 Keywords: heart, a rhythm, students, acclimatization, educational activity, a heart rate variability, HRV, human physiology, HRV, heart rate variability, human physiologyO.V.Polyanskaya. A heart rate variability as a method of an assessment of adaptedness of students of younger courses to educational activity / O.V.Polyanskaya, M.K.Reznikov // Modern problems of clinical and experimental medicine: the Collection of proceedings. - Voronezh: the Voronezh state university. - 2001.-Ñ.48-49. THE HEART RATE VARIABILITY AS THE METHOD OF THE ASSESSMENT OF ADAPTEDNESS OF STUDENTS OF YOUNGER COURSES TO EDUCATIONAL ACTIVITYFaculty of normal physiology In connection with the raised load on regulate systems (including on vegetative nervous system) students of younger courses are bunch of risk on failure of acclimatization to educational process. One of means of an objective assessment of a state of a vegetative link of a regulation is the method of a rithmography. It was supposed to secure on the basis of analysis hearts rate variability (HRV) of persons with predilection to a vegetative dysfunction. 25 students of II course in the age of 18-19 years (16 men and 9 women) have been surveyed. Registration of a rithmogram was effected with the help of the hardware-software complex developed at the Voronezh state technical university "Rhythm - 1Ì." Rithmograms on standard procedure in a state of rest were recorded and at ortoclinostatic assay. At 6 examinees after reception of the informed consent assay with anaprilin (10 mg / 70 of kg of mass of a body) for downstroke b adrenergic sympathetic influences has been lead. Before reception of a preparation and on a pique of his action (in 1,5 hours) ortoclinostatic assay and assay with a fixed respiratory rhythm (5 minutes on 6 cycles in one minute) was carried out. On value of a heart rate in a state of rest of examinees have conditional divided into 3 bunches: "normotonics" - 15 person (a heart rate - 60-79 óä/mines); "sympatotonics" - 7 person (the heart rate - 80 and is higher than óä/mines); "vagotonics" - 3 persons (the heart rate - is lower than 60 óä/mines). At carrying out of ortoclinostatic assay at 3 bunches of a heart rate authentically grew at transition in a position "standing" and it was reduced up to a level below initial at return to a horizontal position. At rise it was decreased RRñð, SDNN (it is especial in bunch of "vagotonics"), quotient LF/HF (a parameter of symatic-parasympatic attitudes) grew, that, probably, is connected to a sympatic activation and with ascending the contribution of the baroreflection mechanism in a self-regulation of a heart rate. In bunch of "normotonics" at the majority of examinees vigor in a LF-range of a spectrum insignificantly exceeded vigor in a HF-range. In bunch of "vagotonics" vigor in a LF-range considerably exceeded vigor in a HF-range that is not compounded with the data of the literature. At carrying out of clinostatic assay of a heart rate dropped below initial level, probably, in connection with conservation of sympatic regulate influences on vascular tone and augmentation of venous return of a blood to heart. Were enlarged SDNN, RRñð, vigor in a HF-range, it was decreased - in LF, quotient LF/HF. was reducedAt carrying out of assay with a fixed respiratory rhythm in comparison with an initial state the heart rate, vigor in a LF-range, quotient LF/HF grew, were decreased RMSSD and vigor in a HF-range. It can testify to an activation of sympatic system. During a deep inspiration inflow of a venous blood to heart, and, on a Bainbridge reflex is enlarged, the heart rate grows. The imposed respiration, being the revolting factor, through cortex influences starts sympatic mechanisms. On a background of reception of anaprilin of a heart rate it was authentically reduced. The insignificant augmentation of parameters of activity of a parasympatic department (RMSSD, vigor of a spectrum in a HF-range) was observed. Thus, at carrying out of various functional trials natural changes of parameters of HRV that allows to recommend the given procedure for an evaluation of changes of the vegetative status during acclimatization are marked. To discuss a material at a forum of a site Keywords: heart, a rhythm, students, acclimatization, educational activity, a heart rate variability, HRV, human physiology, HRV, heart rate variability, human physiology Main | Abstracts, compositions, lectures | Psychiatry | Links
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