Journal of Applied Biomechanics最新文献_第10页

Medial and Lateral Tibiofemoral Compressive Forces in Patients Following Unilateral Total Knee Arthroplasty During Stationary Cycling. 固定循环期间单侧全膝关节置换术后患者的胫股内侧和外侧压缩力。

IF 1.4 4区医学

Journal of Applied Biomechanics Pub Date : 2022-05-19 DOI: 10.1123/jab.2020-0324

Erik T. Hummer, Tanner A. Thorsen, Joshua T. Weinhandl, J. Reinbolt, H. Cates, Songning Zhang

{"title":"Medial and Lateral Tibiofemoral Compressive Forces in Patients Following Unilateral Total Knee Arthroplasty During Stationary Cycling.","authors":"Erik T. Hummer, Tanner A. Thorsen, Joshua T. Weinhandl, J. Reinbolt, H. Cates, Songning Zhang","doi":"10.1123/jab.2020-0324","DOIUrl":"https://doi.org/10.1123/jab.2020-0324","url":null,"abstract":"Patients following unilateral total knee arthroplasty (TKA) display interlimb differences in knee joint kinetics during gait and more recently, stationary cycling. The purpose of this study was to use musculoskeletal modeling to estimate total, medial, and lateral tibiofemoral compressive forces for patients following TKA during stationary cycling. Fifteen patients of unilateral TKA, from the same surgeon, participated in cycling at 2 workrates (80 and 100 W). A knee model (OpenSim 3.2) was used to estimate total, medial, and lateral tibiofemoral compressive forces for replaced and nonreplaced limbs. A 2 × 2 (limb × workrate) and a 2 × 2 × 2 (compartment × limb × workrate) analysis of variance were run on the selected variables. Peak medial tibiofemoral compressive force was 23.5% lower for replaced compared to nonreplaced limbs (P = .004, G = 0.80). Peak medial tibiofemoral compressive force was 48.0% greater than peak lateral tibiofemoral compressive force in nonreplaced limbs (MD = 344.5 N, P < .001, G = 1.6) with no difference in replaced limbs (P = .274). Following TKA, patients have greater medial compartment loading on their nonreplaced compared to their replaced limbs and ipsilateral lateral compartment loading. This disproportionate loading may be cause for concern regarding exacerbating contralateral knee osteoarthritis.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2022-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49501690","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: 1

Characterizing Lumbar Spine Kinematics and Kinetics During Simulated Low-Speed Rear Impact Collisions. 模拟低速后碰撞时腰椎运动学和动力学特征。

IF 1.4 4区医学

Journal of Applied Biomechanics Pub Date : 2022-05-17 DOI: 10.1123/jab.2021-0189

K. Fewster, Jackie D. Zehr, Chad E. Gooyers, R. Parkinson, J. Callaghan

{"title":"Characterizing Lumbar Spine Kinematics and Kinetics During Simulated Low-Speed Rear Impact Collisions.","authors":"K. Fewster, Jackie D. Zehr, Chad E. Gooyers, R. Parkinson, J. Callaghan","doi":"10.1123/jab.2021-0189","DOIUrl":"https://doi.org/10.1123/jab.2021-0189","url":null,"abstract":"BACKGROUND\u0000Recent work has demonstrated that low back pain is a common complaint following low-speed collisions. Despite frequent pain reporting, no studies involving human volunteers have been completed to examine the exposures in the lumbar spine during low-speed rear impact collisions.\u0000\u0000\u0000METHODS\u0000Twenty-four participants were recruited and a custom-built crash sled simulated rear impact collisions, with a change in velocity of 8 km/h. Randomized collisions were completed with and without lumbar support. Inverse dynamics analyses were conducted, and outputs were used to generate estimates of peak L4/L5 joint compression and shear.\u0000\u0000\u0000RESULTS\u0000Average (SD) peak L4/L5 compression and shear reaction forces were not significantly different without lumbar support (compression = 498.22 N [178.0 N]; shear = 302.2 N [98.5 N]) compared to with lumbar support (compression = 484.5 N [151.1 N]; shear = 291.3 N [176.8 N]). Lumbar flexion angle at the time of peak shear was 36° (12°) without and 33° (11°) with lumbar support.\u0000\u0000\u0000CONCLUSION\u0000Overall, the estimated reaction forces were 14% and 30% of existing National Institute of Occupational Safety and Health occupational exposure limits for compression and shear during repeated lifting, respectively. Findings also demonstrate that, during a laboratory collision simulation, lumbar support does not significantly influence the total estimated L4/L5 joint reaction force.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2022-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49084816","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: 1

Lower Limb Extension Power is Associated With Slope Walking Joint Loading Mechanics in Older Adults. 老年人下肢伸展力与斜坡行走关节负荷力学有关。

IF 1.4 4区医学

Journal of Applied Biomechanics Pub Date : 2022-05-06 DOI: 10.1123/jab.2021-0342

Peter B Thomsen, Jacob W Aumeier, Chelsey A Wilbur, Evan G. Oro, Hunter B. Carlson, Jesse C. Christensen

{"title":"Lower Limb Extension Power is Associated With Slope Walking Joint Loading Mechanics in Older Adults.","authors":"Peter B Thomsen, Jacob W Aumeier, Chelsey A Wilbur, Evan G. Oro, Hunter B. Carlson, Jesse C. Christensen","doi":"10.1123/jab.2021-0342","DOIUrl":"https://doi.org/10.1123/jab.2021-0342","url":null,"abstract":"Fall-related injuries are associated with muscle weakness and common during slope walking in older adults. However, no study has evaluated the relationship between muscle weakness, measured by maximal lower limb extension power, and older adults' ability to navigate slope walking for a better understanding of fall prevention. Therefore, the purpose of this study was to investigate the association between maximal lower limb extension power and joint mechanics during slope walking. Fifteen healthy older adults were tested. Lower limb extension power was measured using the Leg Extension Power Rig. Kinematic and kinetic analysis was performed during level (0°), incline (10°), and decline (10°) slope walking. Greater maximal lower limb extension power was significantly (p < .050; Cohen's f2 > 0.35) associated with multiple kinetic and kinematic joint mechanic variables across stance phase of the gait cycle during level, incline, and decline walking. These findings will allow clinicians to better educate patients and develop interventions focused on fall prevention and improving functional mobility in older adults.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2022-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44712999","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 Impact Kinematics and Brain Deformation in Paired Opposing Youth Football Players. 配对对抗青少年足球运动员头部碰撞运动学与脑变形。

IF 1.4 4区医学

Journal of Applied Biomechanics Pub Date : 2022-04-28 DOI: 10.1123/jab.2021-0098

Gabriella M Milef, L. Miller, Daniella M DiGuglielmo, Tanner D Payne, Tanner M. Filben, J. Urban, Joel Stitzel

{"title":"Head Impact Kinematics and Brain Deformation in Paired Opposing Youth Football Players.","authors":"Gabriella M Milef, L. Miller, Daniella M DiGuglielmo, Tanner D Payne, Tanner M. Filben, J. Urban, Joel Stitzel","doi":"10.1123/jab.2021-0098","DOIUrl":"https://doi.org/10.1123/jab.2021-0098","url":null,"abstract":"Head impact exposure is often quantified using peak resultant kinematics. While kinematics describes the inertial response of the brain to impact, they do not fully capture the dynamic brain response. Strain, a measure of the tissue-level response of the brain, may be a better predictor of injury. In this study, kinematic and strain metrics were compared to contact characteristics in youth football. Players on 2 opposing teams were instrumented with head impact sensors to record impact kinematics. Video was collected to identify contact scenarios involving opposing instrumented players (ie, paired contact scenarios) and code contact characteristics (eg, player role, impact location). A previously validated, high-resolution brain finite element model, the atlas-based brain model, was used to simulate head impacts and calculate strain metrics. Fifty-two paired contact scenarios (n = 105 impacts) were evaluated. Lighter players tended to have greater biomechanical metrics compared to heavier players. Impacts to the top of the helmet were associated with lower strain metrics. Overall, strain was better correlated with rotational kinematics, suggesting these metrics may be better predictors of the tissue-level brain response than linear kinematics. Understanding the effect of contact characteristics on brain strain will inform future efforts to improve sport safety.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2022-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47661259","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: 2

Gait Slip-Induced Fall-Type Assessment Based on Regular Gait Characteristics in Older Adults. 基于老年人常规步态特征的步态滑倒型评估。

IF 1.4 4区医学

Journal of Applied Biomechanics Pub Date : 2022-04-28 DOI: 10.1123/jab.2021-0337

Shuaijie Wang, Y. Pai, T. Bhatt

{"title":"Gait Slip-Induced Fall-Type Assessment Based on Regular Gait Characteristics in Older Adults.","authors":"Shuaijie Wang, Y. Pai, T. Bhatt","doi":"10.1123/jab.2021-0337","DOIUrl":"https://doi.org/10.1123/jab.2021-0337","url":null,"abstract":"Older adults could experience split falls or feet-forward falls following an unexpected slip in gait due to different neuromuscular vulnerabilities, and different intervention strategies would be required for each type of faller. Thus, this study aimed to investigate the key factors affecting the fall types based on regular gait pattern. A total of 105 healthy older adults who experienced a laboratory-induced slip and fall were included. Their natural walking trial immediately prior to the novel slip trial was analyzed. To identify the factors related to fall type, gait characteristics and demographic factors were determined using univariate logistic regression, and then stepwise logistic regression was conducted to assess the slip-induced fall type based on these factors. The best fall-type prediction model involves gait speed and recovery foot angular velocity, which could predict 70.5% of feet-forward falls and 86.9% of split falls. Body mass index was also a crucial fall-type prediction with an overall prediction accuracy of 70.5%. Along with gait parameters, 84.1% of feet-forward falls and 78.7% of split falls could be predicted. The findings in this study revealed the determinators related to fall types, which enhances our knowledge of the mechanism associated to slip-induced fall and would be helpful for the development of tailored interventions for slip-induced fall prevention.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2022-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48061287","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

Can Increased Locomotor Task Difficulty Differentiate Knee Muscle Forces After Anterior Cruciate Ligament Reconstruction? 前交叉韧带重建后运动任务难度的增加能否区分膝关节肌肉力量?

IF 1.4 4区医学

Journal of Applied Biomechanics Pub Date : 2022-04-01 DOI: 10.1123/jab.2021-0215

Megan J Schroeder, Samuel A Acuña, Chandramouli Krishnan, Yasin Y Dhaher

{"title":"Can Increased Locomotor Task Difficulty Differentiate Knee Muscle Forces After Anterior Cruciate Ligament Reconstruction?","authors":"Megan J Schroeder, Samuel A Acuña, Chandramouli Krishnan, Yasin Y Dhaher","doi":"10.1123/jab.2021-0215","DOIUrl":"https://doi.org/10.1123/jab.2021-0215","url":null,"abstract":"Changes in knee mechanics following anterior cruciate ligament (ACL) reconstruction are known to be magnified during more difficult locomotor tasks, such as when descending stairs. However, it is unclear if increased task difficulty could distinguish differences in forces generated by the muscles surrounding the knee. This study examined how knee muscle forces differ between individuals with ACL reconstruction with different graft types (hamstring tendon and patellar tendon autograft) and \"healthy\" controls when performing tasks with increasing difficulty. Dynamic simulations were used to identify knee muscle forces in 15 participants when walking overground and descending stairs. The analysis was restricted to the stance phase (foot contact through toe-off), yielding 162 separate simulations of locomotion in increasing difficulty: overground walking, step-to-floor stair descent, and step-to-step stair descent. Results indicated that knee muscle forces were significantly reduced after ACL reconstruction, and stair descent tasks better discriminated changes in the quadriceps and gastrocnemii muscle forces in the reconstructed knees. Changes in quadriceps forces after a patellar tendon graft and changes in gastrocnemii forces after a hamstring tendon graft were only revealed during stair descent. These results emphasize the importance of incorporating sufficiently difficult tasks to detect residual deficits in muscle forces after ACL reconstruction.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10833242","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: 1

Erratum: Kawakami et al (2019). 勘误:Kawakami et al(2019)。

IF 1.4 4区医学

Journal of Applied Biomechanics Pub Date : 2022-04-01 DOI: 10.1123/jab.2022-0012

引用次数: 0

Shoulder Kinesio Taping Does Not Change Biomechanical Deficits Associated With Scapular Dyskinesis. 肩胛骨运动功能不良不能改变肩胛骨运动障碍相关的生物力学缺陷。

IF 1.4 4区医学

Journal of Applied Biomechanics Pub Date : 2022-04-01 DOI: 10.1123/jab.2021-0259

Sevgi Sevi Yeşilyaprak, Ertuğrul Yüksel, Melike Gizem Kalaycı, Nuri Karabay, Lori A Michener

{"title":"Shoulder Kinesio Taping Does Not Change Biomechanical Deficits Associated With Scapular Dyskinesis.","authors":"Sevgi Sevi Yeşilyaprak, Ertuğrul Yüksel, Melike Gizem Kalaycı, Nuri Karabay, Lori A Michener","doi":"10.1123/jab.2021-0259","DOIUrl":"https://doi.org/10.1123/jab.2021-0259","url":null,"abstract":"Observable scapular dyskinesis is associated with biomechanical deficits. Preventative interventions aimed at correcting these deficits may aid in preventing the development and resolution of shoulder pain. Our purpose was to investigate the effects of kinesio taping (KT) on common biomechanical deficits associated with scapular dyskinesis and shoulder pain. Participants (n = 51) with observable scapular dyskinesis, and without shoulder pain were randomized to KT, KT-placebo, or a no-treatment control group. Measurements taken before, immediately after taping, and 3 days later included pectoralis minor muscle length, lower trapezius muscle strength, scapular upward rotation angle at 0° to 120° in scapular plane humeral elevation and acromiohumeral distance. There were no changes in scapular upward rotation, lower trapezius strength, and acromiohumeral distance immediately after taping or 3 days later compared to baseline (P > .05). The pectoralis minor increased in length in the KT group on day 3 compared to directly after taping (P = .03), but no difference between groups or interaction between time and group were determined (P > .05). Scapular dyskinesis prevalence did not change over time in any group (P > .05). In people with scapular dyskinesis free from shoulder pain, KT applied to the shoulder cannot be recommended to ameliorate the biomechanical deficits associated with shoulder pain.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10508555","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

Development and Assessment of a Method to Estimate the Value of a Maximum Voluntary Isometric Contraction Electromyogram from Submaximal Electromyographic Data. 从亚最大肌电图数据估计最大自主等距收缩肌电图价值的方法的发展和评估。

IF 1.4 4区医学

Journal of Applied Biomechanics Pub Date : 2022-04-01 Epub Date: 2022-02-25 DOI: 10.1123/jab.2021-0229

Hamid Norasi, Jordyn Koenig, Gary A Mirka

{"title":"Development and Assessment of a Method to Estimate the Value of a Maximum Voluntary Isometric Contraction Electromyogram from Submaximal Electromyographic Data.","authors":"Hamid Norasi, Jordyn Koenig, Gary A Mirka","doi":"10.1123/jab.2021-0229","DOIUrl":"https://doi.org/10.1123/jab.2021-0229","url":null,"abstract":"The electromyographic (EMG) normalization (often to maximum voluntary isometric contraction [MVIC]) is used to control for interparticipant and day-to-day variations. Repeated MVIC exertions may be inadvisable from participants' safety perspective. This study developed a technique to predict the MVIC EMG from submaximal isometric voluntary contraction EMG. On day 1, 10 participants executed moment exertions of 100%, 60%, 40%, and 20% of the maximum (biceps brachii, rectus femoris, neck flexors, and neck extensors) as the EMG data were collected. On day 2, the participants replicated the joint moment values from day 1 (60%, 40%, and 20%) and also performed MVIC exertions. Using the ratios between the MVIC EMGs and submaximal isometric voluntary contraction EMG data values established on day 1, and the day 2 submaximal isometric voluntary contraction EMG data values, the day 2 MVIC EMGs were predicted. The average absolute percentage error between the predicted and actual MVIC EMG values for day 2 were calculated: biceps brachii, 45%; rectus femoris, 27%; right and left neck flexors, 27% and 33%, respectively; and right and left neck extensors, both 29%. There will be a trade-off between the required accuracy of the MVIC EMG and the risk of injury due to exerting actual MVIC. Thus, using the developed predictive technique may depend on the study circumstances.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39657683","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: 1

Variable Stiffness Shoes for Knee Osteoarthritis: An Evaluation of 3-Dimensional Gait Mechanics and Medial Joint Contact Forces. 膝关节骨关节炎的变刚度鞋:三维步态力学和内侧关节接触力的评估。

IF 1.4 4区医学

Journal of Applied Biomechanics Pub Date : 2022-04-01 Epub Date: 2022-03-21 DOI: 10.1123/jab.2021-0217

Ethan Steiner, Katherine A Boyer

{"title":"Variable Stiffness Shoes for Knee Osteoarthritis: An Evaluation of 3-Dimensional Gait Mechanics and Medial Joint Contact Forces.","authors":"Ethan Steiner, Katherine A Boyer","doi":"10.1123/jab.2021-0217","DOIUrl":"https://doi.org/10.1123/jab.2021-0217","url":null,"abstract":"The study aim was to quantify the impact of a commercially available variable stiffness shoe (VSS) on 3-dimensional ankle, knee, and hip mechanics and estimated knee contact forces compared with a control shoe. Fourteen participants (10 females) with knee osteoarthritis completed gait analysis after providing informed consent. Shoe conditions tested were control shoe (New Balance MW411v2) and VSS (Abeo SMART3400). An OpenSim musculoskeletal model with static optimization was used to estimate knee contact forces. There were no differences in joint kinematics or in the knee adduction or flexion moments (P = .06; P = .2). There were increases in the knee internal and external rotation (P = .02; P = .03) and hip adduction and internal rotation moments for VSS versus control (P = .03; P = .02). The estimated contact forces were not different between shoes (total P = .3, medial P = .1, and lateral P = .8), but contact force changes were correlated with changes in the knee adduction moment (medial r2 = .61; P < .007). High variability in knee flexion moment changes and increases in the internal rotation moment combined with small decreases in the knee adduction moment did not lead to decreases in estimated contact forces. These results suggest that evaluation of VSS using only the knee adduction moment may not adequately capture its impact on osteoarthritis.","PeriodicalId":54883,"journal":{"name":"Journal of Applied Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40311956","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: 2