Adele R. Weston of the University of Sydney in Australia found that black runners need less oxygen than white runners, and the utilization rate of oxygen is higher. The reasons are not clear, which may include differences in heredity, training or athletes' motivation. These athletes are well-trained, and the result of the 10,000-meter race is 29 to 37 minutes. The researchers measured their oxygen utilization rate and proportion through two treadmill tests, and then collected blood samples. After adjusting the weight difference, the difference of peak oxygen uptake between black and white athletes is 13%, and black athletes need less oxygen than white athletes when running at the same speed. In addition, in the 65438+100000 meter race, the endurance intensity of black athletes is higher than that of whites, and their utilization rate of inhaled oxygen is higher, about 92% to 86%. This better "energy supply system" enables black athletes to achieve the same results with less oxygen intake. These findings provide a way to "train" successful long-distance runners in the future.