Journal of Applied Biomechanics最新文献_第2页

Relationship of Age and Running Biomechanics in Female Recreational Runners. 女性休闲跑者年龄与跑步生物力学的关系。

IF 1.1 4区医学

Journal of Applied Biomechanics Pub Date : 2025-01-11 DOI: 10.1123/jab.2024-0117

Heather M Hamilton, Hunter J Bennett, Mira Mariano, Rumit Singh Kakar

{"title":"Relationship of Age and Running Biomechanics in Female Recreational Runners.","authors":"Heather M Hamilton, Hunter J Bennett, Mira Mariano, Rumit Singh Kakar","doi":"10.1123/jab.2024-0117","DOIUrl":"https://doi.org/10.1123/jab.2024-0117","url":null,"abstract":"Middle-age and older runners demonstrate differences in running biomechanics compared with younger runners. Female runners demonstrate differences in running biomechanics compared with males, and females experience hormonal changes during menopause that may also affect age-related changes in running biomechanics. The purpose of this study was to determine the relationship between age and running biomechanics in healthy female recreational runners. Fifty-two participants (ages 27-65 y) ran on an instrumented treadmill at 2 different self-selected speeds: easy pace and 5 km race pace. Lower-extremity kinematic and kinetic variables were calculated from 14 consecutive strides. Linear regression was used to determine the relationship between age and lower-extremity running biomechanics, controlling for self-selected running speed. There was a negative relationship between age and easy pace (R = -.49, P < .001) and age and 5 km race pace (R = -.43, P = .001). After controlling for self-selected running speed, there were no significant relationships between age and running biomechanics for either running speed. Several biomechanical variables were moderately to strongly correlated with running speed. Running speed should be considered when investigating age-related differences in running biomechanics.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":" ","pages":"1-8"},"PeriodicalIF":1.1,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142973394","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

Peak Weight Acceptance, Mid Stance Trough, and Peak Push-Off Force Symmetry Are Decreased in Older Adults Compared With Young Adults. 与年轻人相比，老年人的峰值体重接受度、中位波谷和峰值推离力对称性降低。

IF 1.1 4区医学

Journal of Applied Biomechanics Pub Date : 2025-01-11 DOI: 10.1123/jab.2024-0027

Theresa L Libera, Jill Streamer, Robin M Queen

{"title":"Peak Weight Acceptance, Mid Stance Trough, and Peak Push-Off Force Symmetry Are Decreased in Older Adults Compared With Young Adults.","authors":"Theresa L Libera, Jill Streamer, Robin M Queen","doi":"10.1123/jab.2024-0027","DOIUrl":"https://doi.org/10.1123/jab.2024-0027","url":null,"abstract":"Gait abnormalities affect an individual's ability to navigate the world independently and occur in 10% of older adults. Examining age-related gait symmetry in nonlaboratory environments is necessary for understanding mobility limitations in older adults. This study examined gait symmetry differences between older and younger adults using in-shoe force sensors. Walking trials were performed at a preferred speed. This is a secondary analysis of data from different studies in which young adults completed 7 trials and older adults completed 3 trials to decrease the impact of fatigue on outcomes in the clinical trial. Peak weight acceptance, mid stance trough, peak push-off, stance time, and impulse were collected during each step within a trial. Symmetry was determined using the absolute symmetry index. A linear mixed effects model showed a significant difference in peak weight acceptance force (P = .039), mid stance trough (P < .001), and peak push-off (P = .007) symmetry between groups. These results indicate that older adults have lower symmetry in peak weight acceptance, mid stance trough, and peak push-off during gait compared with young adults. Understanding how natural loading patterns change throughout life could improve our understanding of how load and load symmetry relate to mobility impairments in older adults.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":" ","pages":"1-7"},"PeriodicalIF":1.1,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142973393","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 Faster Walking Speed Is Important for Improving Biomechanical Function and Walking Performance in Stroke Survivors. 更快的步行速度对提高生物力学功能和步行性能很重要。

IF 1.1 4区医学

Journal of Applied Biomechanics Pub Date : 2025-01-10 DOI: 10.1123/jab.2023-0230

Hannah L Jarvis, Philip Nagy, Neil D Reeves

{"title":"A Faster Walking Speed Is Important for Improving Biomechanical Function and Walking Performance in Stroke Survivors.","authors":"Hannah L Jarvis, Philip Nagy, Neil D Reeves","doi":"10.1123/jab.2023-0230","DOIUrl":"10.1123/jab.2023-0230","url":null,"abstract":"This study compares joint kinematics and kinetics of young stroke survivors who walk <0.79 m/s (slow) or >0.80 m/s (fast) with reference to a healthy able-bodied group and provides clinical recommendations for guiding the gait rehabilitation of stroke survivors. Twenty-two young stroke survivors (18-55 y) were recruited from 6 hospital sites in the United Kingdom. Stroke participants were classified by walking speed as slow (<0.79) or fast (>0.80 m/s), and joint kinematics and kinetics at the pelvis, hip, knee, and ankle were measured during walking on level ground at self-selected speed. Ten walking biomechanical parameters correlated to walking speed (ρ ≥ .550). Stroke survivors in the slow group walked with significantly greater range of sagittal plane pelvic motion (P < .009), reduced range of hip adduction and abduction (P < .011), and smaller peak hip extension angle (P < .011) and hip flexion moment (P < .029) for the paretic limb. For the nonparetic limb, a significantly reduced hip flexion moment (P < .040) was observed compared with the fast group and control. We are the first to report how biomechanical function during walking is compromised in young stroke survivors classified by walking speed as slow (<0.79 m/s) or fast (>0.80 m/s) and propose that these biomechanical parameters be used to inform rehabilitation programs to improve walking for stroke survivors.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":" ","pages":"70-86"},"PeriodicalIF":1.1,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142928730","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

Erratum. A Faster Walking Speed Is Important for Improving Biomechanical Function and Walking Performance in Stroke Survivors. 勘误表。更快的步行速度对改善中风幸存者的生物力学功能和步行表现很重要。

IF 1.1 4区医学

Journal of Applied Biomechanics Pub Date : 2025-01-10 DOI: 10.1123/jab.2025-0005

引用次数: 0

Influence of Experience, Training Frequency, and Sex on Climbing-Specific Grip Force in Rock Climbers of Varying Skill Level. 经验、训练频率和性别对不同技术水平攀岩者攀爬专项握力的影响。

IF 1.1 4区医学

Journal of Applied Biomechanics Pub Date : 2025-01-03 DOI: 10.1123/jab.2024-0056

Erika Nelson-Wong, Claire Lorbiecki, Shawn Wood, Stephanie Huang, Johnathon Crawley, Emily Higgins, Lena Parker, Kevin Cowell

{"title":"Influence of Experience, Training Frequency, and Sex on Climbing-Specific Grip Force in Rock Climbers of Varying Skill Level.","authors":"Erika Nelson-Wong, Claire Lorbiecki, Shawn Wood, Stephanie Huang, Johnathon Crawley, Emily Higgins, Lena Parker, Kevin Cowell","doi":"10.1123/jab.2024-0056","DOIUrl":"https://doi.org/10.1123/jab.2024-0056","url":null,"abstract":"Rock climbing is a growing sport at both professional and recreational levels. Rock climbing requires specific hand positions with high force outputs to adapt to changing terrain requirements. The purpose of this study was to explore associations between years of climbing experience, the frequency of training, and skill level on force production in 2 different climbing-specific hand positions. A secondary purpose was to investigate sex differences in force output across climbing skill levels. Forty-nine participants ranging from Beginner to Expert skill participated. Maximum isometric pull force was tested in half-crimp and open-hand positions. Force output was larger in half-crimp versus open-hand positions. Higher skill, years of experience, and training frequency were all significantly correlated to greater force output in both hand positions. There were no force differences between males and females for Beginner/Intermediate and Advanced levels; however, males had higher force than females for Expert groups. These findings provide insight for athletes, coaches, and clinicians working with climbers regarding tissue adaptations specific to climbing grip. These findings have implications for climbing-specific training, expectations for force output, injury prevention, and reliance on hand force versus climbing technique for females climbing at high levels.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":" ","pages":"1-9"},"PeriodicalIF":1.1,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142928731","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 Effect of Shoe Insole Stiffness Modifications on Walking Performance in Older Adults: A Feasibility Study. 鞋垫硬度改变对老年人行走性能的影响：一项可行性研究。

IF 1.1 4区医学

Journal of Applied Biomechanics Pub Date : 2025-01-03 DOI: 10.1123/jab.2024-0150

Logan T White, Philippe Malcolm, Jason R Franz, Kota Z Takahashi

{"title":"The Effect of Shoe Insole Stiffness Modifications on Walking Performance in Older Adults: A Feasibility Study.","authors":"Logan T White, Philippe Malcolm, Jason R Franz, Kota Z Takahashi","doi":"10.1123/jab.2024-0150","DOIUrl":"https://doi.org/10.1123/jab.2024-0150","url":null,"abstract":"Shoes or insoles embedded with carbon fiber materials to increase longitudinal stiffness have been shown to enhance running and walking performance in elite runners, and younger adults, respectively. It is unclear, however, if such stiffness modifications can translate to enhanced mobility in older adults who typically walk with greater metabolic cost of transport compared to younger adults. Here, we sought to test whether adding footwear stiffness via carbon fiber insoles could improve walking outcomes (eg, distance traveled and metabolic cost of transport) in older adults during the 6-minute walk test. 20 older adults (10 M/10 F; 75.95 [6.01] y) performed 6-minute walk tests in 3 different shoe/insole stiffnesses (low, medium, and high) and their own footwear (4 total conditions). We also evaluated participants' toe flexor strength and passive foot compliance to identify subject-specific factors that influence performance from added shoe/insole stiffnesses. We found no significant group differences in distance traveled or net metabolic cost of transport (P ≥ .171). However, weaker toe flexors were associated with greater improvement in distance traveled between the medium and low stiffness conditions (P = .033, r = -.478), indicating that individual foot characteristics may help identify potential candidates for interventions involving footwear stiffness modifications.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":" ","pages":"1-8"},"PeriodicalIF":1.1,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142928733","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 Association Between Lower Limb Joint Position Sense and Different Aspects of Gait Pattern in Individuals With Bilateral Knee Osteoarthritis. 双侧膝骨关节炎患者下肢关节位置感与步态不同方面的关系。

IF 1.1 4区医学

Journal of Applied Biomechanics Pub Date : 2025-01-03 DOI: 10.1123/jab.2024-0207

Mohadeseh Sarvestani, Neda Orakifar, Razieh Mofateh, Maryam Seyedtabib, Mehrnoosh Karimi, Mohammad Mehravar

{"title":"The Association Between Lower Limb Joint Position Sense and Different Aspects of Gait Pattern in Individuals With Bilateral Knee Osteoarthritis.","authors":"Mohadeseh Sarvestani, Neda Orakifar, Razieh Mofateh, Maryam Seyedtabib, Mehrnoosh Karimi, Mohammad Mehravar","doi":"10.1123/jab.2024-0207","DOIUrl":"https://doi.org/10.1123/jab.2024-0207","url":null,"abstract":"Knee osteoarthritis (KOA) can have more pronounced effects on joint position sense (JPS) accuracy and gait characteristics. The aim of this study is to investigate the association between lower limb JPS and different aspects of gait pattern including gait asymmetry and variability and spatiotemporal coordination in individuals with bilateral KOA. In this cross-sectional study, lower limb JPS of 43 individuals with bilateral KOA (mild and moderate) were measured. Participants' gait patterns during treadmill walking with self-selected comfortable speed were assessed. The correlations between JPS errors and gait parameters of limb with moderate KOA were analyzed. Positive relationships were found between stance time symmetry index and JPS errors of hip abduction (r = .46, P = .003), ankle plantar flexion (r = .33, P = .03), and ankle dorsiflexion (r = .33, P = .03). Positive relationship was found between single limb support time symmetry index and hip abduction JPS error (r = .41, P = .008). Significant negative associations were found between coefficient of variation of step length and JPS errors of knee extension (r = .47, P = .002) and ankle plantar flexion (r = .33, P = .003). Results did not show any significant relationship between lower limb JPS errors and walk ratio. It is likely that lower limb JPS deficits are partially responsible for some changes in gait patterns observed in individuals with bilateral KOA.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":" ","pages":"1-10"},"PeriodicalIF":1.1,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142928732","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

Investigation of a Theoretical Model for the Rotational Shot Put Technique. 旋转铅球技术理论模型研究

IF 1.1 4区医学

Journal of Applied Biomechanics Pub Date : 2024-11-13 DOI: 10.1123/jab.2023-0233

Tadahiko Kato, Kei Maeda, Jun Mizushima, Akira Maeda

{"title":"Investigation of a Theoretical Model for the Rotational Shot Put Technique.","authors":"Tadahiko Kato, Kei Maeda, Jun Mizushima, Akira Maeda","doi":"10.1123/jab.2023-0233","DOIUrl":"10.1123/jab.2023-0233","url":null,"abstract":"The biomechanics of the rotational shot put technique have been demonstrated. However, the causal relationships among kinematics and kinetics for achieving higher release velocity remain poorly understood. This study investigated these causal relationships among biomechanical variables for achieving a higher release velocity in the rotational shot put technique. The study included 22 male shot putters whose 3-dimensional motion was captured during official competitions. Key kinematic and kinetic variables throughout the shot put motion were calculated, as suggested by previous studies. Path analysis was used to explore a hierarchical model that postulates both direct and indirect effects among variables. The findings revealed that the impulse of the shot, system angular momentum, and system linear momentum were critical kinetic variables contributing directly to release velocity. Additionally, 8 kinematic variables significantly affected the impulse of the shot, including shoulder rotation, shot path length, and trunk tilt, while movements such as swings and extensions of the lower extremities were related to system momentum. This model not only provides a detailed understanding of the mechanics involved in the rotational technique but also informs technical coaching strategies in the shot put.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":" ","pages":"528-536"},"PeriodicalIF":1.1,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142592318","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

Erratum. Investigation of a Theoretical Model for the Rotational Shot Put Technique. 勘误。旋转推铅球技术理论模型的研究。

IF 1.1 4区医学

Journal of Applied Biomechanics Pub Date : 2024-11-13 DOI: 10.1123/jab.2024-0295

引用次数: 0

The Effect of Scapular Orientation on Measures of Rotator Cuff Tendon Impingement: A Simulation Study. 肩胛骨方向对肩袖肌腱撞击测量的影响：模拟研究

IF 1.1 4区医学

Journal of Applied Biomechanics Pub Date : 2024-11-11 Print Date: 2024-12-01 DOI: 10.1123/jab.2024-0037

Rebekah L Lawrence, Renee Ivens, Cheryl A Caldwell, Marcie Harris-Hayes

{"title":"The Effect of Scapular Orientation on Measures of Rotator Cuff Tendon Impingement: A Simulation Study.","authors":"Rebekah L Lawrence, Renee Ivens, Cheryl A Caldwell, Marcie Harris-Hayes","doi":"10.1123/jab.2024-0037","DOIUrl":"10.1123/jab.2024-0037","url":null,"abstract":"Mechanical impingement of the rotator cuff tendons against the acromion (subacromial) and glenoid (internal) during shoulder motions has long been thought to contribute to tears. Clinically, the risk for impingement is thought to be influenced by scapular movement impairments. Therefore, our purpose was to determine the extent to which simulated changes in scapular orientation impact the proximity between the rotator cuff tendon footprint and the acromion and glenoid during scapular plane abduction. Specifically, shoulder kinematics were tracked in 25 participants using a high-speed biplane videoradiography system. Scapular movement impairments were simulated by rotating each participant's scapula from their in vivo orientation about the scapular axes (±2°, ±5°, and ±10°). Subacromial and internal proximities were described using minimum distances, proximity center locations, and prevalence of contact. Statistical parametric mapping was used to investigate the extent to which these measures were impacted by simulated changes in scapular orientation. Simulated changes in scapular orientation significantly altered proximity patterns in a complex manner that depended on the impingement mechanism, humerothoracic elevation angle, and magnitude of the simulated change. Clinicians should be mindful of these factors when interpreting the potential effects during a clinical examination.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":" ","pages":"501-511"},"PeriodicalIF":1.1,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142632969","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