Traces of muscular fatigue in the rectus femoris identified with surface electromyography and wavelets on normal gait.
Background: Although the median frequency is used as a basis to assess the presence of muscular fatigue, some studies have found that it is not a good estimator for this purpose. Physiotherapists often deal with patients with movement issues related to fatigue. A new objective estimator that is easy...
| Publicado en: | Physiotherapy Theory & Practice Vol. 38; no. 1; pp. 211 - 226 |
|---|---|
| Autores principales: | , , |
| Formato: | equations & formulas research tables/charts Journal Article |
| Publicado: |
Taylor & Francis Ltd
Jan 2022
|
| 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=154545276&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 154545276 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 09593985 BCJ jtl: Physiotherapy Theory & Practice issn: 09593985 maglogo: Y pubinfo: dt: Jan 2022 vid: 38 iid: 1 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 154545276 145613120 154545276 154545276 10.1080/09593985.2020.1725945 154545276 ppf: 211 ppct: 15 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Traces of muscular fatigue in the rectus femoris identified with surface electromyography and wavelets on normal gait. aug: au: Fidalgo-Herrera, Alberto Miangolarra-Page, Juan Carratalá-Tejada, Maria affil: Laboratorio de Análisis del Movimiento, Biomecánica, Ergonomía y Control Motor (LAMBECOM), Universidad Rey Juan Carlos, Alcorcón, Spain sug: subj: Muscle Fatigue Rectus Femoris Muscles Electromyography Human Convenience Sample Gait Protocols Leg Physiology Descriptive Statistics Pretest-Posttest Design Analysis of Variance Adolescence Young Adult Adult Adolescent: 13-18 years Adult: 19-44 years ab: Background: Although the median frequency is used as a basis to assess the presence of muscular fatigue, some studies have found that it is not a good estimator for this purpose. Physiotherapists often deal with patients with movement issues related to fatigue. A new objective estimator that is easy to obtain and interpret can help with the management of such patients. Objective and Purpose: The aim of this study was to identify the frequency bands most affected by fatigue and propose a protocol to obtain such information. Methods: Thirty healthy subjects (age 22.05 ± 2.42 years, height 1.71 ± 0.08 m, and weight 68.75 ± 11.42 kg) were recruited to measure the rectus femoris electromyography (EMG) of both legs during gait, before and after a fatiguing protocol. Four frequency bands were studied: high frequency (107–250 Hz), midfrequency (65–94 Hz), 40 Hz (34–53 Hz), and low frequency (< 25 Hz). Each frequency band is related to different aspects of the muscular contraction. Results: The main finding is that the ratios of the 40-Hz frequency and low-frequency bands showed significant differences in both legs between pre-fatigue and post-fatigue recordings. Critical thresholds F* 4.86 and 4.93 were exceeded at 4.5–8.7%, 30.64–46%.38, 63.75–66.8%, and 83.69–90.79% and at 0–2.53%, 4.7–15.21%, 18.15–54.65%, and 55.81–99.95% of the gait cycle, respectively, with p values <.05. Conclusions: The low-frequency band constitutes the best indicator to assess fatigue in gait. pubtype: Academic Journal doctype: equations & formulas research tables/charts Journal Article ougenre: Unknown language: English refInfo: holdings: @attributes: islocal: N |
|---|