Table 2.

The effect of prolonged inactivity on muscle mass in dormant vertebrates and the relationship with mass-specific metabolic rate

Body-mass-specific metabolic rate (ml g-1 h-1)
Organism% Atrophy (normalised to 80 days)ActiveDormant
Frog (Cyclorana alboguttata)00.0350.015
Black bear (Ursus americanus)00.220.042
Ground squirrel (Spermophilus lateralis)70.750.045
Hamster (Mesocricetus auratus)301.250.07
  • Data from Altman and Dittmer (1972-1974), Geiser and Ruf (1995), Tinker et al. (1998), Hudson and Franklin (2002) and Wickler et al. (1987, 1991).