title: Effect of exercise on oxidative stress in individuals with glucose-6-phosphate dehydrogenase deficiency.
abstract: The effect of exercise on oxidative stress in glucose-6-phosphate dehydrogenase (G6PD)-deficient individuals was investigated.
  
  
  METHODS
  Nine G6PD-deficient males and nine males with normal G6PD activity were selected and requested to run at approximately 75% their maximum heart rate for 45 min. Blood samples were collected prior to and immediately after exercise. Several hematological parameters, reduced glutathione (GSH), oxidized glutathione (GSSG), lipid hydroperoxides, thiobarbituric acid reactive substances (TBARS), protein carbonyls, catalase and total antioxidant capacity (TAC) were measured in the blood before and after each exercise bout.
  
  
  RESULTS
  GSH was significantly (more than two-fold) higher in the control group compared to the G6PD-deficient group at baseline, whereas GSSG, GSH/GSSG and lipid hydroperoxides were not different between the two groups. Exercise did not affect the levels of any oxidative stress marker. There was no evidence of Heinz body formation neither at rest nor after exercise in either group. Exercise of moderate intensity and duration did not result in an increase of blood oxidative-stress biomarkers in G6PD-deficient males nor in matched controls. It appears that G6PD-deficient individuals may exercise without experiencing a rise in oxidative stress at an exercise intensity approximately 75% of their maximum heart rate.
authors.affiliation: Department of Physical Education and Sport Science, University of Thessaly, 42100 Trikala, Greece. ajamurt@pe.uth.gr
authors.forename: Athanasios Z
authors.initials: AZ
authors.lastname: Jamurtas
authors.forename: Ioannis G
authors.initials: IG
authors.lastname: Fatouros
authors.forename: Nikos
authors.initials: N
authors.lastname: Koukosias
authors.forename: Eirini
authors.initials: E
authors.lastname: Manthou
authors.forename: Trifon
authors.initials: T
authors.lastname: Tofas
authors.forename: Christina
authors.initials: C
authors.lastname: Yfanti
authors.forename: Michalis G
authors.initials: MG
authors.lastname: Nikolaidis
authors.forename: Yiannis
authors.initials: Y
authors.lastname: Koutedakis
mesh_terms: D000328:Adult; D002149:Energy Intake / Q000502:physiology; D004906:Erythrocyte Count; D004912:Erythrocytes / Q000166:cytology; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test; D005954:Glucosephosphate Dehydrogenase / Q000097:blood; D005955:Glucosephosphate Dehydrogenase Deficiency / Q000097:blood* / Q000378:metabolism; D005978:Glutathione / Q000097:blood; D019803:Glutathione Disulfide / Q000097:blood; D006400:Hematocrit; D006454:Hemoglobins / Q000032:analysis; D006801:Humans; D008054:Lipid Peroxides / Q000097:blood; D008297:Male; D010084:Oxidation-Reduction; D018384:Oxidative Stress / Q000502:physiology*; D010101:Oxygen Consumption / Q000502:physiology
chemical_list: D006454:Hemoglobins; D008054:Lipid Peroxides; D005954:Glucosephosphate Dehydrogenase; D005978:Glutathione; D019803:Glutathione Disulfide