| Autor: |
Padoin S; Master Student in Physical Education, State University of Londrina, Londrina, Brazil., de Freitas VH; Integrado College, Campo Mourão, Brazil., Cleto DAM; Doctor Student in Physics, State University of Londrina, Londrina, Brazil., Zeffa AC; Master Student in Odontology, State University of Londrina, Londrina, Brazil., Nakamura FY; Department of Medicine and Aging Sciences, University 'G. d'Annunzio' Chieti-Pescara, Chieti, Italy., Andrello AC; Department of Physics. Center of Exact Sciences, State University of Londrina, Londrina, Brazil., de Paula Ramos S; Study Group of Tissue Regeneration, Adaptation and Repair. Center of Biological Sciences, State University of Londrina, Londrina, Brazil. solangedepaularamos@gmail.com. |
| Abstrakt: |
The aim of this study was to monitor the circulating and salivary ion concentrations by total reflection X-ray fluorescence (TXRF) in futsal players submitted to the futsal-specific intermittent shuttle protocol (FISP). TXRF may allow identification of changes in ion concentrations induced by physical efforts. Saliva and blood samples of 13 male futsal players were collected before (Pre) and after (Post) the FISP. Salivary and plasma ion levels were detected by TXRF, and differences from Pre to Post (paired t test or Wilcoxon test) and correlations between both biological fluids were determined (P < 0.05). All saliva samples presented phosphorus (P), sulfur (S), chlorine (Cl), potassium (K), calcium (Ca), iron (Fe), zinc (Zn), bromine (Br), and rubidium (Rb). S, Cl, Ca, Fe, Cu, Zn, Br, and Rb were detected in all blood samples. K, Cu, Br, and Rb presented reduced secretion rate from Pre to Post samples (P < 0.05). The salivary concentrations of K (r = - 0.53) and Zn (r = 0.54) were correlated with plasmatic concentrations. After FISP, salivary secretion of S (r = - 0.76), Cl (r = - 0.64), P (r = - 0.67), Mn (r = - 0.74), and Zn (r = 0.69) were correlated with plasma levels. We concluded that TXRF may be used to monitor salivary (P, S, Cl, K, Ca, Fe, Zn, Br, and Rb) and circulating (S, Cl, Ca, Fe, Cu, Zn, Br, and Rb) levels of several elements in futsal athletes. However, an acute bout of futsal-specific physical effort did not significantly imbalance ion concentrations in saliva or plasma. |
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