| Postprandial oxidative stress: influence of sex and exercise training status. | |
| | |
MedLine Citation:
|
PMID: 19915509 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
An individual's sex and exercise training status may influence oxidative stress. No study has compared postprandial oxidative stress in exercise-trained and untrained men and women. PURPOSE: To compare oxidative stress biomarkers and triglycerides (TAG) in 16 trained and 16 untrained men and women after ingestion of a high-fat meal. METHODS: Blood samples were collected before, and at 1, 2, 4, and 6 h after intake of a high-fat meal and analyzed for Trolox-equivalent antioxidant capacity (TEAC), malondialdehyde, hydrogen peroxide, xanthine oxidase activity, protein carbonyls (PC), and TAG. Area under the curve was calculated for each variable. RESULTS: Sex main effects were noted for all variables (P < 0.01), except for PC and TEAC (P > 0.05), with higher values for men compared with women. A training status main effect was noted for TEAC (P = 0.02), with higher values for trained compared with untrained subjects. No interaction effects were noted (P > 0.05). Regression analysis indicated that TAG explained the greatest degree of variability for oxidative stress variables, and premeal TAG best predicted the TAG response to feeding (R(2) = 0.50). CONCLUSIONS: With the exception of TEAC, for which higher values were noted for trained compared with untrained subjects, our findings indicate that sex, not exercise training status, influences postprandial oxidative stress. Specifically, women experience a significantly lower oxidative stress response to feeding compared with men. This seems mediated in part by the TAG response to feeding. |
| | |
Authors:
|
Richard J Bloomer; David E Ferebee; Kelsey H Fisher-Wellman; John C Quindry; Brian K Schilling |
Related Documents
:
|
17462759 - Unique wall motion abnormalities on stress echocardiogram associated with wolff-parkins... 18243359 - The role of the read through variant of acetylcholinesterase in anxiogenic effects of p... 7636769 - Women, anger, and cardiovascular responses to stress. 8350709 - Overtraining in endurance athletes: a brief review. 17258319 - Biomarkers and bioindicators of the health condition of ameca splendens and goodea atri... 16432739 - Estimation of genetic parameters of a dh wheat population grown at different n stress l... 10588589 - Ventilatory assistance improves exercise endurance in stable congestive heart failure. 8875009 - Adjuncts to mechanical ventilation. 8856489 - Differential class iii antiarrhythmic effects of ambasilide and dofetilide at different... |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Medicine and science in sports and exercise Volume: 41 ISSN: 1530-0315 ISO Abbreviation: Med Sci Sports Exerc Publication Date: 2009 Dec |
Date Detail:
|
Created Date: 2009-11-20 Completed Date: 2010-02-18 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 8005433 Medline TA: Med Sci Sports Exerc Country: United States |
Other Details:
|
Languages: eng Pagination: 2111-9 Citation Subset: IM; S |
Affiliation:
|
Department of Health and Sport Sciences, Cardiorespiratory/Metabolic Laboratory, University of Memphis, Memphis, TN 38152, USA. rbloomer@memphis.edu |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adolescent Adult Area Under Curve Biochemical Phenomena Biological Markers / blood Dietary Fats / administration & dosage Exercise / physiology* Female Humans Male Oxidative Stress / physiology* Postprandial Period / physiology* Sex Factors Young Adult |
| Chemical | |
Reg. No./Substance:
|
0/Biological Markers; 0/Dietary Fats |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Metabolic myopathies: functional evaluation by analysis of oxygen uptake kinetics.
Next Document: Metabolic Syndrome and Insulin Resistance in Division 1 Collegiate Football Players.