1 654 198 EEG BASED INTERPRETATION OF HUMAN BRAIN ACTIVITY DURING YOGA AND MEDITATION USING MACHINE LEARNING: A SYSTEMATIC REVIEW. OBJECTIVES: THE PRESENT INVESTIGATION IS TO STUDY THE IMPACT OF YOGA AND MEDITATION ON BRAIN WAVES CONCERNING PHYSICAL AND MENTAL HEALTH. THERE ARE MAINLY THREE STAGES (STEPS) IN THE BRAIN WAVE CLASSIFICATION:(I) PREPROCESSING, II) FEATURE EXTRACTION, AND III) CLASSIFICATION. THIS WORK PROVIDES A REVIEW OF INTERPRETATION METHODS OF BRAIN SIGNALS (ELECTROENCEPHALOGRAM (EEG)) EEG DURING YOGA AND MEDITATION. PAST RESEARCH HAS REVEALED SIGNIFICANT MENTAL AND PHYSICAL ADVANTAGES WITH YOGA AND MEDITATION. METHODS: THE RESEARCH TOPIC REVIEWED FOCUSED ON THE MACHINE LEARNING STRATEGIES APPLIED FOR THE INTERPRETATION OF BRAIN WAVES. IN ADDRESSING THE RESEARCH QUESTIONS HIGHLIGHTED EARLIER IN THE GENERAL INTRODUCTION, WE CONDUCTED A SYSTEMATIC SEARCH OF ARTICLES FROM TARGETED SCIENTIFIC AND JOURNAL ONLINE DATABASES THAT INCLUDED PUBMED, WEB OF SCIENCE, IEEE XPLORE DIGITAL LIBRARY (IEEE), AND ARXIV DATABASES BASED ON THEIR RELEVANCE TO THE RESEARCH QUESTIONS AND DOMAIN TOPIC. THE SURVEY TOPIC IS RELATIVELY NASCENT, AND THEREFORE, THE SCOPE OF THE SEARCH PERIOD WAS LIMITED TO THE 20-YEAR TIMELINE THAT WAS DEEMED REPRESENTATIVE OF THE RESEARCH TOPIC UNDER INVESTIGATION. THE LITERATURE SEARCH WAS BASED ON THE KEYWORDS "EEG", "YOGA*" AND "MEDITATION*". THE KEY PHRASES WERE CONCATENATED USING BOOLEAN EXPRESSIONS AND APPLIED TO SEARCH THROUGH THE SELECTED ONLINE DATABASES YIELDING A TOTAL OF 120 ARTICLES. THE ONLINE DATABASES WERE SELECTED BASED ON THE RELEVANCY OF CONTENT WITH THE RESEARCH TITLE, RESEARCH QUESTIONS, AND THE DOMAIN APPLICATION. THE LITERATURE REVIEW SEARCH, PROCESS, AND CLASSIFICATION WERE CAREFULLY CONDUCTED GUIDED BY TWO DEFINED MEASURES; 1.) INCLUSION CRITERIA; AND 2.) EXCLUSION CRITERIA. THESE MEASURES DEFINE THE CRITERIA FOR SEARCHING AND EXTRACTING RELEVANT ARTICLES RELATING TO THE RESEARCH TITLE AND DOMAIN OF INTEREST. RESULTS: OUR LITERATURE SEARCH AND REVIEW INDICATE A BROAD SPECTRUM OF NEURAL MECHANICS UNDER A VARIETY OF MEDITATION STYLES HAVE BEEN INVESTIGATED. A DETAILED ANALYSIS OF VARIOUS MENTAL STATES USING ZEN, CHAN, MINDFULNESS, TM, RAJAYOGA, KUNDALINI, YOGA, AND OTHER MEDITATION STYLES HAVE BEEN DESCRIBED BY MEANS OF EEG BANDS. CLASSIFICATION OF MENTAL STATES USING KNN, SVM, RANDOM FOREST, FUZZY LOGIC, NEURAL NETWORKS, CONVOLUTIONAL NEURAL NETWORKS HAS BEEN DESCRIBED. SUPERIOR RESEARCH IS STILL REQUIRED TO CLASSIFY THE EEG SIGNATURES CORRESPONDING TO DIFFERENT MENTAL STATES. CONCLUSIONS: YOGA PRACTICE MAY BE AN EFFECTIVE ADJUNCTIVE TREATMENT FOR A CLINICAL AND AGING POPULATION. ADVANCED RESEARCH CAN EXAMINE THE EFFECTS OF SPECIFIC BRANCHES OF YOGA ON A DESIGNATED CLINICAL GROUPING. YOGA AND MEDITATION INCREASED OVERALL HEALTHY BRAIN ACTIVITY. 2021 2 2061 39 THE BENEFITS OF YOGA IN CHILDREN. THE NUMBER OF CHILDREN SUFFERING FROM STRESS AND ANXIETY IN MALAYSIA IS ON THE RISE. EVIDENCE SHOWS THAT MIND-BODY THERAPIES SUCH AS MINDFULNESS THERAPY, MEDITATION AND YOGA HAVE BEEN PRACTICED IN MANY OTHER COUNTRIES TO REDUCE AND/OR MANAGE THE PSYCHOLOGICAL EFFECTS OF STRESS AND ANXIETY. THIS REVIEW ARTICLE LOOKS AT THE INTERVENTION OF YOGA AS A MEDITATIVE MOVEMENT PRACTICE IN HELPING SCHOOL CHILDREN MANAGE STRESS AND ANXIETY. ARTICLES WERE RETRIEVED USING A COMBINATION OF DATABASES INCLUDING PUBMED/MEDLINE, AND PSYCINFO. NOT ONLY PEER-REVIEWED ARTICLES, BUT ALSO THOSE WRITTEN IN ENGLISH LANGUAGE WERE INCLUDED IN THIS REVIEW. ALL STUDIES REVIEWED HAD INCORPORATED SOME FORM OF MEDITATIVE MOVEMENT EXERCISE. THE INTERVENTION ENCOMPASSED ASANAS (POSTURES), PRANAYAMA (EXPANSION OF LIFE FORCE), DHARANA (CONCENTRATION) AND DHYANA (MEDITATION), WHICH ARE THE DIFFERENT PATHS IN YOGA. A TOTAL OF EIGHT ARTICLES MET THE INCLUSION CRITERIA AND WERE REVIEWED. THE FINDINGS OF THIS REVIEW REVEAL THAT THE PRACTICE OF YOGA HAS BROUGHT ABOUT, AMONG OTHER THINGS, IMPROVEMENT IN MANAGING AND REDUCING STRESS AND ANXIETY. DESPITE THE LIMITATIONS IN MOST, IF NOT ALL OF THE STUDIES REVIEWED, IN TERMS OF HETEROGENEITY AND SAMPLE SIZE, YOGA APPEARS TO BE AN EFFECTIVE MODALITY FOR HELPING CHILDREN COPE WITH STRESS AND ANXIETY. IT APPEARS THAT IF SCHOOLS IN MALAYSIA CAN INCORPORATE YOGA AS PART OF THE PHYSICAL EDUCATION CURRICULUM, IT WILL DEFINITELY BENEFIT THE STUDENTS. 2018 3 1051 57 EFFECTS OF YOGA ON BRAIN WAVES AND STRUCTURAL ACTIVATION: A REVIEW. PREVIOUS RESEARCH HAS SHOWN THE VAST MENTAL AND PHYSICAL HEALTH BENEFITS ASSOCIATED WITH YOGA. YOGA PRACTICE CAN BE DIVIDED INTO SUBCATEGORIES THAT INCLUDE POSTURE-HOLDING EXERCISE (ASANA), BREATHING (PRANAYAMA, KRIYA), AND MEDITATION (SAHAJ) PRACTICE. STUDIES MEASURING MENTAL HEALTH OUTCOMES HAVE SHOWN DECREASES IN ANXIETY, AND INCREASES IN COGNITIVE PERFORMANCE AFTER YOGA INTERVENTIONS. SIMILAR STUDIES HAVE ALSO SHOWN COGNITIVE ADVANTAGES AMONGST YOGA PRACTITIONERS VERSUS NON-PRACTITIONERS. THE MENTAL HEALTH AND COGNITIVE BENEFITS OF YOGA ARE EVIDENT, BUT THE PHYSIOLOGICAL AND STRUCTURAL CHANGES IN THE BRAIN THAT LEAD TO THIS REMAIN A TOPIC THAT LACKS CONSENSUS. THEREFORE, THE PURPOSE OF THIS STUDY WAS TO EXAMINE AND REVIEW EXISTING LITERATURE ON THE EFFECTS OF YOGA ON BRAIN WAVES AND STRUCTURAL CHANGES AND ACTIVATION. AFTER A NARROWED SEARCH THROUGH A SET OF SPECIFIC INCLUSION AND EXCLUSION CRITERIA, 15 ARTICLES WERE USED IN THIS REVIEW. IT WAS CONCLUDED THAT BREATHING, MEDITATION, AND POSTURE-BASED YOGA INCREASED OVERALL BRAIN WAVE ACTIVITY. INCREASES IN GRAYGRAY MATTER ALONG WITH INCREASES IN AMYGDALA AND FRONTAL CORTEX ACTIVATION WERE EVIDENT AFTER A YOGA INTERVENTION. YOGA PRACTICE MAY BE AN EFFECTIVE ADJUNCTIVE TREATMENT FOR A CLINICAL AND HEALTHY AGING POPULATION. FURTHER RESEARCH CAN EXAMINE THE EFFECTS OF SPECIFIC BRANCHES OF YOGA ON A DESIGNATED CLINICAL POPULATION. 2015 4 1931 42 ROLE OF YOGA IN MANAGING THE CONSEQUENCES OF WORK STRESS-A REVIEW. THE PURPOSE OF THIS STUDY IS TO SYSTEMATICALLY REVIEW THE LITERATURE ON THE ROLE OF YOGA IN MANAGING THE CONSEQUENCES OF WORK STRESS TO EXAMINE THE CURRENT BODY OF KNOWLEDGE IN THIS FIELD AND TO PROVIDE DIRECTIONS FOR FUTURE RESEARCH IN THIS DOMAIN. A COMPREHENSIVE LITERATURE SEARCH OF 14 DATABASES USING 12 DIFFERENT SEARCH TERM COMBINATIONS IN THE AREA OF 'YOGA AND WORK STRESS' WAS CARRIED OUT TILL THE PERIOD JANUARY 2022 FOLLOWING THE PRISMA GUIDELINES TO SELECT THE RELEVANT ENGLISH-LANGUAGE PEER-REVIEWED SCIMAGO RANKED ARTICLES FOR REVIEW. TWO BROAD CLASSIFICATION AREAS WERE CONSIDERED TO UNDERSTAND THE RESEARCH QUESTION OF INTEREST IN THIS STUDY: (I) CONSEQUENCES OF WORK STRESS [WHICH INCLUDES-(A) BEHAVIOURAL; (B) PHYSICAL; AND (C) PSYCHOLOGICAL] AND; (II) SCHOOLS OF THOUGHT IN YOGA FOR WORK STRESS MANAGEMENT [WHICH INCLUDES-(A) HATHA YOGA (HY); (B) VINI YOGA (VY); (C) DRU YOGA (DY); (D) INTEGRATED YOGA (IY); (E) KUNDALINI YOGA (KUY); (F) KRIPALU YOGA (KRY); (G) IYENGAR YOGA; (H) ASHTANGA YOGA (AY); (I) POWER YOGA (PY); AND (J) YOGA (GENERAL)]. THE MAIN CONTRIBUTION OF THIS STUDY IS THAT IT IS THE FIRST OF ITS KIND COMPREHENSIVE REVIEW IN THE AREA OF 'YOGA AND ITS ROLE IN MANAGING THE CONSEQUENCES OF WORK STRESS' COLLATING THE DISPERSED KNOWLEDGE IN THIS AREA BY INDICATING THE VARIOUS UNDERSTUDIED STAND-ALONE AND COMBINED CONSEQUENCES OF WORK STRESS AND THE LESS RESEARCHED SCHOOLS OF THOUGHT IN YOGA AND YOGA PRACTICES ADMINISTERED TO MANAGE THESE CONSEQUENCES OF WORK STRESS, TO PROVIDE PROMISING AVENUES FOR FURTHER EXAMINATION FOR THE DEVELOPMENT OF THIS RESEARCH FIELD. 2022 5 646 39 DOES YOGA THERAPY REDUCE BLOOD PRESSURE IN PATIENTS WITH HYPERTENSION?: AN INTEGRATIVE REVIEW. THE AIM OF THIS ARTICLE WAS TO PRESENT A EVIDENCE-BASED INTEGRATIVE RESEARCH REVIEW THAT VALIDATES YOGA THERAPY AS AN EFFECTIVE COMPLEMENTARY TREATMENT IN THE MANAGEMENT OF HIGH BLOOD PRESSURE (BP). THE ARTICLE ALSO USES THE THEORETICAL FRAMEWORK OF DR HANS SELYE'S GENERAL ADAPTATION SYNDROME. YOGA RESEARCHERS DEMONSTRATE THAT YOGA WORKS BECAUSE IT MODULATES THE PHYSIOLOGICAL SYSTEM OF THE BODY, SPECIFICALLY ITS EFFECT ON THE HEART RATE. THIS REVIEW IS SIGNIFICANT BECAUSE YOGA PRESENTS AN EFFECTIVE METHOD OF TREATING HYPERTENSION THAT IS NONPHARMACOLOGIC AND THEREFORE THERE ARE NO ADVERSE EFFECTS AND THERE ARE OTHER VALUABLE HEALTH BENEFITS. RESEARCH SUGGESTS THAT STRESS IS A CONTRIBUTING FACTOR TO HIGH BP; HENCE, THE USE OF THE GENERAL ADAPTATION SYNDROME AND THE MOST IMPORTANT ATTRIBUTE OF YOGA, THAT IS, IT IS A PHYSICAL AND MENTAL EXERCISE PROGRAM, THAT IS IN SYNC WITH THE PHILOSOPHY OF HOLISTIC NURSING CARE WHERE ONE TREATS THE WHOLE INDIVIDUAL AND NOT JUST THE DISEASE. THE REVIEW WAS CONDUCTED WITH A SEARCH OF COMPUTERIZED DATABASES SUCH AS OVID, ACADEMIC SEARCH PREMIER, CINAHL, MEDLINE, AND HEALTH SOURCE: NURSING/ACADEMIC EDITION, PSYCHINFO, AS WELL AS RELIABLE WEB SITES SUCH AS THE CDC.GOV, AMONG OTHERS. AN INTEGRATIVE REVIEW SEARCH WAS CONDUCTED, AND 10 STUDIES MET THE INCLUSION CRITERIA. THEY INCLUDE A COMBINATION OF RANDOMIZED CONTROLLED TRIALS, QUASI-EXPERIMENTAL STUDIES, AND PILOT STUDIES. YOGA THERAPY IS A MULTIFUNCTIONAL EXERCISE MODALITY WITH NUMEROUS BENEFITS. NOT ONLY DOES YOGA REDUCE HIGH BP BUT IT HAS ALSO BEEN DEMONSTRATED TO EFFECTIVELY REDUCE BLOOD GLUCOSE LEVEL, CHOLESTEROL LEVEL, AND BODY WEIGHT, MAJOR PROBLEMS AFFECTING THE AMERICAN SOCIETY. THE COMPLETED INTEGRATIVE REVIEW PROVIDES GUIDELINES FOR NURSING IMPLEMENTATION AS A COMPLEMENTARY TREATMENT OF HIGH BP. 2012 6 1894 53 RESEARCH TRENDS IN THE APPLICATION OF YOGA TO HUMAN HEALTH: A DATA SCIENCE APPROACH. YOGA IS AN INTEGRATIVE MIND-BODY SYSTEM OF WELLBEING DEVELOPED IN INDIA SINCE AT LEAST THREE MILLENNIA. YOGA HAS GAINED CONSIDERABLE ATTENTION IN RECENT DECADES, PARTLY DRIVEN BY RECENT RESEARCH AND EVIDENCE ABOUT ITS EFFECTIVENESS. IN THIS WORK, WE EXTRACTED RESEARCH TRENDS ON THE EFFECTS OF YOGA ON HUMAN HEALTH FROM THE US NATIONAL LIBRARY OF MEDICINE'S PUBMED DATABASE (PEER-REVIEWED JOURNAL PAPERS). WE FOUND THAT YOGA RESEARCH SPANS ALL ORGAN SYSTEMS AND SYSTEM-WIDE ISSUES SUCH AS PAIN AND CANCER. RESEARCH ON THE NERVOUS SYSTEM FAR OUTPACES OTHER SYSTEMS, WHICH IS EXPECTED BECAUSE OF THE EFFECTS OF BREATHING AND EXERCISE ON STRESS REDUCTION, WHICH HAS BEEN A MAJOR APPLICATION OF YOGA. THE NEXT CLUSTER OF IMPACT CONCERNS THE MUSCULOSKELETAL SYSTEM AND PAIN (BOTH RELATED TO THE EXERCISE [ASANA] ASPECTS OF YOGA), AS WELL AS CARDIOVASCULAR/ENDOCRINE (ALSO RELATED TO STRESS) AND CANCER. STRESS AND MENTAL HEALTH, PAIN, DIABETES, AND CANCER ARE HEALTH ISSUES FOR WHICH A PERMANENT CURE IS NOT AVAILABLE IN A MAJORITY OF CASES IN MODERN MEDICINE, ALTHOUGH ALLEVIATING TREATMENTS ARE AVAILABLE. THIS HAS PROBABLY FUELED INTEREST IN COMPLEMENTARY APPROACHES SUCH AS YOGA FOR THESE HEALTH ISSUES. RESEARCH TIMELINE SHOWS THAT YOGA-RELATED RESEARCH LARGELY EXPANDED ONLY AFTER THE 2000S. THERE WAS A SPECIFIC UPTICK AFTER 2004. SIMILAR TRENDS ARE SEEN IF WE LOOK AT JUST CLINICAL TRIALS OR RANDOMIZED CONTROL TRIALS (RCTS) OR SYSTEMATIC REVIEWS. THE PERCENTAGE OF TRIALS (CLINICAL AND RCT) AMONG PUBLISHED LITERATURE IS AROUND 10-15 % THIS IS COMPARABLE TO OTHER FIELDS THAT GAINED TRACTION AROUND 2000S (E.G. NON-INVASIVE BRAIN STIMULATION). GEOGRAPHICAL DISTRIBUTION SHOWS THAT 37% OF ALL YOGA RELATED RESEARCH OUTPUT ORIGINATES IN THE USA, 19% FROM INDIA, 13% FROM EUROPE AND 31% FROM THE REST OF THE WORLD. THEREFORE, THE INTEREST IS WIDESPREAD AND GLOBAL. AT LEAST THE UPTICK IN YOGA-RELATED RESEARCH IN THE US POST-2000S CAN BE ATTRIBUTED TO A SUBSTANTIAL JUMP IN FUNDING BETWEEN 1998 AND 2005 FROM US NATIONAL INSTITUTES OF HEALTH'S NATIONAL CENTER FOR COMPLEMENTARY AND INTEGRATIVE HEALTH (NCCIH). WE CAN ONLY SURMISE THAT RESEARCH IN THIS FIELD REACHED A CRITICAL MASS IN LATE-1990S, WHICH INFUSED MORE MONEY INTO THIS FIELD, GENERATING MORE RESEARCH AND CREATING A POSITIVE FEEDBACK LOOP THAT HAS SUSTAINED THE GROWTH SO FAR. WE PROPOSE THAT IN ORDER TO SUSTAIN OR EVEN ACCELERATE FUTURE RESEARCH IN THE AREA, RIGOR AND REPRODUCIBILITY MUST BE ENHANCED IN ADDITION TO PERFORMING MORE RCT AND CLINICAL TRIALS (INCREASING % OF TRIALS TO 20-25% FROM 10-15%). THE FRUITS OF RESEARCH IN THE FIELD HAS TO REACH THE COMMON MAN IN TERMS OF EVIDENCE-BASED SOLUTIONS TO HEALTH ISSUES. WITHOUT THIS, ACCELERATED FUNDING IN DEMOCRACIES SUCH AS INDIA AND THE USA WILL NOT BE REALIZABLE. 2020 7 1083 53 EFFECTS OF YOGA ON STRESS AMONG HEALTHY ADULTS: A SYSTEMATIC REVIEW. BACKGROUND: YOGA WAS RECOMMENDED IN BOTH CLINICAL AND NONCLINICAL POPULATIONS AS THERAPY METHODS. THE DIVERSITY OF YOGA PRACTICE AS A THERAPY METHOD HAS RARELY BEEN DISCUSSED AND IT IS ESSENTIAL TO ADDRESS THE EFFECTS OF YOGA ON STRESS. PRIMARY STUDY OBJECTIVE: THIS ARTICLE AIMS TO INVESTIGATE THE EFFECT OF DIFFERENT TYPES OF YOGA ON STRESS IN HEALTHY POPULATION. ON THE OTHER HAND, THE AUTHORS INTENDED TO FIGURE OUT YOGA EFFECTS ON STRESS SYSTEMATICALLY. METHODS/DESIGN: A SYSTEMATIC LITERATURE REVIEW WAS CONDUCTED TO IDENTIFY ARTICLES THAT ASSESS THE EFFECT OF YOGA AND YOGA-RELATED INTERVENTIONS ON STRESS REDUCTION IN NONCLINICAL POPULATIONS. STUDIES WERE CLASSIFIED ACCORDING TO THE LENGTH OF THE INTERVENTION, YOGA TYPE, AND MEASURES OF OUTCOME. THE STUDIES WERE SELECTED THROUGHOUT LAST 5 YEARS (JANUARY 2014 TO NOVEMBER 2018) BY USING THE KEY SEARCHING TERM YOGA AND STRESS INCORPORATION WITH TENSION AND PRESSURE. THE SELECTION PROCESS FOLLOWED THE PRISMA FLOW DIAGRAM. RESULTS: TOTALLY, 12 ARTICLES ELABORATING ON THE EFFECTS OF YOGA OR YOGA-RELATED INTERVENTIONS ON STRESS MANAGEMENT AND REMISSION WERE INCLUDED IN THE REVIEW. THIS REVIEW INCLUDED VARIOUS TYPES OF YOGA PRACTICE (E.G., HATHA YOGA, BIKRAM YOGA, KUNDALINI YOGA, SUDARSHAN KRIYA YOGA, KRIPALU YOGA, YIN YOGA). A TIME SPECTRUM WAS CONDUCTED FROM 4 WKS TO 28 WKS. THIS REVIEW REVEALED THAT MOST TYPES OF YOGA HAVE POSITIVE EFFECTS ON STRESS REDUCTION IN HEATHY POPULATIONS. CONCLUSION: FURTHER STUDIES ARE RECOMMENDED TO EXAMINE THE LONG-TERM EFFECT OF YOGA AND UNDERLYING PSYCHOLOGICAL MECHANISMS CAUSING STRESS AND MENTAL RESTRAIN. IN ADDITION, IT IS SUGGESTED TO CONSIDER AGE AS A RISK FACTOR AFFECTING THE EFFECT OF YOGA ON STRESS. 2020 8 1337 42 HOW DOES YOGA REDUCE STRESS? A SYSTEMATIC REVIEW OF MECHANISMS OF CHANGE AND GUIDE TO FUTURE INQUIRY. YOGA IS INCREASINGLY USED IN CLINICAL SETTINGS FOR A VARIETY OF MENTAL AND PHYSICAL HEALTH ISSUES, PARTICULARLY STRESS-RELATED ILLNESSES AND CONCERNS, AND HAS DEMONSTRATED PROMISING EFFICACY. YET THE WAYS IN WHICH YOGA REDUCES STRESS REMAIN POORLY UNDERSTOOD. TO EXAMINE THE EMPIRICAL EVIDENCE REGARDING THE MECHANISMS THROUGH WHICH YOGA REDUCES STRESS, WE CONDUCTED A SYSTEMATIC REVIEW OF THE LITERATURE, INCLUDING ANY YOGA INTERVENTION THAT MEASURED STRESS AS A PRIMARY DEPENDENT VARIABLE AND TESTED A MECHANISM OF THE RELATIONSHIP WITH MEDIATION. OUR ELECTRONIC DATABASE SEARCH YIELDED 926 ABSTRACTS, OF WHICH 71 WERE CHOSEN FOR FURTHER INSPECTION AND 5 WERE SELECTED FOR THE FINAL SYSTEMATIC REVIEW. THESE FIVE STUDIES EXAMINED THREE PSYCHOLOGICAL MECHANISMS (POSITIVE AFFECT, MINDFULNESS AND SELF-COMPASSION) AND FOUR BIOLOGICAL MECHANISMS (POSTERIOR HYPOTHALAMUS, INTERLEUKIN-6, C-REACTIVE PROTEIN AND CORTISOL). POSITIVE AFFECT, SELF-COMPASSION, INHIBITION OF THE POSTERIOR HYPOTHALAMUS AND SALIVARY CORTISOL WERE ALL SHOWN TO MEDIATE THE RELATIONSHIP BETWEEN YOGA AND STRESS. IT IS STRIKING THAT THE LITERATURE DESCRIBING POTENTIAL MECHANISMS IS GROWING RAPIDLY, YET ONLY SEVEN MECHANISMS HAVE BEEN EMPIRICALLY EXAMINED; MORE RESEARCH IS NECESSARY. ALSO, FUTURE RESEARCH OUGHT TO INCLUDE MORE RIGOROUS METHODOLOGY, INCLUDING SUFFICIENT POWER, STUDY RANDOMISATION AND APPROPRIATE CONTROL GROUPS. 2015 9 2292 36 THERAPEUTIC EFFECTS OF YOGA FOR CHILDREN: A SYSTEMATIC REVIEW OF THE LITERATURE. PURPOSE: WE COMPLETED A SYSTEMATIC REVIEW OF THE LITERATURE ON THE EFFECT OF YOGA ON QUALITY OF LIFE AND PHYSICAL OUTCOME MEASURES IN THE PEDIATRIC POPULATION. WE EXPLORED VARIOUS DATABASES AND INCLUDED CASE-CONTROL AND PILOT STUDIES, COHORT AND RANDOMIZED CONTROLLED TRIALS THAT EXAMINED YOGA AS AN EXERCISE INTERVENTION FOR CHILDREN. SUMMARY OF KEY POINTS: USING THE SACKETT LEVELS OF EVIDENCE, THIS ARTICLE REVIEWS THE LITERATURE ON YOGA AS A COMPLEMENTARY MIND-BODY MOVEMENT THERAPY. WE ADDRESS THE RESEARCH THROUGH THREE PRACTICE PATTERNS ACCORDING TO THE GUIDE TO PHYSICAL THERAPIST PRACTICE AND PROVIDE CONSIDERATIONS FOR THE INCLUSION OF YOGA INTO CLINICAL PRACTICE. STATEMENT OF CONCLUSIONS AND RECOMMENDATIONS FOR CLINICAL PRACTICE: THE EVIDENCE SHOWS PHYSIOLOGICAL BENEFITS OF YOGA FOR THE PEDIATRIC POPULATION THAT MAY BENEFIT CHILDREN THROUGH THE REHABILITATION PROCESS, BUT LARGER CLINICAL TRIALS, INCLUDING SPECIFIC MEASURES OF QUALITY OF LIFE ARE NECESSARY TO PROVIDE DEFINITIVE EVIDENCE. 2008 10 1937 26 ROLE OF YOGA IN THE TREATMENT OF NEUROTIC DISORDERS: CURRENT STATUS AND FUTURE DIRECTIONS. A LARGE NUMBER OF STUDIES HAVE CONSISTENTLY DEMONSTRATED THE POTENTIAL OF YOGA, NOT ONLY IN THE TREATMENT OF PSYCHIATRIC AND PSYCHOSOMATIC DISORDER BUT ALSO IN PROMOTING POSITIVE PHYSICAL AND MENTAL HEALTH. THIS PAPER REVIEWS VARIOUS STUDIES ON THE TREATMENT OF NEUROSIS WITH TECHNIQUES DERIVED FROM YOGA. A FEW LACUNAE HAVE BEEN IDENTIFIED AND POSSIBLE DIRECTIONS FOR FUTURE RESEARCH ARE OUTLINED. IT IS HOPED THAT RESEARCH ALONG THESE LINES WILL DEVELOP A STANDARDIZED METHOD OF YOGA THERAPY WHICH CAN BE UTILIZED AND INTEGRATED WITHIN THE EXISTING METHODS OF TREATMENT OF NEUROTIC DISORDERS. 1994 11 317 48 AN INTEGRATED METHODOLOGY TO ASSESS COMPLIANCE WITH DELPHI SURVEY KEY COMPONENTS OF YOGA INTERVENTIONS FOR MUSCULOSKELETAL CONDITIONS AS APPLIED IN A SYSTEMATIC REVIEW OF FIBROMYALGIA STUDIES. OBJECTIVE: THE OBJECTIVE OF THIS ARTICLE WAS TO PRESENT A METHODOLOGY INCORPORATING EXISTING GUIDELINES AND TOOLS FOR SYSTEMATIC REVIEWS AND TO EVALUATE THE DELPHI SURVEY 33 KEY COMPONENT RECOMMENDATIONS OF YOGA INTERVENTIONS FOR MUSCULOSKELETAL CONDITIONS AS A TOOL FOR A SYSTEMATIC REVIEW IN FIBROMYALGIA STUDIES. DATA SOURCES: DATABASES SEARCHED INCLUDED PUBMED, OVID MEDLINE, PSYCHINFO, THE COCHRANE LIBRARY, CINAHL, ALT HEALTHWATCH, PEDRO, AND WEB OF SCIENCE. ARTICLE SELECTION: SELECTED WERE ARTICLES PUBLISHED BETWEEN NOVEMBER 14, 2004 AND NOVEMBER 13, 2014, WRITTEN IN ENGLISH, REPORTING ORIGINAL RESEARCH OF YOGA INTERVENTIONS FOR ADULTS WITH FIBROMYALGIA. DATA EXTRACTION AND SYNTHESIS: SIX ARTICLES MET THE INCLUSION CRITERIA, REVEALING THAT THREE YOGA STYLES ("RELAXING" YOGA, YOGA OF AWARENESS, AND HATHA YOGA) HAVE BEEN ASSESSED IN PERSONS WITH FIBROMYALGIA. OVERALL, REPORTING COMPLIANCE WITH THE 33 KEY COMPONENTS RANGED FROM 39.4% TO 84.8%, WITH A MEAN ADHERENCE RATE OF 62.63% +/- 17.74. NONE OF THE AUTHORS USED AN ACCEPTED REPORTING GUIDELINE; SPECIFIC COMPONENTS OF ASANA, PRANAYAMA, RELAXATION, AND MINDFULNESS PRACTICES THAT WOULD HAVE BEEN INCORPORATED INTO THE INTERVENTIONS TESTED WERE IDENTIFIED IN ONLY 33.33% OF THE ARTICLES REVIEWED; AND NONE OF THE ARTICLES INCLUDED DETAILED, REPLICABLE DESCRIPTIONS OF THE INTERVENTIONS. CONCLUSIONS: THIS SYSTEMATIC REVIEW SUPPORTS THE NEED FOR COMPREHENSIVE YOGA RESEARCH GUIDELINES. FINDINGS REVEAL A LACK OF REPORTING OF INTERVENTION DETAILS, THE NEED TO REPORT A DISEASE-SPECIFIC RATIONALE FOR SELECTION OF THE PARTICULAR YOGA STYLE USED FOR THE INTERVENTION, AND THAT A LIMITED NUMBER OF YOGA STYLES HAVE BEEN INVESTIGATED IN PERSONS WITH FIBROMYALGIA. 2016 12 2908 20 [PHYSICAL EXERCISE AND YOGA IN PREVENTION AND TREATMENT OF ADDICTIVE DISEASES]. PREVENTION OF ADDICTIVE DISEASES SHOULD BE COMPLEX AND SYSTEMATIC AND IT SHOULD INCLUDE TRAINING OF SOCIAL SKILLS, DECISION-MAKING SKILLS, FAMILY INTERVENTION, ETC. SIMILARLY, EFFECTIVE TREATMENT IS USUALLY LONG-TERM, SYSTEMATIC AND COMPLEX. PHYSICAL EXERCISE AND YOGA CAN BE USEFUL COMPONENTS OF COMPREHENSIVE PREVENTION AND TREATMENT PROGRAMMES. ON THE OTHER HAND, COMPETITIVE PROFESSIONAL SPORT RATHER INCREASES THE NUMBER OF RISK FACTORS FOR SUBSTANCE-RELATED PROBLEMS. PRACTICAL EXPERIENCE WITH THE USE OF YOGA IN SUBSTANCE DEPENDENT PATIENTS AND PATHOLOGICAL GAMBLES ARE MENTIONED. ONE OF THE ADVANTAGES OF YOGA IS THE INTEGRATION OF PHYSICAL EXERCISE AND RELAXATION. 2005 13 1737 44 PHYSICAL ACTIVITY AND YOGA-BASED APPROACHES FOR PREGNANCY-RELATED LOW BACK AND PELVIC PAIN. OBJECTIVE: TO CONDUCT AN INTEGRATIVE REVIEW TO EVALUATE CURRENT LITERATURE ABOUT NONPHARMACOLOGIC, EASILY ACCESSIBLE MANAGEMENT STRATEGIES FOR PREGNANCY-RELATED LOW BACK AND PELVIC PAIN (PR-LBPP). DATA SOURCES: PUBMED, CINAHL, COCHRANE DATABASE OF SYSTEMATIC REVIEWS. STUDY SELECTION: ORIGINAL RESEARCH ARTICLES WERE CONSIDERED FOR REVIEW IF THEY WERE FULL-LENGTH PUBLICATIONS WRITTEN IN ENGLISH AND PUBLISHED IN PEER-REVIEWED JOURNALS FROM 2005 THROUGH 2015, INCLUDED MEASURES OF PAIN AND SYMPTOMS RELATED TO PR-LBPP, AND EVALUATED TREATMENT MODALITIES THAT USED A PHYSICAL EXERCISE OR YOGA-BASED APPROACH FOR THE DESCRIBED CONDITIONS. DATA EXTRACTION: ELECTRONIC DATABASE SEARCHES YIELDED 1,435 ARTICLES. A TOTAL OF 15 ARTICLES MET ELIGIBILITY CRITERIA FOR FURTHER REVIEW. DATA SYNTHESIS: THESE MODALITIES SHOW PRELIMINARY PROMISE FOR PAIN RELIEF AND OTHER RELATED SYMPTOMS, INCLUDING STRESS AND DEPRESSION. HOWEVER, OUR FINDINGS ALSO INDICATE SEVERAL GAPS IN KNOWLEDGE ABOUT THESE THERAPIES FOR PR-LBPP AND METHODOLOGIC ISSUES WITH THE CURRENT LITERATURE. CONCLUSION: ALTHOUGH ADDITIONAL RESEARCH IS REQUIRED, THE RESULTS OF THIS INTEGRATIVE REVIEW SUGGEST THAT CLINICIANS MAY CONSIDER RECOMMENDING NONPHARMACOLOGIC TREATMENT OPTIONS, SUCH AS GENTLE PHYSICAL ACTIVITY AND YOGA-BASED INTERVENTIONS, FOR PR-LBPP AND RELATED SYMPTOMS. 2017 14 1435 36 IN SEARCH OF YOGA: RESEARCH TRENDS IN A WESTERN MEDICAL DATABASE. CONTEXT: THE PROMOTION OF YOGA PRACTICE AS A PREVENTATIVE AND TREATMENT THERAPY FOR HEALTH OUTCOMES IN THE WESTERN HEMISPHERE IS INCREASING RAPIDLY. AS THE COMMERCIAL SUCCESS OF YOGA BURGEONS IN POPULAR CULTURE, IT IS IMPORTANT TO INVESTIGATE THE TRENDS OF YOGA AS A THERAPEUTIC INTERVENTION IN ACADEMIC LITERATURE. THE FREE-ACCESS SEARCH ENGINE, PUBMED IS A PREEMINENT RESOURCE TO IDENTIFY HEALTH-RELATED RESEARCH ARTICLES PUBLISHED FOR ACADEMICS, HEALTH PRACTITIONERS AND OTHERS. AIMS: TO REPORT THE RECENT YOGA-RELATED PUBLICATIONS IN THE WESTERN HEALTHCARE CONTEXT WITH PARTICULAR INTEREST IN THE SUBJECT AND TYPE OF YOGA TITLES. MATERIALS AND METHODS: A BIBLIOMETRIC ANALYSIS TO DESCRIBE THE ANNUAL TRENDS IN PUBLICATION ON PUBMED FROM JANUARY 1950 TO DECEMBER 2012. RESULTS: THE NUMBER OF YOGA-RELATED TITLES INCLUDED IN THE PUBMED DATABASE IS LIMITED UNTIL A MARKED INCREASE 2000 AND STEADY SURGE SINCE 2007. BIBLIOMETRIC ANALYSIS INDICATES THAT MORE THAN 200 NEW TITLES ARE ADDED PER ANNUM SINCE 2011. SYSTEMATIC REVIEWS AND YOGA TRIALS ARE INCREASING EXPONENTIALLY, INDICATING A POTENTIAL INCREASE IN THE QUALITY OF EVIDENCE. TITLES INCLUDING PAIN MANAGEMENT, STRESS OR ANXIETY, DEPRESSION AND CANCER CONDITIONS ARE HIGHLY CORRELATED WITH YOGA AND HEALTHCARE RESEARCH. CONCLUSIONS: THE PREVALENCE OF YOGA RESEARCH IN WESTERN HEALTHCARE IS INCREASING. THE MARKED INCREASE IN VOLUME INDICATES THE NEED FOR MORE SYSTEMATIC ANALYSIS OF THE LITERATURE IN TERMS OF QUALITY AND RESULTS. 2014 15 1280 29 GENERIC YOGA MODULES FOR CLINICAL AND RESEARCH SETTINGS-NEED OF THE HOUR. YOGA-BASED INTERVENTIONS OFFER SIGNIFICANT PROMISE IN HEALTHCARE. HOWEVER, META-ANALYSES OF VARIOUS YOGA TRIALS SUGGEST THAT COMPARISONS OF TRIALS ARE EITHER NOT POSSIBLE OR DIFFICULT DUE TO HETEROGENEITY IN THERAPEUTIC YOGA INTERVENTIONS. ALSO, IN VIEW OF EMERGING EVIDENCE FOR THE ROLE OF THERAPEUTIC YOGA, IT IS IMPORTANT TO IDENTIFY THE SPECIFICITY AND VALIDITY OF VARIOUS YOGA COMPONENTS BEING USED IN DIFFERENT TRIALS. EFFORTS IN THIS DIRECTION WILL BE FRUITFUL ONLY IF A SYSTEMATIC APPROACH IS ADOPTED TO DEVELOP YOGA PROGRAMS FOR VARIOUS AILMENTS. IN THIS ARTICLE, WE EMPHASIZE THE NEED FOR A "GENERIC YOGA" CONCEPT FOR DESIGNING A THERAPEUTIC YOGA PROGRAM FOR PARTICULAR HEALTH ISSUES, WITH THE OBJECTIVES OF PROMOTING SCIENTIFIC GROWTH OF THERAPEUTIC APPLICATIONS OF YOGA AND WIDESPREAD APPLICATION OF STANDARDIZED THERAPEUTIC YOGA PROGRAMS WITHIN A BIOMEDICAL FRAMEWORK. THIS GENERIC THERAPEUTIC YOGA WILL ESSENTIALLY HIGHLIGHT THE DEVELOPMENT-VALIDATION PROCESS OF UNCOPYRIGHTED YOGA PROGRAMS; THEIR COMPONENTS, BENEFITS, AND POSSIBLE SIDE-EFFECTS; AND REQUIREMENT FOR NEED-BASED MODIFICATIONS. 2021 16 1983 44 SLEEP, COGNITION, AND YOGA. STRESS IS ONE OF THE MAJOR PROBLEMS GLOBALLY, ASSOCIATED WITH POOR SLEEP QUALITY AND COGNITIVE DYSFUNCTION. MODERN SOCIETY IS PLAGUED BY SLEEP DISTURBANCES, EITHER DUE TO PROFESSIONAL DEMANDS OR LIFESTYLE OR BOTH THE ASPECTS, OFTEN LEADING TO REDUCED ALERTNESS AND COMPROMISED MENTAL FUNCTION, BESIDES THE WELL DOCUMENTED ILL EFFECTS OF DISTURBED SLEEP ON PHYSIOLOGICAL FUNCTIONS. THIS PERTINENT ISSUE NEEDS TO BE ADDRESSED. YOGA IS AN ANCIENT INDIAN SCIENCE, PHILOSOPHY AND WAY OF LIFE. RECENTLY, YOGA PRACTICE HAS BECOME INCREASINGLY POPULAR WORLDWIDE. YOGA PRACTICE IS AN ADJUNCT EFFECTIVE FOR STRESS, SLEEP AND ASSOCIATED DISORDERS. THERE ARE LIMITED WELL CONTROLLED PUBLISHED STUDIES CONDUCTED IN THIS AREA. WE REVIEWED THE AVAILABLE LITERATURE INCLUDING THE EFFECT OF MODERN LIFESTYLE IN CHILDREN, ADOLESCENTS, ADULTS AND GERIATRIC POPULATION. THE ROLE OF YOGA AND MEDITATION IN OPTIMIZING SLEEP ARCHITECTURE AND COGNITIVE FUNCTIONS LEADING TO OPTIMAL BRAIN FUNCTIONING IN NORMAL AND DISEASED STATE IS DISCUSSED. WE INCLUDED ARTICLES PUBLISHED IN ENGLISH WITH NO FIXED TIME DURATION FOR LITERATURE SEARCH. LITERATURE WAS SEARCHED MAINLY BY USING PUBMED AND SCIENCE DIRECT SEARCH ENGINES AND CRITICALLY EXAMINED. STUDIES HAVE REVEALED POSITIVE EFFECTS OF YOGA ON SLEEP AND COGNITIVE SKILLS AMONG HEALTHY ADULTS AS WELL AS PATIENTS OF SOME NEUROLOGICAL DISEASES. FURTHER, ON EVALUATING THE PUBLISHED STUDIES, IT IS CONCLUDED THAT SLEEP AND COGNITIVE FUNCTIONS ARE OPTIMIZED BY YOGA PRACTICE, WHICH BRINGS ABOUT CHANGES IN AUTONOMIC FUNCTION, STRUCTURAL CHANGES, CHANGES IN METABOLISM, NEUROCHEMISTRY AND IMPROVED FUNCTIONAL BRAIN NETWORK CONNECTIVITY IN KEY REGIONS OF THE BRAIN. 2021 17 2630 29 YOGA FOR THE TREATMENT OF DEPRESSION: FIVE QUESTIONS TO MOVE THE EVIDENCE-BASE FORWARD. YOGA-BASED PRACTICES, DERIVED FROM ANCIENT EASTERN MIND-BODY PRACTICES, HAVE GROWN IN POPULARITY IN THE WEST OVER THE PAST SEVERAL DECADES. INCREASING EVIDENCE SUPPORTS THE ANTIDEPRESSANT EFFECTS OF YOGA-BASED INTERVENTIONS (YBIS). HOWEVER, DESPITE YOGA'S PROMISE AS A POTENTIAL TREATMENT FOR DEPRESSION, THE LITERATURE TO DATE IS MARKED BY SUBSTANTIAL METHODOLOGICAL LIMITATIONS, WHICH REMAIN A BARRIER TO THE INTEGRATION OF YBIS INTO CONVENTIONAL CLINICAL CARE. WE HIGHLIGHT FIVE KEY AREAS OF STUDY THAT NEED FURTHER INVESTIGATION TO FILL CRUCIAL GAPS IN THE LITERATURE-BASE TO ADVANCE YOGA RESEARCH AND YOGA'S POTENTIAL AS AN EFFECTIVE EVIDENCE-BASED TREATMENT FOR DEPRESSION. 2019 18 406 38 BIOLOGICAL MARKERS FOR THE EFFECTS OF YOGA AS A COMPLEMENTARY AND ALTERNATIVE MEDICINE. FROM THE LAST FEW DECADES, THERE ARE INCREASING INCIDENCES OF DISORDERS LIKE PREMATURE AGING, CARDIOVASCULAR DISEASE, MULTIPLE SCLEROSIS, FIBROMYALGIA, AND ALZHEIMER'S DISEASE IN ADDITION TO MEDICATION, RESEARCHERS HAVE FOUND THAT YOGA, A MIND-BODY THERAPY, CAN BE USED AS AN ALTERNATIVE MEDICINE. YOGA COMBINES SPECIFIC PHYSICAL POSTURES, BREATHING TECHNIQUES, RELAXATION AND MEDITATION THAT IMPROVE MENTAL AND PHYSICAL HEALTH OF THE BODY. THE PURPOSE OF THIS REVIEW IS TO COLLATE THE RESEARCH EVIDENCES CLAIMING HEALTH BENEFITS OF PERFORMING TRADITIONAL YOGIC PRACTICES. WHAT ARE THE BIOLOGICAL AND OTHER RELIABLE INDICATORS TO SUGGEST THAT DOING ASANAS, PRANAYAMA, AND MEDITATION COULD REDUCE OR TREAT WIDE RANGE OF LIFE STYLE DISORDERS ARE DISCUSSED. IMPORTANTLY, THESE INDICATORS ARE OTHERWISE USED TO ASSESS THE SEVERITY OF DISORDERS. IN MANY OF THE STUDY IT HAS BEEN SHOWN THAT YOGA IMPROVES THE REDOX HEALTH OF BODY WHOSE IMBALANCE HAS BEEN WELL PROVEN TO CAUSE MANY HEALTH COMPLICATIONS. THE IMPACT OF YOGA ON NEURODEGENERATIVE DISEASES HAVE REVEALED THAT IT REVERSES MEMORY LOSS, REDUCE ANXIETY, DEPRESSION AND STRESS, THE BIOLOGICAL INDICATORS OF DISEASE. HOWEVER, MOST STUDIES HAVE SEVERAL LIMITATIONS AND THEREFORE FURTHER RESEARCH INTO YOGA IS NEEDED TO VALIDATE THESE FINDINGS. 2019 19 1084 37 EFFECTS OF YOGA ON STRESS MANAGEMENT IN HEALTHY ADULTS: A SYSTEMATIC REVIEW. OBJECTIVE: THIS ARTICLE REPORTS A SYSTEMATIC REVIEW AND CRITICAL APPRAISAL OF THE EFFECT OF YOGA ON STRESS MANAGEMENT IN HEALTHY ADULTS. METHODS: A SYSTEMATIC LITERATURE SEARCH WAS PERFORMED TO IDENTIFY RANDOMIZED CONTROLLED TRIALS (RCTS) AND CLINICAL CONTROLLED TRIALS (CCTS) THAT ASSESSED THE EFFECTS OF YOGA ON STRESS MANAGEMENT IN HEALTHY ADULTS. SELECTED STUDIES WERE CLASSIFIED ACCORDING TO THE TYPES OF INTERVENTION, DURATION, OUTCOME MEASURES, AND RESULTS. THEY WERE ALSO QUALITATIVELY ASSESSED BASED ON PUBLIC HEALTH RESEARCH, EDUCATION AND DEVELOPMENT STANDARDS. RESULTS: THE SYSTEMATIC REVIEW WAS BASED ON EIGHT RCTS AND CCTS THAT INDICATED A POSITIVE EFFECT OF YOGA IN REDUCING STRESS LEVELS OR STRESS SYMPTOMS. HOWEVER, MOST OF THE STUDIES HAD METHODOLOGICAL PROBLEMS IN THAT THE INTERVENTION DURATION WAS SHORT AND LIMITED FOLLOW-UP DATA WAS AVAILABLE. CONCLUSION: THIS REVIEW REVEALED POSITIVE EFFECTS OF YOGA ON STRESS REDUCTION IN HEALTHY ADULT POPULATIONS. HOWEVER, THE RESULT SHOULD BE INTERPRETED WITH CAUTION DUE TO THE SMALL NUMBER OF STUDIES AND THE ASSOCIATED METHODOLOGICAL PROBLEMS. FURTHER STUDIES TO ASCERTAIN YOGA'S LONG-TERM EFFECTS AND THE UNDERLYING BIOLOGICAL MECHANISMS LEADING TO ITS STRESS REDUCTION EFFECT SHOULD BE CONDUCTED. 2011 20 2445 25 YOGA AND SUBSTANCE USE DISORDERS: A NARRATIVE REVIEW. YOGA HAS BEEN UTILIZED FOR PROMOTION OF HEALTH AND ALLEVIATING DISTRESS. IT HAS ALSO BEEN USED AS A THERAPEUTIC MEASURE IN THE FIELD OF MENTAL HEALTH, INCLUDING SUBSTANCE USE DISORDERS. THIS NARRATIVE REVIEW DISCUSSES THE LITERATURE PERTAINING TO USE OF YOGA IN THE TREATMENT OF SUBSTANCE USE DISORDERS. THE EVIDENCE BASE ESPECIALLY WITH REGARDS TO RANDOMIZED TRIALS IS PRESENTED. THE POSSIBLE MECHANISMS HOW YOGA MIGHT BE HELPFUL IN THE TREATMENT OF SUBSTANCE USE DISORDERS ARE EXPLORED. SUBSEQUENTLY, IMPLICATIONS OF YOGA IN CLINICAL PRACTICE ARE ELABORATED, FOLLOWED BY EXAMINATION OF THE ISSUES IN INTERPRETATION OF THE LITERATURE OF PUBLISHED YOGA RELATED STUDIES. 2017