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Fig. 3. (A) Rate of oxygen consumption
(
O2) and (B)
respiratory exchange ratio (RER) of ruff sandpipers at rest and during running
at various speeds. The lines indicated were fitted by linear regression on the
exercise values only (A: y=0.64x+54.07; B:
y=0.01x+0.824). Values are means ± S.E.M.;
sample sizes are indicated in parentheses. Significant differences from values
at rest are shown; *P<0.05,
P<0.001.