Sentences with phrase «voluntary muscle activity»

Not exact matches

Perchance to Dream In 1953 Nathaniel Kleitman of the University of Chicago and his graduate student Eugene Aserinsky discovered that slumber, which had been considered a single continuous period of downtime, contains recurring periods in which the sleeper's eyes move about, heartbeat and breathing become irregular, most voluntary muscles are paralyzed and brain activity (as measured by electroencephalography) is heightened.

The presence of different levels of muscle activity has been observed both using surface electrodes and fine wire (intramuscular electrodes) and during maximal voluntary isometric contraction (MVIC), resistance training exercises, and normal humans movements such as gait.

They report that the pronated grip pull up produced comparable (120 % vs. 117 % of maximum voluntary isometric contraction (MVIC) levels) latissimus dorsi muscle activity compared with the supinated chin - up exercise.

They reported that the inverted row performed with a supinated grip produced superior (94 % vs. 79 % of maximum voluntary isometric contraction (MVIC) levels) latissimus dorsi muscle activity compared to the pronated grip inverted row variation.

Botton et al (2013) compared the bench press and the smith machine shoulder press, which reportedly ranged between 56 to 70 % maximum voluntary contraction (MVC) for the anterior deltoid muscle activity.