King Grub
2010-05-25, 10:18
BACKGROUND: The effects of chronic aerobic exercise upon lipid profile has been previously demonstrated, but few studies showed this effect under resistance exercise conditions.
OBJECTIVE: The aim of this study was to examine the effects of different resistance exercise loads on blood lipids.
METHODS: Thirty healthy, untrained male volunteers were allocated randomly into four groups based at different percentages of one repetition maximum (1RM); 50%-1RM, 75%-1RM, 90%-1RM, and 110%-1RM. The total volume (sets x reps x load) of the exercise was equalized. The lipid profile (Triglycerides [TG], HDL-cholesterol [HDL-c], LDL-cholesterol, and Total cholesterol) was determined at rest and after 1, 24, 48 and 72 h of resistance exercise.
RESULTS: The 75%-1RM group demonstrated greater TG reduction when compared to other groups (p < 0.05). Additionally, the 110%-1RM group presented an increased TG concentration when compared to 50% and 75% groups (p = 0.01, p = 0.01, respectively). HDL-c concentration was significantly greater after resistance exercise in 50%-1RM and 75%-1RM when compared to 110%-1RM group (p = 0.004 and p = 0.03, respectively). Accordingly, the 50%-1RM group had greater HDL-c concentration than 110%-1RM group after 48 h (p = 0.05) and 72 h (p = 0.004), respectively. Finally, The 50% group has showed lesser LDL-c concentration than 110% group after 24 h (p = 0.007). No significant difference was found in Total Cholesterol concentrations.
CONCLUSION: These results indicate that the acute resistance exercise may induce changes in lipid profile in a specific-intensity manner. Overall, low and moderate exercise intensities appear to be promoting more benefits on lipid profile than high intensity. Long term studies should confirm these findings.
Diabetol Metab Syndr. 2010 May 21;2(1):31. Low and moderate, rather than high intensity strength exercise induces benefit regarding plasma lipid profile.
OBJECTIVE: The aim of this study was to examine the effects of different resistance exercise loads on blood lipids.
METHODS: Thirty healthy, untrained male volunteers were allocated randomly into four groups based at different percentages of one repetition maximum (1RM); 50%-1RM, 75%-1RM, 90%-1RM, and 110%-1RM. The total volume (sets x reps x load) of the exercise was equalized. The lipid profile (Triglycerides [TG], HDL-cholesterol [HDL-c], LDL-cholesterol, and Total cholesterol) was determined at rest and after 1, 24, 48 and 72 h of resistance exercise.
RESULTS: The 75%-1RM group demonstrated greater TG reduction when compared to other groups (p < 0.05). Additionally, the 110%-1RM group presented an increased TG concentration when compared to 50% and 75% groups (p = 0.01, p = 0.01, respectively). HDL-c concentration was significantly greater after resistance exercise in 50%-1RM and 75%-1RM when compared to 110%-1RM group (p = 0.004 and p = 0.03, respectively). Accordingly, the 50%-1RM group had greater HDL-c concentration than 110%-1RM group after 48 h (p = 0.05) and 72 h (p = 0.004), respectively. Finally, The 50% group has showed lesser LDL-c concentration than 110% group after 24 h (p = 0.007). No significant difference was found in Total Cholesterol concentrations.
CONCLUSION: These results indicate that the acute resistance exercise may induce changes in lipid profile in a specific-intensity manner. Overall, low and moderate exercise intensities appear to be promoting more benefits on lipid profile than high intensity. Long term studies should confirm these findings.
Diabetol Metab Syndr. 2010 May 21;2(1):31. Low and moderate, rather than high intensity strength exercise induces benefit regarding plasma lipid profile.