{"title":"Is Biobanding the Future of Youth Sport Participation?","authors":"Nicole J Chimera, Bareket Falk, Panagiota Klentrou, Phillip Sullivan","doi":"10.1123/pes.2024-0021","DOIUrl":"10.1123/pes.2024-0021","url":null,"abstract":"<p><p>Traditionally, sports participation has been based on the chronological age of the individual with year of birth determining participation grouping. However, grouping by chronological age can result in individuals who are nearly a full year different in age competing within the same age group. Moreover, during the pubertal years, age grouping may provide physical (size) advantage to early maturers and disadvantage to late maturers. These advantages/disadvantages could impact talent selection, psychosocial aspects of sport participation, technical and tactical skill development, competitiveness, and injury risk. Biobanding is an alternative method for determining sport participation categorization and uses factors of growth and/or maturation, rather than traditional chronological age, for grouping athletes. Implementation of biobanding in sports may be advantageous to both early and late-maturing athlete development.</p>","PeriodicalId":49712,"journal":{"name":"Pediatric Exercise Science","volume":" ","pages":"181-191"},"PeriodicalIF":1.3,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142114120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Development of Fast, Fit, and Fatigue Resistant Youth Field and Court Sport Athletes: A Narrative Review.","authors":"Joey C Eisenmann, Jason Hettler, Kevin Till","doi":"10.1123/pes.2024-0015","DOIUrl":"10.1123/pes.2024-0015","url":null,"abstract":"<p><p>Humans are fascinated by the bipedal locomotor capacities at both ends of the athletic spectrum-sprinting speed and endurance. Some of the more popular field (eg, soccer, rugby, and lacrosse) and court (eg, basketball, tennis, and netball) sports utilize mixed energy systems requiring an interplay of both maximal sprinting speed (MSS) and maximal aerobic speed (MAS) to meet the high-intensity running demands of varying frequency, duration, intensity, and recovery. Recently, these locomotor capacities have been considered in combination to produce what is called the anaerobic speed reserve (ASR) as part of the locomotor profile concept (MSS, MAS, and ASR). The purpose of this narrative review is to (1) provide an overview of the locomotor profile concept; (2) review the assessment methods for estimating MSS, MAS, and ASR; (3) examine the age-, sex-, and maturity-associated variations in MSS, MAS, and ASR; (4) examine the trainability of MSS, MAS, and ASR in youth athletes; and (5) conclude with the practical applications using principles of long-term athlete development for training the locomotor profile in youth field and court sport athletes. Based on the available data in young male athletes, MSS, MAS, and ASR generally increase with age and across maturity groups and are trainable. Overall, decisions on training need to consider the sport demands, current fitness and maturity status, and targeted training adaptation sought.</p>","PeriodicalId":49712,"journal":{"name":"Pediatric Exercise Science","volume":" ","pages":"211-223"},"PeriodicalIF":1.3,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142047417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Donya Kouchi, Mansour Sahebozamani, Abdolhamid Daneshjoo, Sugalya Amatachaya, Mohammad Alimoradi, Mojtaba Iranmanesh
{"title":"Effects of an 8-Week Corrective Dance Exercises Intervention on Thoracic Hyperkyphosis, Scapular Position, Respiratory Function, and Happiness in Girls Aged 10-12 Years.","authors":"Donya Kouchi, Mansour Sahebozamani, Abdolhamid Daneshjoo, Sugalya Amatachaya, Mohammad Alimoradi, Mojtaba Iranmanesh","doi":"10.1123/pes.2023-0169","DOIUrl":"10.1123/pes.2023-0169","url":null,"abstract":"<p><strong>Purpose: </strong>This study examined the impact of an 8-week corrective dance intervention on thoracic hyperkyphosis, scapular position, breathing, and happiness in girls aged 10-12 years.</p><p><strong>Methods: </strong>Sixty participants were randomly assigned to either an experimental (EX) or control (CO) group. The intervention involved rhythmic and corrective movements conducted 3 times a week. Measurements were taken before and after the intervention for thoracic hyperkyphosis angle, scapular position, lung function, and happiness levels.</p><p><strong>Results: </strong>EX showed greater improvements (P = .001) than CO for the decrement of thoracic hyperkyphosis angle (48.20-42.80°) than in CO (47.66°-46.59°), and scapular position improved more (P = .003) in EX (1.48°-1.20°) than in CO (1.44°-1.42°). Forced vital capacity (P = .001) and forced expiratory volume in 1 second (P = .001) significantly increased in EX (FVC: 2.65-3.40 L; FEV1: 2.32-2.74 L), while they remained stable in CO. Happiness levels significantly improved (P = .001) in EX (42.20-49.79) and slightly decreased in CO (41.80-40.15).</p><p><strong>Conclusions: </strong>The 8-week dance program improved posture, scapular position, breathing, and happiness in girls aged 10-12 years. It enhances physical health, emotional well-being, and social skills in children and adolescents.</p>","PeriodicalId":49712,"journal":{"name":"Pediatric Exercise Science","volume":" ","pages":"252-259"},"PeriodicalIF":1.3,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142047416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Manel Kerkeni, Khaled Trabelsi, Mohamed Kerkeni, Achraf Ammar, Abdul Rashid Aziz, Jordan M Glenn, Wassim Moalla, Hamdi Chtourou, Haitham Jahrami
{"title":"Impact of Soccer-Based Training Interventions on Anthropometric Measures Among Children and Adolescents With Overweight/Obesity: A Systematic Review, Meta-Analysis, and Assessment of Certainty of Evidence.","authors":"Manel Kerkeni, Khaled Trabelsi, Mohamed Kerkeni, Achraf Ammar, Abdul Rashid Aziz, Jordan M Glenn, Wassim Moalla, Hamdi Chtourou, Haitham Jahrami","doi":"10.1123/pes.2024-0028","DOIUrl":"10.1123/pes.2024-0028","url":null,"abstract":"<p><strong>Purpose: </strong>This systematic review and meta-analysis aimed to systematically examine and summarize recent evidence on the effects of soccer-based training (SBT) on anthropometric measures in children and adolescents with overweight/obesity.</p><p><strong>Methods: </strong>Adhering to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis 2020 guidelines, a thorough literature search across 7 electronic databases was conducted on October 11, 2023. The studies' methodological quality was evaluated using the QualSyst tool, followed by conducting a meta-analysis with a random-effects model, and the certainty of evidence was assessed.</p><p><strong>Results: </strong>Six studies were included, with 4 studies of strong methodological quality and 2 studies of moderate methodological quality. The results of the meta-analysis revealed SBT decreases fat mass percentage (effect size [ES] = 0.47 [small]; P = .002), with no significant effect of SBT on body mass index (ES = 0.180 [small]; P = .275), body mass (ES = 0.183 [trivial]; P = .212), fat-free mass (ES = 0.074 [trivial]; P = .635), or waist circumference (ES = 0.358 [small]; P = .053). The certainty of evidence was moderate for all outcomes.</p><p><strong>Conclusions: </strong>SBT appears to decrease fat mass percentage, without affecting body mass, body mass index, fat-free mass, or waist circumference in obese/overweight children and adolescents. These findings require further investigation given the moderate certainty of evidence.</p><p><strong>Registration: </strong>The protocol of this review was registered in the Open Science Framework database (https://doi.org/10.17605/OSF.IO/8P4V2).</p>","PeriodicalId":49712,"journal":{"name":"Pediatric Exercise Science","volume":" ","pages":"311-320"},"PeriodicalIF":1.3,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142019329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Michael Keiner, Sebastian Möck, Hagen Hartmann, Klaus Wirth
{"title":"Optimal Drop Heights for Determining Reactive Strength Performance in Youth-Is 1 Drop Height Sufficient to Generate Trustworthy Conclusions for Training Practice?","authors":"Michael Keiner, Sebastian Möck, Hagen Hartmann, Klaus Wirth","doi":"10.1123/pes.2024-0006","DOIUrl":"10.1123/pes.2024-0006","url":null,"abstract":"<p><p>This study critically examines the suitability of using a single drop height to assess the reaction strength index in trained and active participants, a key component of athletic performance. Using a cross-sectional design, 377 trained (n = 163) and active (n = 214) participants aged 14-18 years performing drop jumps from 4 different heights (24, 32, 40, and 48 cm) were studied. The primary aim was to explore the individual differences in reaction strength index at these heights and to assess whether a single height can reliably represent stretch-shortening cycle capabilities. While the repeated measures analysis of variance did not reveal any significant differences, the Bland-Altmann analysis revealed significant individual discrepancies between the performance of the drop heights, resulting in a mean absolute error of 32.1 and a mean absolute percentage error of 20.6%. These results strongly suggest that a single drop height is not sufficient to determine performance in the stretch-shortening cycle. This has important practical implications as it can lead to underestimates of performance trends. The study advocates the inclusion of a range of drop heights in routine testing to accurately measure reactive power and thus improve the effectiveness of individualized training programs for young athletes/active youth.</p>","PeriodicalId":49712,"journal":{"name":"Pediatric Exercise Science","volume":" ","pages":"233-239"},"PeriodicalIF":1.3,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141908121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Matthew Bourke, Brianne A Bruijns, Kendall Saravanamuttoo, Leigh M Vanderloo, Patricia Tucker
{"title":"Efficacy of a Physical Activity e-Learning Course Delivered to Early Childhood Educators on Preschoolers' Physical Activity and Sedentary Behaviors: A Cluster Randomized Controlled Trial.","authors":"Matthew Bourke, Brianne A Bruijns, Kendall Saravanamuttoo, Leigh M Vanderloo, Patricia Tucker","doi":"10.1123/pes.2023-0180","DOIUrl":"10.1123/pes.2023-0180","url":null,"abstract":"<p><strong>Purpose: </strong>This study examined the effectiveness of an early childhood educator (ECE)-focused physical activity e-Learning course on children's physical activity and sedentary time in childcare.</p><p><strong>Methods: </strong>A cluster randomized controlled trial was conducted in 12 childcare centers in London, Ontario, Canada. A total of 145 preschoolers and 42 ECEs participated in this study. ECEs in the intervention condition completed a 5-hour e-Learning course related to physical activity. Outcomes were preschoolers' minutes of moderate- to vigorous-intensity physical activity, light-intensity physical activity, and sedentary time assessed using accelerometers.</p><p><strong>Results: </strong>The intervention did not have a significant effect on moderate- to vigorous-intensity physical activity (d < 0.01, P = .984), light-intensity physical activity (d = -0.17, P = .386), or sedentary time (d = 0.07, P = .717) from baseline to postintervention. There was also no significant intervention effect on moderate- to vigorous-intensity physical activity (d = 0.27, P = .260), light-intensity physical activity (d = -0.08, P = .740), or sedentary time (d = -0.15, P = .520) from baseline to follow-up.</p><p><strong>Conclusions: </strong>Providing ECEs with online training in physical activity through an e-Learning course may not be sufficient to increase physical activity levels among young children in their care. It may be essential to deliver multicomponent interventions to increase preschoolers' engagement in physical activity in childcare.</p>","PeriodicalId":49712,"journal":{"name":"Pediatric Exercise Science","volume":" ","pages":"302-310"},"PeriodicalIF":1.3,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141908120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
James A Murray, Joseph I Esformes, Paul J Byrne, Jeremy A Moody
{"title":"Integrating Resistance Training Into Secondary School Physical Education Lessons: Effects of a 6-Week Intervention on Athletic Motor Skill Competencies.","authors":"James A Murray, Joseph I Esformes, Paul J Byrne, Jeremy A Moody","doi":"10.1123/pes.2023-0071","DOIUrl":"10.1123/pes.2023-0071","url":null,"abstract":"<p><strong>Purpose: </strong>The purpose of this study was to examine the effects of resistance training (RT) in physical education lessons on athletic motor skill competencies in secondary school children.</p><p><strong>Method: </strong>Seventy-eight males were randomized into experimental year groups or a control group. Experimental groups participated in RT during physical education lessons for a 6-week half-term. The control group continued with their games-based curriculum. Countermovement jump (CMJ) height, seated medicine ball throw (SMBT) distance, and RT skills battery scores were measured preintervention and postintervention.</p><p><strong>Results: </strong>All experimental groups significantly improved SMBT distance and RT skills quotient (P < .05). All intervention year groups also significantly improved CMJ height (P < .05), except for year 9. Although the control group did not show improvements in CMJ height and RT skills quotient, there was a significant improvement in SMBT distance (P < .05). The year 7 and 8 males exhibited greater improvements in CMJ height and SMBT distance (d = 0.21-0.79) than in year 9 (d = 0.00-0.40).</p><p><strong>Conclusion: </strong>Results of the study indicated that a 6-week half-term RT intervention in physical education lessons can improve athletic motor skill competencies (P < .05, d = 0.21-2.51) in male youths.</p>","PeriodicalId":49712,"journal":{"name":"Pediatric Exercise Science","volume":" ","pages":"229-238"},"PeriodicalIF":1.3,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141861439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
César Iván Ayala-Guzmán, Luis Ortiz-Hernandez, Cristian Escudero Malpica, Alejandro Macias Rosas, Jesus Ivan Castro Avila
{"title":"Phase Angle and Body Composition as Predictors of Fitness and Athletic Performance in Adolescent Boxers.","authors":"César Iván Ayala-Guzmán, Luis Ortiz-Hernandez, Cristian Escudero Malpica, Alejandro Macias Rosas, Jesus Ivan Castro Avila","doi":"10.1123/pes.2023-0165","DOIUrl":"10.1123/pes.2023-0165","url":null,"abstract":"<p><strong>Background: </strong>Phase angle (PhA) is an indicator of cellular health, function, and integrity. PhA has been considered an indicator of nutritional and health status, but it is uncertain whether it could be used as a fitness or athletic performance indicator.</p><p><strong>Objective: </strong>To analyze the relationship between PhA and the fitness and athletic performance of adolescent boxers and to know whether this association is independent of body composition.</p><p><strong>Methods: </strong>Thirty-seven trained youth boxers (15-18 y old) participated in the study. Participants underwent anthropometry and bioelectrical impedance assessments. The following tests were conducted: Fitness-Gram battery; speed, agility, and quickness; ball throws; punch impact force; bench press maximal strength; and vertical and horizontal jumps. Linear regression models were estimated and adjusted by covariates.</p><p><strong>Results: </strong>The PhA was related to upper-limb strength. Nevertheless, in linear regression models, after adjusting models by body composition, only PhA remained as a predictor of relative maximal strength. The PhA was not a predictor of speed, agility, and quickness; cardiorespiratory fitness; or lower-limb power, in which adiposity was the main predictor of fitness.</p><p><strong>Conclusions: </strong>In adolescent boxers, PhA can predict upper-limb maximal strength independently of bioelectrical impedance analysis premises. However, compared with mucle mass, PhA is not a better predictor of upper-limb maximal strength.</p>","PeriodicalId":49712,"journal":{"name":"Pediatric Exercise Science","volume":" ","pages":"201-210"},"PeriodicalIF":1.3,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141789646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gerfeson Mendonça, Arthur Oliveira Barbosa, Ially Rayssa Dias Moura, Juliana Maria da Penha Freire Silva, Alcides Prazeres Filho, Diego Júnio da Silva, Chrystiane Vasconcelos Andrade Toscano, José Cazuza de Farias Júnior
{"title":"Sedentary Behavior and Cardiometabolic Markers in Adolescents: A 4-Year Longitudinal Study.","authors":"Gerfeson Mendonça, Arthur Oliveira Barbosa, Ially Rayssa Dias Moura, Juliana Maria da Penha Freire Silva, Alcides Prazeres Filho, Diego Júnio da Silva, Chrystiane Vasconcelos Andrade Toscano, José Cazuza de Farias Júnior","doi":"10.1123/pes.2023-0202","DOIUrl":"10.1123/pes.2023-0202","url":null,"abstract":"<p><strong>Purpose: </strong>Analyzed the associations of sedentary behavior (SB) measured by questionnaire and accelerometer, with cardiometabolic markers in adolescents.</p><p><strong>Methods: </strong>Longitudinal study with 4 years of follow-up with adolescents from João Pessoa, Brazil. SB was measured using a questionnaire (305 adolescents: 54.5% females; age 11.7 [SD = 0.7]) and use of accelerometer (136 adolescents: 54.8% females; age 11.5 [SD = 0.7]). The cardiometabolic markers were body mass index, waist circumference, systolic and diastolic blood pressure, fasting glucose, total cholesterol, triglycerides, low-density lipoproteins and high-density lipoproteins (HDL-C), total cholesterol/HDL ratio, triglycerides/HDL ratio, and non-HDL-C. Generalized Estimating Equation analysis was used to for analyses.</p><p><strong>Results: </strong>The average time in SB by the accelerometer was greater (average 8.3 [SD = 1.5], 8.8 [SD = 1.6], and 8.4 [SD = 1.9] h/d/wk) than observed in the questionnaire (on average 6.0 [SD = 4.1], 7.2 [SD = 4.9], and 6.6 [SD = 5.4] h/d/wk), in all years of the study, but without a significant increasing trend (P > .05) over time for both measures. There was a significant and positive association between SB measured by the questionnaire and SBP (β = 0.148; 95% CI, 0.021-0.274).</p><p><strong>Conclusions: </strong>The SB generally does not seem to contribute to significant changes in cardiometabolic markers in adolescents, despite it being associated with increased systolic blood pressure levels.</p>","PeriodicalId":49712,"journal":{"name":"Pediatric Exercise Science","volume":" ","pages":"154-163"},"PeriodicalIF":1.3,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141762077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Intensity and Appreciation of Sweet Taste Solutions Are Modulated by High-Intensity Aerobic Exercise in Adolescent Athletic Males.","authors":"Alexandre-Charles Gauthier, Marc-Étienne Villeneuve, Mathieu Cournoyer, Marie-Eve Mathieu","doi":"10.1123/pes.2024-0040","DOIUrl":"10.1123/pes.2024-0040","url":null,"abstract":"<p><strong>Purpose: </strong>Exercise seems to influence taste, but the effect of exercise on specific tastes is still to be elucidated among youths.</p><p><strong>Methods: </strong>Athlete boys aged 14-16 years were recruited. Participants (n = 19) ages ranged 14.7 (0.7) years, weight 59.6 (7.8) kg, and height of 173.4 (7.9) cm. Distinct taste tests were administered using low and high concentrations of sweet, salty, and bitter solutions before and after a 30-minute aerobic exercise session (70%-90% of estimated maximal heart rate). McNemmar tests, standard paired t tests, Wilcoxon signed-rank tests, and Cohen d effect size tests were used to analyze taste identification, intensity, and appreciation.</p><p><strong>Results: </strong>There were no significant differences in taste identification capacities after exercise. Participants perceived more intense (P = .037) and appreciated better (P = .004) the low-concentration sweet solution after exercise. Taste appreciation was increased for the high-concentration sweet solution (P = .009) after exercise. Effect sizes were moderate (0.516-0.776). Possible effects were noted for the intensity of salty solutions (P = .0501 and .0543).</p><p><strong>Conclusion: </strong>Following an exercise session, participants had increased perceived intensity and appreciation of sweet solutions. This adds new insights into how exercise influences taste in youths, a topic less documented compared with adults, suggesting further research into its impact on dietary choices is needed.</p>","PeriodicalId":49712,"journal":{"name":"Pediatric Exercise Science","volume":" ","pages":"182-189"},"PeriodicalIF":1.3,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141460313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}