Effects of N-acetylcysteine supplementation on cellular damage and oxidative stress indicators in volleyball athletes.

Autor:	de Jesus Pires de Moraes A; Sciences Center of Health and Sport, State University of Santa Catarina, Florianópolis, Brazil.; University of the Itajaí Valley, Itajaí, Brazil., Andreato LV; Sciences Center of Health and Sport, State University of Santa Catarina, Florianópolis, Brazil.; Department of Physical Education, University Center of Maringa, Parana, Brazil., Branco BHM; Department of Physical Education, University Center of Maringa, Parana, Brazil.; Postgraduate Program in Health Promotion, University Center of Maringá, Maringá, Brazil., da Silva EL; Department of Clinical Analysis, Federal University of Santa Catarina, Florianópolis, Brazil., Gonçalves MA; Sciences Center of Health and Sport, State University of Santa Catarina, Florianópolis, Brazil., Dos Santos RZ; Sciences Center of Health and Sport, State University of Santa Catarina, Florianópolis, Brazil., Becker AM; Department of Clinical Analysis, Federal University of Santa Catarina, Florianópolis, Brazil., da Silveira Cavalcante L; Department of Clinical Analysis, Federal University of Santa Catarina, Florianópolis, Brazil., da Silva Casagrande F; Department of Clinical Analysis, Federal University of Santa Catarina, Florianópolis, Brazil., Benetti M; Sciences Center of Health and Sport, State University of Santa Catarina, Florianópolis, Brazil.
Jazyk:	angličtina
Zdroj:	Journal of exercise rehabilitation [J Exerc Rehabil] 2018 Oct 31; Vol. 14 (5), pp. 802-809. Date of Electronic Publication: 2018 Oct 31 (Print Publication: 2018).
DOI:	10.12965/jer.1836152.076
Abstrakt:	The purpose of this study was to evaluate the effects of N-acetylcysteine (NAC) supplementation on cellular damage and oxidative stress indicators in volleyball athletes. Twenty male volleyball athletes at national level performed a physical training session and were divided into 2 groups, which for 7 days took the placebo substance or NAC. After 7 days the athletes repeated the same training session. In both sessions, blood samples were collected 30 min before and immediately after the training session to measure cellular damage and oxidative stress markers. The main results show that, although higher concentrations of glutathione peroxidase and superoxide dismutase were observed in post-session 1 than those in postsession 2, the other markers showed an increase in antioxidant action after supplementation of NAC, once the effect of experimental conditions ( P =0.030) were observed in: time effect ( P <0.001) and interaction ( P =0.019) for total glutathione; time effect ( P <0.001) and interaction ( P <0.001) for reduced glutathione; and time effect ( P <0.001) for ferric-reducing antioxidant potential. The oxidant action indicated by the protein carbonyl was higher in the placebo group than in the NAC group ( P =0.028), but a time effect ( P <0.001) for the thiobarbituric acid reactive substances showed lower values in presession 1 than in presession 2. For the cellular damage markers, antagonistic results between markers were found. Based in the results, the supplementation of NAC during a short period was effective in reducing oxidant action and increasing antioxidant action. However, conclusive alterations in the responses of the cellular damage markers were not obtained. Competing Interests: CONFLICT OF INTEREST No potential conflict of interest relevant to this article was reported.
Databáze:	MEDLINE
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