4. Discussion
The objective of this study was to examine the effects of the intake of STGs (interesterified structured lipids EPA and MCTs) for 8 weeks on cardiorespiratory endurance in sedentary men compared with the intake of a PM of EPA and MCTs. We found that increases in TTE in the VOThe consumption of STGs extended the time to reach AT, suggesting the possibility that lipid utilization was enhanced, while carbohydrate utilization was conserved during low-intensity exercise. Indeed, a previous study reported increases in lipid oxidation during low-intensity exercise after the intake of MCTs for 2 weeks in sedentary men and women [In this study, VOIn the PM group, the AT was significantly lower after the intervention period than before. Interestingly, in the STG group, there was no difference in AT between before and after the intervention period, despite significant decreases in VOThe TTE in the endurance test was not increased by the supplement intake in either group in this study. TTE in the endurance test after intake of omega-3 fatty acids was examined previously. Nosaka et al. examined 8 active adult athletes (men and women) who consumed MCTs or LCTs for 2 weeks and found that TTE in exercise performed at 80% of VO