欢迎来到天天文库
浏览记录
ID:5289273
大小:341.10 KB
页数:5页
时间:2017-12-07
《不同振动条件下的正常人体下肢肌肉表面肌电分析》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、中{回扁复匡学志2013q~,第28卷,第12,ti]·基础研究·不同振动条件下的正常人体下肢肌肉表面肌电分析张园园潘化平许光旭。张文通朱奕曹蓉杜梅摘要目的:通过施加不同条件下的局部振动刺激,探讨局部振动刺激对于正常人体下肢主要肌肉群的影响。利用表面肌电(sEMG)分析的方法探寻局部振动刺激最佳的振动频率与位置。方法:正常男大学生10名,年龄(23.0±1.7)岁,身高(173.5±4.5)crll,体重(70.4±8.2)kg。分别于屈膝30~半蹲位接受频率为l0—50Hz的振动刺激,并采集振动前,振动中的表面肌电。选取左腿股直肌(REC)、半腱肌(SEM)、左腿胫骨前肌(TA)
2、与腓肠肌内侧头(MG)作为试验检测肌肉,分别以左胫骨前肌远端和跟腱为振动刺激点分析不同条件的振动刺激激活下肢肌群的表面肌电特征。结果:各种振动条件刺激均引起小腿肌肉放电量增加(P<0.05)。胫骨前肌的肌电值在两种刺激位置下H在不同频率问差异均有显著性意义(P3、电量增加,未对大腿肌肉产生显著影响。频率30—50Hz为正常人体小腿肌肉最佳的振动刺激频率。振动刺激作用在肌腱位置能有效引起肌肉兴奋,跟腱较胫前肌肌腱位置更易激活小腿肌肉肌群。关键词振动刺激;表面肌电;均方根振幅;频率;谐振中图分类号:R337,R244文献标识码:A文章编号:1001—1242(2013)一l2-1093—04Analysisofsurfaceelectromyogramoflowerlimbmusclesofnormalhumansunderdifferentvibrationconditions/ZHANGYuanyuan,PANHuaping,XUGuang4、xu,eta1.//ChineseJournalofRehabilitationMedi-cine,2013,28(12):1093-1096Abstractobjective:Toexploretheinfluenceofvibrationstimulationonnormalhumanslowerlimbsmajormusclesun—derdifferentlocalvibrationstimulationconditions.andtodeterminethebestvibrationfrequencyandlocationbysurfaceelectromyogram(s5、EMG)analysis.Method:Tennormalmalecollegestudents[age(23.0士1.7)years,height(173.5土4.5)cm,weight(70.4土8.2)kg]wereinvolvedinthisstudy.Allofthemwereinsquat(kneeflexion30。)position,acceptedthevibrationstim—ulationswith10—50HzfrequenciesandsEMGwerecollected.Leftrectusfemorisandsemitendinosus,leftant6、e—riortibialmuscleandthemedialheadofgastrocnemiuswereselectedfordetection.thevibrationstimulationpointwasonthesurfaceofdistalofleftanteriortibialmuscleandachillestendon,respectively.ThesEMGcharacteristicsunderdifferentvibrationstimulationsonlowerlimbsmajormuscleswereanalyzed.Result:Thecalfmusc7、leswereactivatedsignificantlYunderdifferentvibrationconditionsrP<0.05).ThesEMGvaluesofanteriortibialmuscleweresignificantlydifferentwithvibrationfrequencyincreasingr尸<0.05).How—ever,therewasnosignificantdiferenceamong30Hz.40Hzand50Hzont
3、电量增加,未对大腿肌肉产生显著影响。频率30—50Hz为正常人体小腿肌肉最佳的振动刺激频率。振动刺激作用在肌腱位置能有效引起肌肉兴奋,跟腱较胫前肌肌腱位置更易激活小腿肌肉肌群。关键词振动刺激;表面肌电;均方根振幅;频率;谐振中图分类号:R337,R244文献标识码:A文章编号:1001—1242(2013)一l2-1093—04Analysisofsurfaceelectromyogramoflowerlimbmusclesofnormalhumansunderdifferentvibrationconditions/ZHANGYuanyuan,PANHuaping,XUGuang
4、xu,eta1.//ChineseJournalofRehabilitationMedi-cine,2013,28(12):1093-1096Abstractobjective:Toexploretheinfluenceofvibrationstimulationonnormalhumanslowerlimbsmajormusclesun—derdifferentlocalvibrationstimulationconditions.andtodeterminethebestvibrationfrequencyandlocationbysurfaceelectromyogram(s
5、EMG)analysis.Method:Tennormalmalecollegestudents[age(23.0士1.7)years,height(173.5土4.5)cm,weight(70.4土8.2)kg]wereinvolvedinthisstudy.Allofthemwereinsquat(kneeflexion30。)position,acceptedthevibrationstim—ulationswith10—50HzfrequenciesandsEMGwerecollected.Leftrectusfemorisandsemitendinosus,leftant
6、e—riortibialmuscleandthemedialheadofgastrocnemiuswereselectedfordetection.thevibrationstimulationpointwasonthesurfaceofdistalofleftanteriortibialmuscleandachillestendon,respectively.ThesEMGcharacteristicsunderdifferentvibrationstimulationsonlowerlimbsmajormuscleswereanalyzed.Result:Thecalfmusc
7、leswereactivatedsignificantlYunderdifferentvibrationconditionsrP<0.05).ThesEMGvaluesofanteriortibialmuscleweresignificantlydifferentwithvibrationfrequencyincreasingr尸<0.05).How—ever,therewasnosignificantdiferenceamong30Hz.40Hzand50Hzont
此文档下载收益归作者所有