title: Protein carbonyl levels correlate with performance in elite field hockey players.
abstract: Excess and incorrectly selected exercise can degrade athletic performance from an imbalance in redox homeostasis and oxidative stress, but well-planned training and nutrition can improve antioxidant capacity. The aim of the study was to investigate how nutrient intake could influence oxidative stress and cell lesion biomarkers after 5 days of training followed by a game. Blood was collected from 10 athletes at the start of training (basal), after training (pre-game), and postgame. Their acceleration capacity also was measured pre- and postgame. Blood analysis showed an increase in lactate concentration postgame (13%) and total antioxidant capacity increased both pre-game (13.1%) and postgame (12.7%), all in comparison with basal levels. An oxidative stress marker, protein carbonyl (PC), increased 3-fold over the course of the game, which correlated with a decreased acceleration (r = 0.749). For biomarkers of tissue damage, creatine kinase and aspartate transaminase (AST) increased postgame by 150% and 75%, respectively. The AST variation had a high negative correlation with energy and carbohydrate consumption and a moderate correlation with lipid and vitamin C intake. Protein intake had a positive but moderate correlation with reduced glutathione. The observed correlations suggest that nutritional monitoring can improve exercise physiological homeostasis and that PC serves as a good biomarker for oxidative stress and performance loss.
authors.affiliation: a Laboratório de Bioquímica do Exercício e Motores Moleculares Departamento de Biocências da Atividade Física, Escola de Educação Física e Desportos, Universidade Federal do Rio de Janeiro, Brazil.
authors.forename: Frederico Luis
authors.initials: FL
authors.lastname: Rosa-Lima
authors.affiliation: b Laboratório de Desenvolvimento de Alimentos para Fins Especiais e Educacionais - DAFEE, Instituto de Nutrição Josué de Castro, Universidade Federal do Rio de Janeiro, Brazil.
authors.forename: Luiz
authors.initials: L
authors.lastname: Lannes
authors.affiliation: a Laboratório de Bioquímica do Exercício e Motores Moleculares Departamento de Biocências da Atividade Física, Escola de Educação Física e Desportos, Universidade Federal do Rio de Janeiro, Brazil.
authors.forename: Diego
authors.initials: D
authors.lastname: Viana-Gomes
authors.affiliation: b Laboratório de Desenvolvimento de Alimentos para Fins Especiais e Educacionais - DAFEE, Instituto de Nutrição Josué de Castro, Universidade Federal do Rio de Janeiro, Brazil.
authors.forename: Anna Paola T R
authors.initials: AP
authors.lastname: Pierucci
authors.affiliation: a Laboratório de Bioquímica do Exercício e Motores Moleculares Departamento de Biocências da Atividade Física, Escola de Educação Física e Desportos, Universidade Federal do Rio de Janeiro, Brazil.
authors.forename: Verônica P
authors.initials: VP
authors.lastname: Salerno
mesh_terms: D000328:Adult; D001205:Ascorbic Acid / Q000008:administration & dosage / Q000097:blood; D001219:Aspartate Aminotransferases / Q000097:blood; D056352:Athletes; D054874:Athletic Performance / Q000706:statistics & numerical data*; D015415:Biomarkers / Q000097:blood; D003402:Creatine Kinase / Q000097:blood; D015444:Exercise / Q000502:physiology*; D005978:Glutathione / Q000097:blood; D006688:Hockey; D006706:Homeostasis / Q000502:physiology; D006801:Humans; D019344:Lactic Acid / Q000097:blood; D008055:Lipids / Q000008:administration & dosage / Q000097:blood; D008297:Male; D009752:Nutritional Status / Q000502:physiology*; D018384:Oxidative Stress / Q000502:physiology*; D050050:Protein Carbonylation / Q000502:physiology*; D055815:Young Adult
chemical_list: D015415:Biomarkers; D008055:Lipids; D019344:Lactic Acid; D001219:Aspartate Aminotransferases; D003402:Creatine Kinase; D005978:Glutathione; D001205:Ascorbic Acid
keywords: athlètes masculins; lesion; lésion; male athletes; nutritional status; oxidative stress; statut nutritionnel; stress oxydatif