linguistic:translation
Metabolism

Based on an average mass of 63 kg (139 lb) for males and 52.3 kg (115 lb) for females, the daily energy expenditure (DEE)—the amount of calories metabolized in one day—was estimated to be about 2271.8 and 1909.5 kcal, respectively. This is similar to that of earlier Homo, despite a marked increase in activity and migratory capacity, likely because the longer legs of H. erectus were more energy-efficient in long-distance movement. Nonetheless, the estimate for H. erectus females is 84% higher than that for Australopithecus females, possibly due to an increased body size and a decreased growth rate. A 2011 study, assuming high energy or dietary fat requirements based on the abundance of large game animals at H. erectus sites, calculated a DEE of 2,700–3,400 kcal of which 27–44% derived from fat, and 44–62% of the fat from animal sources. In comparison, modern humans with a similar activity level have a DEE of 2,450 calories, of which 33% derives from fat, and 49% of the fat from animals.