Traces of muscular fatigue in the rectus femoris identified with surface electromyography and wavelets on normal gait

Fidalgo-Herrera, Alberto J.; Miangolarra‐Page, Juan Carlos; Carratalá-Tejada, María

doi:10.1080/09593985.2020.1725945

Cited by 5 publications

(6 citation statements)

References 46 publications

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“…Regarding acute fatigue, we showed poorer congruence between the last and the first 0.5 s intervals than between the second and first 0.5 s intervals, indicating a clear shift in the predominant frequency of all measured muscles around wavelet W10 with a center frequency fc 62 Hz over the course of the trial. Specifically, the results showed a shift toward a lower predominant frequency as hypothesized, which has been described previously as a typical sign of muscular fatigue [7,13,14]. A second sign of acute fatigue occurred toward the end of the five-second trial, which is muscular activation within a narrow frequency bandwidth in most muscles.…”

Section: Discussionsupporting

confidence: 77%

“…The synchronization bandwidth in this study was similar to that measured during an isometric contraction of m. abductor pollicis brevis by Barandun et al [ 11 ] but different from that observed for gait [ 7 ] or running [ 15 ]. Thus, the fatigue-related synchronization band is likely to be related to the task performed, muscle properties such as fiber-type composition [ 6 ], and the ability to synchronize the muscle [ 4 ].…”

Section: Discussionsupporting

confidence: 76%

“…This was visible in the MMIP as highly intense muscular events within a narrow band centered on wavelet 10 with a center frequency of 62 Hz. This effect has been described to indicate the synchronization of the motor units [ 7 , 11 , 15 ].…”

Section: Discussionmentioning

confidence: 99%

“…electromyogram (EMG) [3,4]. In addition, the frequency spectra contain information about muscular activation patterns [5], fiber-type composition [6], and level of fatigue [7]. Although overall body position remains more or less static during hold elements, the unstable rings require constant adjustment of muscle activation, often in short intense bursts, in order to correct body position.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, the influence of eccentric training showed some changes in muscle properties, such as fiber composition [ 2 ], which were detectable in the frequency spectra of the electromyogram (EMG) [ 3 , 4 ]. In addition, the frequency spectra contain information about muscular activation patterns [ 5 ], fiber-type composition [ 6 ], and level of fatigue [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Frequency Shifts in Muscle Activation during Static Strength Elements on the Rings before and after an Eccentric Training Intervention in Male Gymnasts

Göpfert

Schärer

Tacchelli

et al. 2022

JFMK

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During ring performance in men’s gymnastics, static strength elements require a high level of maximal muscular strength. The aim of the study was to analyze the effect of a four-week eccentric–isokinetic training intervention in the frequency spectra of the wavelet-transformed electromyogram (EMG) during the two static strength elements, the swallow and support scale, in different time intervals during the performance. The gymnasts performed an instrumented movement analysis on the rings, once before the intervention and twice after. For both elements, the results showed a lower congruence in the correlation of the frequency spectra between the first and the last 0.5 s interval than between the first and second 0.5 s intervals, which was indicated by a shift toward the predominant frequency around the wavelet with a center frequency of 62 Hz (Wavelet W10). Furthermore, in both elements, there was a significant increase in the congruence of the frequency spectra after the intervention between the first and second 0.5 s intervals, but not between the first and last ones. In conclusion, the EMG wavelet spectra presented changes corresponding to the performance gain with the eccentric training intervention, and showed the frequency shift toward a predominant frequency due to acute muscular fatigue.

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Section: Discussionsupporting

confidence: 77%

Section: Discussionsupporting

confidence: 76%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Frequency Shifts in Muscle Activation during Static Strength Elements on the Rings before and after an Eccentric Training Intervention in Male Gymnasts

Göpfert

Schärer

Tacchelli

et al. 2022

JFMK

View full text Add to dashboard Cite

show abstract

Electromyographic traces of motor unit synchronization of fatigued lower limb muscles during gait

Fidalgo-Herrera

Miangolarra‐Page

Carratalá-Tejada

2021

Human Movement Science

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Effects of the walking independence on lower extremity and trunk muscle activity during straight-leg raising following incomplete cervical cord injury

Sugimoto,

Yoshikura,

Maezawa

et al. 2024

Sci Rep

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The purpose of this study was to compare the acceleration and surface electromyography (EMG) of the lower extremity and trunk muscles during straight-leg raising (SLR) in patients with incomplete cervical cord injury according to their levels of walking independence. Twenty-four patients were measured acceleration and EMG during SLR held for 10 s. Data were analyzed separately for the dominant and nondominant sides and compared between the nonindependent (NI) and independent (ID) groups based on their levels of walking independence. Frequency analysis of the EMG showed that the high-frequency (HF) band of the contralateral biceps femoris (BF) in the ID group and bands below the medium-frequency (MF) of the BF and the HF and MF bands of the rectus abdominis in the NI group were significantly higher during dominant and nondominant SLR. During the nondominant SLR, the low-frequency band of the internal oblique and the MF band of the external oblique were significantly higher in the NI group. The ID group mobilized muscle fiber type 2 of the BF, whereas the NI group mobilized type 1 of the BF and types 2 and 1 of the trunk muscles to stabilize the pelvis. This result was more pronounced during the nondominant SLR.

show abstract

Traces of muscular fatigue in the rectus femoris identified with surface electromyography and wavelets on normal gait

Cited by 5 publications

References 46 publications

Frequency Shifts in Muscle Activation during Static Strength Elements on the Rings before and after an Eccentric Training Intervention in Male Gymnasts

Frequency Shifts in Muscle Activation during Static Strength Elements on the Rings before and after an Eccentric Training Intervention in Male Gymnasts

Electromyographic traces of motor unit synchronization of fatigued lower limb muscles during gait

Effects of the walking independence on lower extremity and trunk muscle activity during straight-leg raising following incomplete cervical cord injury

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