Sports Biomechanics最新文献_第7页

Estimation of lower limb joint moments using consumer realistic wearable sensor locations and deep learning - finding the balance between accuracy and consumer viability. 使用消费者真实可穿戴传感器位置和深度学习估计下肢关节力矩-在准确性和消费者可行性之间找到平衡。

IF 2 3区医学

Sports Biomechanics Pub Date : 2025-07-09 DOI: 10.1080/14763141.2025.2526702

Joshua Carter, X Chen, D Cazzola, G Trewartha, E Preatoni

{"title":"Estimation of lower limb joint moments using consumer realistic wearable sensor locations and deep learning - finding the balance between accuracy and consumer viability.","authors":"Joshua Carter, X Chen, D Cazzola, G Trewartha, E Preatoni","doi":"10.1080/14763141.2025.2526702","DOIUrl":"https://doi.org/10.1080/14763141.2025.2526702","url":null,"abstract":"We used raw data from wearable sensors in consumer-realistic locations (replicating watch, arm phone strap, chest strap, etc.) to estimate lower-limb sagittal-plane joint moments during treadmill running and assessed the effect of a reduced number of sensor locations on estimation accuracy. Fifty mixed-ability runners (25 men and 25 women) ran on a treadmill at a range of speeds and gradients. Their data was used to train Long Short-Term Memory (LSTM) models in a supervised fashion. Estimation accuracy was evaluated by comparing model outputs against the criterion signals, calculated from marker-based kinematics and instrumented treadmill kinetics via inverse dynamics. The model that utilised data from all sensor locations achieved the lowest estimation error with a mean relative Root Mean Squared Error (rRMSE) of 12.1%, 9.0%, and 6.7% at the hip, knee, and ankle, respectively. Reducing data input to fewer sensors did not greatly compromise estimation accuracy. For example, a wrist-foot sensor combination only increased estimation error by 0.8% at the hip, and 1.0% at the knee and ankle joints. This work contributes to the development of a field-oriented tool that can provide runners with insight into their joint-level net moment contributions whilst leveraging data from their possible existing wearable sensor locations.","PeriodicalId":49482,"journal":{"name":"Sports Biomechanics","volume":" ","pages":"1-16"},"PeriodicalIF":2.0,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144592732","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

Machine learning-based classification of Taekwondo Poomsae side kick performance using kinematic parameters and physical characteristics. 基于机器学习的跆拳道扑空侧踢动作运动学参数和物理特征分类。

IF 2 3区医学

Sports Biomechanics Pub Date : 2025-07-08 DOI: 10.1080/14763141.2025.2525557

Ui-Jae Hwang, Sung-Hoon Jung, Ho-Chul Ji, Sil-Ah Choi, In-Ju Bang

{"title":"Machine learning-based classification of Taekwondo Poomsae side kick performance using kinematic parameters and physical characteristics.","authors":"Ui-Jae Hwang, Sung-Hoon Jung, Ho-Chul Ji, Sil-Ah Choi, In-Ju Bang","doi":"10.1080/14763141.2025.2525557","DOIUrl":"https://doi.org/10.1080/14763141.2025.2525557","url":null,"abstract":"To develop and validate machine learning (ML) models for classifying Taekwondo Poomsae side kick (SK) performance using kinematic parameters and physical function characteristics. Forty collegiate Taekwondo Poomsae athletes performed SKs with both legs. Two models were developed: a kinematic model incorporating SK and pelvic tilt angles at face and maximal heights, and a physical function model including range of motion measurements and Y-balance test scores. Performance quality was assessed by an expert evaluator using standardised criteria. Five ML algorithms were tested, and their performance was evaluated using area under the curve (AUC) analysis. Random forest classifiers demonstrated excellent performance in both models (kinematic model: AUC = 0.930, accuracy = 89.3%; physical function model: AUC = 0.930, accuracy = 89.3%). In the kinematic model, SK angle at maximal height emerged as the strongest predictor. For the physical function model, Y-balance test composite score showed the largest impact. These findings represent a substantial improvement over conventional subjective assessment methods by providing quantifiable, objective classification with high accuracy. ML algorithms can effectively classify Taekwondo SK performance using both kinematic and physical function parameters. SK angle at maximal height and dynamic balance emerged as the most important predictors in their respective models, providing quantitative criteria for performance assessment.","PeriodicalId":49482,"journal":{"name":"Sports Biomechanics","volume":" ","pages":"1-20"},"PeriodicalIF":2.0,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144585412","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 comparison of reactive strength in elite and sub-elite male and female Australian footballers. 澳大利亚优秀和次优秀男女足球运动员反应力量的比较。

IF 2 3区医学

Sports Biomechanics Pub Date : 2025-07-08 DOI: 10.1080/14763141.2025.2524349

Benjamin M Southey, Lachlan P James, Mark J Connick, Damien J Austin, Brandon M Wellington, Matthew J Green, Tannath J Scott, Dirk R Spits, Emma M Beckman

{"title":"A comparison of reactive strength in elite and sub-elite male and female Australian footballers.","authors":"Benjamin M Southey, Lachlan P James, Mark J Connick, Damien J Austin, Brandon M Wellington, Matthew J Green, Tannath J Scott, Dirk R Spits, Emma M Beckman","doi":"10.1080/14763141.2025.2524349","DOIUrl":"https://doi.org/10.1080/14763141.2025.2524349","url":null,"abstract":"Reactive Strength Index (RSI) correlates to locomotor performance, hence an important strength quality to develop in Australian footballers (AF). However, two common tests, the drop jump (DJ) and 10/5 repeated jump (RJ), have been suggested to reflect different qualities. Therefore, the aim was to compare RSI between the DJ and RJ. Additionally, AF cohort comparisons were made to observe impacts of competition level and sex on RSI. RJ, DJ and Isometric Mid-Thigh Pull (IMTP) tests amongst elite male (AFL, n = 21), female (AFLW, n = 19), and sub-elite male (U18B, n = 19) and female (U18G, n = 19) cohorts were explored over three testing sessions. Coefficient of determination and spearman's rank correlation compared relationships between RJ, DJ and IMTP. Analysis of variance was used to compare strength qualities across AF cohorts. p < 0.05. Results found DJ and RJ had low shared variance (r2) 0.32. Furthermore, cohort comparisons found significant competition level and sex differences between reactive strength qualities. This study found that the RJ and DJ represent different reactive strength qualities, with differences in age and sex found in both. Therefore, both DJ and RJ should be considered when holistically examining reactive strength in AF, and the reactive quality ratio can highlight these relative differences.","PeriodicalId":49482,"journal":{"name":"Sports Biomechanics","volume":" ","pages":"1-14"},"PeriodicalIF":2.0,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144585411","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

Differences in cricket fast bowling kinematics between grass and artificial surface pitches. 板球快速保龄球运动学在草地球场和人造球场之间的差异。

IF 2 3区医学

Sports Biomechanics Pub Date : 2025-07-01 Epub Date: 2024-09-16 DOI: 10.1080/14763141.2024.2394804

Peter Alway, Paul Felton, Iain James, Mark King, Stuart McErlain-Naylor

引用次数: 0

Current iliotibial band syndrome alters patterns of running coordination in male and female runners, but not their levels of coordination variability. 当前的髂胫束综合征会改变男性和女性跑步者的跑步协调模式，但不会改变他们的协调变异水平。

IF 2 3区医学

Sports Biomechanics Pub Date : 2025-07-01 Epub Date: 2024-07-15 DOI: 10.1080/14763141.2024.2368068

Santiago Veiga, Bruno Suarez, Carlos Segovia, Archit Navandar, Javier Rueda, Enrique Navarro

{"title":"Current iliotibial band syndrome alters patterns of running coordination in male and female runners, but not their levels of coordination variability.","authors":"Santiago Veiga, Bruno Suarez, Carlos Segovia, Archit Navandar, Javier Rueda, Enrique Navarro","doi":"10.1080/14763141.2024.2368068","DOIUrl":"10.1080/14763141.2024.2368068","url":null,"abstract":"The aim of the present study was to compare the coordination patterns and levels of coordination variability of healthy and injured runners with iliotibial band syndrome (ITBS). Sixty runners divided into four groups (15 healthy males, 15 healthy females, 15 males with ITBS and 15 females with ITBS) ran at a steady and freely chosen pace on an over-ground track, and their coordination patterns of the lower limbs were calculated during 10 running stances using the vector coding technique. Both male and female runners with ITBS showed a greater dominance of the pelvis segment and the anti-phase patterns in the frontal plane thigh-pelvis coupling (p = 0.001, η2 = 0.36). In addition, injured female runners showed a greater hip adduction dominance, whereas injured males presented a greater anti-phase pattern in the transverse plane-frontal plane hip coupling (p = 0.003, η2 = 0.08). The levels of coordination variability during running stance did not change between ITBS injured and healthy runners in any of the couplings. Currently injured runners with ITBS appeared to present altered coordination patterns on the hip couplings that were partly dependent on gender but did not lead to changes in the coordination variability levels.","PeriodicalId":49482,"journal":{"name":"Sports Biomechanics","volume":" ","pages":"1865-1878"},"PeriodicalIF":2.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141617488","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

Adjustment of segmental rotations to achieve both racket speed and accuracy at various impact heights during a two-handed backhand stroke. 在双手反手击球过程中，调整分段旋转以实现不同击球高度下的球拍速度和准确性。

IF 2 3区医学

Sports Biomechanics Pub Date : 2025-07-01 Epub Date: 2024-08-08 DOI: 10.1080/14763141.2024.2388562

Sichao Zhang, Natsuki Sado, Norihisa Fujii

{"title":"Adjustment of segmental rotations to achieve both racket speed and accuracy at various impact heights during a two-handed backhand stroke.","authors":"Sichao Zhang, Natsuki Sado, Norihisa Fujii","doi":"10.1080/14763141.2024.2388562","DOIUrl":"10.1080/14763141.2024.2388562","url":null,"abstract":"This study investigated the influence of impact height and competitive level on racket speed and stroke accuracy by analysing segmental angular kinematics under a random ball condition. High- (HQ, n = 7) and low-quality (LQ, n = 7) groups were determined by k-means clustering of the ratio of ball landing in the target (accuracy) and racket speed decrease. HQ showed higher accuracy (48.3% vs. 32.4%), less speed decrease at lower impact heights (-4.4% vs. -10.3%) and better competitive level ranking [median (1st-3rd quartiles); 4 (2-7)] than LQ [10 (8-13)]. HQ produced greater racket speed (24.4 vs. 21.6 m/s), especially with a notable horizontal velocity (23.8 vs. 20.8 m/s) of the racket at lower impact height, which was attributed to the central role of greater angular velocity of pelvis and thorax in the hitting direction. Both groups showed similar adjustment mechanisms that due to the decrease in angular velocity of pelvis, players increased the relative rotation angle between pelvis and thorax to maintain angular velocity of thorax when transitioning from low to high impact heights. Our findings suggest that players should emphasise the coordination between pelvic and thoracic rotations according to impact heights to maintain racket speed while controlling ball landing position.","PeriodicalId":49482,"journal":{"name":"Sports Biomechanics","volume":" ","pages":"1990-2005"},"PeriodicalIF":2.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141908165","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

Relationships between upper trunk rotation kinematics and arm fatigue after repetitive pitching among baseball pitchers. 棒球投手重复投球后上躯干旋转运动学与手臂疲劳之间的关系。

IF 2 3区医学

Sports Biomechanics Pub Date : 2025-07-01 Epub Date: 2024-11-21 DOI: 10.1080/14763141.2024.2431901

Koya Mine, Mark Jones, Steve Saunders, Ben Onofrio, Robert G Crowther, Steve Milanese

{"title":"Relationships between upper trunk rotation kinematics and arm fatigue after repetitive pitching among baseball pitchers.","authors":"Koya Mine, Mark Jones, Steve Saunders, Ben Onofrio, Robert G Crowther, Steve Milanese","doi":"10.1080/14763141.2024.2431901","DOIUrl":"10.1080/14763141.2024.2431901","url":null,"abstract":"Early upper trunk rotation during baseball pitching has been associated with higher upper-limb kinetics. However, its relationship with arm fatigue after repetitive pitching is unclear. This study aimed to investigate associations between upper trunk rotation kinematics and arm fatigue. A total of 14 healthy male pitchers (age 27.1 ± . 9.0 yrs) threw 45 pitches across three innings. Pitching mechanics and ball velocity were assessed using 3-D motion analysis (Vicon, UK) and Rapsodo (Rapsodo, USA). Subjective arm fatigue was assessed by CR-10 Borg scale, whereas grip and shoulder external rotation strength were evaluated before and after pitching sessions. Ball velocity and the timing of upper trunk rotation did not change significantly throughout the three innings. Three-inning pitching produced significant levels of subjective and objective arm fatigue. The onset timing of upper trunk rotation (OTUTR) had significant effects on CR-10 Borg scale and ball velocity. The magnitude of effect of OTUTR on ball velocity may be clinically significant. These findings suggest that the timing of upper trunk rotation may not significantly affect arm fatigue with relatively low pitch counts, and early OTUTR may lead to early reduction in ball velocity.","PeriodicalId":49482,"journal":{"name":"Sports Biomechanics","volume":" ","pages":"2134-2147"},"PeriodicalIF":2.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142689399","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

Profiling biomechanical abilities during sprint front-crawl swimming using IMU and functional clustering of variabilities. 利用 IMU 和变异性功能聚类分析冲刺前爬泳过程中的生物力学能力。

IF 2 3区医学

Sports Biomechanics Pub Date : 2025-07-01 Epub Date: 2024-06-18 DOI: 10.1080/14763141.2024.2368064

Antoine Bouvet, Robin Pla, Erwan Delhaye, Guillaume Nicolas, Nicolas Bideau

{"title":"Profiling biomechanical abilities during sprint front-crawl swimming using IMU and functional clustering of variabilities.","authors":"Antoine Bouvet, Robin Pla, Erwan Delhaye, Guillaume Nicolas, Nicolas Bideau","doi":"10.1080/14763141.2024.2368064","DOIUrl":"10.1080/14763141.2024.2368064","url":null,"abstract":"This study aims to profile biomechanical abilities during sprint front crawl by identifying technical stroke characteristics, in light of performance level. Ninety-one recreational to world-class swimmers equipped with a sacrum-worn IMU performed 25 m all-out. Intra and inter-cyclic 3D kinematical variabilities were clustered using a functional double partition model. Clusters were analysed according to (1) swimming technique using continuous visualisation and discrete features (standard deviation and jerk cost) and (2) performance regarding speed and competition calibre using respectively one-way ANOVA and Chi-squared test as well as Gamma statistics. Swimmers displayed specific technical profiles of intra-cyclic (smoothy and jerky) and inter-cyclic stroke regulation (low, moderate and high repeatability) significantly discriminated by speed (p < 0.001, η2 = 0.62) and performance calibre (p < 0.001, V = 0.53). We showed that combining high levels of both kinds of variability (jerky + low repeatability) are associated with highest speed (1.86 ± 0.12 m/s) and competition calibre (ℽ = 0.75, p < 0.001). It highlights the crucial importance of variabilities combination. Technical skills might be driven by a specific alignment of stroke pattern and its associated dispersion according to the task constraints. This data-driven approach can assist eyes-based technical evaluation. Targeting the development of an explosive swimming style with a high level of body stability should be considered during training of sprinters.","PeriodicalId":49482,"journal":{"name":"Sports Biomechanics","volume":" ","pages":"1844-1864"},"PeriodicalIF":2.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141421557","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 performance indicators and reference values for turn performance in elite youth, junior and adult swimmers. 青年、少年和成年精英游泳运动员转弯成绩的关键性能指标和参考值。

IF 2 3区医学

Sports Biomechanics Pub Date : 2025-07-01 Epub Date: 2024-10-02 DOI: 10.1080/14763141.2024.2409657

Dennis-Peter Born, David Burkhardt, Markus Buck, Laurie Schwab, Michael Romann

{"title":"Key performance indicators and reference values for turn performance in elite youth, junior and adult swimmers.","authors":"Dennis-Peter Born, David Burkhardt, Markus Buck, Laurie Schwab, Michael Romann","doi":"10.1080/14763141.2024.2409657","DOIUrl":"10.1080/14763141.2024.2409657","url":null,"abstract":"This study aimed to determine kinematic and kinetic key performance indicators (KPI) of swimming turn performance using principal component analysis (PCA) and multiple linear regression analysis and provide reference values using percentiles. Touch and tumble turn performances of male (n = 68) and female (n = 48) Swiss national team members from three age categories-adult (20.2 ± 2.7 yrs, 790 ± 57 points), junior (16.2 ± 0.8 yrs, 729 ± 53 points) and youth swimmers (14.4 ± 1.0 years of age, 667 ± 53 World Aquatics swimming points, respectively)-were assessed with a motion analysis system equipped with a force plate on the pool wall, one over- and four underwater cameras sampling forces at 500 Hz and footages at 100 Hz. The PCA reduced the 27 original variables by up to 15% depending on turn type and age category using Varimax component loading of >0.6 and explained up to 91% of the total variance. The highest Varimax component loadings for each principal component were used to determine KPI for each turn type and age category using multiple-regression analysis with total turn time as dependent variable. These KPI should be used to interpret turn performances and identify individual swimmers' strengths, weaknesses and future potentials with the help of the percentiles as reference values.","PeriodicalId":49482,"journal":{"name":"Sports Biomechanics","volume":" ","pages":"2085-2105"},"PeriodicalIF":2.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142362412","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

Should all athletes use the same twisting strategy? The role of anthropometry in the personalisation of optimal acrobatic techniques. 所有运动员都应使用相同的扭转策略吗？人体测量在个性化最佳杂技技术中的作用。

IF 2 3区医学

Sports Biomechanics Pub Date : 2025-07-01 Epub Date: 2024-09-03 DOI: 10.1080/14763141.2024.2394799

Eve Charbonneau, Lisa Sechoir, Francisco Pascoa, Mickaël Begon

{"title":"Should all athletes use the same twisting strategy? The role of anthropometry in the personalisation of optimal acrobatic techniques.","authors":"Eve Charbonneau, Lisa Sechoir, Francisco Pascoa, Mickaël Begon","doi":"10.1080/14763141.2024.2394799","DOIUrl":"10.1080/14763141.2024.2394799","url":null,"abstract":"Choosing the best acrobatic technique for each athlete remains a challenge for coaches. Predictive simulations may support coaches, but only a few athlete morphologies have been simulated yet. It is assumed that the optimal acrobatic techniques are somehow generalisable across athletes. However, anthropometry characteristics can influence the twist rotation outcome of an acrobatic technique. Our objective was to assess the differences in optimal techniques caused by the anthropometric differences between athletes. Anthropometry-specific techniques of double pike forward somersaults ending with <math><mn>1</mn><mrow><mfrac><mn>1</mn><mn>2</mn></mfrac></mrow></math> or <math><mn>2</mn><mrow><mfrac><mn>1</mn><mn>2</mn></mfrac></mrow></math> twists were generated using predictive simulations and the measurements of 18 acrobatic athletes presenting a wide range of anthropometry. We found that anthropometry had an impact on the optimal acrobatic techniques by modifying the amplitude of the strategies used or, more drastically, by modifying the strategies used. Some athletes had a morphological advantage for twist creation, which was measured using the combined twist potential, a metric introduced in the current study. This metric was very strongly correlated with the complexity of the techniques; models with an advantage for twist creation needed fewer/shorter limb movements to generate twists. This research shows that coaches should consider their athletes' anthropometry to offer them better guidance.","PeriodicalId":49482,"journal":{"name":"Sports Biomechanics","volume":" ","pages":"2021-2041"},"PeriodicalIF":2.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142120979","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