Table 1:

Results from the principal component analysis applied on seven metabolic measures

Metabolic measure	MET1	MET2	MET3
Rate of recovery	−0.24	0.19	0.84
Average ${\dot{M}}_{{\mathrm{O}}_2}$	0.43	0.34	0.14
Metabolic variability	0.38	−0.02	0.44
Routine ${\dot{M}}_{{\mathrm{O}}_2}$	0.45	0.23	0.05
Spontaneous minimal ${\dot{M}}_{{\mathrm{O}}_2}$	0.35	0.52	−0.27
Spontaneous maximal ${\dot{M}}_{{\mathrm{O}}_2}$	0.41	−0.42	0.06
Spontaneous AMS	0.35	−0.59	0.07
Cumulative variance explained	61.6%	79.8%	92.7%

Abbreviations: FL, fork length; FR, fineness ratio; SMR, standard metabolic rate; MMR, maximum metabolic rate; AMS, aerobic metabolic scope; MET1–3, PCA axes representing other metabolic metrics.

The cumulative variance explained by these three axes was 92.7%. Metabolic measures are explained in detail in the text. Abbreviations: AMS, aerobic metabolic scope; and ${\dot{M}}_{{\mathrm{O}}_2}$, metabolic rate.