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Cardiorespiratory and metabolic determinants during moderate and high resistance exercise intensities until exhaustion using dynamic leg press: comparison with critical load BJMBR
Arakelian,V.M.; Goulart,C.L.; Mendes,R.G.; Caruso,F.C.; Baldissera,V.; Arena,R.; Borghi-Silva,A..
The objective of this study was to assess cardiovascular, respiratory, and metabolic responses during a commonly used dynamic leg press resistance exercise until exhaustion (TEx) at different intensities and compare with critical load (CL). This was a prospective, cross-sectional, controlled, and crossover study. Twelve healthy young men (23±2.5 years old) participated. The subjects carried out three bouts of resistance exercise in different percentages of 1 repetition maximum (60, 75, and 90% 1RM) until TEx. CL was obtained by means of hyperbolic model and linearization of the load-duration function. During all bout intensities, oxygen uptake (VO2), carbon dioxide production (VCO2), ventilation (VE), and respiratory exchange ratio (RER) were obtained....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Load; Physiological; Muscle fatigue; Exercise; Cardiorespiratory.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2018001100613
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Effects of the infrared lamp illumination during the process of muscle fatigue in rats BABT
Abou-Hala,Andréia Zarzour; Barbosa,Daniella Galvão; Marcos,Rodrigo Labat; Pacheco-Soares,Cristina; Silva,Newton Soares da.
In this study the effects of infrared lamp illumination during the muscle fatigue process was studied. Three different groups (n=5) were used: one control group and two treated (Infrared Lamp 780-1400nm), with the energy densities of 0.5 and 1.0 J/cm² and time of illumination of 300 seconds. The treated animals were illuminated in one point directly in the tibialis muscle, after the first tetanic contraction out of six, with an interval between each tetany. The results were registered in an electrophysiograph and the intensity of the force of contraction in grams was analysed. It was observed that the control group presented a reduction in the intensity of the force of contraction, while the treated group managed to maintain it, which was clearly evident...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Muscle fatigue; Infrared illumination; Muscle tension; Tetany.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000300006
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