Most Effective Exercise Load for Burning Body Fat with Aerobic Exercise in Young Japanese Women

摘要

Physical exercise is important for limiting fat mass and preventing obesity. Aerobic exercise after breakfast is effective in helping to maintain lipid consumption. Study subjects were 18 young Japanese women who did not exercise regularly. They then engaged in 30 min of aerobic exercise with loads that were equivalent to 25%, 40%, 55%, 70%, and 25% of the maximum heart rate in sequential 6-minute intervals. Respiratory metabolism and heart rate were measured with a bicycle ergometer. The amount of energy, lipid, and carbohydrate consumed were calculated from respiratory quotients. Energy/carbohydrate consumptions and relative heart rates increased significantly compared with the resting control, which increased linearly as exercise load increased. However. lipid consumption was not different across exercise loads. Our findings show that aerobic exercise at a level to increase relative heart rate by 25% to 70% is effective in reducing body fat in women who do not exercise regularly.