... acclimation Muscle performance Muscle efficiency Natural Sciences and Engineering Research Council of Canada http://dx.doi.org/10.13039/501100000038 249926-2011 Muscle contractile performance is critical to many aspects of fish biology, including cardiovascular function, swimming...

...-mail: [email protected] 8 3 2005 © The Company of Biologists Limited 2005 2005 aerobic flight muscle efficiency scaling heart mass avian energetics Aerodynamic considerations of bird flight suggest that, for geometrically similar animals, the biomechanical power required...

..., so that maintaining a constant contraction frequency and work per stroke should result in an increased swimming speed. However, increasing speed causes exponential increases in drag, thereby reducing mechanical versus muscle efficiency. To investigate these competing factors, we have developed...

... with respirometrically measured total power input, we determined that muscle efficiency rises with increasing force production to a maximum of 10 %. This change in efficiency may reflect either increased crossbridge activation or a favorable strain regime during the production of peak forces. Although the change...

... of uphill locomotion and differences in skeletal muscle efficiency. First, the fluctuations in the horizontal (fore–aft) and lateral components of the velocity of the center of mass may increase substantially when E. skiltonianus walks uphill compared with walking on level ground, leading...

...) suggested that a flight muscle efficiency of 20 % for sphingids was consistent with the mechanical power output calculated from aerodynamic models. Ellington (1985) argued, however, that mechanical efficiency of insect flight muscle is closer to 10 % when improved aerodynamic models are used. The present...