L S Grigor'eva

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By isokinetic dynamometry the effect of 7-day water immersion on the velocity-strength properties of the triceps and anterior tibial muscles was investigated. The exposure decreased significantly the maximum strength of the leg extensors (about 30%); this was seen in a large velocity range (60-180 degrees/s) and during static movements. The decline of the(More)
Experiments were carried out to study the effect of 7-day immersion hypokinesia on precision movements that included reproduction of a certain isometric strain of leg muscles (30% from the maximum voluntary level) and angular displacement of the ankle (15 degrees) relative to the 90 degrees position. On the first postimmersion day the precision level(More)
The effect of various types of support elimination (actual zero-g, water immersion, and head-down tilt) on the strength-velocity properties and tone of leg muscles was investigated. With all the exposures used, there was a high correlation between the tone decrease and the strength potential of antigravitational muscles, as well as the degree of support(More)
A method of minor protein P55 isolation from extract of soluble proteins of A-zone of the sarcomere from rabbit skeletal muscle is described. It is shown that this protein inhibits Ca2+-ATPase of myosin and Mg2+-ATPase of reconstructed actomyosin, but it does not affect superprecipitation of actomyosin. The molecular weight which is determined by mobility(More)
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