International Journal of Strength and Conditioning最新文献

{"title":"Unlocking Basketball Athletic Performance: Force Plate-Derived Countermovement Jump Normative Reference Values From Seven NCAA Division-I Power Five Men’s College Basketball Teams","authors":"Drake Berberet, Adam Petway, Karah Bell, Zack Gillen, Peter Mundy, Henry Barrera, Jason Kabo, Dom Walker, Garrett Medenwald, Braden Welsh, John Mcmahon","doi":"10.47206/ijsc.v4i1.354","DOIUrl":"https://doi.org/10.47206/ijsc.v4i1.354","url":null,"abstract":"This study represents a pioneering effort in establishing normative benchmarking for countermovement jump (CMJ) metrics on Hawkin Dynamics dual wireless force plate within a substantial cohort (n = 96) of NCAA Division-I (DI) Power Five Men’s College Basketball (MCBB) players. This cohort comprised four centers (age = 20.01 ± 1.31 years, height on website = 216.32 ± 5.27 cm, body mass on plates = 115.11 ± 16.13 kg), 37 forwards (age = 21.09 ± 1.68 years, height on website = 203.84 ± 5.45 cm, body mass on plates = 103.67 ± 10.42), and 55 guards (age = 20.92 ± 1.54 years, height on website = 190.49 ± 7.44 cm, body mass on plates = 87.04 ± 6.98 kg) from seven teams that performed three CMJ trials with hands on hips during the pre-season period of the 2023-2024 season over a span of 26 days and seven testing sites. All data was uniformly collected by a single designated tester who implemented consistent instructions, procedures, and equipment at all test sites. Comparing forwards and guards, 45% (18/40) of the reported metrics showed significance (p < 0.05) and 35% (14/40) yielded moderate-large effect sizes (e.g., > 0.50). Additionally, percentiles (3-97th) with qualitative descriptors and a traffic light system were provided. Such normative data can serve as a valuable reference point for coaches, scouts, and players alike, facilitating the evaluation of both individual and team performance while also guiding the development of tailored strength and conditioning strategies specific to the demands of NCAA DI MCBB.","PeriodicalId":170948,"journal":{"name":"International Journal of Strength and Conditioning","volume":"46 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141340036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Training Interventions for Improved Deceleration Ability in Adult Team-Based Field Sports Athletes","authors":"Louise Marvin, Paul Read, Blake McLean, Sam Palmer, Job Fransen","doi":"10.47206/ijsc.v4i1.313","DOIUrl":"https://doi.org/10.47206/ijsc.v4i1.313","url":null,"abstract":"Background: Deceleration is a fundamental component of multidirectional speed by which athletes reduce the velocity of their centre of mass to stop or execute changes of direction following acceleration or running at a constant velocity. Enhancing deceleration abilities is crucial for athletes as successfully executing horizontal deceleration has important implications for match outcomes in sports requiring rapid multidirectional movements. However, specific training interventions targeting deceleration are scarce. The purpose of this systematic review and meta-analysis was to examine the effects of training interventions on deceleration performance in adult team-based field and court sports athletes. \u0000Methods: A systematic literature search was conducted through electronic databases, SPORTdiscus, PubMed, and Web of Science from inception to February 2022, and re-run in May 2023. The search terms were related to different training interventions and kinetic, kinematic, and performance outcomes related to deceleration performance. Studies were included if they consisted of a randomised controlled trial which investigated the effects of training on deceleration-specific outcome measures in adult team-based field and court sports athletes. Risk of bias was assessed using the revised Cochrane risk-of-bias tool for randomised trials (RoB2). Post-intervention effect sizes (Hedge’s g) were calculated between the intervention and control groups and a meta-analysis was performed using a random effects model. \u0000Results: Twelve studies were included, with 29 deceleration-specific outcomes measured in a total of 381 participants. There was inconsistency in methodological designs, including control group types, length and type of interventions and in reported deceleration-specific outcome measures. Across all observations of deceleration performance measures there was a standardised mean difference of -0.04 (95% CI: -0.50, 0.42), favouring control groups, indicating little effect of training on deceleration performance. For secondary outcomes related to deceleration, for kinetics (SMD = -0.29, 95% CI = -0.83, 0.25, I2 = 55%, p < 0.01), joint kinetics (SMD = -0.20, 95% CI = -1.01, 0.61, I2 = 68%, p < 0.01) and muscle activation (SMD = -0.10, 95% CI = -0.44, 0.24, I2 = 19%, p = 0.28) had greater effects for control groups, whereas joint kinematics (SMD = 0.07, 95% CI = -0.11, 0.24, I2 = 0%, p = 0.77), favoured the intervention groups. \u0000Conclusion: For the deceleration-specific outcomes reported in the included studies, training was not likely to produce a performance improvement in participants compared to control groups. However, due to methodological inconsistencies between studies and observed high risk of bias, the results should be interpreted with caution. More rigorous research methods should be included in the future to address areas that may introduce potential biases. Future research should address the differences in the type, timing, frequency, and dur","PeriodicalId":170948,"journal":{"name":"International Journal of Strength and Conditioning","volume":"98 21","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141359262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Band Conditioning Contractions Result in Greater Acute Performance Enhancement When Utilising Contrast Training in Elite Same Day Concurrently Trained Team Sport Athletes","authors":"D. Ritchie, Justin Keogh, P. Reaburn, Jon Bartlett","doi":"10.47206/ijsc.v4i1.292","DOIUrl":"https://doi.org/10.47206/ijsc.v4i1.292","url":null,"abstract":"Purpose: The aim of the current study was to assess the effect of altering conditioning contraction within contrast training on subsequent drop jump performance in the presence of same day concurrent training.  \u0000Methods: In a randomized crossover design, 8 professional Australian Football athletes completed same day skills/endurance training followed by resistance training utilizing different PAPE conditioning contractions (Strength, Band and Isometric). Conditioning contractions were performed for three sets of 3 repetitions; Strength (box squat, instructed to lift as heavy as possible), Band (band resisted, lower-force/ higher-velocity box squat) and Isometric (3 second maximal isometric quarter squat), with 3 DJ repetitions performed one minute following. Data were analyzed by fitting a mixed model (significance was set at P ≤ 0.05) to compare changes in DJ performance to respective baseline for each protocol with Dunnett’s post hoc analysis applied.  \u0000Results: Compared to baseline, Band protocol resulted in the greatest increase in reactive strength index (RSI) for set 1 (P = 0.029) and 2 (P = 0.007), Stiffness for set 1 (P = 0.041) and 2 (P = 0.015), Mean Power for set 1 (P = 0.002) and 2 (P = 0.040), and Peak Power for set 1 (P = 0.002). Isometric increased RSI (P = 0.023) and Stiffness (P = 0.018) for set 1 only and Strength showed no improvement.  \u0000Conclusion: Practitioners working with athletes undertaking same day concurrent training should consider alternate modes of conditioning contraction such as Band conditioning contractions when prescribing contrast training to elicit a PAPE response.","PeriodicalId":170948,"journal":{"name":"International Journal of Strength and Conditioning","volume":" 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141374021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Effects of Bilateral and Unilateral Training on Leg Press Strength and Vertical Jump Height","authors":"William Muirhead, Logan Bailey, Michael Rebold, Mallory Kobak","doi":"10.47206/ijsc.v4i1.275","DOIUrl":"https://doi.org/10.47206/ijsc.v4i1.275","url":null,"abstract":"This investigation assessed the effects of bilateral and unilateral strength training on strength and power development, as measured by uni- and bi-lateral 3-repetition maximum leg press and vertical jump tests, respectively. 14 college-aged participants were randomized into either bilateral or unilateral training conditions. The participants engaged in biweekly strength training sessions for a period of 4 weeks, with strength and power pre- and post-testing in the weeks immediately before and after the training protocol, respectively. There was no significant (F = 0.98, p = 0.33) main effect of condition for vertical jump height. There was no significant (F = 2.48, p = 0.13) main effect of condition for 1RM bilateral strength. There was no significant (F = 1.86, p = 0.19) main effect of condition for 1RM unilateral strength between both right and left legs. While our investigation yielded no significant results, there may be reason to further investigate this area of research, due to professionals wanting to develop weight training protocols for the athletic and/or injured populations to facilitate greater improvements in performance and/or quicker recovery from injuries.","PeriodicalId":170948,"journal":{"name":"International Journal of Strength and Conditioning","volume":"113 41","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141126487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Variability in Limb Occlusion Pressures Across Visits and Between Limbs in Collegiate Soccer and Cross Country Athletes","authors":"Alexander E. Montoye, Danten McFate, Jackson Nordbeck, Ericka A. Bigham, Benjamin Cox, Brian Rider, Jennifer E. Vranish","doi":"10.47206/ijsc.v4i1.293","DOIUrl":"https://doi.org/10.47206/ijsc.v4i1.293","url":null,"abstract":"Our study assessed limb occlusion pressure (LOP) variability over time and between limbs. Collegiate athletes (n=42; Sample 1 = 15 soccer players, Sample 2 = 13 cross country runners, Sample 3 = 14 cross country runners) attended five visits separated by ≥48 hours (Sample 1), three visits separated by ~3 weeks each (Sample 2), or four visits separated by ~3 weeks each (Sample 3). For all samples, supine LOP was assessed in each leg (and also in each arm for Sample 3) using an automated system. Paired samples t-tests or RMANOVA were used to compare LOP between limbs and across trials, respectively. Additionally, agreement and variability across measures were assessed using intraclass correlations and mean absolute percent differences (MAPD). There were no significant differences in LOP across visits for any of the samples, with primarily moderate or good agreement (intraclass correlations r=0.29-0.88) and low variability (MAPD 4.3-9.0%). There were no significant differences in LOP between left and right limbs, with moderate to good agreement (r=0.74-0.93) and low variability (MAPD 3.2-7.2%). The demonstrated stability in LOP over time and between sides of the body suggests that LOP may not always need to be measured daily or bilaterally, adding feasibility to field-based implementation.","PeriodicalId":170948,"journal":{"name":"International Journal of Strength and Conditioning","volume":" 34","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140685549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Acute Effects of Different Inter-Repetition Rest Intervals During ‘Composite’ Training on Fast Stretch-Shortening Cycle and Neuromuscular Performance in Hurling Players: A Pilot Study","authors":"Luke Atkins, Rodrigo Ramirez-Campillo, Jeremy Moody, Colin Coyle, Paul J Byrne","doi":"10.47206/ijsc.v4i1.277","DOIUrl":"https://doi.org/10.47206/ijsc.v4i1.277","url":null,"abstract":"One study to date has compared inter-repetition rest intervals when employing ‘composite’ training. Thus, the purpose of this study was to compare the acute effects of 2-, 3- and 4-mins ‘composite’ training inter-repetition rest intervals on fast stretch shortening cycle (SSC) and neuromuscular performance. A randomized crossover research design was employed. Drop jump (DJ), 20m sprint (with 5 and 10m splits), countermovement jump (CMJ) and isometric mid-thigh pull (IMTP) tests were performed pre-session, post-session, and 7 days post-session to observe if supercompensation occurred. A 2-min rest interval showed enhancements in fast SSC DJ performance where supercompensation may have occurred in height, velocity, force and power (Cohen’s d = 0.22-0.55). A 3-minute rest interval elicited responses in 5 and 20m sprint performance (Cohen’s d = -0.29 to -0.30) and isometric RFD (Cohen’s d = 0.35-0.60) 7 days post-session. CMJ measures (Cohen’s d = 0.22-0.76) appeared to have experienced supercompensation when employing a 4-minute rest period. Significant (p < 0.05) decreases in performance pre- to post-session were found for certain sprint, CMJ and IMTP variables. The ‘composite’ training inter-repetition rest interval used, appears dependent on the primary goal of a training cycle. However, a 3-min rest interval may be used if there are multiple goals of a training cycle due to enhancements in sprint performance, isometric RFD and CMJ height. ‘Composite’ training is a time-efficient method of enhancing jump, sprint, and maximal strength, which is suitable for practitioners working in sports such as hurling where time is limited.","PeriodicalId":170948,"journal":{"name":"International Journal of Strength and Conditioning","volume":"44 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140711247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Weighted Vest Load Arrangement and Data Normalization Effects on Lower Limb Biomechanics During Countermovement Jump Landings","authors":"Juan Baus, John R. Harry, James Yang","doi":"10.47206/ijsc.v4i1.186","DOIUrl":"https://doi.org/10.47206/ijsc.v4i1.186","url":null,"abstract":"This paper assessed the weighted vest load arrangement and data normalization method effects on ground reaction forces (GRF), joint kinematics, and joint kinetics during the landing portion of the countermovement jump. Vertical GRF and sagittal kinematic data were obtained from 12 males and 12 females during countermovement jump-landings in 4 different loading arrangements (unloaded, 10% body mass load placed anteriorly, posteriorly, and split anterior/posterior). Two methods (body mass vs. mass*landing height) were used to normalize joint torques to determine whether common mass-normalization (type A) yielded different results than a jump-landing specific mass*landing height normalization (type B) in statistical significance. Mixed-model analyses of variance (α=0.05) and effect sizes (ES) were used to assess differences between sexes and loading conditions for each normalization method. Results show that for normalization A, significant statistical differences were found between sexes for peak vertical GRF, hip moment, and knee moment. Pooled sex peak vertical GRF and hip moments showed significant differences when comparing the unloaded with the back and front-loaded conditions. For normalization B, the peak vertical GRF also showed significant differences between men and women but with smaller effect sizes. Only the hip moment showed significant differences for both normalization methods but changed the magnitude of its effect sizes. Results suggest that different normalization methods could be considered for joint moments or GRF depending on the nature of the statistical significance of jump height.","PeriodicalId":170948,"journal":{"name":"International Journal of Strength and Conditioning","volume":"11 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140739076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Relationship Between Maximum Lower Limb Strength & Power, and GPS Acceleration Speed in Elite U20 Gaelic Football Athletes","authors":"Michael O'Driscoll, Tommy Mooney, Liam Sweeney","doi":"10.47206/ijsc.v4i1.282","DOIUrl":"https://doi.org/10.47206/ijsc.v4i1.282","url":null,"abstract":"Previous research indicates positive relationships between high levels of lower limb strength and power, and acceleration sprint velocity in team sport athletes. This cross-sectional study aimed to investigate the relationship between lower limb absolute and relative strength, countermovement jump (CMJ) height, and Global Positioning System (GPS) recorded 20m acceleration sprint velocity in elite male U-20 Gaelic football athletes. Nineteen athletes (19.0 ± 0.5 years; 81.1 ± 5.5 kg; 182 ± 6.2 cm) from the same elite U-20 squad participated in this study during an in-season period. Subjects performed a >95% 1RM box squat, a 20m sprint test, and a CMJ test. Relative maximum lower limb strength (r = 0.54, 95% CI [0.11 to 0.8]; p < 0.05) and CMJ height (r = 0.66, 95% CI [0.29 to 0.86]; p < 0.001) showed strong correlations with 20m sprint velocity. A multiple linear regression analysis demonstrated that lower limb maximum relative strength and CMJ height significantly predicted 20m sprint velocity (Adjusted R2 = 0.51, F (2, 16) = 6.29, p < 0.05). These findings provide evidence for the importance of elite under-age Gaelic football athletes acquiring high levels of lower limb strength and power characteristics to enhance acceleration sprint performance. ","PeriodicalId":170948,"journal":{"name":"International Journal of Strength and Conditioning","volume":"61 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140367662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Effect of Hip Flexor Tightness on Muscle Activity during the Front Squat","authors":"Sarah C. Martinez-Sepanski, Angie Bowman, Kelton Mehls","doi":"10.47206/ijsc.v4i1.259","DOIUrl":"https://doi.org/10.47206/ijsc.v4i1.259","url":null,"abstract":"The purpose of this study was to compare peak and mean surface electromyography (sEMG) in the rectus femoris (RF), gluteus maximus (GM), biceps femoris (BF), semitendinosus (ST) muscles, and GM:BF muscle co-activation ratio during front squat between resistance trained females with and without hip flexor tightness. Peak and mean sEMG was recorded during three repetitions of 75% of one-repetition maximum (1RM) front squat of resistance trained females who either had hip flexor tightness (n = 9) or did not have hip flexor tightness (n = 7). Observed mean sEMG of the GM and BF was used to calculate GM:BF muscle co-activation. The result of the independent samples t-test indicated a statistically significant difference in peak RF (p = .013), peak (p = .001) and mean (p = .045) BF, and GM:BF muscle co-activation (p = .042) between those with and without hip flexor tightness during the ascending phase of a 75% 1RM front squat. The results indicate the RF and BF to be more active in resistance trained females with hip flexor tightness than those without hip flexor tightness during the front squat, potentially lowering GM activation relative to the BF. Fitness professionals should consider providing a hip flexor stretching interventions to prevent over activation of the BF when selecting the front squat as a resistance training exercise.","PeriodicalId":170948,"journal":{"name":"International Journal of Strength and Conditioning","volume":" 44","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140216553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Differences in Female Lift Quality During Back Squat, Bench Press, and Deadlift Compared to Standardized Percent of 1RM and Repetitions Allowed","authors":"Andy A Wolfe, Ruth Caddell, Gillian Braden, Emma Thornton, Jackson Maynard, Cheyenne Lavender, Micheal Luera, Aaron Rinehart","doi":"10.47206/ijsc.v4i1.266","DOIUrl":"https://doi.org/10.47206/ijsc.v4i1.266","url":null,"abstract":"The purpose of the study was to examine the difference between the current norm repetition-intensity recommendations and the performed repetitions of females at concurrent intensities. Females (n = 17) with six-months of consistent resistance training experience completed five testing sessions. Session-one consists of one-repetition maximum (1RM) testing for the squat (SQ), bench press (BP), and deadlift (DL). Sessions 2-5 involved repetition-maximum testing at 65, 75, 85, and 95% 1RM, in the order of SQ, BP, then DL, with 10-15 minutes of rest between exercises. A 3 (exercise) x 4 (percentage-intensity) Mixed Factorial ANOVA determined significant differences in repetitions performed between exercises at each intensity level. A series of one-sample t-tests were performed to indicate female differences between established target repetitions for each exercise across all intensities (65% = 15, 75% = 10, 85% = 6, 95% = 2). Significance level was set at p < .05. There was no significant main effect (p=0.14) between repetitions completed during SQ, BP, or DL at 65% (26.1±6.8, 21.3±6.8, 23.4±6.3, respectively), 75% (18.0±6.2, 14.4±4.2, 15.7±4.7, respectively), 85% (10.3±3.7, 9.0±4.6, 9.6±4.1, respectively), nor 95% 1RM (4.1±2.4, 2.5±2.0, 3.4±2.0, respectively). No significant difference was recognized (p = 0.09) between current norms and female BP repetitions at 95%. Significantly higher repetitions were completed by females at all other percentages during SQ, BP, and DL. These results suggest different resistance training intensity-repetition ratios should be prescribed for females in comparison to current norms; meriting future research aimed at establishing a sex-specific intensity-repetition ratio.","PeriodicalId":170948,"journal":{"name":"International Journal of Strength and Conditioning","volume":"8 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140239453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}