The Effect of Exhaustive Protocol on Knee Muscle Co-contraction in Healthy People and with a Pronated Foot during Running

Q3 Medicine
A. Fasihi, M. Siahkouhian, A. Jafarnezhadgero, Lotfali Bolboli, Hamed Sheikhalizade
{"title":"The Effect of Exhaustive Protocol on Knee Muscle Co-contraction in Healthy People and with a Pronated Foot during Running","authors":"A. Fasihi, M. Siahkouhian, A. Jafarnezhadgero, Lotfali Bolboli, Hamed Sheikhalizade","doi":"10.30491/JMM.23.2.161","DOIUrl":null,"url":null,"abstract":"Background and Aim: Fatigue and abnormalities in the lower extremities, such as the pronated foot, can adversely affect the biomechanics of human movements such as running, leading to a lack of muscle contraction and unstable symptoms in the joints of the lower extremities (knees). Therefore, the main purpose of this study was to investigate the effect of exhaustive protocol on knee muscle co-contraction in pronated and healthy individuals while running. Methods: Fourteen young men with pronated feet and 14 healthy feet participated in the study. Electromyography activities of the selected muscles before and after fatigue protocol were recorded. The statistical analysis was performed using the SPSS software and repeated measures analysis of variance (ANOVA) (P ≤0.05). Results: Findings in the pronated foot compared with the healthy foot group showed that the knee general cocontraction during the mid-stance phase (P = 0.026, d = 0.81) and swing (P = 0.046, d = 0.81) and Vastuslateralis/vastusmedialis directed co-contraction of the knee was significantly lower during the heel contact phase (P = 0.049, d = 0.81). Flexural/extensor directed co-contraction in comparison of pretest to posttest during heel propulsion phase in both groups of pronated foot (P = 0.037, d = 0.81) and healthy foot (P = 0.037, 0.81 = d) decreased significantly. The other components did not show any significant differences. Conclusion: The co-contraction of the examined muscles in the knee joint has decreased in pronated foot in different stages of stance compared to the healthy foot group. This may be due to the over-activity of a group of muscles to overcome the instability of the knee and to prevent the extra movements of this joint when fatigue occurs, and it is also possible that this over-activity of a group of muscles has affected the running mechanics of individual with pronated foot and at different stages of the running cycle caused additional pressure on the knee joint and the musculoskeletal system in the knee joint loses its ability to properly absorb shock when running, increasing joint looseness and the risk of joint damage due to fatigue Increase.","PeriodicalId":16394,"journal":{"name":"Journal of Military Medicine","volume":"23 1","pages":"161-171"},"PeriodicalIF":0.0000,"publicationDate":"2021-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Military Medicine","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.30491/JMM.23.2.161","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Medicine","Score":null,"Total":0}
引用次数: 0

Abstract

Background and Aim: Fatigue and abnormalities in the lower extremities, such as the pronated foot, can adversely affect the biomechanics of human movements such as running, leading to a lack of muscle contraction and unstable symptoms in the joints of the lower extremities (knees). Therefore, the main purpose of this study was to investigate the effect of exhaustive protocol on knee muscle co-contraction in pronated and healthy individuals while running. Methods: Fourteen young men with pronated feet and 14 healthy feet participated in the study. Electromyography activities of the selected muscles before and after fatigue protocol were recorded. The statistical analysis was performed using the SPSS software and repeated measures analysis of variance (ANOVA) (P ≤0.05). Results: Findings in the pronated foot compared with the healthy foot group showed that the knee general cocontraction during the mid-stance phase (P = 0.026, d = 0.81) and swing (P = 0.046, d = 0.81) and Vastuslateralis/vastusmedialis directed co-contraction of the knee was significantly lower during the heel contact phase (P = 0.049, d = 0.81). Flexural/extensor directed co-contraction in comparison of pretest to posttest during heel propulsion phase in both groups of pronated foot (P = 0.037, d = 0.81) and healthy foot (P = 0.037, 0.81 = d) decreased significantly. The other components did not show any significant differences. Conclusion: The co-contraction of the examined muscles in the knee joint has decreased in pronated foot in different stages of stance compared to the healthy foot group. This may be due to the over-activity of a group of muscles to overcome the instability of the knee and to prevent the extra movements of this joint when fatigue occurs, and it is also possible that this over-activity of a group of muscles has affected the running mechanics of individual with pronated foot and at different stages of the running cycle caused additional pressure on the knee joint and the musculoskeletal system in the knee joint loses its ability to properly absorb shock when running, increasing joint looseness and the risk of joint damage due to fatigue Increase.
力竭方案对健康人和俯卧足跑步时膝关节肌肉共同收缩的影响
背景和目的:疲劳和下肢异常,如内翻足,会对人体运动(如跑步)的生物力学产生不利影响,导致肌肉缺乏收缩,下肢(膝盖)关节出现不稳定症状。因此,本研究的主要目的是研究穷举方案对内旋和健康个体跑步时膝关节肌肉共同收缩的影响。方法:14名年轻男性的内旋足和14名健康男性的脚参与研究。记录疲劳方案前后选定肌肉的肌电图活动。结果:与健康足组相比,内旋足组在站立中期(P=0.026,d=0.81)和摆动期(P=0.046,d=0.82)的膝关节总体共收缩和股外侧肌/股内侧肌定向的膝关节共收缩在足跟接触阶段显著降低(P=0.049,d=0.81)。在足跟推进阶段,与测试前和测试后相比,内旋足组(P=0.037,d=0.81)和健康足组(P=0.037,0.81=d)的弯曲/伸肌定向共收缩显著降低。其他成分没有显示出任何显著差异。结论:与健康足组相比,内旋足在不同站立阶段的膝关节肌肉共同收缩减少。这可能是由于一组肌肉的过度活动,以克服膝盖的不稳定性,一组肌肉的这种过度活动也可能影响了内旋足患者的跑步机制,并且在跑步周期的不同阶段对膝关节造成了额外的压力,增加关节松动和疲劳导致关节损伤的风险增加。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Journal of Military Medicine
Journal of Military Medicine Medicine-Public Health, Environmental and Occupational Health
CiteScore
2.60
自引率
0.00%
发文量
0
期刊介绍: Journal of Military Medicine is a Bimonthly peer-reviewed medical journal covering research and developments in the field of health and medicine in military and crisis settings. The journal was established in 1999. It publishes original research reports, editorials, letters to the editor, and reviews.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信