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Keywords: aerobic capacity
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Journal Articles
J Exp Biol (2020) 223 (24): jeb229013.
Published: 23 December 2020
... species of lizards, helodermatids, varanids and skinks (which are mainly active foragers) have relatively high maximal aerobic capacity during forced exercise ( V̇ O 2 ,max V̇ O 2 ,max ), whereas viviparous species have relatively low V̇ O 2 ,max V̇ O 2 ,max . Aerobic capacity Allometry...
Journal Articles
J Exp Biol (2018) 221 (22): jeb191056.
Published: 14 November 2018
...Kang Nian Yap; Morag F. Dick; Christopher G. Guglielmo; Tony D. Williams ABSTRACT Despite widely held assumptions that hematocrit (Hct) is a key determinant of aerobic capacity and exercise performance, this relationship has not often been tested rigorously in birds and results to date are mixed...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (4): jeb172643.
Published: 14 February 2018
... multiple stressors (such as salinity stress and wave action) on bioenergetics and burrowing performance of marine bioturbators are not well understood. We investigated the effects of mechanical disturbance and salinity stress on the burrowing behavior, aerobic capacity and energy expense of digging in a...
Journal Articles
J Exp Biol (2016) 219 (4): 470–473.
Published: 15 February 2016
... characteristics remain unaffected. Myodes glareolus Aerobic capacity Artificial selection Fibre types Gastrocnemius Locomotor performance The maximum rate of aerobic exercise metabolism is a trait of special interest from both medical and evolutionary–comparative perspectives, because it is...
Includes: Supplementary data
Journal Articles
J Exp Biol (2014) 217 (18): 3193–3196.
Published: 15 September 2014
...Marie-Pierre Schippers; Christophe M. R. LeMoine; Grant B. McClelland Fuel selection patterns during exercise are thought to be conserved among sea-level native mammals when intensity is expressed relative to maximum aerobic capacity ( ). However, this claim is based on data from only a few species...
Journal Articles
J Exp Biol (2014) 217 (10): 1642–1648.
Published: 15 May 2014
... authors declare no competing financial interests. © 2014. Published by The Company of Biologists Ltd 2014 Thermoregulation Locomotion Metabolism Heat production Aerobic capacity The advantages that have led to the evolution of an endothermic physiology are still under debate. A...
Journal Articles
J Exp Biol (2012) 215 (18): 3207–3217.
Published: 15 September 2012
... aerobic capacity basal metabolic rate bird glucocorticoid metabolic scope peak metabolic rate plasticity songbird standard metabolic rate corticosterone Variation in the prenatal and postnatal environments can lead to long-term variation in adult phenotype, a process often referred to as...
Journal Articles
J Exp Biol (2012) 215 (18): 3223–3230.
Published: 15 September 2012
...Koa N. Webster; Terence J. Dawson SUMMARY We examined the structure–function relationships that underlie the aerobic capacities of marsupial mammals that hop. Marsupials have relatively low basal metabolic rates (BMR) and historically were seen as ‘low energy’ mammals. However, the red kangaroo...
Includes: Supplementary data
Journal Articles
J Exp Biol (2011) 214 (19): 3186–3196.
Published: 01 October 2011
...Mark A. Chappell; Jean-Francois Savard; Jennifer Siani; Seth W. Coleman; Jason Keagy; Gerald Borgia SUMMARY Individual variation in aerobic capacity has been extensively studied, especially with respect to condition, maturity or pathogen infection, and to gain insights into mechanistic foundations...
Journal Articles
J Exp Biol (2009) 212 (17): 2872–2878.
Published: 01 September 2009
...Andrzej K. Gębczyński; Marek Konarzewski SUMMARY According to the aerobic capacity model of the evolution of endothermy,high levels of basal/resting metabolic rate (BMR/RMR) underlying endothermy have evolved as a correlated response to selection for high rates of aerobic metabolism ( V O 2 max...
Journal Articles
J Exp Biol (2009) 212 (5): 610–619.
Published: 01 March 2009
... substantial differences in altitude do not necessarily result in differences in aerobic capacity in small mammals and, even if V̇ O 2 ,max is reduced at high altitude, there may be no effect on voluntary running behavior. * Author for correspondence (e-mail: chappell@ucr.edu ) 20 11 2008...
Journal Articles
J Exp Biol (2005) 208 (9): 1635–1644.
Published: 01 May 2005
.... * Author for correspondence (e-mail: hoppeler@ana.unibe.ch ) 17 2 2005 © The Company of Biologists Limited 2005 2005 metabolic rate scaling locomotor muscle aerobic capacity mitochondria capillary fractal design vascular supply network energy demand Maximal metabolic...
Journal Articles
J Exp Biol (2004) 207 (22): 3839–3854.
Published: 15 October 2004
... running time) had high resting metabolism, which suggests a cost of having high capacity or propensity for activity. * Author for correspondence (e-mail: chappell@citrus.ucr.edu ) 26 7 2004 © The Company of Biologists Limited 2004 2004 aerobic capacity deer mouse exercise...
Journal Articles
J Exp Biol (2004) 207 (16): 2811–2821.
Published: 15 July 2004
... past the marsupials were considered to be metabolically `primitive', the red kangaroo Macropus rufus has been reported to have an aerobic capacity ( V̇ O 2 max )comparable to that of the most `athletic' of placentals such as dogs. However,kangaroos travel at moderate speeds with lower relative cost...
Journal Articles
J Exp Biol (2003) 206 (20): 3707–3718.
Published: 15 October 2003
...Jason P. Odell; Mark A. Chappell; Kathryn A. Dickson SUMMARY We examined the mechanistic basis for two whole-animal performance traits,aerobic capacity and burst speed, in six laboratory-reared Trinidadian guppy populations from different native drainages with contrasting levels of predation. Using...
Journal Articles
J Exp Biol (2003) 206 (16): 2845–2857.
Published: 15 August 2003
... other actively swimming shark species. The metabolic enzymes measured were citrate synthase(CS), an index of aerobic capacity, and lactate dehydrogenase (LDH), an index of anaerobic capacity. WM creatine phosphokinase (CPK) activity, an index of rapid ATP production during burst swimming, was also...
Journal Articles
J Exp Biol (2003) 206 (16): 2831–2843.
Published: 15 August 2003
...; however, lamnid RM aerobic capacity appears to be less than that of tuna RM. How might these various RM positions relate to the locomotion and biology of the different species? Assuming the RM–caudal fin linkage of the salmon shark is similar to that of the mako, a shorter RM section requires a longer...
Journal Articles
J Exp Biol (2003) 206 (7): 1221–1231.
Published: 01 April 2003
... aerobic performance: basal metabolism(BMR), maximum aerobic capacity in exercise( V̇ O 2 max) and thermogenesis( V̇ O 2 sum ), and ventilatory traits that support the initial stages of oxygen uptake. We also explore age-related changes in body size, composition and organ mass, in order to put our data on...
Journal Articles
J Exp Biol (2002) 205 (23): 3601–3608.
Published: 01 December 2002
... aerobic capacities that are similar to those of atheltic terrestrial mammals. The purpose of the present study was to assess the aerobic capacity of skeletal muscles from long-duration divers. Swimming and non-swimming muscles were collected from adult Weddell seals, Leptonychotes weddelli , and processed...
Journal Articles
J Exp Biol (2002) 205 (20): 3207–3214.
Published: 15 October 2002
...Patrice Boily SUMMARY A fundamental assumption of the aerobic capacity model for the evolution of endothermy is that basal (BMR) and peak (PMR) metabolic rates are functionally linked at the intraspecific level. The purpose of this study was to use the nine-banded armadillo Dasypus novemcinctus as...