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Fig. 3. Ventilation (V.E) and air convection requirement (V.E/V.O2, where V.O2 is the rate of oxygen uptake) during rest and treadmill exercise in fasting and postprandial lizards. Circles, mean fasting; squares, 24h mean postprandial. Values are means ±1 S.E.M. (N=5); lines are least squares linear regressions (V.E fasting r2=0.84, P<0.001; V.E postprandial r2=0.86, P<0.001; V.E/V.O2 fasting r2=0.33, P<0.01; V.E/V.O2 postprandial r2=0.23, P<0.03).