Acta of bioengineering and biomechanics最新文献_第7页

The effects of selected lower limb muscle activities on a level of imbalance in reaction on anterior-posterior ground perturbation 选择下肢肌肉活动对前后地面扰动反应不平衡水平的影响

IF 1 4区医学

Acta of bioengineering and biomechanics Pub Date : 2022-01-01 DOI: 10.37190/abb-02112-2022-02

P. Wodarski, M. Chmura, Michał Szlęzak, Grzegorz Gruszka, Justyna Romanek, J. Jurkojć

{"title":"The effects of selected lower limb muscle activities on a level of imbalance in reaction on anterior-posterior ground perturbation","authors":"P. Wodarski, M. Chmura, Michał Szlęzak, Grzegorz Gruszka, Justyna Romanek, J. Jurkojć","doi":"10.37190/abb-02112-2022-02","DOIUrl":"https://doi.org/10.37190/abb-02112-2022-02","url":null,"abstract":"Purpose We investigated whether an increase in muscular tone induced by the information about imminent posture destabilisation brings a positive result and prevents such destabilisation. Methods We measured forward and backwards movements of 38 participates (27 females and 11 males, aged 23 (SD 2.6)) on the treadmill (forward and backward movements). All participants were subject to three test condition trials (Tr): 1) subject did not know the nature and time of perturbation (Tr1); 2) subject knew the nature of perturbation but did not know time (Tr2); 3) both the time and nature of perturbation were known precisely (Tr3). The tests resulted in the determination of muscular activity connected with a postural adjustment as well as values of pressure exerted by the forefoot on the ground, and the angle of flexion in the knee joint. Results In terms of postural adjustments it was possible to observe statistically significant differences in muscular activity between Tr1 and Tr2 refer to Tr3. No statistically significant differences were identified in all phases as regards values of forefoot pressure and those concerning the angle of flexion in the knee joint. An increase in the muscle tone before perturbation was correlated with the displacement and the velocity of the COP after perturbation. Conclusions These data indicate that knowledge of the expected time of perturbation is responsible for postural adjustment. Furthermore, muscle tone resulting from an adjustment of perturbation and responsible for the stiffening of lower limbs triggered greater displacement of the COP after perturbation.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"1 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70000021","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}

引用次数: 0

Biomechanical analysis of thorax-abdomen response of vehicle occupant under seat belt load considering different frontal crash pulses 考虑不同正面碰撞脉冲的安全带载荷下汽车乘员胸腹反应生物力学分析

IF 1 4区医学

Acta of bioengineering and biomechanics Pub Date : 2022-01-01 DOI: 10.37190/abb-02155-2022-02

Jinlong Qiu, Kui Li, Hongyi Xiang, Jingru Xie, Zhuangqin Fan, Mingxin Qin

{"title":"Biomechanical analysis of thorax-abdomen response of vehicle occupant under seat belt load considering different frontal crash pulses","authors":"Jinlong Qiu, Kui Li, Hongyi Xiang, Jingru Xie, Zhuangqin Fan, Mingxin Qin","doi":"10.37190/abb-02155-2022-02","DOIUrl":"https://doi.org/10.37190/abb-02155-2022-02","url":null,"abstract":"Purpose: The purpose of this work was to understand the biomechanical response and injury risk of thorax and abdomen of vehicle front seat occupants caused by seat belt load under different frontal crash pulses. Methods: A vehicle-seat-occupant subsystem finite element (FE) model was developed using the a assembly of vehicle front seat and seat belt together with the THUMS (Total Human body Model for Safety) AM50 (50th% Adult Male) occupant model. Then the typical vehicle frontal crash pulses from different impact scenarios were applied to the vehicle-seat-occupant subsystem FE model, and the predictions from the occupant model were analyzed. Results: The modeling results indicate that the maximum sternal compression of the occupant caused by seat belt load is not sensitive to the peek of the crash pulse but sensitive to the energy contained by the crash pulse in the phrase before seat belt load reaching its limit. Injury risk analysis implies that seat belt load of the four crash scenarios considered in the current work could induce a high thorax AIS2+ injury risk (>80%) to the occupants older than 70 years, and a potential injury risk to the spleen. Conclusions: The findings suggest that control of the energy in the first 75 ms of the crash pulse is crucial for vehicle safety design, and thorax tolerance of the older population and spleen injury prevention are the key considerations in developing of seat belt system.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"1 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70000211","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}

引用次数: 0

Aerodynamic analysis of human walking, running and sprinting by numerical simulations. 通过数值模拟对人类行走、跑步和短跑进行空气动力学分析。

IF 1 4区医学

Acta of bioengineering and biomechanics Pub Date : 2022-01-01

Pedro Forte, Nuno Sousa, José Teixeira, Daniel Marinho, António Monteiro, José Bragada, Jorge Morais, Tiago Barbosa

引用次数: 0

Assessment of stress shielding around a dental implant for variation of implant stiffness and parafunctional loading using finite element analysis. 利用有限元分析评估牙科植入物周围的应力屏蔽，以适应植入物刚度和准功能负荷的变化。

IF 1 4区医学

Acta of bioengineering and biomechanics Pub Date : 2022-01-01

Muhammad Ikman Ishak, Ruslizam Daud, Siti Noor Fazliah Mohd Noor, C Y Khor, Husniyati Roslan

{"title":"Assessment of stress shielding around a dental implant for variation of implant stiffness and parafunctional loading using finite element analysis.","authors":"Muhammad Ikman Ishak, Ruslizam Daud, Siti Noor Fazliah Mohd Noor, C Y Khor, Husniyati Roslan","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: The aim of this study was to evaluate the mechanical stimuli transfer at the bone-implant interface via stress and strain energy density transfer parameters. This study also aimed to investigate the effect of different implant stiffness and parafunctional loading values on the defined mechanical stimuli transfer from the implant to the surrounding bone.Methods: A three-dimensional finite element model of two-piece threaded dental implant with internal hexagonal connection and mandibular bone block was constructed. Response surface method through face-centred central composite design was applied to examine the influence of two independent factors variables using three levels. The analysis model was fitted to a second-order polynomial equation to determine the response values.Results: The results showed that the implant stiffness was more effective than the horizontal load value in increasing the stress and strain energy density transfers. The interaction between both factors was significant in decreasing the likelihood of bone resorption. Decreasing the implant stiffness and horizontal load value led to the increased stress transfer and unexpected decrease in the strain energy density, except at the minimum level of the horizontal load. The increase in the implant stiffness and horizontal load value (up to medium level) have increased the strain energy transfer to the bone.Conclusions: The stress and strain energy density were transferred distinctively at the bone-implant interface. The role of both implant stiffness and parafunctional loading is important and should be highlighted in the preoperative treatment planning and design of dental implant.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"24 3","pages":"147-159"},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139680467","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}

引用次数: 0

Can strength exercise affect the muscle oxygen saturation response? 力量锻炼会影响肌肉氧饱和度反应吗？

IF 1 4区医学

Acta of bioengineering and biomechanics Pub Date : 2022-01-01

Claudia Miranda-Fuentes, Luis Chirosa-Rios, Isabel Guisado-Requena, Felipe García-Pinillos, Indya Del-Cuerpo, Antonio López-Fuenzalida, Paulina Ibacache-Saavedra, Daniel Jerez-Mayorga

{"title":"Can strength exercise affect the muscle oxygen saturation response?","authors":"Claudia Miranda-Fuentes, Luis Chirosa-Rios, Isabel Guisado-Requena, Felipe García-Pinillos, Indya Del-Cuerpo, Antonio López-Fuenzalida, Paulina Ibacache-Saavedra, Daniel Jerez-Mayorga","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: The objective of the study was to describe and compare the acute response of muscle oxygen saturation (SmO2) and hemoglobin concentration (Hgb) in the vastus lateralis (VL) during resistance exercise protocols until failure.Methods: Sixteen males were considered (mean ± SD, age = 36.12 ± 6.40 years). Two familiarization sessions and one evaluation session were carried out where three force protocols were executed in the VL, one of them was isometric load (P1) and two of dynamic load (P2 and P3). SmO2 [%] and Hgb [g/dL] were measured before and after each of these protocols. For P1, three series of 8 s of maximum isometric strength with the rest of 60 s between each set, the average isometric strength (AIS), and the isometric peak strength (IPS) were also recorded. After five minutes, P2 was performed, with an initial load of 40% of AIS. Then, at 30 minutes, P3 was performed considering an initial load of 40% of IPS.Results: The results suggest (I) minimum levels of SmO2 (66.31 ± 9.38%) and Hgb (12.22 ± 0.55 g/dL) during P2, (II) no significant differences were observed between the average loads of the respective protocols for SmO2 and (III) muscle Hgb differed significantly between rest with P1 and P3.Conclusions: Exercises of increasing intensity and of short duration do not significantly modify SmO2. However, Hgb increases substantially compared baseline values.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"24 2","pages":"37-45"},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139680509","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}

引用次数: 0

Encrustation of the ureteral double-J Stents made of styrene/ethylene/butylene and polyurethane before and after implantation. 由苯乙烯/乙烯/丁烯和聚氨酯制成的输尿管双 J 支架在植入前后的结壳情况。

IF 1 4区医学

Acta of bioengineering and biomechanics Pub Date : 2022-01-01

Adam Haliński, Kamila Pasik, Andrzej Haliński, Alberto Trinchieri, Noor Buchholz, Katarzyna Arkusz

{"title":"Encrustation of the ureteral double-J Stents made of styrene/ethylene/butylene and polyurethane before and after implantation.","authors":"Adam Haliński, Kamila Pasik, Andrzej Haliński, Alberto Trinchieri, Noor Buchholz, Katarzyna Arkusz","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: The aim of this study was to determine the affinity to crystal, calculi and biofilm deposition on ureteral double-J stents (DJ stents) after ureterorenoscopic-lithotripsy procedure (URS-L). The analysis was performed in two aspects: to determine which material used for fabricating ureteral stents promotes encrustation and which part of the DJ stents is the most vulnerable for blockage.Methods: One hundred and twenty patients with an indwelling DJ stent duration between 7 and 78 days were included in this study. The encrustation of DJ stents was characterized by scanning electron microscopy (SEM), and the mechanical properties of DJ stents were examined using the standard MTS Micro Bionix tensile test.Results: This study showed that polyurethane catheters have a much higher affinity for encrustation than styrene/ethylene/butylene block copolymer. Obtained results indicated the proximal (renal pelvis) and distal (urinary bladder) part is the most susceptible to post-URS-L fragments and urea salt deposition. Both the DJ ureteral stents' outer and inner surfaces were completely covered even after 7 days of implantation.Conclusions: Performed analysis pointed out that polyurethane DJ stents have a much higher affinity for encrustation of calculi and NaCl crystals compared to the silicone-based copolymer. The surface of the ureteral stents needs improvement to minimize salt and kidney stone deposition, causing pre-biofilm formation and the occurrence of defects and cracks.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"24 2","pages":"109-117"},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139680511","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}

引用次数: 0

Kinematic evaluation of contrary body movement in sport ballroom dancing. 体育交谊舞中相反身体运动的运动学评估。

IF 1 4区医学

Acta of bioengineering and biomechanics Pub Date : 2022-01-01

Szymon Kuliś, Jan Gajewski

{"title":"Kinematic evaluation of contrary body movement in sport ballroom dancing.","authors":"Szymon Kuliś, Jan Gajewski","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: The aim of the study was to analyse the contrary body movement in Viennese waltz performed by dancesport athletes and to determine its relationship on scores awarded by the adjudicators.Methods: Six high-level and six intermediate dance couples took part in the study. Each couple performed three identical series of three natural turns figure in the Viennese waltz. All of them were recorded on camera while performing to music. All the trials of each couple were evaluated by 6 international adjudicators as to the technical quality component from the Absolute Judging System. A device for measuring triaxial rotational angular velocities was mounted on the dorsal part of the pelvic girdle and on the back of the chest of each athlete.Results: An analysis of covariance revealed that the mean squares of the difference in angular rotation velocity of the pelvic girdle and thoracic spine of the tested dancers were strongly associated with scores given by the adjudicators (F1.9 = 11.5, p = 0.0240, ηp2= 0.449) independently of the assignment to the given group.Conclusions: The analysis and comparison of top level and intermediate athletes showed that the suggested method of measurement, presentation and analysis of the profile motion of pelvic girdle and chest motion may become a good tool for a general evaluation of the movement technique as well as a quick and effective qualitative and quantitative biomechanical assessment of selected components of movement technique in dancesport.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"24 2","pages":"119-128"},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139680516","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}

引用次数: 0

Mechanical properties of the porcine pericardium extracellular matrix cross-linked with glutaraldehyde and tannic acid. 与戊二醛和单宁酸交联的猪心包细胞外基质的机械特性

IF 1 4区医学

Acta of bioengineering and biomechanics Pub Date : 2022-01-01

Karolina Zofia Dąbrowska, Artur Turek, Rafał Grzejda, Magdalena Kobielarz

{"title":"Mechanical properties of the porcine pericardium extracellular matrix cross-linked with glutaraldehyde and tannic acid.","authors":"Karolina Zofia Dąbrowska, Artur Turek, Rafał Grzejda, Magdalena Kobielarz","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: The aim of this study was to determine the influence of factors such as temperature and glutaraldehyde (GA) concentration on the mechanical properties of porcine pericardia, in order to propose the recommended optimal conditions of a cross-linking process. It was also to verify whether tannic acid (TA), a natural cross-linking agent that stabilizes collagenous tissues by a different mechanism than GA, may positively influence the strength of pericardium.Methods: The samples were incubated at various temperatures (4, 22, and 37°C) and GA concentration solutions (0.6, 1.5 and 3%) for 7 days. Three series were selected and additionally cross-linked with 0.3% TA for another 7 days. Mechanical properties of cross-linked pericardium samples, i.e., ultimate tensile strength (UTS) and elastic modulus (E) were measured in uniaxial tensile testing. The hyperelastic model for incompressible materials - isotropic by Ogden [24] and anisotropic by Fung [7] were utilized to describe the mechanical behaviour of treated pericardium.Results: The temperature has an influence on cross-linking effects; the lowest values of UTS were reported for specimens cross-linked at 22 °C, while the mechanical properties of series treated at 4°C or 37°C were comparable. At a particular temperature of incubation, the GA concentrations have not affected the mechanical properties of tissues. The dependence between mechanical parameters and agent concentration was only observed for specimens treated with GA at 37 °C.Conclusions: The conditions of the cross-linking process affect the mechanical properties of the porcine pericardium. Room temperature (22 °C) and the concentration of 1.5% GA occurred to be ineffective. The mechanical properties of GA-treated pericardium were improved by an additional TA cross-linking.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"24 3","pages":"21-30"},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139680523","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}

引用次数: 0

A kinematic analysis of the basketball shot performance: impact of distance variation to the basket. 篮球投篮表现的运动学分析：到篮筐距离变化的影响。

IF 1 4区医学

Acta of bioengineering and biomechanics Pub Date : 2022-01-01

Cíntia França, Élvio Rúbio Gouveia, Manuel J Coelho-E-Silva, Beatriz B Gomes

{"title":"A kinematic analysis of the basketball shot performance: impact of distance variation to the basket.","authors":"Cíntia França, Élvio Rúbio Gouveia, Manuel J Coelho-E-Silva, Beatriz B Gomes","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: The aim of the current study was to examine the variation on the kinematic parameters in the basketball shot associated with the shooting distance.Methods: Twenty-seven female adolescent basketball players aged 12.1 ± 0.9 years completed 10 BS trials from a frontal position of 4.75 m and 5.75 m from the basket. Nine anatomical markers were placed on the participants' dominant side to assess the kinematic variables. The following variables were analyzed: angle, velocity, and height at ball release; centre of mass horizontal displacement and maximum height attained; maximum hip height and hip height at release; shoulder, elbow, and knee angular position and velocity at ball release; deepest knee flexion during the preparatory phase; the peak of the angular velocity of the shoulder, elbow, and knee joints.Results: At release, the angle decreased while velocity increased significantly at 5.75 m. During the release, greater shoulder flexion and increased joint (shoulder and knee) angular velocity were observed. The deepest knee flexion and the centre of mass horizontal dis- placement were accentuated at 5.75 m. The ball release occurred before the peak of the jump phase.Conclusions: To compensate for the long ball trajectory to the basket, participants perform a set of adjustments in the body segmental organization to increase the ball veloc- ity at release. The coaches' feedback should focus on the shooting arm's positioning and in the jump phase (to jump as close to vertical as possible). Also, a consistent shooting technique should be acquired close to the basket before expanding the shooting range.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"24 1","pages":"159-166"},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139680525","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}

引用次数: 0

Influence of force-time parameters of hip abductors on maintaining balance in frontal plane in young healthy females. 髋关节外展肌力-时间参数对年轻健康女性在正面保持平衡的影响

IF 1 4区医学

Acta of bioengineering and biomechanics Pub Date : 2022-01-01

Aneta Bugalska, Anna Hadamus, Sebastian Wójtowicz, Anna Daniluk, Karolina Wiaderna, Marta Grabowicz

{"title":"Influence of force-time parameters of hip abductors on maintaining balance in frontal plane in young healthy females.","authors":"Aneta Bugalska, Anna Hadamus, Sebastian Wójtowicz, Anna Daniluk, Karolina Wiaderna, Marta Grabowicz","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: The aim of this study was to determine the impact of isometric and isokinetic hip abductor muscle strength on the quality of maintaining static balance in healthy subjects.Methods: The study enrolled 51 healthy women aged 18-25. Balance assessment was carried out according to the M-CTSIB protocol and Single Leg Stance Test (with eyes open and closed) using the Biodex Balance System. An isokinetic evaluation conducted at 30 °/s and an isometric evaluation of the hip abductors were performed with the Humac Norm system.Results: Regression analysis for Sway Index (SW) and Stability Index (ST) in bipedal standing showed a significant importance of the presence of visual feedback (RSW EO = -0.922; p < 0.0001; RST EO = -0.613; p = 0.0493), and unstable surface (RSW US = 1.253; p < 0.0001; RSW US = 2.547; p < 0.0001). Regression analysis for single-leg stance showed correlations between the following indices: overall sway index (OR) in single-leg stance, the antero-posterior (AP) sway index and the medio-lateral (ML) sway index on the one hand and isometric abduction time to peak torque (ROR TPT = 0.769; p = 0.0005; RAP TPT = 0.565; p = 0.008; RML TPT = -1.74; p < 0.05, respectively) as well as the test conditions on the other.Conclusions: Physiological activation of the hip abductors may be important for physiological maintenance of postural balance in young people, in both leg standing as well as in single-leg stance. The present results warrant prospective, randomized studies of larger groups that are diversified with regard to age and gender of the participants.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"24 1","pages":"3-8"},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139680534","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}

引用次数: 0