Background. Diseases of the cardiovascular system (CVS) are among the most common diseases of humankind (WHO). Monitoring of blood pressure (BP) is an accessible method for evaluating global hemodynamic processes. The functional reserves of the circulatory system are traditionally determined by the use of functional loading trials and tests. Objectives. The aim of the study is to enhance the information collected during the blood pressure measurement process by studying the levels of adaptation of the CVS to physical activity with morphological, temporal, spectral and correlation analyses of arterial oscillography (AO). Material and methods. In 178 healthy individuals aged 18–20 years, arterial oscillograms were recorded during blood pressure measurement and correlations of the functional reserve of the cardiovascular system at various stages of adaptation to a Ruffier test were investigated. Results. The proposed methods of AO analysis significantly increase the informativeness of the procedure for blood pressure measurement, provide an opportunity to conduct a visual analysis of AOs and to assess the state of the cardiovascular system, its reserve capabilities and its ways of adapting to shoulder compression at rest, after physical load and in the process of recovery. Conclusions. Using the information technologies proposed by the authors of the morphological, temporal, spectral and correlation analysis of arterial oscillograms, their evaluation and clinical interpretation significantly increase the informativeness of the blood pressure measuring process. They can be used for early detection of pre-morbid conditions and functional blood circulation reserves, which will help the physician to more effectively plan a preventative, diagnostic and therapeutic process.