Mechanomyographic Amplitude and Mean Power Frequency Versus Isometric Force Relationships Detected In Two Axes.
The purpose of this study was to use laser displacement sensors to investigate the mechanomyographic (MMG) amplitude and mean power frequency (MPF) versus isometric force relationships detected for the rectus femoris in perpendicular and transverse axes. Ten healthy men (mean ± SD age = 22.1 ± 1.6 y...
| Publicado en: | Clinical Kinesiology (Online Edition) pp. 47 - 57 |
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| Autores principales: | , , , |
| Formato: | pictorial questionnaire/scale research tables/charts Journal Article |
| Publicado: |
American Kinesiotherapy Association
Fall2011
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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=65556244&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 65556244 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 08969620 2QKM jtl: Clinical Kinesiology (Online Edition) issn: 08969620 maglogo: N pubinfo: dt: Fall2011 pid: 31106 pub: American Kinesiotherapy Association place: Hattiesburg, Mississippi artinfo: ui: 65556244 65556244 104688316 65556244 ppf: 47 ppct: 10 formats: fmt: @attributes: type: P tig: atl: Mechanomyographic Amplitude and Mean Power Frequency Versus Isometric Force Relationships Detected In Two Axes. aug: au: Dillon, Michael A. Beck, Travis W. DeFreitas, Jason M. Stock, Matt S. affil: Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma sug: subj: Rectus Femoris Muscles Physiology Muscle Contraction Evaluation Lasers Utilization Electromyography Methods Exercise Intensity Evaluation Isometric Contraction Physiology Exercise Physiology Human Male Young Adult Female Leg Physiology Extension Comparative Studies Biophysiological Methods Signal Transduction Two-Way Analysis of Variance Repeated Measures One-Way Analysis of Variance Post Hoc Analysis Descriptive Statistics Questionnaires Male Female ab: The purpose of this study was to use laser displacement sensors to investigate the mechanomyographic (MMG) amplitude and mean power frequency (MPF) versus isometric force relationships detected for the rectus femoris in perpendicular and transverse axes. Ten healthy men (mean ± SD age = 22.1 ± 1.6 yrs) and ten healthy women (age = 24.4 ± 2.8 yrs) performed sub-maximal to maximal isometric contractions of the dominant leg extensors. Two separate MMG signals were detected with laser displacement sensors. One MMG sensor was oriented in an axis that was perpendicular (PERP) to the muscle surface, and the second sensor was aligned transverse (TRAN) to the surface. The results indicated that MMG amplitude and MPF increased with isometric force in a similar pattern for the PERP and TRAN laser heads. The marginal mean (collapsed across force levels) MMG amplitude values were greatest for the TRAN laser head, while the PERP laser head showed the largest MPF values. Thus, these findings indicate that the measurement axis is important in determining absolute MMG amplitude and MPF values, but does not affect their patterns of response across isometric force. pubtype: Academic Journal doctype: pictorial questionnaire/scale research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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