Abstract
This study aimed to compare the time-course effects of four different intensities of strength exercise (bench press) bouts on the blood lipid profile. Thirty-five Brazilian Army male soldiers were allocated randomly into five groups based at different percentages of one repetition maximum, in previous test (1-RM): 50%-1RM, 75%-1RM, 90%-1RM, 110%-1RM (this executing only eccentric phase), and control group. The total volume (sets x reps x load) of the exercise was equalized. The lipid profile (Triglycerides, VLDL, HDL-cholesterol, LDL-cholesterol, HDL-c/Total Cholesterol ratio and Total cholesterol) was determined at rest and after 1, 24, 48 and 72 h of the strength exercise. The 75% group demonstrated greater TG and VLDL reduction when compared with the other groups (p<0.05). Additionally, the 110% group presented an increased TG and VLDL concentration when compared with the control, 50% and 75% groups (p<0.05). HDL-c concentration was significantly greater after strength exercise at 50% and 75% when compared with 110% (p<0.05). Accordingly, the 50% and control groups had greater HDL-c concentration than 110% group after 48 h and 72 h (p<0.05). Finally, The 50% group showed lesser LDL-c concentration than 110% group after 24 h (p<0.05). No significant differences were found in Total Cholesterol and HDL-c/Total cholesterol ratio concentration. Results indicate that acute strength exercise changes lipid profile in a specific-intensity manner. Overall, low and moderate exercise intensities appear to promote more benefits on lipid profile than high intensity. Long term studies should confirm these findings.
Recommended Citation
Lira, Fábio Santos; Yamashita, Alex Shimura; Uchida, Marco Carlos; and Zanchi, Nelo Eidy
(2012)
"Low and moderate intensity strength exercise affects more beneficially the lipid profile than high intensity strength exercise,"
International Journal of Exercise Science: Conference Proceedings: Vol. 1:
Iss.
1, Article 56.
Available at:
https://digitalcommons.wku.edu/ijesab/vol1/iss1/56