ABSTRACT
For investigation of character and frequency of detection of violations of rhythm and conductivity there was effectuated monitoring of ECG using Holter monitor. In investigation were included 238 military servicemen of young age (23-35 years old), situated in similar conditions of life, chosen according to practical health. Normative indexes of daily variation of arrhythmia were determined using method of non-parametric analyze of qualitative data. On the base of this method, acceptable for using in elaboration of normative values of physiological indexes, the norm could be called isolated cases of ectopic complexes of 5 ventricular and of 24 supraventricular extrasystoles (SVE) for a day. Ventricular extrasystoles (VE) are monotypic, SVE could be polytypic, also could be singular paired complexes. Also could be combination of VE and SVE. Other, more complicated violations of rhythm could be referred either to pathological evidence or to premorbid conditions. Violations of conductivity should be absent in norm.