International Biomechanics最新文献_第4页

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

The effect of intracortical bone pin on shoulder kinematics during dynamic activities. 皮质内骨针对动态活动中肩关节运动学的影响

International Biomechanics Pub Date : 2019-12-01 DOI: 10.1080/23335432.2019.1633958

Maryam Hajizadeh, Benjamin Michaud, Mickael Begon

{"title":"The effect of intracortical bone pin on shoulder kinematics during dynamic activities.","authors":"Maryam Hajizadeh, Benjamin Michaud, Mickael Begon","doi":"10.1080/23335432.2019.1633958","DOIUrl":"10.1080/23335432.2019.1633958","url":null,"abstract":"Intracortical bone pins are introduced as gold standard for analysing skeletal motion because of eliminating soft tissue artefact. However, excluding this methodological error might be in cost of intervening movement pattern by local anaesthesia and pain of external tool within body. The purpose of this study was to examine whether intracortical bone pins alter shoulder joint kinematics or coordination. Three subjects were analysed during arm elevation/depression in frontal and sagittal planes. Retroreflective skin markers captured the motion in two sessions, before and after inserting bone pins (SKIN and PIN sessions), respectively. Thoracohumeral and scapulothoracic kinematics and scapulohumeral rhythm (SHR) were compared between two sessions. Thoracohumeral exhibited lower elevation and internal rotation in PIN session especially close to maximum arm elevation. The highest differences were observed for scapulothoracic kinematics, with higher retraction during abduction as well as higher posterior tilt, lateral rotation and retraction during flexion in PIN session. In addition, no systematic changes in SHR between subjects was found. Statistically significant lower SHR in PIN session was observed over 87-100% of thoracohumeral elevation/depression cycle in frontal plane and over 25-61% in sagittal plane. Further studies should treat carefully toward the clinical validity of shoulder joint kinematics after inserting bone pins.","PeriodicalId":52124,"journal":{"name":"International Biomechanics","volume":"6 1","pages":"47-53"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7857305/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39023159","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

Asymmetry and evolution over a one-year period of the upward rotation of the scapula in youth baseball pitchers 青年棒球投手肩胛骨向上旋转一年的不对称性和进化

International Biomechanics Pub Date : 2018-01-01 DOI: 10.1080/23335432.2018.1499441

Erik van der Graaff, B. Kom, Femke van Dis, X. Gasparutto, M. Hoozemans, D. Veeger

{"title":"Asymmetry and evolution over a one-year period of the upward rotation of the scapula in youth baseball pitchers","authors":"Erik van der Graaff, B. Kom, Femke van Dis, X. Gasparutto, M. Hoozemans, D. Veeger","doi":"10.1080/23335432.2018.1499441","DOIUrl":"https://doi.org/10.1080/23335432.2018.1499441","url":null,"abstract":"ABSTRACT The pitching motion is an asymmetric action by which coordination of scapular rotation in the dominant arm might be affected in time and in comparison with the non-dominant arm. The study aimed to compare asymmetry and the evolution of scapular upward rotation over a one-year period. Data were collected twice, before and after a one-year period, from 92 participants (age = 15.1 SD 1.4 years, body height = 177.3 SD 10.9 cm, body weight 69.2 SD 14.5 kg). Scapular motion was tracked at different glenohumeral angles of elevation in the scapular plane: anatomical position (0°), 45°, 90° and 135°. Scapular upward rotation was calculated as the angle between the spinae scapula and the spine. Scapular upward rotation of the dominant arm was 5.1° (95% CI: 2.1°−8.1°) more compared to the non-dominant arm. Age group or glenohumeral angles of elevation did not affect this difference. Scapular upward rotation of the dominant arm decreased 1.9° (95% CI: −0.5° to 4.3°) after a one-year period, however, neither this observation, nor the interaction with age group or elevation angle was significant. These findings may indicate that pitchers could be at risk to develop shoulder injuries especially those that have been associated with scapular asymmetry.","PeriodicalId":52124,"journal":{"name":"International Biomechanics","volume":"5 1","pages":"57 - 62"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23335432.2018.1499441","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45990016","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}

引用次数: 0