Lipid and lipoprotein changes in women following 6 months of exercise training in a worksite fitness program.
It was the purpose of this investigation to examine the influence of a worksite aerobic training program on serum lipid and lipoproteins and cardiovascular fitness in female employees. Thirty-seven healthy but previously untrained, female employees (Ss) from Westinghouse Corporation, (College Station, Texas) volunteered for the study. Ss were randomly assigned to either an exercise group (Ex) (n = 20) or control group (C) (n = 17). Prior to training (PRE) and following training (POST), all Ss were measured for weight (WT), body composition (%FAT) and tested for maximal oxygen consumption (VO2 max). PRE and POST Lipid analysis included: total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), very low-density lipoprotein cholesterol (VLDL-C), and triglycerides (TG). Following PRE testing, the Ex group aerobically trained by walking, jogging and/or cycling, at least 3 days per wk for 24 wks. Exercise training resulted in an improvement in VO2 max (p < 0.0006) and a 2 kg WT loss in Ex (p < 0.025) with no change in C. Both Ex and C Ss exhibited a loss in %-FAT (p < 0.0001), and a decrease in TC (p < 0.0001) and LDL-C (p < 0.0001). No differences were observed between groups or over the training period for VLDL-C or TG. Although HDL-C increased 6 mg/dl in the Ex group but not in C, this difference did not reach statistical significance (p < 0.0625). These results demonstrate that aerobic training by females in a worksite fitness program significantly improves cardiovascular fitness without altering lipids or lipoproteins.
Grandjean
P W
PW
Department of Health and Kinesiology, Applied Exercise Science Laboratory Texas A&M University, College Station 77843-4243, USA.
Oden
G L
GL
Crouse
S F
SF
Brown
J A
JA
Green
J S
JS
D015444:Exercise / Q000502:physiology*; D005260:Female; D006801:Humans; D008055:Lipids / Q000097:blood*; D008074:Lipoproteins / Q000097:blood*; D016272:Occupational Health; D010809:Physical Fitness; D017132:Workplace
D008055:Lipids; D008074:Lipoproteins