Journal of Human Kinetics最新文献_第5页

Objective Accuracy in Estimating Repetitions in Reserve in the Back Squat: An Analysis between Experienced vs. Novice Subjects. 后蹲动作预估的客观准确性：经验与新手对比分析。

IF 4 3区医学

Journal of Human Kinetics Pub Date : 2025-11-19 eCollection Date: 2026-04-01 DOI: 10.5114/jhk/205218

Felipe Andrés Bermúdez Droguett, Raúl Ricardo Festa, Naomy Alexandra Telchi Quintana, José Gomez-Lopez, Álvaro Huerta Ojeda, Claudio Farias-Valenzuela, Frano Giakoni-Ramírez, Emilio Jofré-Saldía

{"title":"Objective Accuracy in Estimating Repetitions in Reserve in the Back Squat: An Analysis between Experienced vs. Novice Subjects.","authors":"Felipe Andrés Bermúdez Droguett, Raúl Ricardo Festa, Naomy Alexandra Telchi Quintana, José Gomez-Lopez, Álvaro Huerta Ojeda, Claudio Farias-Valenzuela, Frano Giakoni-Ramírez, Emilio Jofré-Saldía","doi":"10.5114/jhk/205218","DOIUrl":"10.5114/jhk/205218","url":null,"abstract":"This study aimed to objectively compare the accuracy of estimating repetitions in reserve (RIR) in the back squat among subjects with different levels of experience in resistance training (RT). Sixteen healthy adults (24.31 ± 4.94 years, 4 women and 12 men) were divided into the experienced (N = 8; ≥ 18 months of experience) and the novice (N = 8; <18 months of experience) in RT. Each group performed one set to muscle failure (day 1), and one RIR3 and RIR1 (day 2) of Smith machine back squats with a load of 70% 1RM. In addition, mean propulsive velocity (MPV) and the rating of perceived exertion (RPE; 0-10 scale) were assessed to individually objectify the RIR. There were no differences in accuracy for estimating both RIR3 and RIR1 between groups (p > 0.05, d ≥ 0.03). Furthermore, there were no differences in MPV, velocity loss, the RPE, and total of repetitions to muscle failure, RIR3, and RIR1 sets (p > 0.05, d ≥ -0.07). Overall, our findings suggest that RT experience does not influence the accuracy of estimating RIRs in the back squat, which is objectively supported by individualized MPV and the RPE. Previous familiarity with high-level effort may play a key role in accuracy beyond RT experience.","PeriodicalId":16055,"journal":{"name":"Journal of Human Kinetics","volume":"102 ","pages":"145-158"},"PeriodicalIF":4.0,"publicationDate":"2025-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13215226/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148054871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","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 and Validity of the Load-Velocity Relationship for Predicting the 1 RM in the Bulgarian Split Squat Exercise. 负荷-速度关系预测保加利亚劈开深蹲1 RM的信度和效度。

IF 4 3区医学

Journal of Human Kinetics Pub Date : 2025-11-19 eCollection Date: 2026-04-01 DOI: 10.5114/jhk/205096

Hao Yan, Haiting Zhai, Tingting Wang, Duchun Wang, Hongwen Wei

{"title":"Reliability and Validity of the Load-Velocity Relationship for Predicting the 1 RM in the Bulgarian Split Squat Exercise.","authors":"Hao Yan, Haiting Zhai, Tingting Wang, Duchun Wang, Hongwen Wei","doi":"10.5114/jhk/205096","DOIUrl":"10.5114/jhk/205096","url":null,"abstract":"This study aimed to compare the reliability and validity of various prediction models based on load-velocity relationships for predicting the one-repetition maximum (1 RM) in Bulgarian split squat (BSS) exercises. Twenty-seven resistance-trained men participated in the study, completing both a 1-RM test and a progressive loading test to determine the 1 RM value, along with the mean velocity (MV) and peak velocity (PV) for each load. Load-velocity relationships were constructed using linear and binomial regression equations. The results revealed a strong correlation between different velocities and relative loads in BSS exercises (R2 = 0.880-0.964), with the MV-based model slightly outperforming the PV-based model (R2 difference of 0.06 and SEE difference of 0.02). Additionally, both MV and PV across all test loads demonstrated good reliability (ICC ≥ 0.801; CV ≤ 2.36%). Despite very strong correlations between the actual and predicted 1 RM across all models (R = 0.890-0.972), linear regression models and binomial regression models for the dominant leg consistently underestimated the actual 1 RM (p ≤ 0.035). Only the binomial regression models for the non-dominant leg accurately predicted the 1 RM (p ≥ 0.223). In conclusion, modeling using MV and binomial regression provides more reliable and accurate 1 RM predictions for BSS exercises. These findings confirm the utility of load-velocity relationships in predicting 1 RM for BSS exercises and suggest that practitioners should use MV and polynomial regression equations for predicting 1 RM in highly complex free-weight resistance exercises.","PeriodicalId":16055,"journal":{"name":"Journal of Human Kinetics","volume":"102 ","pages":"159-171"},"PeriodicalIF":4.0,"publicationDate":"2025-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13215220/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148054983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Practice (Doesn´t) Make Perfect Shooters: The Influence of Experience on Penalty Execution in Elite Soccer. 练习（不是）造就完美射手：经验对精英足球罚球执行的影响。

IF 4 3区医学

Journal of Human Kinetics Pub Date : 2025-11-19 eCollection Date: 2026-04-01 DOI: 10.5114/jhk/205224

Rubén Maneiro, Antonio Ardá, José Luís Losada, Iyán Iván-Baragaño

{"title":"Practice (Doesn´t) Make Perfect Shooters: The Influence of Experience on Penalty Execution in Elite Soccer.","authors":"Rubén Maneiro, Antonio Ardá, José Luís Losada, Iyán Iván-Baragaño","doi":"10.5114/jhk/205224","DOIUrl":"10.5114/jhk/205224","url":null,"abstract":"The aim of this study was twofold: firstly, to identify the variables associated with the experience of penalty shooters, and secondly, to understand the interaction of contextual variables and penalty execution that differentiated experienced from inexperienced players. To achieve this, a systematic observational methodology was employed to analyze 1,589 penalty kicks in various international club and national team competitions for men. The analyses were conducted using contingency tables and the chi-square statistic, as well as decision trees and binary logistic regression, to address the second objective. Categorizing players as experienced or inexperienced was based on their role as penalty kick takers in the team. Considering experience, statistically significant differences were found in contextual variables such as the specific position, age, timing, and match status. Similarly, differences were found in the shooter's running approach and kick height. At a multivariate level, both classification models showed significant differences in shooting patterns based on experience: players differed in terms of match timing, the specific position, the running approach, and the penalty outcome. The results of this study demonstrated differences between experienced and inexperienced players, highlighting the need to: i) delve deeper into research on this specific soccer action, and ii) enhance training of such actions among a greater number of players, not solely relying on experienced players for their execution.","PeriodicalId":16055,"journal":{"name":"Journal of Human Kinetics","volume":"102 ","pages":"215-226"},"PeriodicalIF":4.0,"publicationDate":"2025-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13215219/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148054937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Higher Risk of Non-Contact Anterior Cruciate Ligament Injury in the Non-Dominant Limb during Single-Leg Lateral Jump Landing in Active Individuals. 运动个体在单腿外侧跳着地时非优势肢非接触性前交叉韧带损伤的风险更高。

IF 4 3区医学

Journal of Human Kinetics Pub Date : 2025-11-19 eCollection Date: 2026-07-01 DOI: 10.5114/jhk/205897

Pinyada Warathanagasame, Miraj Subedi, Komsak Sinsurin, Jatuporn Suttiwong

{"title":"Higher Risk of Non-Contact Anterior Cruciate Ligament Injury in the Non-Dominant Limb during Single-Leg Lateral Jump Landing in Active Individuals.","authors":"Pinyada Warathanagasame, Miraj Subedi, Komsak Sinsurin, Jatuporn Suttiwong","doi":"10.5114/jhk/205897","DOIUrl":"10.5114/jhk/205897","url":null,"abstract":"Non-contact anterior cruciate ligament injury is a common sports injury, for which biomechanical factors are considered important. Gender and limb dominance influence lower limb biomechanics. Therefore, this study aimed to investigate the effects of gender and limb dominance on trunk and lower extremity biomechanics in the frontal plane during single-leg lateral jump landing. A total of 20 active individuals (10 male and 10 female) were recruited to perform lateral single-leg jump landing. The study was conducted in a motion analysis laboratory. Ten Vicon™ cameras (200 Hz) synchronized with an AMTI force plate (1,000 Hz) were used to capture kinematic and kinetic data. A three-dimensional (3D) model of the trunk and lower extremities was constructed using Visual3D software. Average data of ground reaction forces (GRFs), frontal motion of the trunk and lower limb, and frontal joint moment of the lower limb were reported and analyzed. A two-way mixed ANOVA model (2 × 2, gender × side) was used to analyze the primary effect. The significance level of 0.05 was set for statistical analysis. Active females exhibited significantly higher peak vertical GRF (p = 0.01) than males. The non-dominant limb had a significantly higher knee valgus moment at the peak vertical GRF (p < 0.001), the knee valgus angle excursion (p = 0.03), and the hip abductor moment at the peak vertical GRF (p < 0.001). Both groups used similar frontal plane lower extremity control strategies. A significantly higher knee valgus excursion, hip abductor moment, and knee valgus moment at the peak vertical GRF phase were observed in the non-dominant limb. Therefore, the non-dominant limb appeared to have higher loading at the hip and knee joints during landing.","PeriodicalId":16055,"journal":{"name":"Journal of Human Kinetics","volume":"103 ","pages":"97-106"},"PeriodicalIF":4.0,"publicationDate":"2025-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13551333/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148912370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring the Dose-Response Relationship between Resistance-Training Volume and Psychophysiological Responses in Trained Males. 男性训练阻力训练量与心理生理反应的剂量-反应关系探讨。

IF 4 3区医学

Journal of Human Kinetics Pub Date : 2025-11-19 eCollection Date: 2026-07-01 DOI: 10.5114/jhk/209051

Alysson Enes, Guilherme Nass, Ragami C Alves, Mohan Adam E, Alec Piñero, Gustavo Oneda, Danilo Fonseca Leonel, Brad J Schoenfeld, Tácito P Souza-Junior

{"title":"Exploring the Dose-Response Relationship between Resistance-Training Volume and Psychophysiological Responses in Trained Males.","authors":"Alysson Enes, Guilherme Nass, Ragami C Alves, Mohan Adam E, Alec Piñero, Gustavo Oneda, Danilo Fonseca Leonel, Brad J Schoenfeld, Tácito P Souza-Junior","doi":"10.5114/jhk/209051","DOIUrl":"10.5114/jhk/209051","url":null,"abstract":"We investigated the effects of different weekly-set progressions on perceptual responses and explored whether muscle thickness (MT) responses were related to perceptual and volume metrics in resistance-trained males. Thirty-one participants were randomly assigned to one of the three groups: a fixed set (FS) group (n = 10), maintaining 22 weekly quadriceps sets; a 4-Set (4S) group (n = 10) and a 6-Set (6S) group (n = 11), increasing by four and six every fortnight, respectively. Training occurred twice weekly for 12 weeks. The session rating of perceived exertion (sRPE) and session feelings of pleasure/displeasure (sFPD) were assessed 15 min post-training, while sRPE-derived metrics (monotony and strain) were analyzed weekly. The sRPE was higher in the FS compared to the 4S group (p = 0.046), while sFPD were higher in the FS compared to the 6S group (p < 0.001). Monotony was lower in the 4S than in other groups (p < 0.001). Strain followed a graded dose-response (6S > 4S > FS, p < 0.001). Overall, there were no meaningful correlations between volume load slopes and MT (r < 0.392) or perceptual responses (r < 0.448). These findings suggest that progressive increases in weekly-set volume influence perceptual responses; however, these responses do not appear to be related to changes in muscle thickness.","PeriodicalId":16055,"journal":{"name":"Journal of Human Kinetics","volume":"103 ","pages":"303-318"},"PeriodicalIF":4.0,"publicationDate":"2025-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13551339/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148912264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Effect of a Novel Dynamic Hamstring Brace on Muscle and Athletic Performance Tests among Young Basketball Players. 新型动态腿筋支具对青少年篮球运动员肌肉和运动性能测试的影响。

IF 4 3区医学

Journal of Human Kinetics Pub Date : 2025-11-19 eCollection Date: 2026-07-01 DOI: 10.5114/jhk/209073

Roni Gottlieb, Shai Greenberg

{"title":"The Effect of a Novel Dynamic Hamstring Brace on Muscle and Athletic Performance Tests among Young Basketball Players.","authors":"Roni Gottlieb, Shai Greenberg","doi":"10.5114/jhk/209073","DOIUrl":"10.5114/jhk/209073","url":null,"abstract":"A hamstring injury is the most incurred musculoskeletal injury in sports, with high recurrence rates. This study evaluated a novel dynamic hamstring brace on the athletic performance of young male basketball players. The study included 13 healthy adolescent basketball players (aged M = 14 ± 0.6 yrs) who underwent two sets of six performance tests on two different days. Participants wore the dynamic brace for one set of tests (research) and then performed the same tests without the brace (control). Isolated hamstring tests included the end-range hamstring-strength test and the single-leg bridge test. Performance tests included horizontal explosive 10-m and 20-m sprints, vertical explosive counter-movement jumps, and squat jump tests. The findings indicate improved outcomes when wearing the dynamic brace compared to the control condition. A significant increase was seen in the single-leg bridge test (M = 30 ± 4 and 23.5 ± 5 repetitions, respectively, p < 0.01), while a significant decrease was observed in the 10-m sprint test (M = 2.01 ± 0.1 and 1.88 ± 0.1 s, respectively, p < 0.05). No significant differences were found in other tests. In conclusion, the novel brace presented in this study could reduce hamstring injuries, with little impact on athletic performance.","PeriodicalId":16055,"journal":{"name":"Journal of Human Kinetics","volume":"103 ","pages":"121-131"},"PeriodicalIF":4.0,"publicationDate":"2025-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13551337/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148912328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparison of the Most Demanding Periods in Three Categories of Female's Soccer: A Double View from the Player and the Team. 女子足球三大类比赛最紧张时期的比较：运动员与球队的双重视角。

IF 4 3区医学

Journal of Human Kinetics Pub Date : 2025-11-19 eCollection Date: 2026-07-01 DOI: 10.5114/jhk/207258

Beñat Erkizia, David Casamichana, Fabio Yuzo Nakamura, Eider Barba, Julen Castellano

{"title":"Comparison of the Most Demanding Periods in Three Categories of Female's Soccer: A Double View from the Player and the Team.","authors":"Beñat Erkizia, David Casamichana, Fabio Yuzo Nakamura, Eider Barba, Julen Castellano","doi":"10.5114/jhk/207258","DOIUrl":"10.5114/jhk/207258","url":null,"abstract":"This study is the first to quantify most demanding periods (MDPs) at both the individual (player) and the team level across three teams. It provides reference values for three external load variables across four time windows (of 1, 3, 5 and 10 min). The findings revealed that Professional (PRO) and Reserve (RES) teams covered more distance than the Academy (ACA) team in a 1-min window (w1), with the PRO team also covering greater distances at >18 km•h-1 in the w1. Additionally, PRO and RES teams experienced more accelerations in 1- and 3-min windows, with the PRO team showing higher values than the RES team in the 5-min window (w5). Players in PRO and RES teams ran longer distances and performed more accelerations than those in the ACA team, especially in 1-, 3-, and 5-min windows. No significant differences in MDPs were observed between the first and second halves for any team, but significant differences in distance covered were noted for PRO and ACA players in specific time windows. The main findings highlight superior locomotor and mechanical responses in PRO and RES players compared to ACA players, particularly in shorter time windows (w1, w3, and w5).","PeriodicalId":16055,"journal":{"name":"Journal of Human Kinetics","volume":"103 ","pages":"201-214"},"PeriodicalIF":4.0,"publicationDate":"2025-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13551343/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148911906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vertical Stiffness, Pelvic Tilt Range and Jump Height during Vertical Jumping in Youth Soccer: Influence of Age, Sex and the Playing Position. 青少年足球垂直起跳中垂直刚度、骨盆倾斜范围和起跳高度：年龄、性别和位置的影响

IF 4 3区医学

Journal of Human Kinetics Pub Date : 2025-11-19 eCollection Date: 2026-07-01 DOI: 10.5114/jhk/204868

Rafael Martínez, Alejandro Sanz, Florentino Huertas, Paul J Byrne, Javier Martínez-Gramage

{"title":"Vertical Stiffness, Pelvic Tilt Range and Jump Height during Vertical Jumping in Youth Soccer: Influence of Age, Sex and the Playing Position.","authors":"Rafael Martínez, Alejandro Sanz, Florentino Huertas, Paul J Byrne, Javier Martínez-Gramage","doi":"10.5114/jhk/204868","DOIUrl":"10.5114/jhk/204868","url":null,"abstract":"This study aimed to examine the influence of sex, age, and the playing position on vertical stiffness, pelvic tilt range, and jump height during vertical jumping in young soccer players. A total of 542 players (129 females, 413 males) aged 12 to 19 years from elite soccer academies participated. Players were divided into U14, U16, and U19 categories, and jump height, vertical stiffness, and pelvic tilt range were evaluated using the countermovement jump (CMJ) with an inertial sensor. Results revealed that vertical stiffness and jump height were significantly higher in males than females (p < 0.001) and significantly increased with age in males only from U14 to U16, U16 to U19 and U14 to U19 (p < 0.01 to p = 0.015). Pelvic tilt range was significantly greater in females only (p < 0.001), with forwards showing larger pelvic tilt range than midfielders (p = 0.023), though no differences were found by age. The analysis of the playing position showed no significant differences in vertical stiffness or jump height, suggesting that these variables were more influenced by biological and sex-related factors rather than positional roles during developmental stages. These findings provide normative data that can aid in the design of individualized training programs aimed at optimizing performance and reducing injury risk in youth soccer players.","PeriodicalId":16055,"journal":{"name":"Journal of Human Kinetics","volume":"103 ","pages":"69-80"},"PeriodicalIF":4.0,"publicationDate":"2025-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13551353/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148912442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Impact of Anthropometric Characteristics and Motor Abilities on Match Running Performance (MRP) in Elite Soccer Players: A Multiple Regression Approach. 优秀足球运动员的人体特征和运动能力对比赛跑步表现的影响：一个多元回归方法。

IF 4 3区医学

Journal of Human Kinetics Pub Date : 2025-11-19 eCollection Date: 2026-07-01 DOI: 10.5114/jhk/207525

Radivoje Radaković, Borko Katanić, Mima Stanković, Igor Jelaska, Goran Jelaska

{"title":"The Impact of Anthropometric Characteristics and Motor Abilities on Match Running Performance (MRP) in Elite Soccer Players: A Multiple Regression Approach.","authors":"Radivoje Radaković, Borko Katanić, Mima Stanković, Igor Jelaska, Goran Jelaska","doi":"10.5114/jhk/207525","DOIUrl":"10.5114/jhk/207525","url":null,"abstract":"The aim of the study was to examine the impact of anthropometric characteristics and motor abilities on match running performance (MRP) in elite soccer players. For this purpose, a sample of 41 professional soccer players was evaluated considering five anthropometric characteristics, 11 motor abilities (including sprint and acceleration performance, agility, power, and endurance) as regressors, and six variables describing MRP (time spent in running at < 8 km/h, 8-15 km/h, 15.1-19 km/h, 19.1-23 km/h, > 23 km/h and total time spent in running) as criteria. Regression analysis identified significant regression models (p < 0.05) predicting 8.1-15 km/h, 19.1-23 km/h, and total time spent in running variables for both sets of regressors, with morphology explaining 29.6%, 29.8%, and 37.4%, and motor abilities explaining 59.6%, 65.9% and 68.7% of criterion variables, respectively. It can be concluded that body composition variables such as muscle and fat percentages are associated with jogging, high-speed running, and total distance covered, whilst sprinting variables at 10, 20, and 30 m, the 10/20 index, and the CMJ are associated with jogging and total distance covered. Also, the squat jump is associated with jogging, while shuttle run test performance is associated with high-speed running only. Results provide deep insight into the structure of relationships between MRP and both morphological and motor variables, which are essential to structure advanced training systems focused on optimization of MRP in elite soccer players.","PeriodicalId":16055,"journal":{"name":"Journal of Human Kinetics","volume":"103 ","pages":"227-244"},"PeriodicalIF":4.0,"publicationDate":"2025-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13551338/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148912486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Countermovement Jump Analysis as a Predictor of Overhead Pitching Velocity in Adolescent Baseball Pitchers. 青少年棒球投手顶投速度的反向起跳分析。

IF 4 3区医学

Journal of Human Kinetics Pub Date : 2025-11-19 eCollection Date: 2026-04-01 DOI: 10.5114/jhk/211720

Hui-Wen Hsiao, Heng-Ju Lee

{"title":"Countermovement Jump Analysis as a Predictor of Overhead Pitching Velocity in Adolescent Baseball Pitchers.","authors":"Hui-Wen Hsiao, Heng-Ju Lee","doi":"10.5114/jhk/211720","DOIUrl":"10.5114/jhk/211720","url":null,"abstract":"Lower limb strength is crucial in pitching, as force output correlates positively with pitching velocity. The countermovement jump (CMJ) is a common test for assessing lower limb strength, and previous research has hinted at its potential to predict performance in adult baseball players. However, further research is warranted concerning adolescent players. This study investigated the relationship between CMJ lower limb power and fastball velocity in adolescent baseball pitchers. Thirty-two adolescent male baseball pitchers from junior high school baseball teams executed three CMJs and threw five fastballs from a custom-made pitching mound. A Kistler force plate (2500 Hz) recorded ground reaction forces (GRFs) during the CMJ, and a pocket radar gun measured ball velocity. The Pearson correlation coefficient assessed the relationship between CMJ variables and ball speed. A stepwise-forward multiple regression model determined the contribution of CMJ variables to predicting fastball velocity in adolescent baseball pitchers. The CMJ variables (braking force, peak force, braking rate of force development, braking impulse, propulsive impulse, peak power, rate of power development, and leg stiffness) correlated positively with ball velocity. The regression analysis revealed that absolute braking force and body height explained 43.3% of the variance in velocity. In conclusion, adolescent pitchers with higher absolute braking force during the CMJ and greater body height are likely to achieve higher fastball velocity. Lower limb strength, assessed via CMJ tests, may aid in predicting adolescent pitchers' performance. These findings emphasize the importance of lower limb strength for pitching velocity and provide guidance to coaches for developing training programs to enhance adolescent players' fastball velocity.","PeriodicalId":16055,"journal":{"name":"Journal of Human Kinetics","volume":"102 ","pages":"23-34"},"PeriodicalIF":4.0,"publicationDate":"2025-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13215227/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148054765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0