Scaling of work and power in a locomotor muscle of a frog

Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
Jeffrey P Olberding, Stephen M Deban

Abstract

Muscle work and power are important determinants of movement performance in animals. How these muscle properties scale determines, in part, the scaling of performance during movements, such as jump height or distance. Muscle-mass-specific work is predicted to remain constant across a range of scales, assuming geometric similarity, while muscle-mass-specific power is expected to decrease with increasing scale. We tested these predictions by examining muscle morphology and contractile properties of plantaris muscles from frogs ranging in mass from 1.28 to 20.60 g. Scaling of muscle work and power was examined using both linear regression on log10-transformed data (LR) and non-linear regressions on untransformed data (NLR). Results depended on the method of regression not because of large changes in scaling slopes, but because of changing levels of statistical significance using corrections for multiple tests, demonstrating the importance of careful consideration of statistical methods when analyzing patterns of scaling. In LR, muscle-mass-specific work decreased with increasing scale, but an accompanying positive allometry of muscle mass predicts constant movement performance at all scales. These relationships were non-significan...Continue Reading

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Citations

Aug 14, 2019·Integrative and Comparative Biology·Otto BergUlrike K Müller
Jul 4, 2020·Current Zoology·Gregorio Moreno-RuedaGuillem Pascual
Jul 22, 2021·Journal of Experimental Zoology. Part A, Ecological and Integrative Physiology·Stephen M Deban, Christopher V Anderson
Nov 26, 2021·The Journal of Experimental Biology·Elizabeth Mendoza, Emanuel Azizi

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Methods Mentioned

BETA
dissection
dissecting

Software Mentioned

R
LabVIEW
Excel
pspline
NLR

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