Acute and additive changes in blood lipids with consecutive days of exercise

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Authors
Hazekamp, Audrey Ann
Advisor
Issue Date
1992
Keyword
Degree
Thesis (M.A.)
Department
School of Physical Education
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Abstract

The purpose of this study was to measure and describe the acute the additive changes in blood lipid entities that occur following consecutive days of moderate exercise, and determine whether exercise restrictions are necessary prior to a blood lipid screening. Ten healthy male (n=6) and female (n=4) volunteers were selected to participate in a series of blood tests prior to, and following several consecutive days of moderate exercise (between 70-80% of heart rate reserve). From each blood sample, total cholesterol (TC), and triglyceride (TG) concentrations were analyzed using the Boehringer-Mannheim Reflotron. High density lipoprotein (HDL-C) was determined using the Sigma Diagnostics Kit No. 352-3. Low density lipoprotein (LDL-C) was calculated using the Friedewald equation. Comparisons of the blood lipid and lipoprotein concentrations across sample collection were made using an analysis of variance with repeated measures. There were significant elevations in TC, IDL-C, and TG immediately post exercise. No significant changes were observed between the pre-exercise values across trials. These results may have been confounded due to changes in plasma volume, lack of compliance with pre-trial guidelines, and intra-individual variations in plasma lipids and lipoproteins. These data suggest that when screening for baseline plasma lipid values, exercise restriction for the period immediately prior to the sample collection are prudent. No restrictions beyond this time period can be presented from these data.

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