...Enrico L. Rezende; Kimberly A. Hammond; Mark A. Chappell SUMMARY We studied metabolic and organ mass responses to thermal acclimation (7 weeks at 5°C or 23°C) in deer mice, Peromyscus maniculatus . Cold acclimation resulted in significantly higher maximal oxygen consumption in thermogenesis (V̇ O 2...

... maximal oxygen consumption metabolism Peromyscus maniculatus wheel-running Over the past three decades, exercise and environmental physiologists have painstakingly described the energetics of locomotion in a wide range of animals. In quadrupedal mammals running at near-thermoneutral...

... and treadmill exercise in deer mice, Peromyscus maniculatus . Physiol. Zool. 59 , 473 -481. Hayes, J. P. and Chappell, M. A. ( 1990 ). Individual consistency of maximal oxygen consumption in deer mice. Funct. Ecol. 4 , 495 -503. Hayes, J. P. and Jenkins, S. H. ( 1997 ). Individual variation...

... for mammals, their basal metabolic rate (BMR) and maximal oxygen consumption in exercise( V̇ O 2 max ) and thermogenesis( V̇ O 2 sum )increased as power functions of mass. Age did not affect BMR, but we found abrupt decreases in growth rate, V̇ O 2 max and V̇ O 2 sum at approximately 485 days of age...

... of the evolution of endothermy is explaining the concomitant rise in maintenance metabolic rate with that of maximal oxygen consumption ( Bennett and Ruben, 1979 ). If increased aerobic capacity during activity were the only consideration, it seems that a more satisfactory solution would have been to expand...