本文選題：表面肌電圖 + 等速肌力��； 參考：《西安體育學(xué)院》2017年碩士論文

【摘要】：目的:等速肌力測(cè)試、表面肌電圖(sEMG)技術(shù)在康復(fù)保健、運(yùn)動(dòng)訓(xùn)練、體育科研以及醫(yī)學(xué)領(lǐng)域中都有著重要的作用。本研究旨在獲取下肢膝、踝關(guān)節(jié)各一組主要屈伸肌(包括腓腸肌和脛骨前肌、股直肌和股二頭肌)等速肌力與sEMG之間的關(guān)系,以此來(lái)說(shuō)明用sEMG來(lái)直接評(píng)價(jià)肌肉用力情況時(shí)需進(jìn)行標(biāo)準(zhǔn)化的必要性;同時(shí)通過(guò)標(biāo)準(zhǔn)化前后不同人同一肌肉或同一人不同肌肉之間sEMG參數(shù)值的比較來(lái)確定靜力性和動(dòng)力性哪種運(yùn)動(dòng)方式作為標(biāo)準(zhǔn)化值來(lái)評(píng)價(jià)肌肉用力情況更有效。方法:本研究運(yùn)用高速攝影,表面肌電圖測(cè)量以及等速肌力測(cè)試等方法對(duì)西安體育學(xué)院12名體育系男生進(jìn)行研究,獲得右側(cè)下肢膝、踝關(guān)節(jié)屈伸肌四塊肌肉(腓腸肌外側(cè)、脛骨前肌、股直肌、股二頭肌)在不同收縮方式(最大隨意等長(zhǎng)收縮(MVIC))及不同收縮速度(60°/s、180°/s)下的表面肌電圖及肌力矩值的結(jié)果以及跳深動(dòng)作的sEMG值。結(jié)果:(1)相同肌肉收縮過(guò)程中,肌力矩值與MA(平均振幅)的變化趨勢(shì)呈現(xiàn)高度相關(guān),相關(guān)系數(shù)r在0.6以上。(2)不同收縮形式、不同收縮速度下,肌肉峰力矩值隨著收縮速度的增加而減小,踝關(guān)節(jié)的屈伸肌在等速60°/s、180°/s向心收縮中,肌峰力矩值與MVIC肌峰力矩值之間存在非常顯著的差異(P0.01、P0.01);膝關(guān)節(jié)的屈伸肌在等速60°/s、180°/s向心收縮中,肌峰力矩值與MVIC肌峰力矩值之間也存在顯著性差異(P0.05、P0.05)。此外,踝、膝關(guān)節(jié)屈伸肌的峰力矩比差異性顯著(P0.01、P0.05)。(3)不同收縮形式、不同收縮速度下,RMS(均方根振幅)、i EMG(積分肌電)值會(huì)隨著收縮速度的增加而減小,踝關(guān)節(jié)屈伸肌在等速60°/s、180°/s的向心收縮中,RMS與MVIC的RMS值相比有顯著性差異(P0.01、P0.01;P0.05、P0.01),踝關(guān)節(jié)屈伸肌在等速60°/s、180°/s向心收縮下,iEMG與MVIC的iEMG值相比均有非常顯著性差異(P0.01);膝關(guān)節(jié)屈伸肌等速60°/s、180°/s向心收縮RMS、iEMG與MVIC相比也均有非常顯著性差異(P0.01)。在相同收縮方式下,踝關(guān)節(jié)的屈伸肌對(duì)比中,伸肌的RMS、iEMG值均小于屈肌且P0.01差異性非常顯著。而膝關(guān)節(jié)的屈伸肌對(duì)比中,最大等長(zhǎng)隨意收縮中伸肌的RMS小于屈肌的RMS值,P0.05差異顯著,等速60°/s向心收縮、180°/s向心收縮的RMS值大于屈肌的RMS值,P0.05差異顯著;最大等長(zhǎng)隨意收縮和等速180°/s向心收縮的iEMG值大于屈肌的iEMG P0.05差異顯著,而等速60°/s向心收縮的IEMG值小于屈肌的IEMG P0.05差異顯著。(4)跳深動(dòng)作下肢肌肉sEMG標(biāo)準(zhǔn)化前后出現(xiàn)明顯變化,踝關(guān)節(jié)屈伸肌RMS、iEMG值標(biāo)準(zhǔn)化后,以等速60°/s向心收縮為標(biāo)準(zhǔn)的標(biāo)準(zhǔn)化值與以MVIC為標(biāo)準(zhǔn)化的標(biāo)準(zhǔn)化值之間無(wú)顯著性差異(P0.05),而以等速180°/s為標(biāo)準(zhǔn)的標(biāo)準(zhǔn)化值與以MVIC為標(biāo)準(zhǔn)化的標(biāo)準(zhǔn)化值之間差異性非常顯著(P0.01);膝關(guān)節(jié)屈伸肌RMS、iEMG值標(biāo)準(zhǔn)化后,以等速60°/s和180°/s向心收縮為標(biāo)準(zhǔn)的標(biāo)準(zhǔn)化值與以MVIC為標(biāo)準(zhǔn)化的標(biāo)準(zhǔn)化值之間均存在非常顯著的差異(P0.01).(5)跳深動(dòng)作下肢肌肉sEMG標(biāo)準(zhǔn)化后的值與跳深騰起速度之間均有一定的相關(guān)性,標(biāo)準(zhǔn)化后以最大隨意等長(zhǎng)收縮的標(biāo)準(zhǔn)化值與跳深騰起速度的相關(guān)性最高,以等速60°/s和180°/s向心收縮的標(biāo)準(zhǔn)化值與騰起速度有一定的相關(guān)性,但相關(guān)程度不高,尤其是以180°/s向心收縮的標(biāo)準(zhǔn)化值會(huì)出現(xiàn)不相關(guān)的現(xiàn)象。結(jié)論:(1)不同收縮形式不同收縮速度下,肌肉在最大用力的情況下,肌力矩值與sEMG值的變化趨勢(shì)呈高度正相關(guān):肌肉收縮過(guò)程中肌力矩值與MA變化趨勢(shì)一致;最大隨意等長(zhǎng)收縮下的肌峰力矩值、RMS及iEMG值最大,等速向心運(yùn)動(dòng)中肌峰力矩值、RMS及i EMG值均隨收縮速度的增大而減小。(2)屈伸肌對(duì)比中,踝、膝關(guān)節(jié)的伸肌峰力矩值均大于屈肌,膝關(guān)節(jié)伸肌的RMS、iEMG值均大于屈肌,與峰力矩特征一致,而踝關(guān)節(jié)伸肌的RMS、iEMG值均小于屈肌,與峰力矩值特征相反。表明由于表面肌電信號(hào)采集過(guò)程中受到眾多因素的干擾,若要實(shí)現(xiàn)肌肉之間sEMG的比較必須進(jìn)行sEMG測(cè)量的標(biāo)準(zhǔn)化處理。(3)跳深動(dòng)作下肢肌肉標(biāo)準(zhǔn)化前后的sEMG值比較情況發(fā)生了明顯的變化,以最大隨意等長(zhǎng)收縮為標(biāo)準(zhǔn)的sEMG標(biāo)準(zhǔn)化值與跳深騰起速度的相關(guān)性最高,因此要進(jìn)行不同人同一肌肉或同一人不同肌肉之間sEMG的比較以最大隨意等長(zhǎng)收縮作為標(biāo)準(zhǔn)最為合理。
[Abstract]:Objective: the isokinetic muscle strength test, surface electromyography (sEMG) technique plays an important role in rehabilitation health, exercise training, sports scientific research and medical field. The aim of this study is to obtain the relationship between the isokinetic muscle strength of the main extensor muscles of the knee and ankle joint (including the gastrocnemius and the anterior tibial muscle, the rectus femoris and the two head of the femoral head) and the relationship between the muscle force and the sEMG. This is to illustrate the necessity of using sEMG to directly evaluate the muscle force. At the same time, it is more effective to determine which type of static and dynamic mode of motion is more effective as a standardized value to evaluate the muscle force by comparing the sEMG parameters between the same muscles and the same muscles before and after standardization. 12 male students in Xi'an Physical Education University were studied by high speed photography, surface electromyography and isokinetic muscle strength test, and four muscles of the right leg knee and ankle flexor muscle (lateral of the gastrocnemius, the anterior tibial muscle, the rectus femoris, and the two head of the femoris) were obtained in the different contractions (the maximum random isometric contraction (MVIC)) and not in the right lower extremities. The results of surface electromyography and muscle torque at the same contraction velocity (60 /s, 180 /s) and the sEMG value of deep jumping action. Results: (1) during the same muscle contraction, the strength of muscle torque is highly correlated with the change trend of MA (average amplitude), and the correlation coefficient r is above 0.6. (2) different contraction forms, different contraction velocities, muscle peak torque values There was a very significant difference between the flexor and extension muscles of the ankle joint in 60 /s and 180 /s to the heart (P0.01, P0.01) in the contraction of the ankle joint. The flexor and extensor of the knee joint was also significant between the constant velocity of 60 degree /s, 180 degree /s to the heart and the peak torque value of the muscle peak and the peak torque of MVIC muscle. The difference (P0.05, P0.05). In addition, the peak torque ratio of the ankle and knee flexors is significant (P0.01, P0.05). (3) different contraction forms, RMS (root mean square amplitude), I EMG (integral EMG) decreases with the increase of contraction velocity at different contraction velocities, and the flexor and extension muscles of the ankle joint are in the concentric contraction of the isokinetic 60 degree /s, 180 degrees /s, RMS and MVIC RMS values. Compared with the significant difference (P0.01, P0.01; P0.05, P0.01), the flexor and extensor muscles of the ankle joint had a very significant difference between the iEMG values of iEMG and MVIC (P0.01) under the isokinetic 60 degree /s and 180 degree /s to the heart (P0.01); the extensor of the knee joint was 60 degree /s, and the 180 degree /s was contractile to the heart. In the contrast of flexor and extensor muscles of the ankle joint, the RMS and iEMG values of the extensors were less than the flexor muscles and the P0.01 difference was very significant. In the contrast of the flexor muscles of the knee joint, the RMS of the extensor in the maximum isometric contraction was less than the RMS of the flexor muscle, the P0.05 difference was significant, the isokinetic 60 degree /s was contractive, and the RMS value of the 180 degree /s centripetal contraction was greater than the RMS value of the flexor muscle and P0.05 difference. The iEMG value of the maximum isometric contraction and the isokinetic 180 /s centripetal contraction was significantly higher than the iEMG P0.05 of the flexor muscle, but the IEMG value of the contraction of the center of the heart was less than the IEMG P0.05 of the flexor muscle. (4) there was a significant change in the lower extremity muscle before and after the standardization of the lower limb muscles, and the RMS of the flexor and extensor muscles of the ankle joint was standardized by 6. There was no significant difference between the standard values of 0 /s centripetal contraction and the standardized values of MVIC (P0.05), while the standard values of the isokinetic 180 degree /s and the standardized values of the MVIC were very significant (P0.01); the RMS and iEMG values of the knee flexors, RMS, iEMG, and the isovelocity of 60 degrees /s and 180 degrees /s were centripetal. There is a very significant difference between the standardized values of contraction and the standardized values of MVIC (P0.01). (5) there is a certain correlation between the normalized value of the lower limb muscle of the lower limb muscles and the jumping speed of the deep jump, and the correlation between the standardized value of the maximum random isometric contraction and the correlation of the jumping speed after the standardization of the deep jumping of the lower limb muscles of the lower limb muscles. The standard value of centripetal contraction with isokinetic 60 /s and 180 degree /s has a certain correlation with the rising speed, but the correlation degree is not high, especially the normalized value of the centripetal contraction at 180 /s. Conclusion: (1) the muscle moment and sEMG value under the maximum exertion of different contraction forms at different contraction forms The change trend showed a high positive correlation: muscle torque was consistent with the MA trend during muscle contraction; maximum torque value of muscle peak under maximum random isometric contraction, RMS and iEMG value, muscle peak torque in the isokinetic concentric movement, RMS and I EMG values decreased with the increase of contraction velocity. (2) the peak torque of ankle and knee joint in flexor and extensor muscle contrast The RMS and iEMG values of the extensor of the knee joint are all larger than the flexors, which are the same as the peak torque characteristics, while the RMS and iEMG values of the ankle extensor are all smaller than the flexors, which are opposite to the peak torque values. It shows that the sEMG measurement for the comparison of the sEMG between the muscles must be carried out because of the interference of many factors during the collection process of the surface myoelectric signal. 3. (3) the comparison of the lower limb muscles before and after the standardization of the lower limb muscles has changed obviously. The correlation between the sEMG standardization value of the maximum random isometric contraction and the jumping speed is the highest, so the comparison of sEMG between the different muscles of the same person or the different muscles of the same person is the most arbitrary. Equal length contraction is the most reasonable standard.

【學(xué)位授予單位】：西安體育學(xué)院
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：G804.6

【相似文獻(xiàn)】

相關(guān)期刊論文 前5條

1 呂新穎;汪東明;劉迎春;;吼聲發(fā)力的實(shí)驗(yàn)研究[J];阜陽(yáng)師范學(xué)院學(xué)報(bào)(自然科學(xué)版);2006年03期

2 呂新穎;;“以聲催力”的實(shí)驗(yàn)研究[J];北京體育大學(xué)學(xué)報(bào);2007年03期

3 曹峰銳;;不同測(cè)試方法對(duì)肩關(guān)節(jié)旋轉(zhuǎn)肌力及重測(cè)信度的影響[J];中國(guó)體育科技;2014年02期

4 劉世敏,張躍,趙君軍;廣東省優(yōu)秀短跑、跨欄、三級(jí)跳運(yùn)動(dòng)員髖關(guān)節(jié)肌肉力量的等速測(cè)試研究[J];成都體育學(xué)院學(xué)報(bào);2001年01期

5 楊建偉;馬楚虹;尤廷明;錢(qián)永東;戴燕;;攀巖運(yùn)動(dòng)員正反握法下肘關(guān)節(jié)等速肌力及峰力矩角度研究[J];軍事體育進(jìn)修學(xué)院學(xué)報(bào);2011年04期

相關(guān)會(huì)議論文 前1條

1 盧德明;王向東;林明芳;方興;;膝屈伸肌不同起止角等速向心與離心收縮峰力矩的研究[A];第十屆全國(guó)運(yùn)動(dòng)生物力學(xué)學(xué)術(shù)交流大會(huì)論文匯編[C];2002年

相關(guān)博士學(xué)位論文 前1條

1 郭黎;優(yōu)秀擊劍運(yùn)動(dòng)員肌力特點(diǎn)、有氧、無(wú)氧能力及賽前機(jī)能狀態(tài)研究[D];上海體育學(xué)院;2009年

相關(guān)碩士學(xué)位論文 前2條

1 郭東雪;下肢膝、踝關(guān)節(jié)屈伸肌群sEMG測(cè)量的標(biāo)準(zhǔn)化研究[D];西安體育學(xué)院;2017年

2 汪東明;肌力鍛煉對(duì)髕骨勞損患者的療效評(píng)價(jià)[D];北京體育大學(xué);2008年

，

本文編號(hào)：1813698