| Keywords |
Hyperlipidemic rats ; Lipid profile ; Exercise load ; Exercise duration |
| Abstract |
The purpose of the present investigation was to evaluate the effects of swimming on response of serum lipid components of hyperlipidemic rats. Twenty-five male Spraue-Dawley(SD) rats (6 weeks old) were randomly divided into control group and 4 swimming groups after hyperlipidemia induction for 4 weeks 1% cholesterol diet, and then swimming groups swam for 6 weeks (7days/week) divided into 30 min. unloaded swimming group, 30 min. loaded swimming group, 60 min. unloaded swimming group and 60 min. loaded swimming group by swimming duration and intensity. The loaded swimming group rats among swimming groups swam a lead weight equivalent to 5% of body weight attached to the base of the tail. Analytical items were serum lipid components (total cholesterol (TC), triglyceride (TG), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), very lowdensity lipoprotein cholesterol (VLDL-C) and TC/HDL-C ratio). All data were expressed as mean and standard deviation by using SPSS/PC+ program, and data were analyzed by Kruskal-Wallis (K) and Mann-Whitney U test (α=.05) was performed to test the significant levels of differences between groups. The conclusions obtained from this study were as follows; 1) In generally, swimming groups were significantly lower than control group in TC, TG, LDL-C, VLDL-C and TC/HDL-C ratio (p＜.001). 2) In HDL-C, 30 min. loaded swimming group and 60 min. unloaded swimming group were significantly higher than control group, 30 min. unloaded swimming group and 60 min. loaded swimming group (p＜.01). In conclusion, this study suggested that regular swimming is effectively enhanced partly on serum lipid profiles in hyperlipidemic state by exercise intensity and duration. |