Journal of Applied Biomechanics最新文献_第7页

Maximize or Normalize? Examining Single-Leg Drop-Land-Cut Distances in Young Athletes: A Pilot Study. 最大化还是正常化？检查年轻运动员的单腿降落-切入距离：一项试点研究。

IF 1.6 4区医学

Journal of Applied Biomechanics Pub Date : 2025-09-29 Print Date: 2025-12-01 DOI: 10.1123/jab.2025-0061

Anna J Butcher, Tracey Clissold, Sarah Ward, Jim Richards, Kim Hébert-Losier

{"title":"Maximize or Normalize? Examining Single-Leg Drop-Land-Cut Distances in Young Athletes: A Pilot Study.","authors":"Anna J Butcher, Tracey Clissold, Sarah Ward, Jim Richards, Kim Hébert-Losier","doi":"10.1123/jab.2025-0061","DOIUrl":"10.1123/jab.2025-0061","url":null,"abstract":"This study investigated differences in leap distance for a single-leg drop-land-cut (CUT) task based on using either a maximal or normalized (150% leg length) method or the influence of condition order and leg dominance on distance achieved. Twenty-six young court and field sport athletes (61.5% female) completed the single-leg drop-land-cut task on the dominant and nondominant leg under maximal and normalized conditions in a randomized order. Multivariate repeated measures analysis of variance tests with post hoc pairwise comparisons were used to determine the effect of condition (maximal and normalized), leg dominance (dominant and nondominant), and interaction effect on leaping distance. Potential order effects were explored as a between-subjects factor within the analysis of variance. Our findings showed significantly larger leap distances under the maximal condition (P < .001, ηp2 ≥ .417), with the maximal mean being 154.5 (24.7) cm (175.1% [18.6%] leg length) and the normalized mean being 140.7 (19.7) cm (159.0% [5.8%] of leg length). Furthermore, greater distances were achieved during the maximal task when performed following the normalized task (P < .001, 24.5% further). Practically, the normalized task may be better suited for heterogeneous samples; yet, the maximal task may be more suitable for homogeneous samples or pre-post study designs.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":" ","pages":"519-527"},"PeriodicalIF":1.6,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145202242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

The Number of Gait Cycles Necessary to Obtain a Representative Measure of Knee Joint Loads in Individuals With Lower Limb Amputation. 获得具有代表性的下肢截肢患者膝关节负荷测量所需的步态周期数。

IF 1.6 4区医学

Journal of Applied Biomechanics Pub Date : 2025-09-29 Print Date: 2025-12-01 DOI: 10.1123/jab.2024-0282

E Daniel Syrett, Carrie L Peterson, Benjamin J Darter

{"title":"The Number of Gait Cycles Necessary to Obtain a Representative Measure of Knee Joint Loads in Individuals With Lower Limb Amputation.","authors":"E Daniel Syrett, Carrie L Peterson, Benjamin J Darter","doi":"10.1123/jab.2024-0282","DOIUrl":"10.1123/jab.2024-0282","url":null,"abstract":"It is unknown how many gait cycles are necessary to assess medial tibiofemoral joint contact forces (mTJCF) for individuals with lower limb amputation. The purpose of this study was to determine the number of gait cycles necessary to achieve a representative measure, and to determine the reliability of intact limb mTJCF. Gait data were extracted from 14 individuals with transtibial amputation; simulations were performed using OpenSim. A sequential analysis technique was used to determine the number of gait cycles to achieve a representative measure using thresholds derived from the literature, and another using 0.25 standard deviation of the data. Reliability of the continuous set of gait cycles was also determined using an intraclass correlation coefficient analysis. Using the literature-derived thresholds, 3 gait cycles were necessary to achieve a representative measure of all 3 variables. Using the more stringent 0.25 standard deviation threshold, 9 gait cycles were required. All mTJCF variables demonstrated excellent reliability (ρ > .99). Our results suggest when analyzing mTJCF, ≥3 gait cycles are necessary to achieve a representative measure, though 9 gait cycles improve precision by >75%. The results of the study provide guidance to researchers toward selecting the number of gait cycles to analyze based on their research objectives.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":" ","pages":"544-551"},"PeriodicalIF":1.6,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145202180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 Mixed-Methods Exploration Into the Experiences of High School Girls Participating in a 100-Day Biomechanics-Based Mentoring Program. 高中女生参加为期100天的生物力学指导项目的混合方法探索。

IF 1.6 4区医学

Journal of Applied Biomechanics Pub Date : 2025-09-23 Print Date: 2025-12-01 DOI: 10.1123/jab.2024-0320

Crystal O Kean, Manuela Besomi, Martina Barzan, Laura E Diamond, Taylor J M Dick, Michelle Hall, Jayishini N Maharaj, Karen J Mickle, Celeste E Coltman

{"title":"A Mixed-Methods Exploration Into the Experiences of High School Girls Participating in a 100-Day Biomechanics-Based Mentoring Program.","authors":"Crystal O Kean, Manuela Besomi, Martina Barzan, Laura E Diamond, Taylor J M Dick, Michelle Hall, Jayishini N Maharaj, Karen J Mickle, Celeste E Coltman","doi":"10.1123/jab.2024-0320","DOIUrl":"10.1123/jab.2024-0320","url":null,"abstract":"This study implemented a mixed-method design (postprogram survey and structured interviews) to develop a detailed understanding of mentee experiences in the Biomechanics Research and Innovation Challenge. Forty-nine mentees completed the postprogram survey, and 26 mentees participated in the interview. Based on the survey results, 65% of mentees enjoyed the university campus experience, and 63% valued the networking opportunities. Learning about the research process and different careers in science and biomechanics were appreciated by 63% and 61%, respectively. Over 90% of mentees responded positively to statements about their mentors' suitability for the Biomechanics Research and Innovation Challenge, supportiveness, and availability, and 85% of mentees would recommend the program to their peers. The interviews revealed 4 key themes: developing Science, Technology, Engineering and Math (STEM) skills; discovering biomechanics; STEM role models; and facilitators and barriers to participation. Furthermore, the interviews highlighted the development of essential STEM skills, exposure to biomechanics, and the positive impact of mentors. The program's hands-on and collaborative nature facilitated participation, whereas communication tools and scheduling were barriers. Our findings highlight the positive mentee experiences related to participation in the Biomechanics Research and Innovation Challenge program, enabling them to develop STEM skills and discover the diverse field of biomechanics. Overall, the program was well received and recommended by participants.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":" ","pages":"499-510"},"PeriodicalIF":1.6,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145139543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Experimentally Induced Knee Effusion Does Not Simulate Sustained Ground Reaction Force Profiles During Overground Walking. 实验诱导的膝关节积液不能模拟地面行走过程中持续的地面反作用力。

IF 1.6 4区医学

Journal of Applied Biomechanics Pub Date : 2025-09-22 Print Date: 2025-12-01 DOI: 10.1123/jab.2025-0013

Katherine Collins, Brian Pietrosimone, Timothy Lindsay, Heather Myers, Anthony S Ceraulo, Brian C Lau, Sergio A Lemus, Laura S Pietrosimone

{"title":"Experimentally Induced Knee Effusion Does Not Simulate Sustained Ground Reaction Force Profiles During Overground Walking.","authors":"Katherine Collins, Brian Pietrosimone, Timothy Lindsay, Heather Myers, Anthony S Ceraulo, Brian C Lau, Sergio A Lemus, Laura S Pietrosimone","doi":"10.1123/jab.2025-0013","DOIUrl":"10.1123/jab.2025-0013","url":null,"abstract":"Less dynamic limb-level loading is observed bilaterally in individuals who have undergone unilateral anterior cruciate ligament reconstruction (ACLR) and is linked with the development and progression of knee osteoarthritis. Experimentally induced knee effusion (EIKE) models have been used to study biomechanical effects of knee injury, showing decreased quadriceps activation and lesser peak limb-level loading (ie, vertical ground reaction force [vGRF]) during stair descent and decreased knee extensor torque during overground walking. However, it is unknown whether EIKE acutely induces less dynamic limb-level loading during overground walking. Therefore, this study's purpose was to investigate bilateral effects of unilateral EIKE on limb-level loading throughout stance. Ten individuals completed 5 gait trials at their habitual walking speed pre-EIKE and post-EIKE. Functional waveform analyses compared time-normalized vGRFs, anteroposterior GRFs, and mediolateral GRFs normalized to body weight (BW) pre-EIKE and post-EIKE. EIKE resulted in less dynamic anteroposterior GRFs from 16% to 24% of stance (mean difference: 2%BW) and no change in vGRFs of the effused limb. The contralateral limb demonstrated greater vGRFs from 6% to 35% of stance (mean difference: 10%BW) and greater anteroposterior GRFs from 13% to 19% of stance (mean difference: -2%BW). Our results indicate that unilateral EIKE does not simulate bilateral sustained compressive loading profiles previously linked to knee osteoarthritis.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":" ","pages":"493-498"},"PeriodicalIF":1.6,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145126575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Head Acceleration Events Sustained During High School Wrestling Matches: Grappling With Differences Between Male and Female Adolescents. 在高中摔跤比赛中持续的头部加速事件：男性和女性青少年之间的差异。

IF 1.6 4区医学

Journal of Applied Biomechanics Pub Date : 2025-09-03 Print Date: 2025-12-01 DOI: 10.1123/jab.2024-0228

Kenzie B Friesen, Zaryan Masood, Lyndia Wu, Jean-Michel Galarneau, Christopher R Dennison, Reed Ferber, Carolyn A Emery

{"title":"Head Acceleration Events Sustained During High School Wrestling Matches: Grappling With Differences Between Male and Female Adolescents.","authors":"Kenzie B Friesen, Zaryan Masood, Lyndia Wu, Jean-Michel Galarneau, Christopher R Dennison, Reed Ferber, Carolyn A Emery","doi":"10.1123/jab.2024-0228","DOIUrl":"10.1123/jab.2024-0228","url":null,"abstract":"Wrestling is a popular high school sport despite high injury and concussion rates. Instrumented mouthguards can reliably measure head acceleration events (HAEs) accrued by wrestlers and may highlight potential sex differences; important considering the higher concussion rates among female athletes. The purpose of this study was to measure HAEs accrued in high school wrestling matches and compare frequency, magnitude, and head impact location between female and male wrestlers. Forty-five (16.5 [0.8] y) wrestlers (20 females; 25 males) wore instrumented mouthguards during high school matches. A total of 2843 (857 females; 1986 males) HAEs above an 8g trigger threshold from 452 player-matches were video verified. Results indicate that males accrue 30% higher HAE count per match (mean frequency = 6.9 HAEs/match) compared to females (mean frequency = 5.3 HAEs/match) (IRR = 1.297; 95% confidence interval, 1.051-1.594). Results also show females and males have similar HAE biomechanics including peak linear acceleration, angular velocity and acceleration, change in angular velocity in all planes, and impulse duration. Finally, females accrue 50% more head impacts high and to the right side of the head than males (IRR = 1.499; 95% confidence interval, 1.053-2.137). Higher HAE match counts for male wrestlers and varied impact locations highlight varied wrestling HAE mechanisms for female and male adolescent wrestlers and potential sex-specific HAE and concussion prevention strategies.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":" ","pages":"477-484"},"PeriodicalIF":1.6,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144994437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

How Oxygen Uptake, Ground Reaction Forces, and Kinematics Respond to Air Resistance and Drafting During Treadmill Running. 在跑步机上，氧气摄取、地面反作用力和运动学对空气阻力和牵伸的反应。

IF 1.6 4区医学

Journal of Applied Biomechanics Pub Date : 2025-09-01 Print Date: 2025-12-01 DOI: 10.1123/jab.2024-0316

Jared R Steele, Luke VanKeersbilck, Dustin Bruening, Jayson Gifford, Matthew Seeley, Iain Hunter

{"title":"How Oxygen Uptake, Ground Reaction Forces, and Kinematics Respond to Air Resistance and Drafting During Treadmill Running.","authors":"Jared R Steele, Luke VanKeersbilck, Dustin Bruening, Jayson Gifford, Matthew Seeley, Iain Hunter","doi":"10.1123/jab.2024-0316","DOIUrl":"10.1123/jab.2024-0316","url":null,"abstract":"This study investigated the effects of air resistance and drafting on oxygen uptake, ground reaction forces, and lower body kinematics during treadmill running. Thirty-three trained distance runners ran at 3.35 to 4.29 m/s (80%-85% of critical speed) on a force-instrumented treadmill within a wind tunnel under 5 conditions: no fan (NF), normal wind, normal wind with drafting, headwind (HW), and HW with drafting. Drafting involved running 1 m behind a mannequin. Oxygen uptake increased by 4.7% in HW compared with NF (P < .001) and decreased by 2.8% in HW with drafting compared with HW (P < .001). HW increased both braking and propulsive forces, accompanied by greater hip and knee flexion at initial contact, compared with NF. Drafting mitigated these effects but did not return oxygen uptake or biomechanical metrics to NF levels. Results suggest that air resistance imposes a metabolic cost, while drafting reduces but does no eliminate this cost. The most notable biomechanical adaptations occurred in horizontal ground reaction forces and lower body kinematics, indicating that both are influential in the metabolic response to air resistance. Future research should refine experimental setups to further explore air resistance's effects on biomechanics and energy cost.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":" ","pages":"511-518"},"PeriodicalIF":1.6,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144979501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 Different Inertial Measurement Unit Sensor-to-Segment Calibrations on Clinical 3-Dimensional Wrist Joint Angles Estimation. 不同惯性测量单元传感器-节段校准对临床三维腕关节角度估计的影响。

IF 1.3 4区医学

Journal of Applied Biomechanics Pub Date : 2025-09-01 Print Date: 2025-10-01 DOI: 10.1123/jab.2024-0283

Alessandro Bonfiglio, Elisabetta Farella, Raoul M Bongers

{"title":"Effects of Different Inertial Measurement Unit Sensor-to-Segment Calibrations on Clinical 3-Dimensional Wrist Joint Angles Estimation.","authors":"Alessandro Bonfiglio, Elisabetta Farella, Raoul M Bongers","doi":"10.1123/jab.2024-0283","DOIUrl":"10.1123/jab.2024-0283","url":null,"abstract":"Inertial Measurement Units (IMUs) enable accurate estimation of anatomical joint angles but require a sensor-to-segment calibration. Literature has presented several algorithms that address this gap; however, adequately comparing calibration performance is not trivial. This study compares 3 calibration methods: N-pose calibration (NP), functional calibration (FC), and manual alignment (MA) to estimate 3D wrist joint angles during single-plane and multiplane tasks. Thirteen healthy participants were instrumented with IMUs and optical markers to compute the range of motion error (ε), root mean squared error, and offset between the joint angles from the optical reference and each IMU calibration (NP, FC, and MA) as dependent variables. We then performed 3-way repeated-measures analyses of variance on each dependent variable to evaluate interactions between calibrations, tasks, and joint axes. NP showed the worst root mean squared error (8.34° [7.41°]) performance in the calibration main effect (η2G = .095) and calibration × tasks interaction (η2G = .121). In an exploratory analysis, FC performed best (main effect root mean squared error = 6.52° [4.47°]) in the offset calibration × axes interaction in single-plane (η2G = .160) tasks. Therefore, we recommend FC to optimally perform wrist calibration and against NP. These findings are viable in aiding the development of portable IMU-based clinical motion-tracking devices.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":" ","pages":"451-462"},"PeriodicalIF":1.3,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144979471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Model Comparison for Defining the Trunk for Dynamic Testing in a Motion Capture Lab. 动态捕获实验室中动态测试主干定义的模型比较。

IF 1.6 4区医学

Journal of Applied Biomechanics Pub Date : 2025-08-12 Print Date: 2025-12-01 DOI: 10.1123/jab.2025-0034

Sophia Ulman, Alex M Loewen, Ashley L Erdman, Sylvia Õunpuu, Ross Chafetz, Kirsten Tulchin-Francis, Tishya A L Wren

{"title":"Model Comparison for Defining the Trunk for Dynamic Testing in a Motion Capture Lab.","authors":"Sophia Ulman, Alex M Loewen, Ashley L Erdman, Sylvia Õunpuu, Ross Chafetz, Kirsten Tulchin-Francis, Tishya A L Wren","doi":"10.1123/jab.2025-0034","DOIUrl":"10.1123/jab.2025-0034","url":null,"abstract":"Evaluation of trunk stability is common during return-to-activity assessments. While the use of motion capture for assessment of movement quality is also becoming more popular, it is critical that the trunk is modeled similarly across participants. The purpose of this study was to determine how adjusting marker placement at the sternum, cervical, and thorax locations for purposes of defining the trunk segment influences trunk kinematics. Sagittal plane trunk angles of 18 participants were computed for a comprehensive set of trunk model variations during standing, gait, and a drop vertical jump. Comparisons included variations from a single marker set altered at the sternum, cervical, and thorax locations. Intraclass correlation coefficients were computed per trunk marker combination to determine agreement with the recommended marker set. Agreement ranged from poor to excellent across all 3 tasks with the worst agreement observed during gait and across the sternum marker variations. Alternatively, few discrepancies were observed between the 2 cervical marker locations or during the drop vertical jump task. Consistent and reliable modeling of the trunk is critical for return-to-activity evaluation. The recommended model for defining the trunk segment includes marker placements on the jugular notch, xiphoid process, and first and 10th thoracic spinous processes.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":" ","pages":"485-492"},"PeriodicalIF":1.6,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144838629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Reliability of a Lower-Extremity Shear Force Control Task in Young, Uninjured Adults. 年轻、未受伤成人下肢剪切力控制任务的可靠性。

IF 1.3 4区医学

Journal of Applied Biomechanics Pub Date : 2025-08-11 Print Date: 2025-10-01 DOI: 10.1123/jab.2024-0319

Madison J Mingo, Amelia S Lanier, Adam B Rosen, Elizabeth A Wellsandt, Brian A Knarr

{"title":"Reliability of a Lower-Extremity Shear Force Control Task in Young, Uninjured Adults.","authors":"Madison J Mingo, Amelia S Lanier, Adam B Rosen, Elizabeth A Wellsandt, Brian A Knarr","doi":"10.1123/jab.2024-0319","DOIUrl":"10.1123/jab.2024-0319","url":null,"abstract":"A novel shear force control task has previously been shown to elucidate different neuromuscular control strategies among individuals after anterior cruciate ligament injury, individuals following anterior cruciate ligament reconstruction, uninjured collegiate athletes, and uninjured recreational athletes. However, the reliability of the methodology has not been evaluated. The purpose of this study was to determine the reliability of this methodology in a population with no lower-extremity injury. Thirteen individuals (7 men, 24.7 [4.8] y, body mass index: 23.9 [3.6] kg/m2) completed a standing force control task in the medial/lateral and anterior/posterior directions for each leg on 2 separate occasions (1 wk apart). Intraclass correlation coefficient with 95% confidence intervals, standard error of measurement, and minimum detectable change were calculated to assess the reliability of largest Lyapunov exponent values. Intraclass correlation coefficient values across all measures were good to excellent (r = .78-.92). Reliability was highest in the medial/lateral direction at the right lower extremity (r = .92; 95% confidence interval, .75-.98, P = .025). The shear force control task exhibited good to excellent reliability across measures, suggesting that it can reliably measure force control variability. This methodology may provide insight into neuromuscular control strategies following injury.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":" ","pages":"469-472"},"PeriodicalIF":1.3,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12576970/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144823253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Muscle Synergies in Single-Leg Hops: Neuromuscular Adaptations for Increased Hop Distance. 单腿跳跃的肌肉协同作用：增加跳跃距离的神经肌肉适应。

IF 1.3 4区医学

Journal of Applied Biomechanics Pub Date : 2025-06-23 Print Date: 2025-10-01 DOI: 10.1123/jab.2024-0132

Hiroki Saito, Ayu Yamano, Nanae Suzuki, Kazuya Matsushita, Hikaru Yokoyama, Joachim Van Cant, Kimitaka Nakazawa

{"title":"Muscle Synergies in Single-Leg Hops: Neuromuscular Adaptations for Increased Hop Distance.","authors":"Hiroki Saito, Ayu Yamano, Nanae Suzuki, Kazuya Matsushita, Hikaru Yokoyama, Joachim Van Cant, Kimitaka Nakazawa","doi":"10.1123/jab.2024-0132","DOIUrl":"10.1123/jab.2024-0132","url":null,"abstract":"This study investigated differences in muscle synergies in the trunk and lower limbs during single-leg hops at 30% (SLH30) and 100% (SLH100) of maximum distance to understand the neuromechanical mechanisms underlying longer hop distances. Unilateral surface EMG data were collected from 16 muscle groups in the trunk and lower limbs during both SLH30 and SLH100 in 10 healthy males. Nonnegative matrix factorization was used to extract muscle synergies. The number of muscle synergies in SLH100 was significantly higher than in SLH30 (P = .0078, effect size = 1.28), with median values of 4.0 (3.0-5.0) for SLH30 and 5.0 (4.0-6.0) for SLH100. We identified 4 shared muscle synergies between SLH30 and SLH100, signifying a foundational neuromuscular control strategy. In addition, muscle synergies specific to SLH100 demonstrated the involvement of abdominal muscles and hip and ankle extensor muscles, highlighting their contributions to achieving longer hopping distances. Interventions aimed at enhancing SLH performance for return to sport may benefit from incorporating exercises targeting these synergy patterns. However, it should be noted that SLH100 synergies primarily involved nonknee muscles, warranting caution when using SLH as an indicator of knee function as improvements in hop distance may not directly reflect knee-specific recovery.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":" ","pages":"418-426"},"PeriodicalIF":1.3,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144477936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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