Sports Biomechanics最新文献_第6页

Comparison of foot pressure distribution and foot kinematics in undulatory underwater swimming between performance levels. 比较不同水平水下起伏游泳的脚压分布和脚部运动学。

IF 2.2 3区医学

Sports Biomechanics Pub Date : 2024-05-06 DOI: 10.1080/14763141.2024.2341014

Daiki Koga, Yusaku Nakazono, Takaaki Tsunokawa, Yasuo Sengoku, Shigetada Kudo, Hideki Takagi

{"title":"Comparison of foot pressure distribution and foot kinematics in undulatory underwater swimming between performance levels.","authors":"Daiki Koga, Yusaku Nakazono, Takaaki Tsunokawa, Yasuo Sengoku, Shigetada Kudo, Hideki Takagi","doi":"10.1080/14763141.2024.2341014","DOIUrl":"https://doi.org/10.1080/14763141.2024.2341014","url":null,"abstract":"This study aimed to elucidate the foot kinematics and foot pressure difference characteristics of faster swimmers in undulatory underwater swimming (UUS). In total, eight faster and eight slower swimmers performed UUS in a water flume at a flow velocity set at 80% of the maximal effort swimming velocity. The toe velocity and foot angle of attack were measured using a motion capture system. A total of eight small pressure sensors were attached to the surface of the left foot to calculate the pressure difference between the plantar and dorsal sides of the foot. Differences in the mean values of each variable between the groups were analysed. Compared to the slower swimmers, the faster swimmers exhibited a significantly higher swimming velocity (1.53 ± 0.06 m/s vs. 1.31 ± 0.08 m/s) and a larger mean pressure difference in the phase from the start of the up-kick until the toe moved forward relative to the body (3.88 ± 0.65 kPa vs. 2.66 ± 1.19 kPa). The faster group showed higher toe vertical velocity and toe direction of movement, switching from lateral to medial at the time of generating the larger foot pressure difference in the up-kick, providing insight into the reasons behind the foot kinematics of high UUS performance swimmers.","PeriodicalId":49482,"journal":{"name":"Sports Biomechanics","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140873326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of two-step golf swing drills on rhythm and clubhead speed in competitive juniors 两步式高尔夫挥杆练习对青少年选手挥杆节奏和杆头速度的影响

IF 2.2 3区医学

Sports Biomechanics Pub Date : 2024-04-16 DOI: 10.1080/14763141.2024.2336946

Kanji Mori, Taylor D. North, Kai-Jen Cheng, Seungho Baek, Hunter B. Alvis, Young-Hoo Kwon

引用次数: 0

Comparison of glenohumeral and scapulothoracic kinematics between fastballs and curveballs during baseball pitching 棒球投球过程中快球和曲球的盂肱运动学和肩胛胸运动学比较

IF 2.2 3区医学

Sports Biomechanics Pub Date : 2024-04-15 DOI: 10.1080/14763141.2024.2336950

Benjamin G. Lerch, Jonathan S. Slowik, Glenn S. Fleisig, R. Tyler Richardson

引用次数: 0

Automatic detection of skate strokes in short-track speed skating using one single IMU: validation of a new method 使用单个 IMU 自动检测短道速滑中的滑步：验证一种新方法

IF 2.2 3区医学

Sports Biomechanics Pub Date : 2024-04-11 DOI: 10.1080/14763141.2024.2331174

J. Clément, F. Croteau, M. Gagnon, S. Cros

引用次数: 0

The development of an automated assessment system for resistance training movement. 开发阻力训练动作自动评估系统。

IF 2.2 3区医学

Sports Biomechanics Pub Date : 2024-03-21 DOI: 10.1080/14763141.2024.2329066

Rylea Hart, Heather Smith, Yanxin Zhang

{"title":"The development of an automated assessment system for resistance training movement.","authors":"Rylea Hart, Heather Smith, Yanxin Zhang","doi":"10.1080/14763141.2024.2329066","DOIUrl":"https://doi.org/10.1080/14763141.2024.2329066","url":null,"abstract":"Portable data collection devices and machine learning (ML) have been combined in autonomous movement analysis models for resistance training (RT) movements. However, input features for these models were mostly extracted empirically and subsequent models demonstrated limited interpretability and generalisability to real-world settings. This study aimed to investigate the utility of interpretable and generalisable modelling techniques and several data-driven feature extraction (FE) methods. This was achieved by developing machine learning movement analysis models for the barbell back squat and deadlift using markerless motion capture. 61 participants performed submaximal and maximal repetitions of both RT movements. Movement data was collected using two Azure Kinect cameras. Joint and segment kinematic variables were calculated from the collected depth imaging, and input features were extracted using traditional, manual FE methods and novel data-driven techniques. Classifiers were developed for several predefined technical deviations for both movements. Many of the addressed technical deviations could be classified with good levels of accuracy (≥70%) while the remainder were poor (55%-60%). Additionally, data-driven FE techniques were comparable to previous, traditional FE methods. Interpretable and generalisable modelling techniques can be utilised to good effect for certain classification tasks while data-driven FE techniques did not provide a consistent advantage over traditional FE methods.","PeriodicalId":49482,"journal":{"name":"Sports Biomechanics","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140186082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A biomechanical report of an acute lateral ankle sprain during a handball-specific cutting movement. 手球特定切削动作中急性外踝扭伤的生物力学报告。

IF 2.2 3区医学

Sports Biomechanics Pub Date : 2024-03-07 DOI: 10.1080/14763141.2024.2319134

Timo Bagehorn, Kevin Bill, Patrick Mai, Tron Krosshaug, Uwe G Kersting

{"title":"A biomechanical report of an acute lateral ankle sprain during a handball-specific cutting movement.","authors":"Timo Bagehorn, Kevin Bill, Patrick Mai, Tron Krosshaug, Uwe G Kersting","doi":"10.1080/14763141.2024.2319134","DOIUrl":"10.1080/14763141.2024.2319134","url":null,"abstract":"Biomechanical measurements of accidental ankle sprain injuries are rare but make important contributions to a more detailed understanding of the injury mechanism. In this case study, we present the kinematics and kinetics of a lateral ankle sprain of a female athlete performing handball-specific fake-and-cut manoeuvres. Three-dimensional kinematics and kinetics were recorded and six previously performed trials were used as reference. Plantarflexion, inversion, and internal rotation angles were substantially larger than the reference trials and peaked between 190 and 200 ms after initial ground contact. We observed a highly increased inversion and internal rotation moment. However, compared to the non-injury trials the data also revealed a reduction in the second dorsiflexion moment peak. Ground reaction forces were lower throughout the injury trial. Other parameters at initial ground contact including ankle and hip position, step length, and the traction coefficient indicate that a preparatory maladjustment occurred. This study adds valuable contributions to the understanding of lateral ankle sprains by building upon previously published reports and considering the shoe-surface interaction as an important factor for injury.","PeriodicalId":49482,"journal":{"name":"Sports Biomechanics","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140050832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Key technical factors for elite 50 m rifle 3 positions shooting performance. 精英 50 米步枪 3 种姿势射击性能的关键技术因素。

IF 2.2 3区医学

Sports Biomechanics Pub Date : 2024-02-25 DOI: 10.1080/14763141.2024.2319130

Diandong Lang, Fei Wang, Nianhui Wang, Tao Yang

{"title":"Key technical factors for elite 50 m rifle 3 positions shooting performance.","authors":"Diandong Lang, Fei Wang, Nianhui Wang, Tao Yang","doi":"10.1080/14763141.2024.2319130","DOIUrl":"https://doi.org/10.1080/14763141.2024.2319130","url":null,"abstract":"The purpose of this study was to analyse the differences on the shooting score and shooting technical parameters with 50 m rifle three positions, and to find the key technical factors of shooting performance in international-level 50 m rifle shooters. A SCATT MX-02 optoelectronic shooting test system was used to collect shooting score and shooting technical variables. There was a significant effect of shooting position in shooting performance, aiming accuracy, stability of hold, stability of triggering (ANOVA, position, p < 0.05). PCA identified four principal components from 8 shooting technical variables, namely stability of hold, aiming accuracy, stability of triggering and aiming time. PCR indicated that these four components were able to account for 67.1% of the variance in standing shooting, 75.9% in kneeling, and 80.2% in prone. From these, the aiming ability was the most important component, which could explain 28.5% of the variance in standing shooting, 38.4% in kneeling, and 33.8% in prone. With the help of optoelectronic training system, these components should be in focus by coaches and athletes when conducting tests and training.","PeriodicalId":49482,"journal":{"name":"Sports Biomechanics","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139974205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Does scapular dysfunction alter scapular muscles activity and kinematics during swim stroke motion on adolescent swimmers? 肩胛骨功能障碍是否会改变青少年游泳运动员在划水动作中肩胛骨肌肉的活动和运动学特性？

IF 2.2 3区医学

Sports Biomechanics Pub Date : 2024-02-21 DOI: 10.1080/14763141.2024.2315257

Takao Mise, Takeyasu Kurita, Shohei Kamakari, Hiroshi Akuzawa, Tomoki Oshikawa, Naoto Matsunaga, Koji Kaneoka

引用次数: 0

Comparison of ground reaction force among stride types in baseball pitching. 棒球投球中不同步法的地面反作用力比较。

IF 2.2 3区医学

Sports Biomechanics Pub Date : 2024-02-19 DOI: 10.1080/14763141.2024.2315241

Shu-Wei Chen, Wen-Tzu Tang, Jung-Tang Kung, Tsung-Ying Hung, Wei-Hsuan Lin, Yu-Lin Chen, Daniel J Burgee

引用次数: 0

Effects of different initial speeds on subsequent glide and underwater undulatory swimming. 不同的初始速度对后续滑行和水下起伏游泳的影响。

IF 2.2 3区医学

Sports Biomechanics Pub Date : 2024-02-19 DOI: 10.1080/14763141.2024.2319127

Keisuke Kobayashi Yamakawa, Rena Nishiwaki, Tsuyoshi Takeda

{"title":"Effects of different initial speeds on subsequent glide and underwater undulatory swimming.","authors":"Keisuke Kobayashi Yamakawa, Rena Nishiwaki, Tsuyoshi Takeda","doi":"10.1080/14763141.2024.2319127","DOIUrl":"https://doi.org/10.1080/14763141.2024.2319127","url":null,"abstract":"This study aimed to investigate the effect of different initial speeds on the performance during underwater undulatory swimming (UUS). The study included 13 female swimmers. Each participant was asked to perform a 15-m maximum UUS, starting with four different push-off speeds. The experiment was recorded using three underwater cameras; subsequently, a two-dimensional motion analysis was conducted. Statistical parametric mapping (SPM) was employed to identify the position where the UUS velocity stabilised. The findings revealed a significant difference in the average swimming velocities during the first cycle of UUS, which was attributed to the variation in initial speed (p < 0.05) while there is no significant difference in the middle and final cycles. The results of SPM analysis suggested that differences in UUS velocity became negligible after approximately 6-m position from the pool wall, regardless of variations in push-off velocity. Furthermore, it was confirmed that swimmers can reach their maximum achievable UUS velocity at approximately 5-m position, even if they fail to execute an effective push-off from the wall. These findings offer valuable insights for future UUS studies, specifically in choosing suitable cycles for analysis.","PeriodicalId":49482,"journal":{"name":"Sports Biomechanics","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139906686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0