This tutorial intends to provide insight, instructions and "best practices" for those who are novices-including clinicians, engineers and non-engineers-in extracting electromyogram (EMG) amplitude from the bipolar surface EMG (sEMG) signal of voluntary contractions. A brief discussion of sEMG amplitude extraction from high density sEMG (HDsEMG) arrays and feature extraction from electrically elicited contractions is also provided. This tutorial attempts to present its main concepts in a straightforward manner that is accessible to novices in the field not possessing a wide range of technical background (if any) in this area. Surface EMG amplitude, also referred to as the sEMG envelope [often implemented as root mean square (RMS) sEMG or average rectified value (ARV) sEMG], quantifies the voltage variation of the sEMG signal and is grossly related to the overall neural excitation of the muscle and to peripheral parameters. The tutorial briefly reviews the physiological origin of the voluntary sEMG signal and sEMG recording, including electrode configurations, sEMG signal transduction, electronic conditioning and conversion by an analog-to-digital converter. These topics have been covered in greater detail in prior tutorials in this series. In depth descriptions of state-of-the-art methods for computing sEMG amplitude are then provided, including guidance on signal pre-conditioning, absolute value vs. square-law detection, selection of appropriate sEMG amplitude smoothing filters and attenuation of measurement noise. The tutorial provides a detailed list of best practices for sEMG amplitude estimation.

Edward A. Clancy

Evelyn L. Morin

Gelareh Hajian

Roberto Merletti

Journal of Electromyography and Kinesiology

JOURNAL OF ELECTROMYOGRAPHY & KINESIOLOGY 是优秀原创文章的主要来源，这些文章研究人类运动从通过其运动单位和感觉系统的肌肉收缩到通过机械和电气检测技术的综合运动。作为国际电生理学会的官方出版物和KINESIOLOGY，该杂志致力于发表肌电图和运动机能学所有领域的最佳著作，包括：运动控制、肌肉疲劳、肌肉和神经特性、关节生物力学和电刺激。欢迎在康复、运动和锻炼、运动分析、人体工程学、替代和补充医学、人体性能测量和肌电信号处理技术文章中的应用。

The Journal of Electromyography and Kinesiology is a leading source of original research articles that explore various aspects of human movement, from muscle contractions through motor units and sensory systems to integrated movements detected by mechanical and electrical technologies. As the official publication of the International Society of Electrophysiology and Kinesiology, the journal is dedicated to publishing the best works in all areas of electromyography and kinesiology, including topics such as motor control, muscle fatigue, muscle and nerve properties, joint biomechanics, and electrical stimulation. We welcome applied research articles in the fields of rehabilitation, exercise and training, motion analysis, ergonomics, alternative and complementary medicine, human performance measurement, and electromyographic signal processing techniques.

《Journal of Electromyography and Kinesiology》是优秀原创研究文章的主要来源，专注于人类运动的各个方面，涵盖从运动单位和感觉系统的肌肉收缩到机械和电气检测技术的综合运动。作为国际电生理学会和运动机能学的官方出版物，该杂志致力于发表肌电图和运动机能学领域的最佳研究，包括运动控制、肌肉疲劳、肌肉和神经特性、关节生物力学和电刺激等主题。我们欢迎在康复、运动与锻炼、运动分析、人体工程学、替代和补充医学、人体性能测量以及肌电信号处理技术等领域的应用研究文章。

Category	Quartile
医学	4
医学, 生理学	3
医学, 康复医学	3
医学, 神经科学	4
医学, 运动科学	4

Tutorial. Surface electromyogram (sEMG) amplitude estimation: Best practices

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Journal Info

Category	Quartile
SPORT SCIENCES	2