Physiological substantiation of the application of the index of body composition analysis as an indicator of fitness health level

To characterize fitness health, defined as the state of physical well-being of an organism, due to physical abilities and body composition analysis to have a direct, scientifically-based effect on health, assessment methods are needed. To solve this problem, the study was conducted on the results of preventive examinations of 743 people aged 18-70 at the Health Center including: questionnaires and bioimpedance research. The assessment of physical health level was calculated according to the method of G.L. Apanasenko, the degree of adaptation was determined by the method of P.M. Baevsky. To characterize the ratio of the body composition analysis, an assessment method was developed, based on the determination of bio-impedance parameters of centile intervals and their scores. It allowed to characterize the body composition analysis in the group of patients, where most of the indicators are satisfactory and good. Body composition worsens with age and improves with increasing levels of physical activity. The optimal ratio of components in most cases is observed among men and women with good physical health, as well as among young men from sports sections of swimming and arm-wrestling and among girls involved in fitness and athletics. The ratio of good and excellent index estimates with satisfactory and intense adaptation confirms the conditioning mechanisms for intense muscle activity due to the optimal ratio of the body composition analysis. The index correlates intensely with physical activity and physical health of men and women that justifies its use for assessing fitness health.