Abstract
Noninvasive techniques, surface electromyography (sEMG) in particular, are being increasingly employed for assessing muscle activity. In these studies, local oxygen consumption and muscle metabolism are of great interest. Measurements can be performed noninvasively using optics-based methods such as near-infrared spectroscopy (NIRS). By combining energy consumption data provided by NIRS with muscle level activation data from sEMG, we may gain an insight into the metabolic and functional characteristics of muscle tissue. However, muscle motion may induce artifacts into EMG and NIRS. Thus, the inclusion of simultaneous motion measurements using accelerometers (ACMs) enhances possibilities to perceive the effects of motion on NIRS and EMG signals. This paper reviews the current state of noninvasive EMG and NIRS-based methods used to study muscle function. In addition, we built a combined sEMG/NIRS/ACM sensor to perform simultaneous measurements for static and dynamic exercises of a biceps brachii muscle. Further, we discuss the effect of muscle motion in response of NIRS and EMG when measured noninvasively. Based on our preliminary studies, both NIRS and EMG supply specific information on muscle activation, but their signal responses also showed similarities with acceleration signals which, in this case, were supposed to be solely sensitive to motions.
Highlights
Electromyography (EMG) is most commonly used in theeld of neurophysiology or electrodiagnostic medicine.[1]
The origin of the Surface EMG (sEMG) signal is the bio-electric activity of musclebers, which is due to ion channel activity
We present a multimodal sensor built for performing simultaneous measurements with sEMG, near-infrared spectroscopy (NIRS) and ACM
Summary
Electromyography (EMG) is most commonly used in theeld of neurophysiology or electrodiagnostic medicine.[1]. The origin of the sEMG signal is the bio-electric activity of musclebers, which is due to ion channel activity SEMG often requires some degree of skin preparation such as cleansing the skin of body oils with alcohol, inserting conductive paste or gel, and, in some cases, shaving body hair.[2,8,11] In some measurements, the outermost layer of the skin is abraded.[11]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
