Influence of limit physical loads on the heart rate of sambo, judo, universal combat
The high sensitivity of the duration of cardio-intervals (CI) to physical activity (PA) allows it to be used to search for markers that predetermine exercise tolerance. Purpose of the work: to reveal the patterns of tolerance to the limiting physical activity among the highly qualified wrestlers of various specializations. Materials and methods. The group of active athletes (24 people) was studied: Master of Sports -wrestling (sambo, judo, universal fight). The stress test (veloergo-) was carried out according to the individual Ramp protocol with increment of 30 W. The digitized electrocardiogram was converted into a sequential time series of CI. We studied pNN2-16: prestart (PS) - 30 seconds prior to the start of ergometry; start (ST) - 30 seconds from the start of rotational locomotion with a load of 50 W; the entire load period -every minute. Data were presented as a percentile (Pc) series (25-Me-75). Processing: Statistica 10.0, correlation analysis - Spearmen. Results. Achieving the load maximum is associated in the pre-start period with an increase in the proportion of long-term differences, at the start and 1 st minute of the load - with the maximum level of differences; at 2-4 minutes of load - with reduction of small and increase in long-term differences; at 7-9 minutes of load - with increase in minimal and decrease in long-term differences. Conclusion. The revealed patterns characterize the features of the formation of the maximum physical performance of wrestlers of various specializations, the dynamics of which probably underlies the optimal sports form.