ABSTRACT
We studied the changes in indexes of variability of heart rate and fractal neurodynamics under conditions of controlled breathing on fluctuation frequency of a spectrum of heart rate. It is shown that the controlled breathing, which frequency corresponds to a frequency of localization of the maximum peak of capacity ofa heart rate in low-frequency is a powerful mechanism of management of heart rate and change of a functional condition of an organism as a whole.
Subject(s)
Heart Rate/physiology , Respiratory Mechanics/physiology , Respiratory Rate/physiology , Adolescent , Algorithms , Baroreflex/physiology , Breathing Exercises , Electrocardiography , Female , Humans , Young AdultABSTRACT
The influence of hypokinetic stress and low-intensive electromagnetic field of extremely high frequency (EMF of EHF) on cytokine concentration changes (IL-1, 2, 4, 6 and TNF-6) in serum of rats was investigated. Using an immunoenzyme method it was shown that the concentration of the investigated cytokines under influence of the hypokinetic stress and low-intensive EMF of EHF is changed in an inversed direction.. An isolated influence of EMF of EHF on animals resulted in significant decrease of IL- 1B concentration and in the tendency of IL-6 concentration reduction while concentration of IL-2, IL-4 and TNF-6 increased. Mobility restriction of animals has caused substantial growth of IL-1B, IL-2, IL-6 and TNF-6 concentration with simultaneous decrease of IL-4 concentration. Variation of the investigated parameters differed considerably from the results obtained for animals in the case of a restricted mobility, which does not take place under activity of EMF of EHF with the combined influence of hypokinesia activity and EMF of EHF. It is assumed that revealed changes of the cytokine profile after the use of low-intensive EMF of EHF resulted in increase of the nonspecific immunological reactivity level of animals that is very important component of its physiological action.
Subject(s)
Cytokines/blood , Immune System/radiation effects , Microwaves , Stress, Psychological/immunology , Animals , Cytokines/immunology , Male , Rats , Restraint, Physical , Stress, Psychological/bloodABSTRACT
The infradian rhythmicity of the open-field behavior of rats under the influence of EHF-waves was investigated. It was shown the development of desynchronosis under the influence of EHF-waves on intact rats. Under the influence of EHF-waves the development of desynchronosis on hypokinesic rats was remarkable decreased. It was found that EHF-waves are able to modify the temporary organization of physiological systems, however, the magnitude and the character of these changes depend on functional state of the organism. It has been suggested that the ability of EHF-waves to modify temporary organization of physiological systems plays an important role in mechanisms of their biological action.
Subject(s)
Circadian Rhythm/physiology , Electromagnetic Fields , Hypokinesia/radiotherapy , Lymphocytes/radiation effects , Microwaves/therapeutic use , Neutrophils/radiation effects , Animals , Circadian Rhythm/radiation effects , Glycerolphosphate Dehydrogenase/metabolism , Hypokinesia/blood , Hypokinesia/physiopathology , Lymphocytes/enzymology , Male , Neutrophils/enzymology , Rats , Succinate Dehydrogenase/metabolismABSTRACT
The effects of low intensity electromagnetic fields (EMF) on the hypokinetic stress were studied on rats. It has been shown that exposure to EMF, combined with hypokinesia or without it, prevented the typical stress reaction on the limited motility. EMF was determined to modify the adaptive processes which resulted in the adaptive activation and limiting stress reaction. Adaptation was characterized with lower anxiety and excitability of the central nervous system, and a higher level of non-specific resistance, as compared to the stress reaction.
