Document Detail

Effects of acute sprint interval cycling and energy replacement on postprandial lipemia.
MedLine Citation:
PMID:  21852403     Owner:  NLM     Status:  MEDLINE    
High postprandial blood triglyceride (TG) levels increase cardiovascular disease risk. Exercise interventions may be effective in reducing postprandial blood TG. The purpose of this study was to determine the effects of sprint interval cycling (SIC), with and without replacement of the energy deficit, on postprandial lipemia. In a repeated-measures crossover design, six men and six women participated in three trials, each taking place over 2 days. On the evening of the first day of each trial, the participants either did SIC without replacing the energy deficit (Ex-Def), did SIC and replaced the energy deficit (Ex-Bal), or did not exercise (control). SIC was performed on a cycle ergometer and involved four 30-s all-out sprints with 4-min active recovery. In the morning of day 2, responses to a high-fat meal were measured. Venous blood samples were collected in the fasted state and at 0, 30, 60, 120, and 180 min postprandial. There was a trend toward a reduction with treatment in fasting TG (P = 0.068), but no significant treatment effect for fasting insulin, glucose, nonesterified fatty acids, or betahydroxybutryrate (P > 0.05). The postprandial area under the curve (mmol·l(-1)·3 h(-1)) TG response was significantly lower in Ex-Def (21%, P = 0.006) and Ex-Bal (10%, P = 0.044) than in control, and significantly lower in Ex-Def (12%, P = 0.032) than in Ex-Bal. There was no treatment effect (P > 0.05) observed for area under the curve responses of insulin, glucose, nonesterified fatty acids, or betahydroxybutryrate. SIC reduces postprandial lipemia, but the energy deficit alone does not fully explain the decrease observed.
Eric C Freese; Ari S Levine; Donald P Chapman; Dorothy B Hausman; Kirk J Cureton
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Publication Detail:
Type:  Clinical Trial; Controlled Clinical Trial; Journal Article     Date:  2011-08-18
Journal Detail:
Title:  Journal of applied physiology (Bethesda, Md. : 1985)     Volume:  111     ISSN:  1522-1601     ISO Abbreviation:  J. Appl. Physiol.     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-12-14     Completed Date:  2012-04-30     Revised Date:  2013-09-26    
Medline Journal Info:
Nlm Unique ID:  8502536     Medline TA:  J Appl Physiol (1985)     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1584-9     Citation Subset:  IM    
Metabolism and Body Composition Laboratory, Department of Kinesiology, University of Georgia, Athens, Georgia 30602-6554, USA.
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MeSH Terms
Bicycling / physiology
Cross-Over Studies
Diet, High-Fat / adverse effects
Energy Intake
Energy Metabolism
Exercise / physiology*
Exercise Test
Hyperlipidemias / blood*
Postprandial Period / physiology*
Triglycerides / blood
Young Adult
Reg. No./Substance:

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