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Background and Objectives: Elevated blood lipid levels are correlated with risk of cardiovascular disease, especially in overweight individuals. The beneficial effect of strength training on lipid profile has been well documented. However, the effect of strength training with flow blood restriction has not been established. The purpose of this study was to compare the effect of eight weeks of strength training with and without blood flow restriction on some of the cardiovascular risk factors in overweight females. Methods: In this study, 28 overweight females aged 18 to 24 years were randomly assigned into three groups of blood flow restriction strength training (BFRT), traditional strength training (TRT) and control. Participants in the BFRT group performed eight weeks of strength training three sessions per week at 30% of 1-repetetion maximum, while participants in the TRT group performed the training at 65-80% of 1-repetetion maximum. Cardiovascular variables, systolic blood pressure and diastolic blood pressure were measured before and after the exercise training. Data was analyzed using descriptive statistics, paired t-test and one-way analysis of variance. Results: Triglyceride level decreased significantly in the BFRT (p=0.022) and TRT (p=0.038) groups compared with the control group. Moreover, there were no significant differences in the body mass, waist-to-hip ratio, body mass index, high-density lipoprotein, low-density lipoprotein, and cholesterol levels between the study groups (P≥0.05). Conclusion: Our findings suggest that the BFRT and TRT may not be suitable for preventing or even reversing the physiological changes induced by obesity.

Effects of Resistance Training with and without Blood Flow Restriction on Cardiovascular Risk Factors in Overweight Females