Active State Durations of Rat Gastrocnemius Muscle

摘要: For rat gastrocnemius muscle it has been found that: 1. The shortening velocity of an isotonic afterloaded contraction increases with the stimulation frequency up to a 425 imp/sec, about twice as high that above which no substantial increase in isometric peak tension occurs. 2. initial form curves for one and two closely spaced impulses have be consistent active state concept Hill. 3. duration plateau after single impulse, indicated by capacity shorten, is longer than 1.5 msec. 4. interval just necessary fusion at 150 msec more long longest possible impulse. 5. From analysis oscillations frequencies somewhat below mechanical latency short first impulse (0.6 msec). maximal rate rise is, however, considerably delayed, implications this finding are discussed terms concept.