Acute Effects of Moderate-Intensity Exercise on Plasma Free Fatty Acid Levels in Normal-Weight Women
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Objective: Physical activity supports metabolic health by enhancing energy metabolism, including lipolysis—the breakdown of fat stores into glycerol and free fatty acids. However, the impact of moderate-intensity ergocycle and circuit body weight training (CBWT) on FFA concentrations in adolescent women remains unclear. This study aimed to assess moderate-intensity ergocycle training and CBWT against free fatty acid concentrations on the process of lipolysis.
Methods and Materials: This study was to quasi experiment pretest-posttest group design. The subject of this study whose the 26 women aged 18- 23 years, divided into two groups randomly so that each group made up of 13 people. The first group (K1) was an ergocycle training and the second group (K2) was an exercise CBWT. Blood sampling was performed at baseline (pre) and 5 minutes post-exercise. ELISA was applied to evaluate the concentration of free fatty acids in all samples. Statistical analysis was applied using paired sample t-test and independent sample t-test with a significance level of 5%.
Findings: Resultsn showed that the concentration of free fatty acids in K1 between pre and post (0.054±0.002 to 0.057±0.004 mmol/L, p=0.012, effect size (ES): 0.949). In K2 (0.056±0.003 to 0.065±0.007 mmol/L, p=0.001, ES: 1.671). We also observed differences between groups (p < 0.001, ES: 1.403).
Conclusion: Both exercise models have been shown to improve free fatty acid concentrations. However, the CBWT model was found to be more effective than ergocycle in improving free fatty acid concentrations in normal-weight women.
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