Muscle Power Output
Mostrando 1-12 de 36 artigos, teses e dissertações.
-
1. Power amplifier circuits for functional electrical stimulation systems
Abstract Introduction: Functional electrical stimulation (FES) is a technique that has been successfully employed in rehabilitation treatment to mitigate problems after spinal cord injury (SCI). One of the most relevant modules in a typical FES system is the power or output amplifier stage, which is responsible for the application of voltage or current puls
Res. Biomed. Eng.. Publicado em: 2017-06
-
2. Efeitos da suplementação de betaína, combinada ou não com a suplementação de creatina, sobre a força máxima, potência e concentrações intramusculares de fosforilcreatina, em indivíduos não treinados em força / Effects of betaine supplementation, combined or not with creatine supplementation on maximal strength, power output and muscle phosphorylcreatine content in non-resistance trained subjects
A betaína é um trimetil derivado do aminoácido glicina. Os seus principais efeitos fisiológicos são atuar como um osmólito e como doador de radicais metil. Especulase que a betaína possa contribuir para a síntese de creatina no músculo esquelético pelo fornecimento de grupos metil, resultante da conversão de betaína em dimetilglicina, para a reme
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/12/2012
-
3. Relationship between work rate and oxygen uptake in mitochondrial myopathy during ramp-incremental exercise
We determined the response characteristics and functional correlates of the dynamic relationship between the rate (Δ) of oxygen consumption ( O2) and the applied power output (work rate = WR) during ramp-incremental exercise in patients with mitochondrial myopathy (MM). Fo
Brazilian Journal of Medical and Biological Research. Publicado em: 2011-04
-
4. Comparação entre diferentes metodologias para detecção do limiar de anaerobiose durante exercício físico em cicloergômetro de homens saudáveis e com infarto do miocárdio.
The objectives of this study were: to determine AT of healthy (HI) and coronary disease (CD) men by ventilatory visual method (gold standard) and by means of Hinkley statistical method applied to heart rate (HR), carbon dioxide output ( CO2) and surface electromyography (sEMG) root mean square (RMS) data, and to compare both methods in each studied group; to
Publicado em: 2006
-
5. Mutually exclusive muscle designs: the power output of the locomotory and sonic muscles of the oyster toadfish (Opsanus tau).
Animals perform a vast array of motor activities. Although it has generally been accepted that muscles are well suited to the function that they must perform, specialization for performing one function may compromise their ability for carrying out another. We examined this principle in the toadfish muscular system: slow-twitch red and fast-twitch white myoto
-
6. Alternative splicing, muscle calcium sensitivity, and the modulation of dragonfly flight performance
Calcium sensitivity of myosin cross-bridge activation in striated muscles commonly varies during ontogeny and in response to alterations in muscle usage, but the consequences for whole-organism physiology are not well known. Here we show that the relative abundances of alternatively spliced transcripts of the calcium regulatory protein troponin T (TnT) vary
The National Academy of Sciences.
-
7. Recovery of power output and muscle metabolites following 30 s of maximal sprint cycling in man.
1. The recovery of power output and muscle metabolites was examined following maximal sprint cycling exercise. Fourteen male subjects performed two 30 s cycle ergometer sprints separated by 1.5, 3 and 6 min of recovery, on three separate occasions. On a fourth occasion eight of the subjects performed only one 30 s sprint and muscle biopsies were obtained dur
-
8. Phosphorylation-dependent power output of transgenic flies: an integrated study.
We examine how the structure and function of indirect flight muscle (IFM) and the entire flight system of Drosophila melanogaster are affected by phosphorylation of the myosin regulatory light chain (MLC2). This integrated study uses site-directed mutagenesis to examine the relationship between removal of the myosin light chain kinase (MLCK) phosphorylation
-
9. Mechanical efficiency and fatigue of fast and slow muscles of the mouse.
1. In this study, the efficiency of energy conversion in skeletal muscles from the mouse was determined before and after a series of contractions that produced a moderate level of fatigue. 2. Initial mechanical efficiency was defined as the ratio of mechanical power output to the rate of initial enthalpy output. The rate of initial enthalpy output was the su
-
10. The efficiency of a flight muscle from the locust Schistocerca americana.
1. The efficiency of the metathoracic tergosternal muscle of the locust Schistocerca americana was examined by simultaneously measuring work output from the muscle and oxygen consumption by the muscle. The work output was determined using the work-loop technique in which the muscle is subjected to periodic strain and to phasic stimulation in the strain cycle
-
11. Energetics of fast- and slow-twitch muscles of the mouse.
1. The energetic cost of work performance by mouse fast- and slow-twitch muscle was assessed by measuring the rates of thermal and mechanical energy liberation of the muscles at 21 degrees C. Thermal energy (heat) liberation was measured using a fast-responding thermopile. 2. Bundles of muscles fibres from the slow-twitch soleus and fast-twitch extensor digi
-
12. Non-linear relationship between O2 uptake and power output at high intensities of exercise in humans.
1. A slow component to pulmonary oxygen uptake (VO2) is reported during prolonged high power exercise performed at constant power output at, or above, approximately 60% of the maximal oxygen uptake. The magnitude of the slow component is reported to be associated with the intensity of exercise and to be largely accounted for by an increased VO2 across the ex