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Evaluation of electromyographic activity and heart rate responses to isometric exercise. The role played by muscular mass and type BJMBR
Silva,E.; Oliveira,L.; Catai,A.M.; Ferreira-Filho,P.; Bérzin,F.; Gallo Jr.,L..
The purpose of the present study was to examine the relationship between the electromyographic (EMG) activity and heart rate (HR) responses induced by isometric exercise performed by knee extension (KE) and flexion (KF) in men. Fifteen healthy male subjects, 21 ± 1.3 years (mean ± SD), were submitted to KE and KF isometric exercise tests at 100% of maximal voluntary contraction (MVC). The exercises were performed with one leg (right or left) and with two legs simultaneously, for 10 s in the sitting position with the hip and knee flexed at 90o. EMG activity (root mean square values) and HR (beats/min) were recorded simultaneously both at rest and throughout the sustained contraction. The HR responses to isometric exercise in KE and KF were similar when...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Knee; Isometric exercise; Heart rate; Electromyography; Rectus femoris; Biceps femoris.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999000100017
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