British Journal of Sports Medicine最新文献

{"title":"Long-term follow up from the Harvard Alumni Health Study: collegiate sport participation in males is associated with higher physical activity throughout midlife.","authors":"Meagan M Wasfy,Uzair Tahamid Siam,Sarah K Gustus,Kevin S Boyd,Adam S Tenforde,Howard Sesso,I-Min Lee","doi":"10.1136/bjsports-2024-109255","DOIUrl":"https://doi.org/10.1136/bjsports-2024-109255","url":null,"abstract":"OBJECTIVETo compare physical activity (PA) over midlife between (1) former collegiate athletes and non-athletes and (2) among athletes in different sports.METHODSThe Harvard Alumni Health Study (HAHS) is a prospective cohort study of male undergraduates who completed serial questionnaires regarding PA and health status between 1962 and 1993. PA was categorised by intensity (<3 METs, light; 3 to <6 METs, moderate; ≥6 METs, vigorous), and energy expenditure (kilocalories (kcal)/week) was estimated at each intensity and in total. HAHS data were merged with university athletics records. Mixed linear models, adjusted for graduating class, survey date, age and smoking, were compared with PA between relevant groups.RESULTS22 201 participants completed 38 448 surveys when 30-65 years old, of which 1533 (6.9%) participants were athletes completing 2733 (7.1%) surveys. The age at the first survey was 46.8±9.7 years. Athletes were more active than non-athletes throughout midlife (p<0.001), from age 35 (total PA: +856.8 [704.6 to 1009.1] kcal/week) to age 65 (+524.2 [359.1 to 689.4] kcal/week). Total PA levels converged with older age, and differences resulted from more vigorous intensity PA in athletes. Multisport collegiate athletes were more active than single sport athletes (+544.6 [196.5 to 892.7] kcal/week, p=0.002). Compared with other athletes, PA in midlife was higher in tennis (+750.1 [223.9 to 1276.2] kcal/week, p=0.005) and basketball (+373.6 [28.7 to 718.5] kcal/week, p=0.03) players.CONCLUSIONCollegiate sport participation, particularly participation in multiple sports, is associated with higher midlife PA levels in males. These results underscore the importance of early life sport exposure in supporting health-promoting levels of later life PA.","PeriodicalId":9276,"journal":{"name":"British Journal of Sports Medicine","volume":"10 1","pages":""},"PeriodicalIF":18.4,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143062059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"'Post-rehabilitation phase' in professional football: are we optimising player support after return to play?","authors":"Ben Dixon, Jill Alexander, Damian Harper","doi":"10.1136/bjsports-2024-109458","DOIUrl":"https://doi.org/10.1136/bjsports-2024-109458","url":null,"abstract":"","PeriodicalId":9276,"journal":{"name":"British Journal of Sports Medicine","volume":" ","pages":""},"PeriodicalIF":11.6,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143063927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"‘I wish I had been better prepared’: a mixed-methods study of psychological reactions, perceptions and opinions of cardiovascular preparticipation screening among young competitive athletes","authors":"Nicholas Grubic, Matthew Fraser, Meghan K Ford, Braeden Hill, Laura E Mantella, Valentina Mihajlovic, Ryan Bennett, Rohaan Syan, Anhadh Law, Jane S Thornton, Amer M Johri","doi":"10.1136/bjsports-2024-108921","DOIUrl":"https://doi.org/10.1136/bjsports-2024-108921","url":null,"abstract":"Objective To evaluate the psychological reactions, perceptions and opinions of cardiovascular preparticipation screening (PPS) among young competitive athletes. Methods This convergent parallel mixed-methods study recruited 222 athletes (mean age: 18.7 years) who underwent PPS at a Canadian university. All athletes completed a cardiovascular history questionnaire, and a subgroup (n=165) additionally obtained an ECG and physical exam. On registering for PPS, athletes completed a psychological impact survey. Survey items were measured on a 5-point scale, ranging from −2 (strongly disagree) to 2 (strongly agree) and reported as means. After completing PPS, 18 athletes participated in focus groups or interviews to explore screening experiences. Qualitative data were analysed using reflexive thematic analysis, following an inductive and critical realist approach. Results Athletes reported minimal symptoms of anxiety (−1.29), stress (−1.41) or worry (−1.12) concerning their participation in PPS and agreed that screening was beneficial for their safety (1.25). Psychological symptoms were higher in athletes who reported cardiovascular symptoms or a family history than those who did not. Athletes required to undergo an ECG and physical exam were less anxious, stressed and worried about PPS but more interested in learning about their results than those screened with only a history questionnaire. Three themes described athletes’ responses to PPS: (1) importance of communication and service navigation; (2) distress surrounding the uncertainty of results and (3) screening as a non-disruptive and essential part of ‘being an athlete’. Conclusion The PPS process does not lead to excessive distress among young competitive athletes before, during or after screening. Athletes identified solutions to enhance the PPS experience, including tailored educational resources and an integrated support system to manage psychological symptoms. Data are available on reasonable request. Quantitative data may be made available on reasonable request to the corresponding author. Due to privacy and confidentiality reasons, focus group and individual interview transcripts or qualitative data analysis files will not be shared.","PeriodicalId":9276,"journal":{"name":"British Journal of Sports Medicine","volume":"24 1","pages":""},"PeriodicalIF":18.4,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143054891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The association between Guardian Cap use during practices and sport-related concussion risk in high school American football players","authors":"Erin Hammer, Sam Mosiman, Mikel R Joachim, Ethan Taylor, Adam Cordum, M Alison Brooks, Timothy McGuine","doi":"10.1136/bjsports-2024-108945","DOIUrl":"https://doi.org/10.1136/bjsports-2024-108945","url":null,"abstract":"Objective Guardian Caps (GCs) have been widely implemented at all levels of American football participation based on laboratory evidence that they may reduce head impact forces. The purpose of this study was to determine if GC use during practice was associated with a lower risk of sport-related concussion (SRC) during practices and games among high school football players. Methods Data were collected on 2610 athletes from 41 Wisconsin schools that self-selected into GC or Non-GC cohorts. Athletic trainers recorded practice and game exposures and SRCs through the 2023 season. Generalised linear mixed models were built to determine the effect of GC utilisation on SRC rates, accounting for school and player exposures. Results In the total cohort (Non-GC n=1188 (45.5%); GC n=1422 (54.5%)), 180 athletes (6.9%) sustained SRCs. 64 SRCs occurred during practice (GC n=33 (51.6%); Non-GC n=31 (48.4%)). GC use was not associated with a decreased risk of SRC during practice in the univariable analysis (relative risk (RR)=1.04, 95% CI 0.58 to 1.86, p=0.90) or after accounting for previous SRC within the last year (RR 1.01, 95% CI 0.57 to 1.79, p=0.97). No players of either cohort wore GCs during games. There were 116 SRCs sustained during games (GC n=68 (58.6%); Non-GC n=48 (41.4%)). GC use during practice was not associated with the risk of SRC during games in the univariable analysis (RR 1.13, 95% CI 0.72 to 1.78, p=0.60) or after accounting for previous SRC within the last year (RR 1.13, 95% CI 0.71 to 1.78, p=0.61). Conclusion GC use during practice in high school American football players was not associated with a decreased risk of sustaining SRC in practice or games. Data are available upon reasonable request.","PeriodicalId":9276,"journal":{"name":"British Journal of Sports Medicine","volume":"16 1","pages":""},"PeriodicalIF":18.4,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143054897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ReFORM synthesis of the 6th International Consensus Statement on Concussion in Sport","authors":"Géraldine Martens, Jon S Patricios, Kathryn J Schneider, Gavin A Davis, Cheri Blauwet, Nina Feddermann-Demont, Camille Tooth, Aurore Thibaut, Jean-François Kaux, Suzanne Leclerc","doi":"10.1136/bjsports-2024-109188","DOIUrl":"https://doi.org/10.1136/bjsports-2024-109188","url":null,"abstract":"The sixth International Conference on Concussion in Sport took place 27–30 October 2022 in Amsterdam, Netherlands. It followed the fifth International Conference held in Berlin, Germany in October 2016, and aimed to provide updated recommendations regarding the prevention and management of concussions in sport based on the highest level of scientific evidence, the result of several systematic reviews of the literature.1–10 This editorial summarises key processes and recommendations from the Consensus Statement on Concussion in Sport.11 The preparation of these recommendations took several years, followed a robust methodology12 and was presented in a structured format. The organising committee was composed of representatives from international sports federations (Fédération Internationale de l'Automobile, Fédération Equestre Internationale, Fédération Internationale de Football Association, International Ice Hockey Federation, and World Rugby) and the International Olympic Committee. This organising committee proposed Co-Chairs of the Scientific Committee, who are also part of the Concussion in Sport Group (CISG). The Scientific Committee then invited lead authors and suggested coauthors (these recommendations were reviewed and amended by the lead authors) independent of the organising committee who had no input to the scientific process. A modified Delphi technique was used to devise the initial 12 questions that informed the Berlin International Conference on Concussion in Sport which were subsequently revised to 10 questions for the Amsterdam consensus.12 13 Ten themes around concussion were identified and evolved from previous iterations of the statement: prevention strategies, acute evaluation, office assessment, targeted interventions, rest and exercise, clinical recovery, evaluation of persisting symptoms, role of emerging technologies, retirement from sports and long-term effects. For each identified theme, the author group conducted a systematic review following Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, with meta-analyses whenever possible, and then developed recommendations based on the results of these reviews.1–10 These …","PeriodicalId":9276,"journal":{"name":"British Journal of Sports Medicine","volume":"87 1","pages":""},"PeriodicalIF":18.4,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143027187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Volunteer-ran in-school postpartum physical activity programme for adolescent mothers: initial steps towards sustainability","authors":"Rebecca M Pallister, Brooke J Hebert, Taniya S Nagpal","doi":"10.1136/bjsports-2024-109509","DOIUrl":"https://doi.org/10.1136/bjsports-2024-109509","url":null,"abstract":"Postpartum physical activity has several health benefits for both the mother and newborn including reducing the risk for maternal depression and improved parent–child bonding.1 An underserved population that may have unique barriers to being physically active are adolescent postpartum individuals who face the additional challenges of stigma of being a young mother, lower social support and socioeconomic status and completing their high school education.2 3 Adolescent or teenage mothers are at a significantly higher risk of prenatal and postpartum complications than adults, including depression, preterm birth and low birth weight.4 Notably though, adolescent mothers who have higher perceived social support are more likely to complete their education and have improved maternal and child outcomes such as better bonding and reduced mental health complications.5 Group-based physical activity can offer social support to new mothers, and it may be possible to deliver this through schools.6 Braemar School in Edmonton, Canada, provides high school education to pregnant and postpartum individuals aged 14–20 years.7 In collaboration with the Terra Centre, Braemar School offers high school credits to young mothers with childcare services onsite. Included in their curriculum is the option to engage in a flexible physical education programme. The flexible approach to the …","PeriodicalId":9276,"journal":{"name":"British Journal of Sports Medicine","volume":"74 1","pages":""},"PeriodicalIF":18.4,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143020754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"WHO guidelines on waist circumference and physical activity and their joint association with cancer risk","authors":"Patricia Bohmann, Michael J Stein, Amina Amadou, Hansjörg Baurecht, Béatrice Fervers, Emma Fontvieille, Heinz Freisling, Christine Friedenreich, Julian Konzok, Laia Peruchet-Noray, Michael F Leitzmann, Anja M Sedlmeier, Andrea Weber","doi":"10.1136/bjsports-2024-108708","DOIUrl":"https://doi.org/10.1136/bjsports-2024-108708","url":null,"abstract":"Objective Low body fat and high physical activity levels are key lifestyle factors in cancer prevention, but the interplay of abdominal obesity and physical activity on cancer risk remains unknown. We explored individual and joint associations of waist circumference and physical activity with cancer risk. Methods Using UK Biobank data (n=315 457), we categorised individuals according to WHO guideline thresholds for waist circumference and self-reported physical activity levels. Multivariable-adjusted Cox regression was used to estimate HRs and 95% CIs of total cancer. The reference group comprised individuals with recommended levels of waist circumference (<88 cm for women and <102 cm for men) and physical activity (>10 metabolic equivalent of task hours/week). Furthermore, we estimated the proportion of cancers attributable to abdominal obesity and insufficient physical activity. Results During a median follow-up period of 11 years (3 321 486 person-years), 29 710 participants developed any type of cancer. Participants not meeting the WHO guideline on waist circumference had increased cancer risk, even when sufficiently physically active according to the WHO (HR 1.11, 95% CI 1.08 to 1.15). Similarly, individuals not achieving the WHO guideline for physical activity showed an elevated risk, even if they were abdominally lean (HR 1.04, 95% CI 1.01 to 1.07). Not adhering to either guideline yielded the strongest increase in risk (HR 1.15, 95% CI 1.11 to 1.19). We estimated that abdominal obesity coupled with insufficient physical activity could account for 2.0% of UK Biobank cancer cases. Conclusion Adherence to both WHO guidelines for waist circumference and physical activity is essential for cancer prevention; meeting just one of these guidelines is insufficient. Data may be obtained from a third party and are not publicly available. The data that support the findings of this study are available from the UK Biobank but restrictions apply to the availability of these data, which were used under license for the current study, and so are not publicly available. Researchers will need to apply to access the UK Biobank database at the following link: <https://www.ukbiobank.ac.uk/enable-your-research/apply-for-access>.","PeriodicalId":9276,"journal":{"name":"British Journal of Sports Medicine","volume":"32 1","pages":""},"PeriodicalIF":18.4,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143020758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"There and back again: navigating disordered eating and body dysmorphia as a pre-professional ballet dancer","authors":"David Donnelly","doi":"10.1136/bjsports-2024-109576","DOIUrl":"https://doi.org/10.1136/bjsports-2024-109576","url":null,"abstract":"My relationship with food was never complicated growing up. My grandma always teased at dinners that I had a ‘hollow leg’ for all that I ate; I was always full of energy, and I could never sit still. A family friend and former dancer recommended ballet as the foundational movement language for dance, and within 10 years, I was awarded a scholarship to a ballet school in the UK at the age of 16. Vocational ballet school was a dramatic shift from the world of dance training I knew. I found myself homesick, far away from the big American family I loved, and one of 17 young men in the year, rather than the only boy in my local school. I struggled to adapt to the pressure I’d put on myself to be successful. At school, I was never personally told to watch my weight, but the heightened, competitive environment of the final year of school created a sensitive environment for all the students. I had a classmate who everyone said was my twin—we were both gifted with high insteps, flexible ankles and hyperextended knees. Before auditions for professional companies, our teacher told him he wouldn’t get a job at his present size—purely conjecture and just his opinion. Since everyone said we were twins, I took that to mean I needed to be thinner as well. What began as ignoring my post-meal sugar cravings started to snowball into very unhealthy habits and a mental battle with my body image. Breakfast was a banana and black coffee; lunch was half a turkey sandwich on thin white bread with more cucumber than turkey; an after-school snack was more coffee and a small pot of yoghurt; and dinner was always 100 g of overcooked chicken or fish, with a portion of …","PeriodicalId":9276,"journal":{"name":"British Journal of Sports Medicine","volume":"22 1","pages":""},"PeriodicalIF":18.4,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143020757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Associations of objectively measured physical activity and sedentary time with all-cause mortality in Japanese older adults: a 10-year prospective study","authors":"Tao Chen, Sanmei Chen, Takanori Honda, Hiro Kishimoto, Yu Nofuji, Kenji Narazaki","doi":"10.1136/bjsports-2024-108258","DOIUrl":"https://doi.org/10.1136/bjsports-2024-108258","url":null,"abstract":"Objective To examine the associations of accelerometer-measured physical activity and sedentary time with all-cause mortality in older Japanese adults. Methods A total of 1723 independent Japanese adults aged ≥65 years were followed from 2011 to 2021. Moderate-to-vigorous physical activity (MVPA), light physical activity (LPA) and sedentary time were measured using a triaxial accelerometer secured to participants’ waists. Results Over a median follow-up of 9.9 years, 336 deaths were recorded. When examined as tertiles, higher MVPA (both ≥10 and <10 min bouts) and LPA were associated with a lower mortality risk. Additional adjustment for MVPA attenuated the associations of LPA, but the HRs in the highest tertile remained significant. Longer sedentary time was significantly associated with an increased mortality risk, but not after adjusting for MVPA. In spline analyses, a linear dose–response association with all-cause mortality was observed for LPA, while the HRs declined progressively with higher levels of MVPA until approximately 80 min/day, beyond which they levelled out. Replacing 10 min/day of sedentary time with MVPA but not LPA was associated with a 12% lower risk of morality (HR 0.88; 95% CI 0.83 to 0.93); the HR for replacing 10 min/day LPA with MVPA was 0.89 (95% CI 0.84 to 0.95). These results were materially unchanged when excluding deaths within the first 5 years of follow-up. Conclusion Physical activity, regardless of intensity, was associated with a lower all-cause mortality risk among older Japanese adults. Replacing sedentary time or LPA with MVPA was associated with a lower mortality risk. The mortality benefit started from a low MVPA dose and additional benefits were associated with higher doses. Data are available on reasonable request. The datasets used and/or analysed during this study are available from the corresponding author on reasonable request.","PeriodicalId":9276,"journal":{"name":"British Journal of Sports Medicine","volume":"14 1","pages":""},"PeriodicalIF":18.4,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143020755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Developing inclusive policy and guidelines in sport: a call to action for sport governing bodies and individuals to support neurodivergent athletes","authors":"Caragh McMurtry, Charles Freeman, Joanna Perkins, Gráinne M Donnelly, Isabel S Moore","doi":"10.1136/bjsports-2024-108989","DOIUrl":"https://doi.org/10.1136/bjsports-2024-108989","url":null,"abstract":"Neurodiversity refers to the natural variation in cognition (brain function and processing), social learning and behavioural traits; whereas, neurodivergence refers to neurological conditions and is an umbrella term that includes autism spectrum disorder, attention deficit hyperactivity disorder (ADHD), and learning and coordination disorders, such as dyslexia and dyspraxia.1 Individuals are more likely to have multiple related neurodivergent conditions (co-occurrences) than they are to only present with one condition (see graphical overview of literature on co-occurrences).2 Neurodivergent conditions are often undiagnosed3 and or misdiagnosed4 due to their co-occurrence with other conditions, a general lack of awareness (eg, in clinicians), socioeconomic status (eg, mother education level), health access constraints (eg, medical waiting lists) and adaptive behaviours (eg, masking) that neurodivergent individuals use to blend in and be more accepted in society .5 In many countries, equality laws mean disability is a protected characteristic, like sex and religion. Neurodivergent conditions fall under the disability umbrella, even though individuals may not consider themselves to have a disability. Therefore, employers, such as sport governing bodies and clubs, have a responsibility to make reasonable adjustments to ensure their employees (eg, athletes, coaches) have an inclusive and accessible workplace (eg, designated quiet rooms with dimmable lighting). To help sport governing bodies and clubs build inclusive environments for neurodivergent individuals, policies and guidelines can be created and implemented with equity in mind. Equity is about providing specific resources and or opportunities to different people to reach an equal outcome. Dependent on the …","PeriodicalId":9276,"journal":{"name":"British Journal of Sports Medicine","volume":"136 1","pages":""},"PeriodicalIF":18.4,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143020756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}