Document Detail


The effect of a single bout of brisk walking on postprandial lipemia in normolipidemic young adults.
MedLine Citation:
PMID:  8028506     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The purpose of this study was to examine the effect of one bout of low-intensity exercise on the lipemic response to a high-fat meal. Twelve (six women, six men) normolipidemic adults aged 25.8 +/- 1.2 years (mean +/- SEM) took part in two trials. In the exercise trial, subjects walked for 2 hours on a treadmill at 30.9% +/- 1.6% of maximal oxygen uptake (VO2 max) 15 hours before ingestion of the test meal. In the control trial, subjects rested the day before the test meal. After a 12-hour fast, blood samples were obtained by venous cannulation before ingestion and hourly after ingestion for 6 hours. Serum was analyzed for triacylglycerol (TG), total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C) and HDL2-C, apolipoproteins (apos) A-I and B, free fatty acids (FFA), free glycerol, glucose, and insulin. TG values were corrected for free glycerol. Fasting serum TG and peak TG concentrations were lower (Wilcoxon, P < .05) for the exercise trial than for the control trial (0.74 +/- 0.03 v 0.92 +/- 0.08 and 1.98 +/- 0.18 v 2.59 +/- 0.32 mmol.L-1, respectively). The total lipemic response (area under the TG/time curve, normalized to the 0-hour level) was 31% +/- 7% lower in the exercise trial (4.28 +/- 0.66 v 6.46 +/- 1.08 mmol.L-1.h, P < .01). No differences were found between trials in the other parameters. These results show that a single bout of low-intensity exercise reduces the extent of postprandial lipemia in normolipidemic young adults. One possible mechanism is enhanced lipoprotein lipase (LPL) activity in the exercised skeletal muscle.
Authors:
H E Aldred; I C Perry; A E Hardman
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Publication Detail:
Type:  Clinical Trial; Controlled Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Metabolism: clinical and experimental     Volume:  43     ISSN:  0026-0495     ISO Abbreviation:  Metab. Clin. Exp.     Publication Date:  1994 Jul 
Date Detail:
Created Date:  1994-08-10     Completed Date:  1994-08-10     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0375267     Medline TA:  Metabolism     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  836-41     Citation Subset:  IM    
Affiliation:
Department of Physical Education, Sports Science and Recreation Management, Loughborough University, Leicestershire, England.
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MeSH Terms
Descriptor/Qualifier:
Adult
Blood Glucose / metabolism
Cholesterol, HDL / blood
Eating*
Fatty Acids, Nonesterified / blood
Female
Humans
Lipids / blood*
Male
Osmolar Concentration
Reference Values
Time Factors
Triglycerides / blood
Walking*
Chemical
Reg. No./Substance:
0/Blood Glucose; 0/Cholesterol, HDL; 0/Fatty Acids, Nonesterified; 0/Lipids; 0/Triglycerides

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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