title: Changes in lipid peroxidation and antioxidant capacity during walking and running of the same and different intensities.
abstract: The aim was to investigate the changes in lipid peroxidation, antioxidant enzyme activities, and muscle damage in the same and different exercise intensities during walking and running. Fourteen healthy males participated in this study. The subjects' individual preferred walk-to-run transition speeds (WRTS) were determined. Each subject covered a 1.5-mile distance for 4 exercise tests; walking (WRTS-W) and running (WRTS-R) tests at WRTS, 2 kmxh-1 slower walking than WRTS (WRTS-2) and 2 kmxh-1 faster running than WRTS (WRTS+2). Blood samples were taken pre, immediately, and 30 minutes post each test. The changes in (MDA) and glutathione (GSH) levels and superoxide dismutase (SOD), catalase (CAT), and creatine kinase activities were measured. Oxygen uptake, carbon dioxide output, oxygen uptake per kilogram of body weight, and heart rate during exercises were significantly higher in both the WRTS-W and the WRTS+2 exercises compared with the WRTS-2 and WRTS-R. Oxygen consumption and energy expenditure were higher in walking than in the running exercise at the preferred WRTS and only WRTS-W exercise significantly increased MDA levels. Catalase activities were increased by WRTS-W, WRTS-R, and WRTS+2 exercises. Changes in SOD and CAT activities were not different between walking and running exercises at the preferred WRTS. Total plasma GSH increased in response to WRTS-W exercise, which could be associated with an increase in MDA. Also, total GSH levels 30 minutes postexercise were significantly lower than postexercise in WRTS-2, WRTS-W, and WRTS+2 exercises. Our results indicate that walking and running exercises at the preferred WRTS have different oxidative stress and antioxidant responses.
authors.affiliation: Department of Trainer Education, School of Physical Education and Sports, Selçuk University, Aleaddin Keykubat Campus, Konya, Turkey. ssbalci@gmail.com
authors.forename: Sükrü Serdar
authors.initials: SS
authors.lastname: Balci
authors.forename: Nilsel
authors.initials: N
authors.lastname: Okudan
authors.forename: Hamdi
authors.initials: H
authors.lastname: Pepe
authors.forename: Hakki
authors.initials: H
authors.lastname: Gökbel
authors.forename: Serkan
authors.initials: S
authors.lastname: Revan
authors.forename: Firuze
authors.initials: F
authors.lastname: Kurtoğlu
authors.forename: Hasan
authors.initials: H
authors.lastname: Akkuş
mesh_terms: D000975:Antioxidants / Q000032:analysis / Q000378:metabolism / Q000502:physiology*; D002374:Catalase / Q000502:physiology; D003402:Creatine Kinase / Q000502:physiology; D005978:Glutathione / Q000097:blood; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D015227:Lipid Peroxidation / Q000502:physiology*; D008297:Male; D008315:Malondialdehyde / Q000097:blood; D010101:Oxygen Consumption / Q000502:physiology; D005082:Physical Exertion / Q000502:physiology*; D012420:Running / Q000502:physiology*; D013482:Superoxide Dismutase / Q000502:physiology; D016138:Walking / Q000502:physiology*; D055815:Young Adult
chemical_list: D000975:Antioxidants; D008315:Malondialdehyde; D002374:Catalase; D013482:Superoxide Dismutase; D003402:Creatine Kinase; D005978:Glutathione