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ECPB 2019, 88(4): 38–44
https://doi.org/10.25040/ecpb2019.04.038
Research articles

Changes in the hemodynamics of athletes under the influence of anaerobic physical tests of different duration

L.S. VOVKANYCH, A.V. DUNETS-LESKO
Abstract

The 30-second Wingate test and the Conconi test are used to measure the anaerobic power, anaerobic capacity and anaerobic threshold level of athletes. Analysis of the changes in the hemodynamics of athletes with high-power training loads under the influence of anaerobic tests of different durations is promising for the estimation of their fitness level. There are very few studies of changes in the hemodynamics indexes after the Wingate test, and no one was found concerning the changes after Conconi test. That is why the aim of our study was to investigate changes in the hemodynamics of karate athletes under the influence of the 30-second Wingate test and the Conconi test. The subjects were highly qualified (Candidate for Master of Sport and Master of Sport) male karate athletes (n = 15), 28,87 ± 0,83 years old, 70,93 ± 2,58 kg weight and 175,87 ± 1,80 cm height. Heart rate (HR), systolic (SBP) and diastolic (DBP) blood pressure were measured. Main hemodynamic parameters were determined by calculation methods. Data was collected in conditions of physiological rest, immediately after the end of Wingate and Conconi tests and after 5 minutes recovery after the tests. Tests were performed with the use of cycle ergometer. The subject performed a 5 minutes cycling warm up before Wingate test. The resistance load was adjusted to 3.5 W/kg in Wingate test. The Conconi test was started at 100 W load for 70 kg of the subject body weight, with the subsequent increase in workload by 20 W and proportional decrease in duration of the intervals until exhaustion. At rest the mean value of HR was 69,13 ± 1,28 bpm, SBP – 124,87 ± 1,59 mm Hg and DBP – 81,53 ± 1,91 mm Hg. The calculated value of stroke volume (SV) was 73,82 ± 2,40 ml (normal level – 71,45 ± 1,57 ml) and cardiac output (CO) – 5,11 ± 0,20 l/min. We found that under the influence of Wingate test the heart rate increased to 165.00 ± 4.17 bpm, the SBP increased to 173.08 ± 3.82 mm Hg, DBP decreased to 74,62 ± 3,60 mm Hg, SV rose to 130.17 ± 3.96 ml, and CO – to 21.49 ± 0.86 l/min. Systemic vascular resistance (SVR) reduced by 73%. Most of hemodynamics indices did not return to initial level after the 5 minutes of recovery period after the Wingate test. The HR remained higher by 56%, SBP – by 14%, SV – by 42%, CO – by 120%, SVR was lower by 54% in comparison to rest level. Though the duration and number of loads in Conconi test highly exceeds the same in Wingate test, the changes in hemodynamic were quite similar. In particular, the HR reached 185.69 ± 2.73 bpm, the SBP – 170.77 ± 4.12 mm Hg, DBP decreased to 70,38 ± 4,51 mm Hg, SV increased to 129.99 ± 4.20 ml, and CO – to 24.15 ± 0.91 l/min. However, the values of HR and CO were by 12% higher, while SVR was by 14% lower after the Conconi test in comparison to those after the Wingate test. Nevertheless, recovery of the number of hemodynamic indexes (SBP, pulse pressure, SV, CO and others) was found to be faster after the Conconi test. The levels of the SBP was lower by 5%, pulse pressure – by 13%, SV – by 10%, CO – by 11% at the 5 min of recovery after the Conconi test in comparison to those after the Wingate test. In summary, it has been established that both Wingate and Conconi tests caused significant changes in hemodynamic indices. Changes in some indices at the end of Conconi test exceed those after the Wingate test by 12-14%, although recovery after the Conconi test was faster. The intensive and short-term Wingate test largely reveals the functional reserves of the circulatory system of karate athletes and is promising for assessing the level of athletes’ adaptation to high-power loads.

Received: 5.12.2019

Keywords: karate, Wingate test, Conconi test, stroke volume

Full text: PDF (Ukr) 460K

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