; RETROSPECTIVELY REGISTERED 4 JUNE, 2018.	2018	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
20 2830  41 YOGA VS STRETCHING IN VETERANS WITH CHRONIC LOWER BACK PAIN AND THE ROLE OF MINDFULNESS: A PILOT RANDOMIZED CONTROLLED TRIAL. OBJECTIVE: THE PURPOSE OF THIS STUDY WAS TO INVESTIGATE THE FEASIBILITY OF RECRUITING, RANDOMIZING, ENROLLING, AND COLLECTING OUTCOME DATA ON VETERAN PATIENTS WITH CHRONIC LOW BACK PAIN (CLBP) WHO UNDERGO AN 8-WEEK, ACTIVE EXERCISE CLASS WITH MINDFULNESS (YOGA CLASS) AND WITHOUT (STRETCHING CLASS). METHODS: UNITED STATES VETERANS WITH CLBP BASED ON INCLUSION/EXCLUSION CRITERIA WERE RANDOMIZED TO 1 OF 2 GROUPS. THE STUDY DESIGN WAS A PILOT RANDOMIZED CONTROLLED TRIAL. TWENTY CLBP PATIENTS ATTENDED A YOGA CLASS OR STRETCHING CLASS ONCE PER WEEK FOR 8 WEEKS AT THE VETERANS AFFAIRS ROCHESTER OUTPATIENT CENTER, ROCHESTER, NEW YORK. THE FOLLOWING MEASUREMENTS WERE OBTAINED: RECRUITMENT OR ENROLLMENT DATA, COMPLIANCE DATA TO INCLUDE CLASS ATTENDANCE AND HOME EXERCISE, AND COMPLIANCE DATA REGARDING ABILITY TO COLLECT OUTCOME MEASURES AT BASELINE AND AT COMPLETION. OUTCOME MEASURES INCLUDED PAIN (PEG), QUALITY OF LIFE (PROMIS GLOBAL HEALTH SURVEY), SELF-EFFICACY (2-ITEM QUESTIONNAIRE), FEAR AVOIDANCE BELIEF, CATASTROPHIZING, AND SOCIAL ENGAGEMENT IN ADDITION TO QUALITATIVE CLINICIAN OPEN-ENDED QUESTIONS POSTINTERVENTION. RESULTS: FORTY-FIVE VETERANS WERE QUERIED REGARDING INTEREST IN PARTICIPATION. OF THESE, 34 (76%) MET THE STUDY'S CRITERIA. TWENTY (44%) AGREED TO PARTICIPATE AND WERE CONSENTED, RANDOMIZED, AND ENROLLED IN THE STUDY. INITIAL AND FINAL OUTCOME MEASURES WERE OBTAINED FOR EACH PARTICIPANT (100%). FORTY PERCENT ATTENDED MORE THAN 80% OF THE SESSIONS FOR BOTH YOGA AND STRETCHING GROUPS. CONCLUSION: THIS PILOT STUDY DEMONSTRATED FEASIBILITY OF RECRUITING, ENROLLING, AND COLLECTING OUTCOME DATA ON CLBP VETERAN PATIENTS PARTICIPATING IN YOGA AND STRETCHING CLASS. THE DATA FROM THIS PILOT WILL INFORM THE DEVELOPMENT OF A RANDOMIZED, COMPARATIVE EFFECTIVENESS STUDY OF YOGA WITH AND WITHOUT MINDFULNESS IN THE MANAGEMENT OF CLBP.	2020