Fig. 5. Relationship between postprandial heart rate (beats min^–1) and rate of oxygen consumption (ml O₂ h^–1 kg^–0.60) as determined in a male Steller sea lion after a bulk feed of 6 kg (open squares) or 12 kg (filled squares). Data points, consisting of mean fH and _O2 values at 5 min intervals, were collected between 30 min and 4 h after feeding. The regression equation for the pooled feeding data is _O2=(29.7fH±4.0)+(2136.6±320.5), r²=0.20, P<0.01. The fasting regression line (_O2=(71.3fH–4.3)–(1138.5–369.6), r²=0.69, P=<0.01) is shown for comparison.

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