Lokalaus šaldymo poveikis keturgalviui šlaunies raumeniui

Abstract

The aim of the research was to establish the effect of local cooling on the properties of muscles quadriceps of femoris and muscle fatigue. The subjects were 6 healthy male students aged 20-23 actively engaged in sports. Measurements of involuntary contraction force of the muscle as well as muscle contraction and muscle relaxation time measurement were made. Muscle fatigue was induced by the method of electrical stimulation applying stimulation 24 times at frequency 50 Hz prior to cooling and after it. the muscle quadriceps of femoris was cooled in water at 15 C for 15 min. The results obtained have shown the effect of muscle cooling on the involuntary contraction force to be of two kinds: i. e. half of the subjects experienced an increase in the involuntary contraction force, whereas the other half - a decrease in the force accordingly. The greater the involuntary contraction force of the muscle studied the smaller the fatigue prior to cooling and folowing it. All the subjects experienced a decrease in fatigue after cooling