Electromyography, Innervation Zone, Wavelet, Isometric.
The purpose of this study was to examine the effects of monopolar electrode placement over the innervation zone (IZ) on both the amplitude and frequency contents of the surface electromyographic (EMG) signal. Ten men (mean ± SD age = 23.6 ± 3.0 years) volunteered to perform submaximal to maximal iso...
| Publicado en: | Clinical Kinesiology (Online Edition) pp. 39 - 47 |
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| Autores principales: | , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
American Kinesiotherapy Association
Summer2011
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=65556259&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 65556259 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 08969620 2QKM jtl: Clinical Kinesiology (Online Edition) issn: 08969620 maglogo: N pubinfo: dt: Summer2011 pid: 31106 pub: American Kinesiotherapy Association place: Hattiesburg, Mississippi artinfo: ui: 65556259 65556259 104688315 65556259 ppf: 39 ppct: 8 formats: fmt: @attributes: type: P tig: atl: Electromyography, Innervation Zone, Wavelet, Isometric. aug: au: Beck, Travis W. DeFreitas, Jason M. Stock, Matt S. affil: University of Oklahoma, Department of Health and Exercise Science, Norman, Oklahoma 73019 sug: subj: Electrodes Utilization Electromyography Methods Quadriceps Muscles Innervation Exercise Physiology Muscle Contraction Evaluation Human Male Young Adult Leg Physiology Extension Torque Evaluation Exercise Intensity Comparative Studies Body Weights and Measures Isometric Exercises Dynamometry Signal Transduction Paired T-Tests One-Way Analysis of Variance Repeated Measures Data Analysis Software Analysis of Variance Two-Way Analysis of Variance Post Hoc Analysis Muscle Strengthening Male ab: The purpose of this study was to examine the effects of monopolar electrode placement over the innervation zone (IZ) on both the amplitude and frequency contents of the surface electromyographic (EMG) signal. Ten men (mean ± SD age = 23.6 ± 3.0 years) volunteered to perform submaximal to maximal isometric muscle actions of the dominant leg extensors, and two separate monopolar EMG signals were detected from the vastus lateralis. One electrode was placed directly over the IZ, while the second electrode was between the IZ and distal tendon. All EMG signals were analyzed with a wavelet analysis designed specifically for EMG. The results showed that the total EMG intensity (which is analogous to power) in each wavelet band increased with torque, and the EMG signals from the electrode over the IZ had more total intensity in wavelet bands 2-4 (approximately 20-65 Hz) than the corresponding signals from the electrode distal to the IZ. It is possible that these differences in total EMG intensity were due to detection of non-propagating components that, although still present distal to the IZ, were not as strong as they were over the IZ. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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