Ergonomic assessment of sport skies based on analysis of athlete's hemodynamics at loading test using tonometry and electrocardiography

Occlusive tonometry and resting electrocardiography are widely used in medicine to diagnose and monitor the state of the cardiovascular system. In recent years, software and hardware implementations of these methods for fitness and sports training have been developed thanks to the advent of portable and mobile gadgets. The paper presents the results of an analysis of the athlete’s hemodynamics in real time according to the data of tonometry and electrocardiography performed synchronously during the three-stage load-speed testing “rest - load - recovery”. It is shown that application of these diagnostic methods, one-dimensional biomechanical modelling of hemodynamics and statistical dependences obtained experimentally allow us to monitor very important and informative indicators of energy efficiency of human movement (oxygen consumption, dynamics of oxygen debt, shared distribution of aerobic and anaerobic energy sources). In fitness, sport training and competition conditions such monitoring has been realized only with the use of complex and expensive devices. In this regard, it is proposed to use the mobile software and hardware complex developed by the authors and biomechanical criteria (heart rate before and after exercise, oxygen consumption, oxygen debt) characterizing the energy consumption of an athlete, including the quality rating of sports equipment, in particular, cross-country skis. The selection of skis adequate bionically is based on a statistical analysis of the results of load-speed testing of a group of athletes.