Pub Date : 2023-01-01DOI: 10.1504/ijecb.2023.10055952
J. Speich, P. Ratz, Omid Komari, A. Klausner
{"title":"A Model for the Roles of Actin and Myosin in Adjustable Preload Tension and Acute Length Adaption","authors":"J. Speich, P. Ratz, Omid Komari, A. Klausner","doi":"10.1504/ijecb.2023.10055952","DOIUrl":"https://doi.org/10.1504/ijecb.2023.10055952","url":null,"abstract":"","PeriodicalId":90184,"journal":{"name":"International journal of experimental and computational biomechanics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66745644","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}
Pub Date : 2018-06-14DOI: 10.1504/IJECB.2018.10013559
S. Hashemi, A. Sadegh
The SEM study revealed that the trabecular architectures in the subarachnoid space (SAS) are in the form of tree-shaped rods, pillars, plates or a complex network. In this paper, the effects of pillar and tree-shaped trabeculae on transferring an impact load and a pressure wave to the brain have been investigated. Indeed, two sets of local 3D FE models, including the brain and the SAS with rod and tree-shaped trabeculae were created. The models were subjected to pressure histories from the blunt impact and the shockwave scenarios. The results indicated that the thickness, shape and architecture of the trabeculae would not affect the severity of loads transferring to the brain from shock waves. In cases of blunt impact scenario, the presence of trabeculae would reduce the load transferring to the brain and also the upright tree shaped trabeculae perform stronger in protecting the brain, comparing to the inverted ones.
{"title":"The effects of trabecular architectures on transferring dynamic loads to the brain","authors":"S. Hashemi, A. Sadegh","doi":"10.1504/IJECB.2018.10013559","DOIUrl":"https://doi.org/10.1504/IJECB.2018.10013559","url":null,"abstract":"The SEM study revealed that the trabecular architectures in the subarachnoid space (SAS) are in the form of tree-shaped rods, pillars, plates or a complex network. In this paper, the effects of pillar and tree-shaped trabeculae on transferring an impact load and a pressure wave to the brain have been investigated. Indeed, two sets of local 3D FE models, including the brain and the SAS with rod and tree-shaped trabeculae were created. The models were subjected to pressure histories from the blunt impact and the shockwave scenarios. The results indicated that the thickness, shape and architecture of the trabeculae would not affect the severity of loads transferring to the brain from shock waves. In cases of blunt impact scenario, the presence of trabeculae would reduce the load transferring to the brain and also the upright tree shaped trabeculae perform stronger in protecting the brain, comparing to the inverted ones.","PeriodicalId":90184,"journal":{"name":"International journal of experimental and computational biomechanics","volume":"4 1","pages":"95"},"PeriodicalIF":0.0,"publicationDate":"2018-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46419063","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}
Pub Date : 2018-06-14DOI: 10.1504/IJECB.2018.092257
Shudong Li, Yan Zhang, Yaodong Gu, M. Lake, James Ren
In this work, a full scale subject specific FE foot model is developed to simulate the deformation of human foot under a standing position similar to a navicular drop test. The model used a full bone structure and effective embedded structure method to increase the modelling efficiency. Navicular drop tests have been performed and the displacement of the navicular bone is measured using 3D image analysing system. The experimental results show a good agreement with the numerical models and published data. The model is verified by comparing the numerical data for simple standing against subject specific navicular drop test. The detailed deformation of the navicular bone and factors affecting the navicular bone displacement and measurement are discussed.
{"title":"Experimental studies and effective finite element modelling of foot deformation in standing","authors":"Shudong Li, Yan Zhang, Yaodong Gu, M. Lake, James Ren","doi":"10.1504/IJECB.2018.092257","DOIUrl":"https://doi.org/10.1504/IJECB.2018.092257","url":null,"abstract":"In this work, a full scale subject specific FE foot model is developed to simulate the deformation of human foot under a standing position similar to a navicular drop test. The model used a full bone structure and effective embedded structure method to increase the modelling efficiency. Navicular drop tests have been performed and the displacement of the navicular bone is measured using 3D image analysing system. The experimental results show a good agreement with the numerical models and published data. The model is verified by comparing the numerical data for simple standing against subject specific navicular drop test. The detailed deformation of the navicular bone and factors affecting the navicular bone displacement and measurement are discussed.","PeriodicalId":90184,"journal":{"name":"International journal of experimental and computational biomechanics","volume":"4 1","pages":"175"},"PeriodicalIF":0.0,"publicationDate":"2018-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/IJECB.2018.092257","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44827732","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}
Pub Date : 2018-06-14DOI: 10.1504/IJECB.2018.10013561
Xin Wang, Yue Ma, B. Hou
In order to find out the change of loading on lower limbs associated with different walking speeds, 15 young males and 15 females were tested in different walking speeds with barefoot. The kinematics and kinetic dates were collected by Coda motion capture system, ATMI force platform. Knee forces (KF) were calculated by anybody software. The results shows that with increase of walking speed, the heel reaction force in sagittal and vertical axis increases, which results in a weaker stability. The forces on the knee in three directions becomes significantly higher when walking at a faster speed, which results in an increase in the load and the risk of knee cartilage and ligament injury was increased too.
{"title":"Analysis on the gait of lower limbs in different walking speed","authors":"Xin Wang, Yue Ma, B. Hou","doi":"10.1504/IJECB.2018.10013561","DOIUrl":"https://doi.org/10.1504/IJECB.2018.10013561","url":null,"abstract":"In order to find out the change of loading on lower limbs associated with different walking speeds, 15 young males and 15 females were tested in different walking speeds with barefoot. The kinematics and kinetic dates were collected by Coda motion capture system, ATMI force platform. Knee forces (KF) were calculated by anybody software. The results shows that with increase of walking speed, the heel reaction force in sagittal and vertical axis increases, which results in a weaker stability. The forces on the knee in three directions becomes significantly higher when walking at a faster speed, which results in an increase in the load and the risk of knee cartilage and ligament injury was increased too.","PeriodicalId":90184,"journal":{"name":"International journal of experimental and computational biomechanics","volume":"4 1","pages":"204"},"PeriodicalIF":0.0,"publicationDate":"2018-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44244395","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}
Pub Date : 2018-06-14DOI: 10.1504/IJECB.2018.10013560
P. Li, Jihe Zhou
In this paper, a comprehensive three-dimensional kinematic quantitative analysis has been applied to analyse the movement and biomechanics of throwing technology of a Chinese excellent women's shot. The filming is conducted with a multi-camera 3D imaging system during the championship. A star high titanium 3D signal TEC V1.0C three-dimensional video analysis software system is used for parsing with the RBI web parsing resolution. The human body model applied is Japan Matsui (16, 22 key parameters). The throwing movement is divided into five main stages: the oscillating acceleration phase, the sliding stage, the transition phase and the last stage of throwing. Research analysis for each phase has focused on different biomechanical characteristics and parameters. The key parameters for the throwing movement of the subject in this work is critically compared to other data of related parameters of the domestic and foreign excellent athletes with reference to the general rule of shot put techniques. The key issues associated with the throwing and future biomechanical training is discussed.
{"title":"Kinematic analysis on sliding shot put","authors":"P. Li, Jihe Zhou","doi":"10.1504/IJECB.2018.10013560","DOIUrl":"https://doi.org/10.1504/IJECB.2018.10013560","url":null,"abstract":"In this paper, a comprehensive three-dimensional kinematic quantitative analysis has been applied to analyse the movement and biomechanics of throwing technology of a Chinese excellent women's shot. The filming is conducted with a multi-camera 3D imaging system during the championship. A star high titanium 3D signal TEC V1.0C three-dimensional video analysis software system is used for parsing with the RBI web parsing resolution. The human body model applied is Japan Matsui (16, 22 key parameters). The throwing movement is divided into five main stages: the oscillating acceleration phase, the sliding stage, the transition phase and the last stage of throwing. Research analysis for each phase has focused on different biomechanical characteristics and parameters. The key parameters for the throwing movement of the subject in this work is critically compared to other data of related parameters of the domestic and foreign excellent athletes with reference to the general rule of shot put techniques. The key issues associated with the throwing and future biomechanical training is discussed.","PeriodicalId":90184,"journal":{"name":"International journal of experimental and computational biomechanics","volume":"4 1","pages":"196"},"PeriodicalIF":0.0,"publicationDate":"2018-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48743208","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}
Pub Date : 2018-06-14DOI: 10.1504/IJECB.2018.10013568
P. Gaur, Khyati Verma, A. Chawla, S. Mukherjee, S. Lalwani, R. Malhotra, Christian C Mayer, Pronoy Ghosh, R. Chitteti
Understanding the failure properties of human aortic tissue at high strain rate loading is important to understand the mechanism of traumatic rupture of aorta (TRA). This study reports 18 uniaxial tensile tests performed on human aortic tissue in the longitudinal direction. Rectangular specimens were obtained from cadaveric human aortic tissue. Uniaxial tensile tests were performed at target strain rates of 0.001 s–1, 65 s–1, 130 s–1and 190 s–1 to failure. High-speed video was used to measure the gripper to gripper displacement. Failure stress and strain were calculated. The load-deformation relationship of aorta is found to be nonlinear and strain rate dependent with higher failure stress and lower effective failure engineering strains at higher strain rates. Across tests, the failure stress ranged from 0.86 MPa to 1.86 MPa and effective failure strain from 13.52% to 10.80%.
了解人体主动脉组织在高应变率载荷下的失效特性，对于了解外伤性主动脉破裂(TRA)的发生机制具有重要意义。本研究报告了18个在人主动脉组织纵向上进行的单轴拉伸试验。矩形标本取自人尸体主动脉组织。在0.001 s - 1,65 s - 1,130 s-1和190 s-1的目标应变速率下进行单轴拉伸试验直至失效。采用高速视频测量夹爪之间的位移。计算了破坏应力和应变。发现主动脉的载荷-变形关系是非线性的，且与应变率有关，在高应变率下，破坏应力越大，有效破坏工程应变越小。试验中，破坏应力范围为0.86 ~ 1.86 MPa，有效破坏应变范围为13.52% ~ 10.80%。
{"title":"High rate failure properties of human aortic tissue under longitudinal extension","authors":"P. Gaur, Khyati Verma, A. Chawla, S. Mukherjee, S. Lalwani, R. Malhotra, Christian C Mayer, Pronoy Ghosh, R. Chitteti","doi":"10.1504/IJECB.2018.10013568","DOIUrl":"https://doi.org/10.1504/IJECB.2018.10013568","url":null,"abstract":"Understanding the failure properties of human aortic tissue at high strain rate loading is important to understand the mechanism of traumatic rupture of aorta (TRA). This study reports 18 uniaxial tensile tests performed on human aortic tissue in the longitudinal direction. Rectangular specimens were obtained from cadaveric human aortic tissue. Uniaxial tensile tests were performed at target strain rates of 0.001 s–1, 65 s–1, 130 s–1and 190 s–1 to failure. High-speed video was used to measure the gripper to gripper displacement. Failure stress and strain were calculated. The load-deformation relationship of aorta is found to be nonlinear and strain rate dependent with higher failure stress and lower effective failure engineering strains at higher strain rates. Across tests, the failure stress ranged from 0.86 MPa to 1.86 MPa and effective failure strain from 13.52% to 10.80%.","PeriodicalId":90184,"journal":{"name":"International journal of experimental and computational biomechanics","volume":"4 1","pages":"125"},"PeriodicalIF":0.0,"publicationDate":"2018-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44563710","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}
Pub Date : 2018-06-14DOI: 10.1504/IJECB.2018.10013557
Hai-Bin Yu, Chottidao Monchai, Yung-Shen Tsai
The purpose of this study was to investigate the plantar force and ground reaction forces of different rope skipping conditions with different sport shoes. Ten subjects were instructed to skip rope with one leg condition (OC) and two legs condition (TC). The conditions included the Novel Pedar-X system was used to collect plantar force information beneath the foot inside the sports shoes. Vertical ground reaction forces (VGRF) of each skip were measured on a force platform. The mean values of each group were calculated for comparison. It was found that the vertical ground reaction force TC (4.46 BW run-shoe and 4.27 BW jump-shoe) were greater than OC (3.18 BW run-shoe and 3.51 BW jump-shoe) (p < 0.001). The results showed that OC with two shoes were significant higher than TC in all the variables of interest of Novel Pedar-X system. The force distribution patterns among two shoes were similar. During landing of rope skipping, plantar force occurred mainly at metatarsal head and hallux and lateral toes.
{"title":"Effects of athletic footwear on plantar force during rope skipping","authors":"Hai-Bin Yu, Chottidao Monchai, Yung-Shen Tsai","doi":"10.1504/IJECB.2018.10013557","DOIUrl":"https://doi.org/10.1504/IJECB.2018.10013557","url":null,"abstract":"The purpose of this study was to investigate the plantar force and ground reaction forces of different rope skipping conditions with different sport shoes. Ten subjects were instructed to skip rope with one leg condition (OC) and two legs condition (TC). The conditions included the Novel Pedar-X system was used to collect plantar force information beneath the foot inside the sports shoes. Vertical ground reaction forces (VGRF) of each skip were measured on a force platform. The mean values of each group were calculated for comparison. It was found that the vertical ground reaction force TC (4.46 BW run-shoe and 4.27 BW jump-shoe) were greater than OC (3.18 BW run-shoe and 3.51 BW jump-shoe) (p < 0.001). The results showed that OC with two shoes were significant higher than TC in all the variables of interest of Novel Pedar-X system. The force distribution patterns among two shoes were similar. During landing of rope skipping, plantar force occurred mainly at metatarsal head and hallux and lateral toes.","PeriodicalId":90184,"journal":{"name":"International journal of experimental and computational biomechanics","volume":"4 1","pages":"184"},"PeriodicalIF":0.0,"publicationDate":"2018-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44052909","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}
Pub Date : 2018-06-14DOI: 10.1504/IJECB.2018.10013572
Khyati Verma, S. Mukherjee, P. Gaur, A. Chawla, R. Malhotra, S. Lalwani
Thoracic injuries incurred during crashes constitute a significant portion of all fatal and non-fatal injuries. Finite element human body models are used to understand the injury mechanisms to critical organs like the heart for improving crash safety. Major insight can be gained into its injury mechanisms by studying its compressive behaviour at strain rates seen in impact (up to 300/s). This study reports a total of 20 compression tests performed on heart tissues at strain rates ranging from 0.001/s to 200/s. Green strain was calculated from displacements which were obtained from analysis of high speed video recordings. Stresses were calculated from the measured force and initial cross-sectional area. The study showed that the response of heart tissue was non-linear and strain rate dependent. The elastic modulus also varied with strain with values ranging from 1.79e-3 MPa to 3.34 MPa at compressive strain of 15% to 46%.
{"title":"High strain rate compressive behaviour of human heart","authors":"Khyati Verma, S. Mukherjee, P. Gaur, A. Chawla, R. Malhotra, S. Lalwani","doi":"10.1504/IJECB.2018.10013572","DOIUrl":"https://doi.org/10.1504/IJECB.2018.10013572","url":null,"abstract":"Thoracic injuries incurred during crashes constitute a significant portion of all fatal and non-fatal injuries. Finite element human body models are used to understand the injury mechanisms to critical organs like the heart for improving crash safety. Major insight can be gained into its injury mechanisms by studying its compressive behaviour at strain rates seen in impact (up to 300/s). This study reports a total of 20 compression tests performed on heart tissues at strain rates ranging from 0.001/s to 200/s. Green strain was calculated from displacements which were obtained from analysis of high speed video recordings. Stresses were calculated from the measured force and initial cross-sectional area. The study showed that the response of heart tissue was non-linear and strain rate dependent. The elastic modulus also varied with strain with values ranging from 1.79e-3 MPa to 3.34 MPa at compressive strain of 15% to 46%.","PeriodicalId":90184,"journal":{"name":"International journal of experimental and computational biomechanics","volume":"4 1","pages":"152"},"PeriodicalIF":0.0,"publicationDate":"2018-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48342665","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}
Pub Date : 2018-06-14DOI: 10.1504/IJECB.2018.10013562
Bhaskar Kumar Madeti, C. S. Rao
Implants are compared with suitable material combinations. UHMWPE material is used for interface component and TZP is used for tibia plateau component (lower component) and intercondylar groove (upper component) in knee joint. The finite element analysis is performed for the knee implant for 600 N and for knee implant components for 600 N and 1,000 N body weights are considered. This study reveals the fact in case of any misalignment of components; the finite element analysis is performed for components individually in order to determine maximum possible von Mises stresses. Grid convergence is performed in the present analysis.
{"title":"Finite element analysis for knee implants with suitable material combinations","authors":"Bhaskar Kumar Madeti, C. S. Rao","doi":"10.1504/IJECB.2018.10013562","DOIUrl":"https://doi.org/10.1504/IJECB.2018.10013562","url":null,"abstract":"Implants are compared with suitable material combinations. UHMWPE material is used for interface component and TZP is used for tibia plateau component (lower component) and intercondylar groove (upper component) in knee joint. The finite element analysis is performed for the knee implant for 600 N and for knee implant components for 600 N and 1,000 N body weights are considered. This study reveals the fact in case of any misalignment of components; the finite element analysis is performed for components individually in order to determine maximum possible von Mises stresses. Grid convergence is performed in the present analysis.","PeriodicalId":90184,"journal":{"name":"International journal of experimental and computational biomechanics","volume":"4 1","pages":"113"},"PeriodicalIF":0.0,"publicationDate":"2018-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41677145","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}
Pub Date : 2018-06-14DOI: 10.1504/ijecb.2018.10013563
Z. Gao, Liang Cheng, Jihe Zhou, Shuai Wang
Anterior cruciate ligament (ACL) injury is one of the most common knee injuries for most athletes and sports-active people. Arthroscopic reconstruction is the preferred treatment. Rebuilding ACL for the rapid return to pre-injury level movement and function is an important goal for athletes. In this paper, the use of isokinetic strength training methods for athletes after ACL injury rehabilitation effect is reported. Thirty-one knee anterior cruciate ligament reconstruction athletes were divided into two groups and were respectively subjected to 12 weeks' traditional rehabilitation training and isokinetic strength training. It was found that constant strength training of the knee joint could improve the muscle strength of the athletes more quickly which provides better rehabilitation training for the postoperative recovery of athletes to return to the track.
{"title":"Study of isokinetic strength training's rehabilitating effects on elite athletes after knee joint ACL reconstruction surgery","authors":"Z. Gao, Liang Cheng, Jihe Zhou, Shuai Wang","doi":"10.1504/ijecb.2018.10013563","DOIUrl":"https://doi.org/10.1504/ijecb.2018.10013563","url":null,"abstract":"Anterior cruciate ligament (ACL) injury is one of the most common knee injuries for most athletes and sports-active people. Arthroscopic reconstruction is the preferred treatment. Rebuilding ACL for the rapid return to pre-injury level movement and function is an important goal for athletes. In this paper, the use of isokinetic strength training methods for athletes after ACL injury rehabilitation effect is reported. Thirty-one knee anterior cruciate ligament reconstruction athletes were divided into two groups and were respectively subjected to 12 weeks' traditional rehabilitation training and isokinetic strength training. It was found that constant strength training of the knee joint could improve the muscle strength of the athletes more quickly which provides better rehabilitation training for the postoperative recovery of athletes to return to the track.","PeriodicalId":90184,"journal":{"name":"International journal of experimental and computational biomechanics","volume":"4 1","pages":"209"},"PeriodicalIF":0.0,"publicationDate":"2018-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49557119","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}
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