Article
The research purpose – is to assess the reliability of various Wingate test indicators among combat athletes.
Methods and organization of the research. 10 combat athletes with qualifications ranging from the second category to Candidate for Master of Sports (CMS) participated in the study. The Wingate test was used, conducted in two stages with a 30-minute break between them. At each stage, athletes performed three tests: the first two for 5 seconds with a 15-second break, followed by a 15-second test after 30 seconds of rest. To verify the reliability of the data, the intraclass correlation coefficient (ICC) was used in the SPSS 20 program, and the data were classified according to the degree of similarity from low to very high. Statistical significance was assessed using Student's t-test or the Wilcoxon test, and results are presented as mean values, standard deviations, and, in some cases medians and quartiles.
Results and discussion. The study revealed that the peak power of athletes, assessed during the first two tests, showed high reproducibility with an ICC of 0.87, indicating a low level of fatigue. However, the decrease in performance within stages indicates the insufficiency of short rest periods for complete recovery. There were no statistically significant differences between the first and fourth tests, confirming the sufficiency of rest between stages for reproducing results. A difference in ICC was observed between the first and second stages of testing, which may be associated with different degrees of fatigue and motivation among participants. The time to reach peak power depended on the execution technique and the coordination of muscle actions involved in the test. The fatigue index was found to be difficult to interpret due to the influence of test duration and motivation. The results showed that maximum power strongly correlated with the subjects' motivation and was inversely proportional to the time to reach peak power in short tests. These data highlight the importance of individual differences in the alactic and lactic energy systems and the specificity of lactate transporter function in the context of recovery and fatigue between tests.
Conclusion. The study demonstrated that peak power is the most reproducible indicator with a high ICC coefficient (0.87, p < 0.05), followed by the fatigue index (ICC = 0.8, p < 0.05). The time to peak power requires multiple tests for accurate assessment due to their low reproducibility and high variability.
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