Análise das alterações agudas das concentrações do cálcio, sódio, potássio, glicose e hematócritos em atletas de uma corrida de 45 km em montanha

Abstract

The present study is an analysis of a data collection performed in real time, with stateof-the-art technology, which took place on the occasion of the 2017 Ultramarathon dos Perdidos. The objective of this study was to compare parameters before and after the men’s 45 km race. Blood biomarkers Ca2+, Na+, K+, Glu and Hct, pre and post competition, were used for the investigation, analyzed using the GEM Premier 3000 Gasometry equipment. The statistical study was carried out in the R computing environment (R Core Team, 2022). For the description of the variables and characteristics measured, several measures were obtained, with the calculation of the main quartiles, means, extreme values, standard deviations, and Pearson’s correlation. For follow-up measures (before/after, pre/post), normality tests (ShapiroWilks) and means comparison tests (t-test for paired samples/Wilcoxon signed rank test) were performed. The strenuous nature of the test caused a decrease in total body mass indices, a decrease in Ca2+ concentrations, an increase in Na+ concentrations and a downward variation in K+ concentration. A decrease in glucose concentrations was observed and an increase in the percentage of hematocrit concentration was observed.