نتایج جستجو برای: contractions

تعداد نتایج: 23024  

Journal: :Muscle & nerve 2014
Austin J Bergquist Matheus J Wiest Yoshino Okuma David F Collins

INTRODUCTION Neuromuscular electrical stimulation (NMES) over a muscle belly (mNMES) generates contractions predominantly through M-waves, while NMES over a nerve trunk (nNMES) can generate contractions through H-reflexes in people who are neurologically intact. We tested whether the differences between mNMES and nNMES are present in people with chronic motor-complete spinal cord injury and, if...

Journal: :Axioms 2022

In this paper, we consider several problems related to the so-called multi-valued Feng–Liu–Subrahmanyan contractions in complete metric spaces. Existence of fixed points and strict points, as well data dependence stability properties for point problem, are discussed. Some results presented, under appropriate conditions, some open questions pointed out. Our extend recent given graph Subrahmanyan...

Journal: :Moroccan Journal of pure and applied analysis 2022

Abstract Recently, Karapinar, Aydi and De Hierro introduced the notions of interpolative Kannan-type contractions CRR-type proved that they possess a fixed point when space is complete. In this paper, we show existence points for remains true metric which not necessarily complete give more precise result concerning behaviour Picard sequences arbitrary initial point. We also study some particula...

Journal: :Journal of function spaces 2022

In this work, we introduce weak Pata convex contractions and E -Pata via simulation functions in metric spaces to prove some fixed point results for such mappings. Also, consider an example related contractions. Consequently, our generalize unify the literature.

Journal: :Hypertension 1989
W Auch-Schwelk Z S Katusic P M Vanhoutte

To determine if oxygen-derived free radicals are mediators of endothelium-dependent contractions to acetylcholine in the aorta of spontaneously hypertensive rats (SHR), the mechanism of contraction to xanthine plus xanthine oxidase was studied. Rings, with and without endothelium, of thoracic aorta from normotensive Wistar-Kyoto (WKY) rats and SHR were suspended in organ chambers for isometric ...

Journal: :Journal of applied physiology 2014
Jacques Duchateau Stéphane Baudry

The purpose of this brief review is to examine our current knowledge of the neural control of eccentric contractions. The review focuses on three main issues. The first issue considers the ability of individuals to activate muscles maximally during eccentric contractions. Most studies indicate that, regardless of the experimental approach (surface EMG amplitude, twitch superimposition, and moto...

Journal: :The European respiratory journal 1999
L B Fernandes P J Henry R G Goldie

That endothelin-1(ET-1) plays a mediator role in asthma is consistent with reports of ET-1-induced potentiation of cholinergic nerve-mediated contraction in airways from various animal species. This study examined the effect of ET-1 on cholinergic contractions in human isolated bronchus. Macroscopically nondiseased human bronchial tissue was obtained from 23 patients with respiratory tumours. A...

Journal: :Gut 1989
D Kumar N S Williams D Waldron D L Wingate

Based on short recordings, the rectum has been shown to have contractions with a frequency of five to 10 cycles per minute and slow contractions at three cycles per minute. To define anorectal motility over a prolonged period of time, we have studied 12 healthy volunteers using a fine pressure sensitive anorectal probe. A total of 240 hours of recording was obtained. We observed three types of ...

Journal: :PloS one 2015
Fernando Cross-Villasana Peter Gröpel Michael Doppelmayr Jürgen Beckmann

The execution of unilateral hand contractions before performance has been reported to produce behavioral aftereffects in various tasks. These effects have been regularly attributed to an induced shift in activation asymmetry to the contralateral hemisphere produced by the contractions. An alternative explanation proposes a generalized state of reduced bilateral cortical activity following unila...

Journal: :American journal of physiology. Regulatory, integrative and comparative physiology 2001
T J Koh S V Brooks

We tested the hypothesis that lengthening contractions and subsequent muscle fiber degeneration and/or regeneration are required to induce exercise-associated protection from lengthening contraction-induced muscle injury. Extensor digitorum longus muscles in anesthetized mice were exposed in situ to repeated lengthening contractions, isometric contractions, or passive stretches. Three days afte...

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