| Effects of exercise at different times on postprandial lipemia and endothelial function. | |
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MedLine Citation:
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PMID: 18202576 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: The purpose of this study was to examine the effects of previous exercise on metabolic, hormonal, and endothelial responses to an oral fat-tolerance test (OFTT). METHODS: Twelve healthy, recreationally trained men (age = 22.3 +/- 2.5 yr, weight = 80.7 +/- 12.4 kg, BMI = 25.1 +/- 3.1 kg.m(-2)) volunteered for this study. In a crossover fashion, subjects completed three OFTT trials that involved no exercise (NoEx) or exercise performed 16 h (EX-16) or 4 h (EX-4) before the ingestion of a meal (13 kcal.kg(-1) and 1.4 g of fat per kilogram of body weight). Blood was collected before and after the meal and hourly for 6 h. Brachial artery reactivity was measured using ultrasound before and at 2, 4, and 6 h after the meal. Dietary intake and exercise were standardized 4 d before the OFTT. The exercise session consisted of six resistance exercises and 30 min of running on a treadmill. The washout period between trials was, on average, 5 d. RESULTS: Compared with NoEx, there were significant (P < 0.05) decreases in triglyceride area under the curve (AUC) during EX-16 (-26%) and EX-4 (-15%). Compared with NoEx, there were decreases in insulin AUC during EX-16 (-7%, P < 0.05) and EX-4 (-5%, NS). EX-4 resulted in a significantly larger fasting arterial diameter than EX-16 and NoEx, but there were no other significant effects on endothelial function. Lipemic variables did not show correlations with endothelium function for any of the trials. CONCLUSION: An acute exercise session, regardless of the time point chosen (i.e., EX-16 or EX-4), reduced to a similar extent the total and incremental lipemic responses compared with the NoEx condition. |
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Authors:
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Ricardo Silvestre; William J Kraemer; Erin E Quann; Richard L Seip; Carl M Maresh; Jakob L Vingren; Disa L Hatfield; Jeff S Volek |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Medicine and science in sports and exercise Volume: 40 ISSN: 0195-9131 ISO Abbreviation: Med Sci Sports Exerc Publication Date: 2008 Feb |
Date Detail:
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Created Date: 2008-01-22 Completed Date: 2008-04-15 Revised Date: 2009-04-16 |
Medline Journal Info:
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Nlm Unique ID: 8005433 Medline TA: Med Sci Sports Exerc Country: United States |
Other Details:
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Languages: eng Pagination: 264-74 Citation Subset: IM; S |
Affiliation:
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Human Performance Laboratory, Department of Kinesiology, University of Connecticut, Storrs, CT 06269, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Administration, Oral Adult Brachial Artery / physiology, ultrasonography Cardiovascular Diseases / prevention & control Connecticut Cross-Over Studies Dietary Fats / administration & dosage Endothelium / physiology* Exercise / physiology* Humans Hyperlipidemias / blood, metabolism* Male Postprandial Period / physiology* Time Factors |
| Chemical | |
Reg. No./Substance:
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0/Dietary Fats |
| Comments/Corrections | |
Comment In:
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Med Sci Sports Exerc. 2008 Jul;40(7):1353; author reply 1354
[PMID:
18580417
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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