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J Exp Biol (2020) 223 (23): jeb228882.
Published: 07 December 2020
...Vladimir A. Vityazev; Jan E. Azarov ABSTRACT The activation sequence of the ventricular myocardium in ectotherms is a matter of debate. We studied the correlation between the ventricular activation sequence and the pattern of local stretches in 13 toads ( Bufo bufo ). Epicardial potential mapping...
Includes: Supplementary data
In collection:Comparative biomechanics of movement
J Exp Biol (2020) 223 (2): jeb197038.
Published: 27 January 2020
... ascending limb and plateau of the force–length relationship, recent evidence suggests that activation increases titin stiffness. To test the hypothesis that titin plays a role in force enhancement and depression, we investigated isovelocity stretching and shortening in active and passive wild-type and mdm...
J Exp Biol (2008) 211 (20): 3266–3271.
Published: 15 October 2008
... 2008 © The Company of Biologists Limited 2008 2008 moment arm tendon elastic energy strain stretch long distance runner oxygen uptake Running economy is defined as the amount of metabolic energy needed to displace a unit of body mass over a certain distance or, equivalently...
J Exp Biol (2007) 210 (16): 2843–2850.
Published: 15 August 2007
...Michelle Trinh; Douglas A. Syme SUMMARY Applying a small stretch to active muscle immediately before shortening results in an increase in force and work done during subsequent shortening. The basis of the increase is not fully understood, having important implications for work and efficiency, and...
J Exp Biol (2004) 207 (26): 4505–4513.
Published: 15 December 2004
...Yoshiki Ishii; Takashi Watari; Teizo Tsuchiya SUMMARY We investigated the mechanism of the enhancement of twitch force by stretch and the effects of temperature on it in nerve-skeletal muscle preparations of whole iliofibularis muscles isolated from the frog Rana brevipoda . When a preparation was...
J Exp Biol (2004) 207 (14): 2497–2505.
Published: 15 June 2004
... preconditioning are not additive in this population of trout, and strongly suggests that the relationship between hypoxic adaptation and preconditioning in fishes resembles that of the neonatal/immature, not adult, mammalian heart. Further, our results (1) indicate that stretch (volume loading) and chronic...