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with Muscle Fatigue as keyword

Noninvasive positive pressure ventilation (NPPV) in critically ill patients: preliminary experience

Published in Critical Care

Nonlinear time-course of lumbar muscle fatigue using recurrence quantifications

Published in Biological Cybernetics

Isometric skeletal muscle fatigue is usually assumed to be a linear process based upon the monotonic decrease in spectral frequency of the EMG. Since spectral analysis by fast Fourier transform (FFT) constitutes a linear transformation of the data, the present study was designed to reevaluate the time-course of muscle fatigue with a nonlinear tool,...

Excitation–contraction coupling and fatigue mechanisms in skeletal muscle: studies with mechanically skinned fibres

Published in Journal of Muscle Research & Cell Motility

This review attempts to give an insight into the key aspects of excitation–contraction (E–C) coupling and fatigue in skeletal muscle, in particular summarizing the results and perspectives obtained from studies with mechanically skinned muscle fibres. These skinned fibre studies have provided many novel insights, such as the role of intracellular M...

Electromyographic Parameters of Muscle Fatigue in Patients with Parkinsonism

Published in Human Physiology

The authors studied muscle fatigue in patients with parkinsonism receiving pathogenetic therapy and in elderly healthy subjects by means of turn-amplitude analysis of surface electromyography (EMG). The healthy subjects reacted to fatigue with a significant increase in the amplitude and number of EMG turns during static exercise and a decrease in t...

The effect of massage on localized lumbar muscle fatigue

Published in BMC Complementary and Alternative Medicine

BackgroundThere is not enough evidence to support the efficacy of massage for muscle fatigue despite wide utilization of the modality in various clinical settings. This study investigated the influence of massage application on localized back muscle fatigue.MethodsTwenty-nine healthy subjects participated in two experimental sessions (massage and r...

Comparison between the effects of chronic and acute hypoxaemia on muscle afferent activities from the tibialis anterior ...

Published in Experimental Brain Research

The reflex loops initiated by the activation of muscle afferents are altered by a reduction of the oxygen supply. This has been shown in different mammalian species under experimental conditions of acute or chronic hypoxaemia. In the present study in rats, we compared the effects of acute and chronic hypoxaemia on the activity of afferents from the...

Mechanomyography versus Electromyography, in monitoring the muscular fatigue

Published in BioMedical Engineering OnLine

BackgroundThe use of the mechanomyogram (MMG) which detects muscular vibrations generated by fused individual fiber twitches has been refined. The study addresses a comparison of the MMG and surface electromyogram (SEMG) in monitoring muscle fatigue.MethodsThe SEMG and MMG were recorded simultaneously from the same territory of motor units in two m...

A model of the feline medial gastrocnemius motoneuron-muscle system subjected to recurrent inhibition

Published in Biological Cybernetics

Recurrent inhibition in the mammalian spinal cord is complex, and its functions are not yet well understood. Skeletomotoneurons (α-MNs) excite, via recurrent axon collaterals, inhibitory Renshaw cells (RCs), which in turn inhibit α-MNs and other neurons. The anatomical and functional structure of the recurrent inhibitory network is nonhomogeneous, ...