发布求助
文献互助 智能选刊 最新文献

International journal of sport biomechanics最新文献

筛选
英文 中文
Design and Evaluation of a Multi-Degree-of-Freedom Foot/Pedal Interface for Cycling 多自由度自行车脚/踏板接口的设计与评价
International journal of sport biomechanics Pub Date : 1992-05-01 DOI: 10.1123/IJSB.8.2.152
D. Wootten, M. Hull
{"title":"Design and Evaluation of a Multi-Degree-of-Freedom Foot/Pedal Interface for Cycling","authors":"D. Wootten, M. Hull","doi":"10.1123/IJSB.8.2.152","DOIUrl":"https://doi.org/10.1123/IJSB.8.2.152","url":null,"abstract":"Described is the design of a foot/pedal interface intended as a research tool in the study of overuse knee injuries in cycling. The interface enables the systematic variation of factors that may affect loads transmitted by the knee joint. It permits two degrees of freedom of movement, inversion/eversion and abduction/adduction rotations, either separately or in combination. The movement permitted by each degree of freedom can be either free or resisted by spring assemblies. Sample data were collected to demonstrate the function of the foot/pedal interface. With no spring resistance, the interface functioned as intended by allowing free movement of the foot. Significant interaction was seen between the two degrees of freedom, with more motion and a larger absolute mean occurring when both degrees of freedom were allowed simultaneously. This emphasizes the need for a multi-degree-of-freedom interface when undertaking a comprehensive study of the factors affecting loads transmitted by the knee.","PeriodicalId":308877,"journal":{"name":"International journal of sport biomechanics","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129036014","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: 8
The Unstable Ankle: A Combined EMG and Biomechanical Modeling Study 踝关节不稳定:肌电图和生物力学模型的联合研究
International journal of sport biomechanics Pub Date : 1992-05-01 DOI: 10.1123/IJSB.8.2.129
J. Karlsson, L. Peterson, Gunnar O. Andréasson, C. Högfors
{"title":"The Unstable Ankle: A Combined EMG and Biomechanical Modeling Study","authors":"J. Karlsson, L. Peterson, Gunnar O. Andréasson, C. Högfors","doi":"10.1123/IJSB.8.2.129","DOIUrl":"https://doi.org/10.1123/IJSB.8.2.129","url":null,"abstract":"A device to simulate ankle motion associated with inversion ankle injury was constructed. This device consists of a trap door that can be tilted 30° from the horizontal plane. Surface EMG electrodes were placed over the peroneus brevis and peroneus longus muscles. The time measured from the tilting of the plate to the first muscular response on the EMG was defined as the reflex time. Twenty individuals with unilateral ankle joint instability were tested. The mechanical ankle joint stability was measured using standardized radiographic measurements, taking into account anterior talar translation and talar tilt. The mean anterior talar translation was 5.9 mm and the mean talar tilt was 3.2° in the stable ankles, compared to 12.7 mm and 10.5° for the unstable ankles. The mean reflex time was 68.8 ms (peroneus longus) and 69.2 ms (peroneus brevis) in the stable ankles as compared to 84.5 ms (peroneus longus) and 81.6 ms (peroneus brevis) in the unstable ankles. Important factors influencing functional instabi...","PeriodicalId":308877,"journal":{"name":"International journal of sport biomechanics","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116722417","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: 74
Comparison of Film and Video Techniques for Estimating Three-Dimensional Coordinates within a Large Field 在大范围内估计三维坐标的电影和视频技术的比较
International journal of sport biomechanics Pub Date : 1992-05-01 DOI: 10.1123/IJSB.8.2.145
R. M. Angulo, J. Dapena
{"title":"Comparison of Film and Video Techniques for Estimating Three-Dimensional Coordinates within a Large Field","authors":"R. M. Angulo, J. Dapena","doi":"10.1123/IJSB.8.2.145","DOIUrl":"https://doi.org/10.1123/IJSB.8.2.145","url":null,"abstract":"This study compared the errors produced with 3-D video and film analysis techniques using the DLT method with fixed cameras when the images cover a wide field of view. The results indicated that with a large field of view (8 meters) the accuracy of video analysis is clearly inferior to that of film analysis. However, within the volume of the control object, both film and video analyses are still precise enough for most practical purposes. Errors were larger in landmarks outside the control object than in the points of the control object. The maximum errors in the calculated positions of external landmarks were particularly large in the video analysis. However, even these rather large errors for points markedly outside the control object may be acceptable. It will depend on the requirements of each particular investigation.","PeriodicalId":308877,"journal":{"name":"International journal of sport biomechanics","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132704679","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: 34
Friction Measurement in Tennis on the Field and in the Laboratory 网球运动场地和实验室的摩擦测量
International journal of sport biomechanics Pub Date : 1992-02-01 DOI: 10.1123/IJSB.8.1.48
B. V. Gheluwe, Eric Deporte
{"title":"Friction Measurement in Tennis on the Field and in the Laboratory","authors":"B. V. Gheluwe, Eric Deporte","doi":"10.1123/IJSB.8.1.48","DOIUrl":"https://doi.org/10.1123/IJSB.8.1.48","url":null,"abstract":"Tennis movements are characterized essentially by lateral displacements, thus external load on the lower extremities is created predominantly by friction generated between shoes and playing surfaces. This study analyzed the behavior of frictional forces and torques produced during an open stance forehand using various playing surfaces and different sport shoes. The frictional data were obtained from 12 advanced players returning a tennis ball fired from a ball machine and hitting a large Kistler force plate located at the base line of the tennis court. Using statistical ANOVA techniques, friction was found to be more sensitive to the choice of playing surface than to the choice of tennis shoe. “Fluid” type surfaces displayed the lowest frictional values in most cases. Additionally, comparison of the frictional data collected during the forehand with the measurements from a standardized laboratory test demonstrated that extrapolation of friction results from laboratory to real field conditions may lead to ...","PeriodicalId":308877,"journal":{"name":"International journal of sport biomechanics","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129593748","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: 12
External Loading at the Knee Joint for Landing Movements in Alpine Skiing 高山滑雪中膝关节着地动作的外部负荷
International journal of sport biomechanics Pub Date : 1992-02-01 DOI: 10.1123/IJSB.8.1.62
L. Read, W. Herzog
{"title":"External Loading at the Knee Joint for Landing Movements in Alpine Skiing","authors":"L. Read, W. Herzog","doi":"10.1123/IJSB.8.1.62","DOIUrl":"https://doi.org/10.1123/IJSB.8.1.62","url":null,"abstract":"The purpose of this study was to determine resultant knee joint forces and moments during a specific movement in Alpine ski racers. The movement analyzed consisted of a landing from a bump and the initiation of recovery (if necessary). Resultant loads were obtained using an inverse dynamics approach. Results of two specific skiers are contrasted, one skier landing in good form, the second skier landing in poor form. The skier landing in poor form exhibited larger knee flexion, and larger knee joint resultant forces and moments than the skier landing in good form. The movement of the skier landing in poor form has been associated with isolated anterior cruciate ligament (ACL) injury. However, the data obtained in this study do not indicate that either skier was in danger of ACL injury.","PeriodicalId":308877,"journal":{"name":"International journal of sport biomechanics","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116469409","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: 28
A Multivariable Analysis of Lower Extremity Kinematic Asymmetry in Running 跑步中下肢运动不对称性的多变量分析
International journal of sport biomechanics Pub Date : 1992-02-01 DOI: 10.1123/IJSB.8.1.11
G. Vagenas, B. Hoshizaki
{"title":"A Multivariable Analysis of Lower Extremity Kinematic Asymmetry in Running","authors":"G. Vagenas, B. Hoshizaki","doi":"10.1123/IJSB.8.1.11","DOIUrl":"https://doi.org/10.1123/IJSB.8.1.11","url":null,"abstract":"This study investigated the phenomenon of kinematic asymmetry of the lower limbs in distance runners. The subjects, 29 male distance runners, were recorded by high-speed filming while running on a motor driven treadmill under two experimental conditions (with running shoes and barefoot). Twelve selected kinematic variables were subjected to multivariate statistical analysis. It was demonstrated that the lower limbs of distance runners possess a multifaceted kinematic asymmetry for touchdown and foot contact as well as for the entire phase of foot support of the running stride. Significant kinematic asymmetries were found in the lower leg angle, rearfoot angle, mediolateral velocity of the foot, and in some temporal variables. Contemporary running shoes seem to significantly change the degree of rearfoot control asymmetry observed in normal barefoot running. The findings of the present study confirm previous data suggesting that the phenomenon of kinematic asymmetry in runners is warranted.","PeriodicalId":308877,"journal":{"name":"International journal of sport biomechanics","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124130211","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: 95
A Perturbation Study of Lower Extremity Motion During Running 跑步时下肢运动的扰动研究
International journal of sport biomechanics Pub Date : 1992-02-01 DOI: 10.1123/IJSB.8.1.30
Wilbert W.L.M. Van Woensel, P. Cavanagh
{"title":"A Perturbation Study of Lower Extremity Motion During Running","authors":"Wilbert W.L.M. Van Woensel, P. Cavanagh","doi":"10.1123/IJSB.8.1.30","DOIUrl":"https://doi.org/10.1123/IJSB.8.1.30","url":null,"abstract":"The present study explored kinematic adaptation in the lower extremity to running in shoes with 10° valgus and varus midsole perturbations. Rearfoot motion and knee flexion/extension data on nine subjects were collected using a Selspot II system during treadmill running in the two test shoes and in a neutral shoe condition. Maximum pronation was significantly altered by an amount approximately the same as the shoe perturbation, but there was no substantial adaptation in the amount of knee flexion. From the rearfoot patterns it was inferred that time to maximum pronation may be an unreliable variable to describe the pattern of rearfoot motion; the two-phase profile using rearfoot velocity may be more useful. It was concluded that certain subtle sagittal plane kinematic adaptations in timing and velocity patterns did occur at the knee in response to the shoe perturbations.","PeriodicalId":308877,"journal":{"name":"International journal of sport biomechanics","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117294880","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: 51
The Effect of Grip Width on Bench Press Performance 握把宽度对卧推机性能的影响
International journal of sport biomechanics Pub Date : 1992-02-01 DOI: 10.1123/IJSB.8.1.1
L. Wagner, S. A. Evans, J. Weir, T. Housh, G. Johnson
{"title":"The Effect of Grip Width on Bench Press Performance","authors":"L. Wagner, S. A. Evans, J. Weir, T. Housh, G. Johnson","doi":"10.1123/IJSB.8.1.1","DOIUrl":"https://doi.org/10.1123/IJSB.8.1.1","url":null,"abstract":"The purpose of this study was to determine the effects of grip width, chest depth, limb lengths, and bar path on the performance of a maximal bench press. Subjects were 24 experienced male weight trainers. Bench press performance was assessed at six different grip widths (G1–G6). Repeated-measures ANOVA with Tukey post hoc comparisons revealed that bench press strength values at the two moderate grip widths (G3 and G4) were significantly greater than either the narrow or wide grip widths. First-order partial correlations showed no significant relationship between strength values and anthropometric variables when adjusted for differences in body weight. Standard two-dimensional cinematographic procedures were used to film a subsample (n = 6) while bench pressing using G1, G3, and G6. The results of the statistical comparisons of bar path indicated that as grip width increased, the horizontal and vertical distance from the bar to the shoulder decreased.","PeriodicalId":308877,"journal":{"name":"International journal of sport biomechanics","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129810541","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: 77
The Effect of Hip Position/Configuration on Anaerobic Power and Capacity in Cycling 髋关节位置/构型对自行车无氧动力和无氧能力的影响
International journal of sport biomechanics Pub Date : 1991-11-01 DOI: 10.1123/IJSB.7.4.359
D. Too
{"title":"The Effect of Hip Position/Configuration on Anaerobic Power and Capacity in Cycling","authors":"D. Too","doi":"10.1123/IJSB.7.4.359","DOIUrl":"https://doi.org/10.1123/IJSB.7.4.359","url":null,"abstract":"The purpose of this investigation was to determine the effect of systematic changes in hip position/configuration on cycling peak anaerobic power (AP) and anaerobic capacity (AC). Fourteen male recreational cyclists (ages 21-32 yrs) were tested in four hip positions (25, 50, 75, and 100°), as defined by the angle formed by the seat tube and a vertical line. Rotating the seat to maintain a backrest perpendicular to the ground induced a systematic decrease in hip angle from the 25 to the 100° position. The Wingate anaerobic cycling test was used on a Monark cycle ergometer with a resistance of 85 gm/kg of the subject’s body mass. Repeated-measures MANOVAs and post hoc tests revealed that AP and AC in the 75° hip position were significantly greater than in the 25 or 100° position and that a second-order function best describes the trend in AP and AC with changes in hip position.","PeriodicalId":308877,"journal":{"name":"International journal of sport biomechanics","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121105377","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: 31
Periscope Systems for Recording the Underwater Motions of a Swimmer 记录游泳者水下运动的潜望镜系统
International journal of sport biomechanics Pub Date : 1991-11-01 DOI: 10.1123/IJSB.7.4.392
J. Hay, J. T. Gerot
{"title":"Periscope Systems for Recording the Underwater Motions of a Swimmer","authors":"J. Hay, J. T. Gerot","doi":"10.1123/IJSB.7.4.392","DOIUrl":"https://doi.org/10.1123/IJSB.7.4.392","url":null,"abstract":"This technical note describes a number of half-periscope devices designed to permit distortion-free records of the underwater motions of a swimmer to be obtained conveniently, at low cost, and without risking damage to the recording equipment. The basic design consists of a camera and camera support system, a mirror and mirror support system, and a wave deflector. Several variations of this half-periscope design and setup are described. The main advantages of the use of such periscope systems are their light construction and the consequent ease with which they can be transported and set up, their versatility with respect to the positions at which they can be placed around a pool, and the flexibility provided by variations in design and setup.","PeriodicalId":308877,"journal":{"name":"International journal of sport biomechanics","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121534905","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: 9
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信
小红书