International Biomechanics最新文献_第4页

An exploration of the differences in hip strength, gluteus medius activity, and trunk, pelvis, and lower-limb biomechanics during different functional tasks. 探讨不同功能任务中髋关节力量、臀中肌活动、躯干、骨盆和下肢生物力学的差异。

International Biomechanics Pub Date : 2020-12-01 DOI: 10.1080/23335432.2020.1728381

Komsak Sinsurin, Raul Valldecabres, Jim Richards

{"title":"An exploration of the differences in hip strength, gluteus medius activity, and trunk, pelvis, and lower-limb biomechanics during different functional tasks.","authors":"Komsak Sinsurin, Raul Valldecabres, Jim Richards","doi":"10.1080/23335432.2020.1728381","DOIUrl":"https://doi.org/10.1080/23335432.2020.1728381","url":null,"abstract":"The purpose of the study was to explore differences in the coronal biomechanics of the trunk, pelvis, hip, and knee joints, and gluteus medius muscle activity (GMed) during walking and step down from two riser heights. Joint kinematics and kinetics from 20 healthy participants were recorded using a 10-camera Qualisys system and force plates, and GMed EMG was recorded using a Delsys Trigno system. Hip abductor strength was measured using a hand-held dynamometer. Pelvic obliquity and lateral trunk bending excursions were significantly higher in walking than in step-down tasks. Significantly greater knee adduction moments were seen during both step-down tasks compared to level walking with significantly greater GMed activity. However, a significant interaction between side and task was seen for hip adduction moment, with step-down tasks showing lower hip moments than during walking, with greater peak hip moments being more apparent in the dominant limb. This suggests the GMed has a greater stabilizing role during the step-down tasks, although walking required a greater mechanical demand. Health professionals should expect to find less excursion of lateral trunk bending in step-down tasks compared to level walking and consider that GMed has different roles in these two tasks.","PeriodicalId":52124,"journal":{"name":"International Biomechanics","volume":" ","pages":"35-43"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23335432.2020.1728381","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38990390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Stress and strain propagation on infant skull from impact loads during falls: a finite element analysis. 婴儿颅骨在跌落过程中受冲击载荷的应力和应变传播:有限元分析。

International Biomechanics Pub Date : 2020-12-01 DOI: 10.1080/23335432.2020.1719196

F J Burgos-Flórez, Diego Alexander Garzón-Alvarado

{"title":"Stress and strain propagation on infant skull from impact loads during falls: a finite element analysis.","authors":"F J Burgos-Flórez, Diego Alexander Garzón-Alvarado","doi":"10.1080/23335432.2020.1719196","DOIUrl":"https://doi.org/10.1080/23335432.2020.1719196","url":null,"abstract":"Background and Objective: To simulate infant skull trauma after low height falls when variable degrees of ossification of the sutures are present. Methods: A finite elements model of a four-week-old infant skull was developed for simulating low height impact from 30 cm and 50 cm falls. Two impacts were simulated: An occipito-parietal impact on the lambdoid suture and a lateral impact on the right parietal and six cases were considered: unossified and fully ossified sutures, and sagittal, metopic, right lambdoid and right coronal craniosynostosis. Results: 26 simulations were performed. Results showed a marked increase in strain magnitudes in skulls with unossified sutures and fontanels. Higher deformations and lower Von Mises stress in the brain were found in occipital impacts. Fully ossified skulls showed less overall deformation and lower Von Mises stress in the brain. Results suggest that neonate skull impact when falling backward has a higher probability of resulting in permanent damage. Conclusion: This work shows an initial approximation to the mechanisms underlying TBI in neonates when exposed to low height falls common in household environments, and could be used as a starting point in the design and development of cranial orthoses and protective devices for preventing or mitigating TBI.","PeriodicalId":52124,"journal":{"name":"International Biomechanics","volume":" ","pages":"19-34"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23335432.2020.1719196","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38908224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Accuracy of estimates of cumulative load during a confined activity: bicycling. 在受限活动中累积负荷估计的准确性:骑自行车。

International Biomechanics Pub Date : 2019-12-01 DOI: 10.1080/23335432.2019.1642141

Anthony A Gatti, Monica R Maly

{"title":"Accuracy of estimates of cumulative load during a confined activity: bicycling.","authors":"Anthony A Gatti, Monica R Maly","doi":"10.1080/23335432.2019.1642141","DOIUrl":"https://doi.org/10.1080/23335432.2019.1642141","url":null,"abstract":"Cumulative load reflects the total accumulated load across a loading exposure. Estimated cumulative load can identify individuals with or at risk for pathology. However, there is no research into the accuracy of the estimated cumulative load. This study determined: (1) which impulses, from a 500 revolution bicycling activity, accurately estimate cumulative pedal reaction force; and (2) how many impulses are required to accurately estimate cumulative pedal reaction force over 500 revolutions. Twenty-four healthy adults (mean 23.4 [SD 3.1] years; 11 men) participated. Participants performed three bicycling bouts of 10-min in duration and were randomized to one of two groups (group 1 = self-selected power and prescribed cadence of 80 revolutions per minute; group 2 = prescribed power of 100 W and self-selected cadence). The first 10 revolutions (2%) of the normal pedal reaction force (PRFN) and resultant pedal reaction force (PRFR), and the first five revolutions (1%) of the anterior-posterior reaction force (PRFAP) over-estimated cumulative load. The PRFN, PRFAP, and PRFR required 80 revolutions (16%), 320 revolutions (64%) and 65 revolutions (13%), respectively, to accurately estimate cumulative load across 500 cycles. These findings highlight that the context and amount of data collected are important in producing accurate estimates of cumulative load.","PeriodicalId":52124,"journal":{"name":"International Biomechanics","volume":"6 1","pages":"66-74"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23335432.2019.1642141","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38941975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Metatarsal arch deformation and forefoot kinematics during gait in asymptomatic subjects. 无症状受试者步态中跖弓变形和前足运动学。

International Biomechanics Pub Date : 2019-12-01 DOI: 10.1080/23335432.2019.1642142

Céline Mahieu, Patrick Salvia, Benoît Beyer, Marcel Rooze, Véronique Feipel, Serge Van Sint Jan

{"title":"Metatarsal arch deformation and forefoot kinematics during gait in asymptomatic subjects.","authors":"Céline Mahieu, Patrick Salvia, Benoît Beyer, Marcel Rooze, Véronique Feipel, Serge Van Sint Jan","doi":"10.1080/23335432.2019.1642142","DOIUrl":"https://doi.org/10.1080/23335432.2019.1642142","url":null,"abstract":"This study aimed to investigate both foot arch-shaped architecture and forefoot kinematics during gait. Using a dedicated three-compartment forefoot subdivision, we studied asymptomatic subjects and quantified disorders related to the metatarsal arch. Foot motion and arch shape were measured in 30 healthy subjects with a motion-capture system and force plates. Kinematic results were expressed using a novel model, which anatomically divides the forefoot into three parts. This model integrated the medial longitudinal arch angle and the metatarsal arch height and width. During the first part of stance phase, the medial longitudinal arch flattens and all foot segments move toward dorsiflexion. During terminal stance and preswing phase, medial longitudinal and metatarsal arch restoration was noted with plantarflexion of all segments, an eversion and abduction of the medial forefoot, and an inversion and adduction of the lateral forefoot. Kinematics obtained with the proposed forefoot model corroborates metatarsal arch restoration in late stance. This observation supports the fact that foot architecture is supple until midstance and subsequently creates a rigid lever arm with restored arches to support propulsion. This study's results and methods highlight the potential of the three-compartment model for use in clinical decision-making.","PeriodicalId":52124,"journal":{"name":"International Biomechanics","volume":"6 1","pages":"75-84"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23335432.2019.1642142","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38941976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Statistical parametric mapping of biomechanical one-dimensional data with Bayesian inference. 基于贝叶斯推理的生物力学一维数据的统计参数映射。

International Biomechanics Pub Date : 2019-12-01 DOI: 10.1080/23335432.2019.1597643

Ben Serrien, Maggy Goossens, Jean-Pierre Baeyens

引用次数: 28

Helical axis analysis to quantify humeral kinematics during shoulder rotation. 通过螺旋轴分析量化肩部旋转时的肱骨运动学。

International Biomechanics Pub Date : 2019-12-01 DOI: 10.1080/23335432.2019.1597642

Corrado Cescon, Marco Barbero, Marco Conti, Francesco Bozzetti, Jeremy Lewis

{"title":"Helical axis analysis to quantify humeral kinematics during shoulder rotation.","authors":"Corrado Cescon, Marco Barbero, Marco Conti, Francesco Bozzetti, Jeremy Lewis","doi":"10.1080/23335432.2019.1597642","DOIUrl":"10.1080/23335432.2019.1597642","url":null,"abstract":"Information pertaining to the helical axis during humeral kinematics during shoulder rotation may be of benefit to better understand conditions such as shoulder instability. The aim of this study is to quantify the behavior of humeral rotations using helical axis (HA) parameters in three different conditions. A total of 19 people without shoulder symptoms participated in the experiment. Shoulder kinematics was measured with an optoelectric motion capture system. The subjects performed three different full range rotations of the shoulder. The shoulder movements were analyzed with the HA technique. Four parameters were extracted from the HA of the shoulder during three different full-range rotations: range of movement (RoM), mean angle (MA), axis dispersion (MDD), and distance of their center from the shoulder (D). No significant differences were observed in the RoM for each condition between left and right side. The MA of the axis was significantly lower on the right side compared to the left in each of the three conditions. The MDD was also lower for the right side compared to the left side in each of the three conditions.The four parameters proposed for the analysis of shoulder kinematics showed to be promising indicators of shoulder instability.","PeriodicalId":52124,"journal":{"name":"International Biomechanics","volume":"6 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7857310/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39023162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Data mining the effects of testing conditions and specimen properties on brain biomechanics. 数据挖掘测试条件和样品性质对脑生物力学的影响。

International Biomechanics Pub Date : 2019-12-01 DOI: 10.1080/23335432.2019.1621206

Folly Patterson, Osama AbuOmar, Mike Jones, Keith Tansey, R K Prabhu

{"title":"Data mining the effects of testing conditions and specimen properties on brain biomechanics.","authors":"Folly Patterson, Osama AbuOmar, Mike Jones, Keith Tansey, R K Prabhu","doi":"10.1080/23335432.2019.1621206","DOIUrl":"https://doi.org/10.1080/23335432.2019.1621206","url":null,"abstract":"Traumatic brain injury is highly prevalent in the United States. However, despite its frequency and significance, there is little understanding of how the brain responds during injurious loading. A confounding problem is that because testing conditions vary between assessment methods, brain biomechanics cannot be fully understood. Data mining techniques, which are commonly used to determine patterns in large datasets, were applied to discover how changes in testing conditions affect the mechanical response of the brain. Data at various strain rates were collected from published literature and sorted into datasets based on strain rate and tension vs. compression. Self-organizing maps were used to conduct a sensitivity analysis to rank the testing condition parameters by importance. Fuzzy C-means clustering was applied to determine if there were any patterns in the data. The parameter rankings and clustering for each dataset varied, indicating that the strain rate and type of deformation influence the role of these parameters in the datasets.","PeriodicalId":52124,"journal":{"name":"International Biomechanics","volume":"6 1","pages":"34-46"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23335432.2019.1621206","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39023160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Inter-laboratory and inter-operator reproducibility in gait analysis measurements in pediatric subjects. 儿科受试者步态分析测量的实验室间和操作人员间再现性。

International Biomechanics Pub Date : 2019-12-01 DOI: 10.1080/23335432.2019.1621205

Emilia Scalona, Roberto Di Marco, Enrico Castelli, Kaat Desloovere, Marjolein Van Der Krogt, Paolo Cappa, Stefano Rossi

{"title":"Inter-laboratory and inter-operator reproducibility in gait analysis measurements in pediatric subjects.","authors":"Emilia Scalona, Roberto Di Marco, Enrico Castelli, Kaat Desloovere, Marjolein Van Der Krogt, Paolo Cappa, Stefano Rossi","doi":"10.1080/23335432.2019.1621205","DOIUrl":"https://doi.org/10.1080/23335432.2019.1621205","url":null,"abstract":"The intra-subject, the inter-operator, and the inter-laboratory variabilities are the main sources of uncertainties in gait analysis, and their effects have been partially described in the literature for adult populations. This study aimed to extend the repeatability and reproducibility analysis to a pediatric population, accounting for the effects induced by the intra-subject variations, the measurement setup, the marker set configuration, and the involved operators in placing markers and EMG electrodes. We evaluated kinematic, kinetic and EMG outputs collected from gait analyses performed on two healthy children in two laboratories, by two operators, and with two marker placement protocols. The two involved centers previously defined a common acquisition procedure based on their routine pipelines. The similarity of kinematic, kinetic, and EMG curves were evaluated by means of the coefficients of the Linear Fit Method, and the Mean Absolute Variability with and without the offset among curves. The inter-operator variability was found to be the main contribution to the overall reproducibility of kinematic and kinetic gait data. On the contrary, the main contribution to the variability of the EMG signals was the intra-subject repeatability that is due to the physiological stride to stride muscle activation variability.","PeriodicalId":52124,"journal":{"name":"International Biomechanics","volume":"6 1","pages":"19-33"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23335432.2019.1621205","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39023161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Gait alteration strategies for knee osteoarthritis: a comparison of joint loading via generic and patient-specific musculoskeletal model scaling techniques. 膝关节骨性关节炎的步态改变策略：通过通用和特定患者肌肉骨骼模型缩放技术对关节负荷进行比较。

International Biomechanics Pub Date : 2019-12-01 DOI: 10.1080/23335432.2019.1629839

C M Dzialo, M Mannisi, K S Halonen, M de Zee, J Woodburn, M S Andersen

{"title":"Gait alteration strategies for knee osteoarthritis: a comparison of joint loading via generic and patient-specific musculoskeletal model scaling techniques.","authors":"C M Dzialo, M Mannisi, K S Halonen, M de Zee, J Woodburn, M S Andersen","doi":"10.1080/23335432.2019.1629839","DOIUrl":"10.1080/23335432.2019.1629839","url":null,"abstract":"Gait modifications and laterally wedged insoles are non-invasive approaches used to treat medial compartment knee osteoarthritis. However, the outcome of these alterations is still a controversial topic. This study investigates how gait alteration techniques may have a unique effect on individual patients; and furthermore, the way we scale our musculoskeletal models to estimate the medial joint contact force may influence knee loading conditions. Five patients with clinical evidence of medial knee osteoarthritis were asked to walk at a normal walking speed over force plates and simultaneously 3D motion was captured during seven conditions (0°-, 5°-, 10°-insoles, shod, toe-in, toe-out, and wide stance). We developed patient-specific musculoskeletal models, using segmentations from magnetic resonance imaging to morph a generic model to patient-specific bone geometries and applied this morphing to estimate muscle insertion sites. Additionally, models were created of these patients using a simple linear scaling method. When examining the patients' medial compartment contact force (peak and impulse) during stance phase, a 'one-size-fits-all' gait alteration aimed to reduce medial knee loading did not exist. Moreover, the different scaling methods lead to differences in medial contact forces; highlighting the importance of further investigation of musculoskeletal modeling methods prior to use in the clinical setting.","PeriodicalId":52124,"journal":{"name":"International Biomechanics","volume":"6 1","pages":"54-65"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7857308/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39023164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reliability of a low-cost webcam recording system for three-dimensional lower limb gait analysis. 用于下肢三维步态分析的低成本网络摄像头记录系统的可靠性。

International Biomechanics Pub Date : 2019-12-01 DOI: 10.1080/23335432.2019.1671221

Apiwan Pusara, Sumet Heamawatanachai, Komsak Sinsurin, Chaiyong Jorrakate

{"title":"Reliability of a low-cost webcam recording system for three-dimensional lower limb gait analysis.","authors":"Apiwan Pusara, Sumet Heamawatanachai, Komsak Sinsurin, Chaiyong Jorrakate","doi":"10.1080/23335432.2019.1671221","DOIUrl":"https://doi.org/10.1080/23335432.2019.1671221","url":null,"abstract":"The purposes of this study were to develop and evaluate the test-retest reliability of a specific low-cost three-dimensional webcam recording system (3D-WCRS) and compare its reliability to a standard motion analysis system. Twenty healthy volunteers comprised of 5 males and 15 females with a mean age of 22.90 years and mean BMI of 22.72 kg/m2 were investigated for angles of hip, knee and ankle joints in three planes while walking at a self-selected speed. Intraclass correlation coefficients (ICCs) were used to evaluate as well as compare the test-retest reliability of the 3D-WCRS and standard motion analysis system. Standard error of measurement (SEM) was also analyzed for the purposes of the study. The results exhibited excellent test-retest reliability for the 3D-WCRS (ICCs ranged between 0.93 and 0.99, p = 0.001) in the three joints and planes. The standard motion analysis system demonstrated excellent reliability for all joints and planes (ICCs ranged between 0.99 and 1.00, p = 0.001). Minimal SEM values were observed in both the 3D-WCRS and standard motion analysis systems. Therefore, the developed low-cost 3D-WCRS exhibits good to excellent test-retest reliability. The test-retest reliability of the 3D-WCRS is likely to be comparable to a standard motion analysis system.","PeriodicalId":52124,"journal":{"name":"International Biomechanics","volume":"6 1","pages":"85-92"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23335432.2019.1671221","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38941979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3