Why the study?
To illuminate the characteristics of electrical detection signals under acute fatigue and evaluate the primary role of the central nervous system in fatigue progress through correlation analysis.
Does acute fatiguing exercise alter electrical detection signals and what is the role of the central nervous system in fatigue progress in healthy students?
Does acute fatiguing exercise alter electrical detection signals and what is the role of the central nervous system in fatigue progress in healthy students?
The central nervous system may play a primary role in fatigue progression, with the autonomic nervous system acting as a link between the CNS and muscle dysfunction.
Answers are grounded in this paper and cite their sources.
Signals under acute fatigue highlight CNS role; leaves open translation to clinical fatigue assessment.
BACKGROUND: The aim of this study was to illuminate the characteristics of electrical detection signals under acute fatigue, and to discuss the main role of the central nervous system (CNS) in fatigue progress by correlation analysis.METHODS: Sixteen healthy students participated at measurement of electrical signals under rest, fatigue and recovery. Prefrontal cortexes, the front-side of hand, and rectus femoris muscle (RF), medial vastus muscle (MV) were settled to measure signals.RESULTS: Power spectra of alpha, theta, and beta waveform showed synchronous increase under fatigue. Root means square (RMS) showed an increase with median frequency (MF) showing decrease. In addition, Stress Index (SI) and low frequency (LF) showed increase, but the standard deviation of R-R interval (SDNN), and high frequency (HF) performed decrease. Skin conductance level (SCL) also showed a decrease under fatigue. Correlation analysis proved that all electroencephalograph (EEG) waveforms have a strong or very strong correlation with MF-MV, LF, and HF (rs>0.60) under power spectrum analysis. However, no strong relationships were found between HRV, EMG, and SC parameters.CONCLUSIONS: CNS may play the main role in fatigue progress, and the autonomic nervous system (ANS) may be the ties of CNS and muscle. Central alteration stem from concurrently inhibition and excitatory activation may induce the ANS and muscle dysfunction.
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CHI et al. (2022) studied this question.
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