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1.
表面肌电图是从肌肉表面通过电极引导,记录下来的神经肌肉系统活动的一维时间序列信号。肌肉运动时会有很小的生物电变化,表面肌电图的振幅、频谱指标均会发生相应变化。但是表面肌电图变化情况与测试方法的选择和运动方式密切相关。表面肌电图作为一种无创伤检测方法,在运动性肌肉疲劳研究中将发挥重要作用。 相似文献
2.
表面肌电信号的检测是一种无创电检测方法,它的检测分析对临床诊断及康复医学,运动医学等具有重要意义。肌肉疲劳产生过程中,肌电图的振幅和频谱指标均会产生相应变化,肌肉疲劳通常是指肌肉运动系统最大做功能力或最大收缩能力暂时下降。SEMG信号可以在一定程度上反映肌肉收缩功能的变化,在运动性肌肉疲劳研究中将发挥重要作用。 相似文献
3.
表面肌电的处理方法及在体育科研中应用前景 总被引：10，自引：0，他引：10
表面肌电信号的检测是一种无创电检测方法,它的检测分析对临床诊断及康复医学、运动医学等具有重要意义。肌电图学在体育科学研究上应用较晚,主要用于对肌肉力量和肌肉疲劳的诊断上,并逐步从基础理论研究转向为运动技术服务的实践研究。本文试图对表面肌电的信号分析方法及其在体育中应用前景作个回顾。 相似文献
4.
表面肌电信号的检测是一种无创电检测方法,它的检测分析对临床诊断及康复医学,运动医学等具有重要意义.肌肉疲劳产生过程中,肌电图的振幅和频谱指标均会产生相应变化,肌肉疲劳通常是指肌肉运动系统最大做功能力或最大收缩能力暂时下降.SEMG信号可以在一定程度上反映肌肉收缩功能的变化,在运动性肌肉疲劳研究中将发挥重要作用. 相似文献
5.
表面肌电的处理方法及在体育科研中的应用前景 总被引：16，自引：0，他引：16
表面肌电信号的检测是一种无创电检测方法，它的检验分析对临床诊断及康复医学、运动医学等具有重要意义。肌电图学在体育科学研究上应用较晚，主要用于对肌肉力量和肌肉疲劳的诊断上，并逐步从基础理论研究转向为运动技术服务的实践研究。对表面肌电的信号分析方法及其在体育中应用前景做一综述。 相似文献
6.
张佑磊 《体育科技文献通报》2011,19(12):145-147
表面肌电图也称动态肌电图和运动肌电图,是用表面电极采集肌肉活动产生的电活动的图形。目前,表面肌电图应用已经深入临床康复、运动医学、生物工程和体育等诸多领域。在运动生物力学研究中,表面肌电图主要用于肌肉力量评定、肌肉疲劳的诊断和神经肌肉功能的评价上,用于运动技术服务,指导运动训练,防止运动损伤。本文对表面肌电图在运动生物力学研究中的应用做一综述。 相似文献
7.
肌肉疲劳通常是指肌肉运动系统最大作功能力或者最大收缩能力的暂时下降,表面肌电图信号可以在一定程度上反映肌肉收缩功能的变化,其检测具有非损伤性、实际性、多靶点测量等优点.通过文献综述法简要总结了运动导致肌肉疲劳的表面肌电图特征,介绍了表面肌电图主要测量指标及其影响因素. 相似文献
8.
表面肌电图是从肌肉表面通过电极引导、记录下来的神经肌肉系统活动时的生物电信号。文章测定了山西省12名射箭运动员在日常训练时6块肌肉的肌电信号,并与国家队队员肌电信号进行对比分析和探索山西省射箭运动员技术特征。 相似文献
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《体育科技文献通报》2001,(5)
6804.2 20012361sEMG 信号分析及其应用研究进展=Some advancesin the research of sEMG signal analysis and itsapplication[刊,中,A]/王健∥体育科学.-2000.-20(4).-56-60 参 25(TY)肌电图∥肌肉收缩∥肌纤维∥分析∥肌肉∥神经表面肌电信号是从肌肉表面通过电极引导、记录下来的神经肌肉系统活动时的一维时间序列信号,其变化与参与活动的运动单位数量、运动单位活动模式和代谢状态等因素有关,能够实时地、准确地和在非损伤状态下反映肌肉活动状态和功能状态。本文拟就 sEMG 信号分析及其应用研究进展进行系统回顾。 相似文献
10.
表面肌电的信号分析及在体育科研中的应用 总被引：7，自引：0，他引：7
李卓 《体育科技文献通报》2006,14(3):31-33,30
表面肌电的信号检测是一种无创电检测方法,其信号的检测分析在临床诊断、康复医学及运动医学中具有重要意义。本文主要介绍了表面肌电信号的分析处理方法及其在国内外体育科研领域中的应用研究现状。 相似文献
11.
膝关节运动过程中的肌电、肌力和关节力矩动态变化一直是诸多学者研究的热点及难点。表面肌电与等速肌力测试技术的结合可以更加精确地反映各大关节主要肌群的肌力特征,因此,在人体智能辅助系统研发、膝关节损伤及康复研究等领域,得到了越来越多的研究和应用。文章从基于统计理论的膝关节肌力估算、基于肌肉模型的膝关节肌力估算、表面肌电和等速指标的变化特征研究、竞技体育中的应用研究、运动损伤及临床上的应用研究方面,对表面肌电及等速肌力测试技术同时应用在膝关节力电关系分析中的研究进展进行简述。 相似文献
12.
通过高速摄影、表面肌电图（sEMG）测量以及等速肌力测试等方法对12名体育专业男生进行研究，获取踝关节主要屈伸肌（胫骨前肌和腓肠肌）等速肌力与sEMG之间的关系，以此说明用sEMG来直接评价肌肉用力情况时需进行标准化的必要性及最佳标准化方式。结果表明：相同肌肉收缩过程中，肌力矩值与平均振幅（MA）的变化趋势呈现高度相关，相关系数r在0.6以上；不同收缩形式、不同收缩速度下，均方根振幅（RMS）、积分肌电（iEMG）值会随着收缩速度的增加而减小；跳深动作下肢肌肉sEMG标准化后的值与跳深腾起速度之间均有一定的相关性，标准化后以最大随意等长收缩（MVIC）的标准化值与跳深腾起速度的相关性最高。 相似文献
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14.
Róisín M. Howard Richard Conway Andrew J. Harrison 《Sports biomechanics / International Society of Biomechanics in Sports》2018,17(1):1-17
The use of electromyography (EMG) is widely recognised as a valuable tool for enhancing the understanding of performance drivers and potential injury risk in sprinting. The timings of muscle activations relative to running gait cycle phases and the technology used to obtain muscle activation data during sprinting are of particular interest to scientists and coaches. This review examined the main muscles being analysed by surface EMG (sEMG), their activations and timing, and the technologies used to gather sEMG during sprinting. Electronic databases were searched using ‘Electromyography’ OR ‘EMG’ AND ‘running’ OR ‘sprinting’. Based on inclusion criteria, 18 articles were selected for review. While sEMG is widely used in biomechanics, relatively few studies have used sEMG in sprinting due to system constraints. The results demonstrated a focus on the leg muscles, with over 70% of the muscles analysed in the upper leg. This is consistent with the use of tethered and data logging EMG systems and many sprints being performed on treadmills. Through the recent advances in wireless EMG technology, an increase in the studies on high velocity movements such as sprinting is expected and this should allow practitioners to perform the analysis in an ecologically valid environment. 相似文献
15.
Rodrigo Rico Bini Camila Peter Hoefelmann Vitor Pereira Costa Fernando Diefenthaeler 《Journal of sports sciences》2018,36(5):485-491
Reproducibility of frequency content from surface electromyography (sEMG) signals has not been assessed and it is unknown if incremental load testing design could affect sEMG in cycling. The goals of this study were to assess the reproducibility of measures from sEMG frequency content between sessions and to compare these frequency components between a ramp and a step incremental cycling test. Eighteen cyclists performed four incremental load cycling tests to exhaustion. Two tests were performed using a step increment (load started at 100 W for 3 min followed by increments of 30 W every 3 min) and two were performed using a ramp increment (load started at 100 W for 1 min followed by increments of 30 W·min?1). sEMG was monitored bilaterally for the rectus femoris and vastus lateralis throughout the tests and converted into overall activation (whole signal bandwidth), high- and low-frequency contents. The reproducibility of the frequency content ranged from none to strong (ICC = 0.07–0.90). Vastus lateralis activation was larger at the step compared to the ramp test (P < 0.01), without differences for rectus femoris (P = 0.22–0.91) and for the high-frequency (P = 0.28–0.95) and low-frequency contents (P = 0.13–0.94). sEMG from vastus lateralis and rectus femoris presented none to strong reproducibility. Vastus lateralis is more activated in step test design. 相似文献
16.
BackgroundMuscular strength can be conceptually determined by two components: muscle activation and size. Muscle activation by the central nervous system can be measured by surface electromyography (sEMG). Muscular size reflects the amount of contractile protein within a skeletal muscle and can be estimated by anthropometric measurements. The purpose of this study was to determine the relative contributions of size parameters and muscle activation to the prediction of maximal voluntary isometric elbow flexion strength.MethodsA series of anthropometric measurements were taken from 96 participants. Torque and root-mean-square (RMS) of the sEMG from the biceps brachii were averaged across three maximal voluntary isometric contractions. A multiple linear regression analysis was performed based on a Pearson's correlation matrix.ResultsBody weight (BW) accounted for 39.1% and 27.3% in males and females, respectively, and was the strongest predictor of strength for males. Forearm length (L3) was the strongest predictor of strength in females (partial R2 = 0.391). Elbow circumference (ELB) accounted for a significant (p < 0.05) amount of variance in males but not females. The addition of sEMG RMS as a third variable accounted for an average of 10.1% of the variance excluding the equation of BW and L3 in females. The strongest prediction equation included BW, L3, and ELB accounting for 55.6% and 58.5% of the variance in males and females, respectively.ConclusionAnthropometrics provide a strong prediction equation for the estimation of isometric elbow flexion strength. Muscle activation, as measured by sEMG activity, accounted for a significant (p < 0.05) amount of variance in most prediction equations, however, its contribution was comparable to an additional anthropometric variable. 相似文献
17.
sEMG信号分析及其应用研究进展 总被引：83，自引：7，他引：76
表面肌电信号是从肌肉表面通过电极引导,记录下来的神经肌肉系统活动时的一维时间序列信号,其变化与参与活动的运动单位数量,运动单位活动模式和代谢状态等因素有关,能够实时地,准确地和在非损伤状态下反映肌肉活动状态和功能状态。本文拟就ｓＥＭＧ信号分析及其应用研究进展进行系统回顾。 相似文献
18.
This investigation examined effects of two exercise modes (barbell, BB; bodyweight suspension, BWS) on muscle activation, resistance load, and fatigue. During session one, nine resistance-trained males completed an elbow flexion one-repetition maximum (1RM). During sessions two and three, subjects completed standing biceps curls to fatigue at 70% 1RM utilizing a randomized exercise mode. Surface electromyography (sEMG) recorded muscle activation of the biceps brachii, triceps brachii, anterior deltoid, posterior deltoid, rectus abdominis, and erector spinae. BWS resistance load was measured using a force transducer. Standing maximal voluntary isometric contractions of the elbow flexors recorded at 90° were used to determine the isometric force decrement and rate of fatigue (ROF) during exercise. sEMG and resistance load data were divided into 25% contraction duration bins throughout the concentric phase. BWS resulted in a 67.7?±?7.4% decline in resistance load throughout the concentric phase (p?≤?0.05). As a result, BB elicited higher mean resistance loads (31.4?±?4.0?kg) and biceps brachii sEMG (84.7?±?27.8% maximal voluntary isometric contractions, MVIC) compared with BWS (20.4?±?3.4?kg, 63.4?±?21.6% MVIC). No difference in rectus abdominis or erector spinae sEMG was detected between exercise modes. Isometric force decrement was greater during BWS (?21.7?±?7.0?kg) compared with BB (?14.9?±?4.7?kg); however, BB (?3.0?±?0.8?kg/set) resulted in a steeper decline in ROF compared with BWS (?1.7?±?0.6?kg/set). The variable resistance loading and greater isometric force decrement observed suggest that select BWS exercises may resemble variable resistance exercise more than previously considered. 相似文献
19.
This study compared the muscular activation of the pectoralis major, anterior deltoid and triceps brachii during a free-weight barbell bench press performed at 0°, 30°, 45° and –15° bench angles. Fourteen healthy resistance trained males (age 21.4 ± 0.4 years) participated in this study. One set of six repetitions for each bench press conditions at 65% one repetition maximum were performed. Surface electromyography (sEMG) was utilised to examine the muscular activation of the selected muscles during the eccentric and concentric phases. In addition, each phase was subdivided into 25% contraction durations, resulting in four separate time points for comparison between bench conditions. The sEMG of upper pectoralis displayed no difference during any of the bench conditions when examining the complete concentric contraction, however differences during 26–50% contraction duration were found for both the 30° [122.5 ± 10.1% maximal voluntary isometric contraction (MVIC)] and 45° (124 ± 9.1% MVIC) bench condition, resulting in greater sEMG compared to horizontal (98.2 ± 5.4% MVIC) and –15 (96.1 ± 5.5% MVIC). The sEMG of lower pectoralis was greater during –15° (100.4 ± 5.7% MVIC), 30° (86.6 ± 4.8% MVIC) and horizontal (100.1 ± 5.2% MVIC) bench conditions compared to the 45° (71.9 ± 4.5% MVIC) for the whole concentric contraction. The results of this study support the use of a horizontal bench to achieve muscular activation of both the upper and lower heads of the pectoralis. However, a bench incline angle of 30° or 45° resulted in greater muscular activation during certain time points, suggesting that it is important to consider how muscular activation is affected at various time points when selecting bench press exercises. 相似文献
20.
表面肌电信号分析及其应用研究 总被引：46，自引：2，他引：44
表面肌电信号是皮肤表面记录下来的神经肌肉系统活动时的生物电信号 ,其时频特征及非线性动力学特征对该系统活动水平和状态有敏感依赖性 ,故可作为神经肌肉功能评价的有效方法。本文着重就肌电信号的分析方法及其应用现状进行简要回顾并分析探讨。 相似文献