Sports Biomechanics最新文献_第10页

Evaluating agreement between a high-g and low-g accelerometer for measuring tibial acceleration across a range of running velocities. 评估高重力加速度计和低重力加速度计在一定跑速范围内测量胫骨加速度的一致性。

IF 2 3区医学

Sports Biomechanics Pub Date : 2026-05-01 Epub Date: 2025-10-10 DOI: 10.1080/14763141.2025.2569582

Jasper Wong, Hannah E Wyatt, Chris Whatman, Matt R Cross, Danielle Yang, Kelly Sheerin

{"title":"Evaluating agreement between a high-g and low-g accelerometer for measuring tibial acceleration across a range of running velocities.","authors":"Jasper Wong, Hannah E Wyatt, Chris Whatman, Matt R Cross, Danielle Yang, Kelly Sheerin","doi":"10.1080/14763141.2025.2569582","DOIUrl":"10.1080/14763141.2025.2569582","url":null,"abstract":"Modern inertial measurement units house multiple accelerometers with differing specifications. Previous studies have used both high-g and low-g accelerometers to measure peak tibial acceleration (TA) during running. This dual approach may introduce inconsistencies with data processing due to the different specifications. The purpose of this study was to evaluate the agreement between the high-g and low-g accelerometers in measuring peak axial and resultant TA across a range of running velocities. One hundred recreational runners ran on an athletics track at five self-selected velocities, ranging from very slow to very fast based on their comfortable training pace. Results indicated the difference in agreement between the high-g and low-g accelerometers was curvilinear, with bias shifting towards the high-g accelerometer at higher TA magnitudes. However, the predicted difference was small, only exceeding ±1 g when measuring axial TA approaching its maximum range (16 g). Based on the comparable performance of the high-g and low-g accelerometers, and the relatively high frequency of data clipping in the low-g accelerometer (209 of 495 trials; 42%), it is recommended to use the high-g accelerometer exclusively for measuring TA during running, simplifying data collection and processing requirements.","PeriodicalId":49482,"journal":{"name":"Sports Biomechanics","volume":" ","pages":"673-685"},"PeriodicalIF":2.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145276475","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

Barbell squats in CrossFit athletes: the effects of load and footwear type on trunk flexion and lower limb joints torques at the peak of total support torque. CrossFit运动员杠铃深蹲：负荷和鞋型对躯干屈曲和总支撑扭矩峰值时下肢关节扭矩的影响

IF 2 3区医学

Sports Biomechanics Pub Date : 2026-05-01 Epub Date: 2025-10-27 DOI: 10.1080/14763141.2025.2578351

Daiani de Campos, Eduardo Campos Martins, Giorgio Silvano Ferreira Poletto, Heiliane de Brito Fontana

{"title":"Barbell squats in CrossFit athletes: the effects of load and footwear type on trunk flexion and lower limb joints torques at the peak of total support torque.","authors":"Daiani de Campos, Eduardo Campos Martins, Giorgio Silvano Ferreira Poletto, Heiliane de Brito Fontana","doi":"10.1080/14763141.2025.2578351","DOIUrl":"10.1080/14763141.2025.2578351","url":null,"abstract":"We examined the effects of barbell load and footwear type on hip, knee, and ankle joint torques during barbell squats in CrossFit athletes. Sixteen participants performed squats at 50%, 70%, and 90% of their 3-repetition maximum, wearing either weightlifting shoes or conventional footwear. Kinematic and kinetic data were captured using a three-dimensional analysis system, enabling the calculation of joint torques and trunk flexion angles at the instant of peak total support torque. Peak total support torque increased with load in both footwear conditions, with no interactions between footwear type and load observed for peak total support torque or individual joint contributions. Regardless of load, weightlifting shoes resulted in a lower hip torque contribution (p = 0.017) and a higher knee torque contribution (p = 0.024) compared to conventional shoes. As load increased, knee torque contribution decreased (p < 0.001), while ankle torque contribution increased (p = 0.025), accompanied by, on average, small increases in trunk flexion angle. Peak total support torque and peak trunk flexion did not coincide, potentially explaining the modest effects of load and footwear type observed. Analysis throughout the entire squat cycle is needed to fully understand joint contributions, aiding in optimizing squat techniques and footwear choices.","PeriodicalId":49482,"journal":{"name":"Sports Biomechanics","volume":" ","pages":"763-772"},"PeriodicalIF":2.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145373229","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

Effect of forefoot strike and toe-out running on knee contact forces: a musculoskeletal modelling-based study. 前脚打击和脚趾外跑对膝盖接触力的影响：基于肌肉骨骼模型的研究。

IF 2 3区医学

Sports Biomechanics Pub Date : 2026-05-01 Epub Date: 2025-11-03 DOI: 10.1080/14763141.2025.2573127

R S S Subasinghe Arachchige, G P Y Szeto, C F Du, C M Hung, C H Ko, C W Lau, C H Ngai, A L C Wong, R Kwan, M Sreenivasa, R T H Cheung

{"title":"Effect of forefoot strike and toe-out running on knee contact forces: a musculoskeletal modelling-based study.","authors":"R S S Subasinghe Arachchige, G P Y Szeto, C F Du, C M Hung, C H Ko, C W Lau, C H Ngai, A L C Wong, R Kwan, M Sreenivasa, R T H Cheung","doi":"10.1080/14763141.2025.2573127","DOIUrl":"10.1080/14763141.2025.2573127","url":null,"abstract":"Knee osteoarthritis (OA) is a common degenerative joint condition with significant public health implications. Modifying running biomechanics is a potential strategy to reduce knee joint loading and support long-term maintenance of physical activity in individuals with knee OA. This study investigated the effects of running modifications on knee contact force (KCF) between natural running, forefoot striking (FFS), and toe-out running. Ten healthy participants performed three trials of 20-m overground running for each condition. KCF were estimated using an OpenSim-based musculoskeletal model, and differences across conditions were evaluated using a one-way repeated measures ANOVA. In early stance, toe-out running exhibited higher medial-lateral KCF compared to both natural running (p = 0.017, Cohen's d = 0.92) and FFS (p = 0.003, Cohen's d = 1.28). In late stance, both FFS (p = 0.039, Cohen's d = 0.76) and toe-out (p = 0.011, Cohen's d = 1.01) running exhibited increased medial-lateral KCF relative to natural running. Additionally, FFS generated significantly higher vertical KCF than both natural (p < 0.001, Cohen's d = 2.32) and toe-out running (p < 0.001, Cohen's d = 1.70). Running modifications involving toe-out or FFS resulted in increased KCF, particularly in the medial-lateral direction. These findings suggest such modifications may not effectively reduce joint loading and should be approached with caution in individuals with knee OA.","PeriodicalId":49482,"journal":{"name":"Sports Biomechanics","volume":" ","pages":"700-712"},"PeriodicalIF":2.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145432932","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 ice hockey skating tasks using kinematic data. 基于机器学习的冰球滑冰任务的运动学数据分类。

IF 2 3区医学

Sports Biomechanics Pub Date : 2026-05-01 Epub Date: 2025-10-09 DOI: 10.1080/14763141.2025.2569580

Oussama Jlassi, Ethan W C Wilkie, Matthew Kelly, Philippe J Renaud, David J Pearsall, Shawn M Robbins, Philippe C Dixon

{"title":"Machine learning-based classification of ice hockey skating tasks using kinematic data.","authors":"Oussama Jlassi, Ethan W C Wilkie, Matthew Kelly, Philippe J Renaud, David J Pearsall, Shawn M Robbins, Philippe C Dixon","doi":"10.1080/14763141.2025.2569580","DOIUrl":"10.1080/14763141.2025.2569580","url":null,"abstract":"This study evaluates the ability of body segment kinematic data to identify skating tasks in ice hockey using machine learning models and compares the performance of models trained on different body segments. We employed XGBoost, Support Vector Machine and Random Forest models to classify four primary ice-hockey skating tasks: forward skating start and strides, skating stop & go, and skating into a wrist shot. Trunk, pelvis, thigh, shank, and foot segment centre of mass linear accelerations were derived from retro-reflective markers and used as inputs for feature engineering. The models were trained and evaluated using a 10-fold cross-validation stratified by participant. Overall, the machine learning models demonstrated strong performance, with mean accuracy scores ranging from 86.5% to 98.9%. The pelvis yielded the best overall performance, followed by the trunk and foot, whereas the thigh segment generally exhibited lower accuracies across models. These results indicate that prediction performance depends on the body segment kinematic data used as input. This study highlights the potential of body segment kinematic data for automated identification of ice hockey skating tasks, providing insights into sports analytics and player performance assessment.","PeriodicalId":49482,"journal":{"name":"Sports Biomechanics","volume":" ","pages":"659-672"},"PeriodicalIF":2.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145253565","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

Iliotibial band strain while running around a curve. 髂胫束在绕弯跑时拉伤。

IF 2 3区医学

Sports Biomechanics Pub Date : 2026-05-01 Epub Date: 2025-11-03 DOI: 10.1080/14763141.2025.2573132

Holly A Schmitz, Jeff Mettler, Timothy R Derrick

{"title":"Iliotibial band strain while running around a curve.","authors":"Holly A Schmitz, Jeff Mettler, Timothy R Derrick","doi":"10.1080/14763141.2025.2573132","DOIUrl":"10.1080/14763141.2025.2573132","url":null,"abstract":"The iliotibial band (ITB) stabilises the hip and knee joints during running, but excessive strain can lead to iliotibial band syndrome (ITBS), a common overuse injury in runners. This study aimed to determine if running around a curve influences ITB strain using a musculoskeletal model with active and passive ITB strands. Sixteen runners completed trials running straight and around a curve, with kinematic and ground reaction force data collected. An ITB model incorporating gluteus maximus and tensor fascia latae muscles, along with a passive strand, was used. Peak strain values during the stance phase were averaged across subjects. Results indicated no significant peak strain differences in active muscle strands between conditions. However, the peak passive strand strain was significantly higher with the leg on the inside of the curve (4.69%) compared to the outside curve condition (4.49%) (p = .009, η2 = 0.454), but not significantly different from the straight path condition. When running around a curve, this may put the inside leg at a higher risk of developing ITBS when compared to the outside leg. Further research is needed to explore the long-term effects of curved running on ITB strain and potential injury prevention strategies.","PeriodicalId":49482,"journal":{"name":"Sports Biomechanics","volume":" ","pages":"713-725"},"PeriodicalIF":2.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145432949","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 case study on the classification of somersault jumping motion characteristics in trampoline gymnasts using the TJ-index. 用tj指数对蹦床体操运动员空翻跳跃动作特征进行分类的个案研究。

IF 2 3区医学

Sports Biomechanics Pub Date : 2026-05-01 Epub Date: 2025-10-16 DOI: 10.1080/14763141.2025.2572769

Masaharu Matsushima

{"title":"A case study on the classification of somersault jumping motion characteristics in trampoline gymnasts using the TJ-index.","authors":"Masaharu Matsushima","doi":"10.1080/14763141.2025.2572769","DOIUrl":"10.1080/14763141.2025.2572769","url":null,"abstract":"The purpose of this study was to propose the TJ-index, which uses deflection distance and contact time as variables, as an index of somersault jumps in trampoline competitions, and to clarify the characteristics of the jumping motion of trampoline gymnasts as a case study. Ten participants, ranging from elite trampoline gymnasts to those at the national competition level, performed 10 consecutive backward somersaults and forward somersault half-twists in alternating sequence. A strong positive correlation was observed between the TJ-index and time of flight (r = 0.98, p < 0.01). The relationship between deflection distance and contact time, which together constitute the TJ-index, was classified into six types using Ward's cluster analysis method. Moreover, normalising deflection distance by body mass revealed individual jump characteristics. The bed's deflection distance may primarily result from either the gymnast's body mass or their active jumping motion. A strong negative correlation was observed between deflection distance per unit of body mass and contact time (r = -0.87, p < 0.01). These findings suggested the existence of body mass optimisation in trampoline gymnasts. The use of the TJ-index appears to have potential for identifying and classifying the jumping motion tendencies of trampoline gymnasts by type.","PeriodicalId":49482,"journal":{"name":"Sports Biomechanics","volume":" ","pages":"686-699"},"PeriodicalIF":2.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145304321","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

Relationship between 3D lower-limb kinematics and foot propulsive force during breaststroke kicking. 蛙泳踢腿过程中下肢三维运动学与足部推进力的关系。

IF 2 3区医学

Sports Biomechanics Pub Date : 2026-05-01 Epub Date: 2025-11-10 DOI: 10.1080/14763141.2025.2580379

Daiki Koga, Takaaki Tsunokawa, Eisuke Kawai, Yusaku Nakazono, Yasuo Sengoku, Hideki Takagi

{"title":"Relationship between 3D lower-limb kinematics and foot propulsive force during breaststroke kicking.","authors":"Daiki Koga, Takaaki Tsunokawa, Eisuke Kawai, Yusaku Nakazono, Yasuo Sengoku, Hideki Takagi","doi":"10.1080/14763141.2025.2580379","DOIUrl":"10.1080/14763141.2025.2580379","url":null,"abstract":"In breaststroke, leg kick propulsion plays a major role in swimming velocity; however, the relationship between propulsive force and its kinematics remains underexplored. This study aimed to identify leg movements that enhance foot propulsive force. Fourteen male swimmers performed 10 seconds of maximal-effort breaststroke kicks while holding a board with their upper limbs in a swimming flume. Leg kinematics and foot propulsive force were measured using a motion-capture system and eight pressure sensors on the left foot. During the knee extension phase, foot propulsive force correlated significantly with hip adduction/abduction range of motion (ROM) (r = -0.57), ankle plantar/dorsiflexion ROM (r = 0.59), mean plantar/dorsiflexion angular velocity (r = 0.56), peak knee extension angular velocity (r = -0.54), and peak ankle plantar flexion angular velocity (r = 0.59). In the insweep phase, foot propulsive force correlated significantly with foot resultant speed (r = 0.89), foot forward-backward velocity (r = 0.79), and foot vertical velocity (r = 0.71). This study suggests that during the knee extension phase, adjustments in ROM and increases in angular velocity of lower limb joints are associated with greater foot propulsive force, while higher foot velocity is associated with increased propulsive force during the insweep phase.","PeriodicalId":49482,"journal":{"name":"Sports Biomechanics","volume":" ","pages":"773-790"},"PeriodicalIF":2.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145483448","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

Reducing lumbar spine loading in Russian bar porters: a case study. 减少腰椎负荷在俄罗斯酒吧搬运工：一个案例研究。

IF 2 3区医学

Sports Biomechanics Pub Date : 2026-05-01 Epub Date: 2025-11-04 DOI: 10.1080/14763141.2025.2578348

Marion Cossin, Pierre Schmidt, Flavie Gilet, Gerald Parent, Anne-Laure Menard, Yves Mathieu, Eric Wagnac

{"title":"Reducing lumbar spine loading in Russian bar porters: a case study.","authors":"Marion Cossin, Pierre Schmidt, Flavie Gilet, Gerald Parent, Anne-Laure Menard, Yves Mathieu, Eric Wagnac","doi":"10.1080/14763141.2025.2578348","DOIUrl":"10.1080/14763141.2025.2578348","url":null,"abstract":"The Russian bar is an acrobatic circus discipline characterised by dynamic loading on a single shoulder, posing a risk for back injuries. The aim of this case study was to quantify and compare lumbar spine loads in porters using a novel symmetrical design and the traditional asymmetrical bar. Two male porters and one female flyer performed a series of candle jumps, saltos, and consecutive jumps using both bar designs. Motion capture, electromyography, and musculoskeletal modelling in OpenSim were used to quantify L4-L5 intervertebral forces and moments. Statistical comparisons were conducted using a multifactorial analysis of variance (ANOVA). The results showed that the symmetrical bar significantly reduced lumbar spine bending moments (2.1 times lower) and shear forces (2.2 times lower) compared to the traditional bar, with no significant differences in shoulder forces. Shoulder forces did not differ significantly between bar types, suggesting that the flyer's performance, particularly jump height, was not substantially affected by the change in bar design. This novel symmetric bar design may enhance the safety and carrier of Russian bar porters. Future research should investigate the long-term effects of this design and its impact on performance adaptation.","PeriodicalId":49482,"journal":{"name":"Sports Biomechanics","volume":" ","pages":"749-762"},"PeriodicalIF":2.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145446254","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

Training junior tennis players to increase knee flexion improves their service performance. 训练青少年网球运动员增加膝关节屈曲可以提高他们的发球表现。

IF 2 3区医学

Sports Biomechanics Pub Date : 2026-05-01 Epub Date: 2025-10-09 DOI: 10.1080/14763141.2025.2568220

Joana Ferreira Hornestam, Thales Rezende Souza, Fabrício Anício Magalhães, Mickäel Begon, Bruce Elliott, Sérgio Teixeira Fonseca

{"title":"Training junior tennis players to increase knee flexion improves their service performance.","authors":"Joana Ferreira Hornestam, Thales Rezende Souza, Fabrício Anício Magalhães, Mickäel Begon, Bruce Elliott, Sérgio Teixeira Fonseca","doi":"10.1080/14763141.2025.2568220","DOIUrl":"10.1080/14763141.2025.2568220","url":null,"abstract":"This study aimed to assess whether training to increase knee flexion during the tennis serve improves performance and to explore the associated biomechanical changes across the body. Twenty junior tennis players were randomly allocated into control (standard in-season training) and training groups (received training to increase knee flexion during serve). Inertial sensors tracked full body and racket kinematics during five serves performed in pre- and post-training assessments. Racket velocity, impact height, and lower- and upper-body kinematics were compared. Training increased serve knee flexion by 31° (p < 0.001), leading to a 1.38 km/h increase racket velocity (p = 0.036) without affecting impact height (p = 0.331). Additionally, training increased: range of front leg knee extension (MD = 23.46°, p < 0.001) and extension velocity (MD = 54.28°/s, p = 0.008), hip range of motion (front: MD = 53.60°/s, p = 0.003; back: MD = 57.28°/s, p = 0.015), pelvis upward velocity (MD = 0.27 m/s, p < 0.001), and trunk contralateral flexion velocity (MD = 23.18°/s, p = 0.025). No main effects were found for shoulder internal rotation (p = 0.304) and elbow extension (p = 0.214) velocities. No changes were observed in the control group other than a decreased trunk contralateral flexion velocity (MD = -28.98°/s, p = 0.007). Specific training can, therefore, increase serve knee flexion. This study highlights that specific training to increase knee flexion can enhance serve performance by increasing racket velocity, without increasing upper limb joint contribution.","PeriodicalId":49482,"journal":{"name":"Sports Biomechanics","volume":" ","pages":"643-658"},"PeriodicalIF":2.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145253513","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

Automated detection of racket-ball impact timing in tennis strokes using deep learning models and a markerless motion capture system. 使用深度学习模型和无标记动作捕捉系统自动检测网球击球中的球拍撞击时间。

IF 2 3区医学

Sports Biomechanics Pub Date : 2026-04-27 DOI: 10.1080/14763141.2026.2662620

Ayoon Lee, Kyungseok Byun, Yerim Kim, Eunbin Choi, Hyo Keun Lee

{"title":"Automated detection of racket-ball impact timing in tennis strokes using deep learning models and a markerless motion capture system.","authors":"Ayoon Lee, Kyungseok Byun, Yerim Kim, Eunbin Choi, Hyo Keun Lee","doi":"10.1080/14763141.2026.2662620","DOIUrl":"https://doi.org/10.1080/14763141.2026.2662620","url":null,"abstract":"Event identification, which refers to defining important moments within a movement, is a fundamental process in biomechanical analysis. This study aimed to develop and evaluate deep learning models for automated detection of the moment of racket-ball contact during tennis strokes. For this purpose, Long Short-Term Memory (LSTM) and Gated Recurrent Unit (GRU) networks were implemented using kinematic data collected from a markerless motion capture system. Kinematic data were obtained from 16 collegiate tennis players performing standard stroke techniques. Among various joint combinations, a set of ankle, elbow, knee, and wrist data provided the highest performance with 95% accuracy. The LSTM model achieved a precision of 95.77%, an F1-score of 97.09%, and an AUC of 98.06%, while the GRU model achieved a precision of 96.23%, an F1-score of 97.71%, and an AUC of 99.20%. These findings demonstrate that automated detection of sport-specific biomechanical events can effectively replace labour-intensive manual annotation. Moreover, markerless motion capture systems enable large-scale and ecologically valid data collection, offering a viable alternative to laboratory-based methods. The proposed approach provides a methodological basis for near-real-time monitoring and practical feedback in tennis performance analysis and training.","PeriodicalId":49482,"journal":{"name":"Sports Biomechanics","volume":" ","pages":"1-15"},"PeriodicalIF":2.0,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147787380","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