Is acute supramaximal exercise capable of modulating lipoprotein profile in healthy men?
BACKGROUND
This study examined the effects of acute supramaximal exercise (approximately 115% VO(2max)) on the blood lipid profile for three different carbohydrate (CHO) storage levels (control, low and high).


METHODS
Six male subjects were randomly divided into three different groups: control, low CHO and high CHO. These groups differed in the diet to which the subjects were submitted before each exercise session. The lipid profile [triglycerides (TG), very low-density lipoprotein (VLDL), high-density lipoprotein (HDL)-cholesterol, low-density lipoprotein (LDL)-cholesterol, TG/HDL-C ratio and total cholesterol) was determined at rest, immediately after exercise and 1 h after exercise bouts.


RESULTS
The time to exhaustion was lower in the low CHO condition compared with the control and high CHO condition (3.59 +/- 0.72; 2.91 +/- 0.56; and 4.26 +/- 0.69 min; P < 0.05). The energy expenditure (control: 251.1 +/- 56.0 kJ; low CHO: 215.2 +/- 28.6 kJ; and high CHO: 310.4 +/- 64.9 kJ) was significantly different between the low and high CHO conditions (P < 0.05). There were no significant changes in the lipid profile for any of the experimental conditions (control, low and high; P < 0.05). Glucose and insulin levels did not show time-dependent changes in any of the conditions (P > 0.05).


CONCLUSIONS
These results indicate that a supramaximal exercise session has no significant effects on lipid metabolism.
Lira
Fabio Santos
FS
Institute of Biomedical Sciences, Department of Cell and Developmental Biology, University of São Paulo, Brazil. fabioslira@gmail.com
Zanchi
Nelo Eidy
NE
Lima-Silva
Adriano Eduardo
AE
Pires
Flávio Oliveira
FO
Bertuzzi
Rômulo Cássio
RC
Caperuto
Erico Chagas
EC
Kiss
Maria Augusta
MA
Seelaender
Marília
M
Santos
Ronaldo Vagner
RV
D000328:Adult; D050260:Carbohydrate Metabolism / Q000502:physiology*; D004734:Energy Metabolism / Q000502:physiology; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test; D006801:Humans; D050356:Lipid Metabolism / Q000502:physiology*; D008074:Lipoproteins / Q000097:blood*; D008297:Male; D005082:Physical Exertion / Q000502:physiology*
D008074:Lipoproteins