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Figure 1


Fig. 1. Aerobic performance in relation to body mass in Mongolian gerbils. The upper and lower limits to oxygen consumption are shown (filled triangles; basal metabolic rate, BMR over 10 min, and filled circles; maximal oxygen consumption during forced exercise, Formula 1O2max over 1 min, respectively), along with two measures of aerobic performance during voluntary activity: average daily metabolic rate (open squares; ADMR, the 24-h average of oxygen consumption) and the highest 1 min average of voluntarily attained Formula 1O2 (open circles; Formula 1O2max1).