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Fig. 4. Ratio of values in cold-acclimated/control animals for maximum metabolic
rate (
O2max)
respiratory frequency (f), tidal volume (VT),
minute volume (VMIN) and oxygen extraction (OEE)
throughout acclimation. Ratios were calculated after taking body mass into
account (values were expressed on a per gram basis). The straight horizontal
line represents a 1:1 ratio and the broken vertical line indicates when
cold-acclimation began.