Journal of Applied Biomechanics最新文献

The Impact of Participant Instructions on Lumbopelvic Rhythm During Forward Spine Flexion and Return. 参与者的指导对腰骨盆节奏的影响在脊柱前屈和回。

IF 1.3 4区医学

Journal of Applied Biomechanics Pub Date : 2025-10-09 DOI: 10.1123/jab.2024-0245

Shabbir Ahmed Sany, Andrew J Wilkie, Mona Frey, Yanqing Yi, Diana De Carvalho

{"title":"The Impact of Participant Instructions on Lumbopelvic Rhythm During Forward Spine Flexion and Return.","authors":"Shabbir Ahmed Sany, Andrew J Wilkie, Mona Frey, Yanqing Yi, Diana De Carvalho","doi":"10.1123/jab.2024-0245","DOIUrl":"https://doi.org/10.1123/jab.2024-0245","url":null,"abstract":"Spine motion and outcome measures derived therein may be confounded by the motion instructions provided to participants during data collection. This observational analytical laboratory-controlled study explored the impact of instructions for forward flexion trials on the lumbopelvic ratio (LPR) and spine kinematics. Twenty-five participants (mean age: 25.68 [9.31] y) performed forward bending trials with general instructions and then specific instructions to avoid hip motion and follow pacing. Participants were equipped with triaxial accelerometers at the lumbar spine (first lumbar vertebra) and pelvis (second sacral vertebra) to measure lumbar and pelvic excursions and LPR across the movement phases. The Wilcoxon signed-rank test was used to compare outcome variables between conditions. Lumbar excursion did not differ significantly between conditions, whereas pelvic excursion was significantly reduced in the specific instructions condition (P < .05). LPR showed considerable variability in the specific instructions condition, but there was no significant difference from the general instruction condition. Thus, instructing participants to limit hip motion appears to reduce pelvic excursion during forward bending without statistically affecting lumbar motion or the LPR. Providing and reporting clear and precise movement instructions to participants is important as they can change kinematics. Further, it appears that verbal instructions alone are unlikely to achieve complete spine movement isolation in all participants.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":" ","pages":"1-9"},"PeriodicalIF":1.3,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145260202","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 Effects of Cheerleading Surfaces on Ankle Landing Characteristics During Vertical and Flip Landings. 拉拉队表面对垂直和翻转着地时踝关节着地特性的影响。

IF 1.3 4区医学

Journal of Applied Biomechanics Pub Date : 2025-10-06 DOI: 10.1123/jab.2025-0017

Anthony V Nguyen, Brooke A Slavens, Stephen C Cobb, Kristian M O'Connor

{"title":"The Effects of Cheerleading Surfaces on Ankle Landing Characteristics During Vertical and Flip Landings.","authors":"Anthony V Nguyen, Brooke A Slavens, Stephen C Cobb, Kristian M O'Connor","doi":"10.1123/jab.2025-0017","DOIUrl":"https://doi.org/10.1123/jab.2025-0017","url":null,"abstract":"Lateral ankle sprains are common in cheerleading, especially during tumbling. Landing surfaces influence injury risk by affecting joint mechanics, but few studies compare vertical and flip landings. This study examined the effects of a hard (HARD) and matted (MAT) surfaces on vertical drop (VERT) and flip (FLIP) landing tasks. Twelve collegiate cheerleaders performed both tasks with 3-dimensional kinematics and kinetics collected. Repeated-measures analyses of variance (task × surface, P < .05) analyzed sagittal and frontal plane variables. The FLIP task exhibited 84% greater peak ground reaction forces and 148% greater loading rates, as well as greater peak ankle angles and reduced ankle plantar flexion at initial contact compared to the VERT task. Increased foot velocities at initial contact during FLIP, driven by angular velocity, likely explained these heightened characteristics. HARD surface landings resulted in greater peak loading rates, peak angles, and inversion at initial contact. The peak plantar flexor moment was greater when landing on a HARD surface after a FLIP. Flip landings may elevate injury risks compared to vertical landings while supporting that harder landing surfaces increase injury risks. The significant differences between the tasks due to angular velocity differences also caution against generalizing vertical landings to landings within acrobatic sports.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":" ","pages":"1-8"},"PeriodicalIF":1.3,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145240421","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

Validity of Poststroke Gait Spatiotemporal and Joint Excursion Metrics Between Inertial Measurement Units and a Marker-Based System. 基于标记系统的惯性测量单元与脑卒中后步态时空和关节偏移度量的有效性。

IF 1.3 4区医学

Journal of Applied Biomechanics Pub Date : 2025-10-06 DOI: 10.1123/jab.2025-0098

Heather L Knight, Ethan B Schonhaut, Camden J Jacobs, Jesse C Dean

{"title":"Validity of Poststroke Gait Spatiotemporal and Joint Excursion Metrics Between Inertial Measurement Units and a Marker-Based System.","authors":"Heather L Knight, Ethan B Schonhaut, Camden J Jacobs, Jesse C Dean","doi":"10.1123/jab.2025-0098","DOIUrl":"https://doi.org/10.1123/jab.2025-0098","url":null,"abstract":"People with chronic stroke often walk with altered spatiotemporal parameters and joint excursions, metrics that can serve as intervention targets. Inertial measurement units (IMUs) allow such metrics to be quantified outside of a traditional motion capture laboratory. The purpose of this study was to quantify the validity of common poststroke biomechanical gait metrics between an IMU-based and a marker-based system during treadmill walking, a context that facilitates gait training interventions. For 61 people with chronic stroke, we assessed the validity of stride duration, stride length, and sagittal plane joint excursions of the bilateral hip, knee, and ankle in 2 ways: (1) Across participants, revealing whether both systems similarly characterize participants' average gait parameters; and (2) Within participants, revealing whether both systems similarly quantify stride-by-stride variance. Across participants, all joint metrics had either excellent (Lin correlation coefficient; LCC > .75) or good (LCC .60-.74) validity, suggesting that IMU-derived metrics that are often the target of treatment can be appropriately compared to existing population norms. In contrast, median validity within participants was excellent for stride duration, but only poor (LCC < .40) to fair (LCC .40-.59) for stride length and most joint excursions. Therefore, IMU-derived gait metrics quantified on a stride-by-stride basis should be interpreted cautiously.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":" ","pages":"1-8"},"PeriodicalIF":1.3,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145240364","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

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 1.3 4区医学

Journal of Applied Biomechanics Pub Date : 2025-09-29 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":"https://doi.org/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":"1-9"},"PeriodicalIF":1.3,"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 1.3 4区医学

Journal of Applied Biomechanics Pub Date : 2025-09-29 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":"https://doi.org/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":"1-8"},"PeriodicalIF":1.3,"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 1.3 4区医学

Journal of Applied Biomechanics Pub Date : 2025-09-23 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":"https://doi.org/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":"1-12"},"PeriodicalIF":1.3,"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 1.3 4区医学

Journal of Applied Biomechanics Pub Date : 2025-09-22 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":"https://doi.org/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":"1-6"},"PeriodicalIF":1.3,"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 1.3 4区医学

Journal of Applied Biomechanics Pub Date : 2025-09-03 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":"https://doi.org/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":"1-8"},"PeriodicalIF":1.3,"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 1.3 4区医学

Journal of Applied Biomechanics Pub Date : 2025-09-01 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":"1-8"},"PeriodicalIF":1.3,"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

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 1.3 4区医学

Journal of Applied Biomechanics Pub Date : 2025-08-12 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":"https://doi.org/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":"1-8"},"PeriodicalIF":1.3,"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