Patterns of fuel use during locomotion in mammals revisited: the importance of aerobic scope

Fuel selection patterns during exercise are thought to be conserved among sea-level native mammals when intensity is expressed relative to maximum aerobic capacity (V̇(O₂,max)). However, this claim is based on data from only a few species larger than rats, and has never been tested statistically. Thus, we investigated fuel use in a small mammal (Mus musculus, CD-1 strain), and combined these data with published data on rats, dogs, goats and …