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Keywords: Elasticity
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Journal Articles
J Exp Biol (2022) 225 (16): jeb243584.
Published: 16 August 2022
... that during muscle activation, titin binds to actin, which engages the PEVK region of titin, thereby increasing titin stiffness. In this study, we investigated the role of PEVK titin in active muscle stiffness during rapid unloading. We measured elastic recoil of active and passive soleus muscles from Ttn...
Journal Articles
J Exp Biol (2022) 225 (5): jeb242866.
Published: 4 March 2022
... this hypothesis. Strength and elastic (Young's) modulus were similarly lower in sloth limb bones during both compression and bending, as compared with pronograde taxa. Ratios of peak bending strength to compressive strength additionally were elevated (sloths: 1.4–1.7; upright taxa: 0.6–1.2) for sloth limb bones...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (7): jeb211904.
Published: 1 April 2020
..., but mostly isotropic, with collagen and elastin fibers running in all directions. The rorqual TMJ pad compresses as gape increases. Its stiffness is hypothesized to damp acceleration, whereas its elasticity is hypothesized to absorb shock during engulfment, allow for rotation or other jaw motion during gape...
Journal Articles
J Exp Biol (2015) 218 (20): 3276–3283.
Published: 1 October 2015
...Giovanni A. Cavagna; Mario A. Legramandi ABSTRACT A long-lasting challenge in comparative physiology is to understand why the efficiency of the mechanical work done to maintain locomotion increases with body mass. It has been suggested that this is due to a more elastic step in larger animals. Here...
Journal Articles
J Exp Biol (2012) 215 (20): 3552–3558.
Published: 15 October 2012
...Andrew Matson; Nicolai Konow; Samuel Miller; Pernille P. Konow; Thomas J. Roberts SUMMARY The material properties of a tendon affect its ability to store and return elastic energy, resist damage, provide mechanical feedback and amplify or attenuate muscle power. While the structural properties...
Journal Articles
J Exp Biol (2010) 213 (5): 707–714.
Published: 1 March 2010
... calculated as illustrated in Fig. 2 . This method excludes transient thermal changes resulting, for example, from changes in series elastic element length that are reversed when shortening concludes and force returns to isometric levels ( Homsher, 1987 ). Power and efficiency were calculated only during...
Journal Articles
Journal Articles
J Exp Biol (2006) 209 (21): 4379–4388.
Published: 1 November 2006
...G. A. Lichtwark; A. M. Wilson SUMMARY Muscles are required to perform or absorb mechanical work under different conditions. However the ability of a muscle to do this depends on the interaction between its contractile components and its elastic components. In the present study we have used...
Includes: Multimedia, Supplementary data
Journal Articles
J Exp Biol (2005) 208 (24): 4715–4725.
Published: 15 December 2005
.... We aimed to determine the in vivo Achilles tendon (AT) stress and strain during one-legged hopping and hence the contribution of elastic recoil to mechanical energy changes. We simultaneously measured the length of the Achilles tendon from the muscle–tendon junction to the insertion on the calcaneous...
Includes: Multimedia, Supplementary data
Journal Articles
J Exp Biol (2005) 208 (15): 2845–2853.
Published: 1 August 2005
... a cyclical movement (such as locomotion)and the length change of the whole muscle tendon unit (MTU) can also be varied. Architecturally, muscles have a range of fibre lengths, maximum force-producing capabilities and stiffness of the series elastic element(SEE). In the present work we use a model to explore...
Journal Articles
J Exp Biol (2005) 208 (15): 2831–2843.
Published: 1 August 2005
...G. A. Lichtwark; A. M. Wilson SUMMARY The power output of a muscle and its efficiency vary widely under different activation conditions. This is partially due to the complex interaction between the contractile component of a muscle and the serial elasticity. We investigated the relationship between...
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Journal Articles
Journal Articles
J Exp Biol (1999) 202 (3): 253–265.
Published: 1 February 1999
...D. A. Kelly ABSTRACT Artificial inflation of corpora cavernosa from the nine-banded armadillo ( Dasypus novemcinctus ) showed that the expansion of the tunica albuginea during erection increases both components of flexural stiffness: the second moment of area and Young’s modulus of elasticity...
Journal Articles
Journal Articles
J Exp Biol (1996) 199 (8): 1817–1828.
Published: 1 August 1996
... up to approximately 300 % of its initial length. It behaves like a viscoelastic solid, having a long-range elastic component as well as a time-dependent viscous component. Reduction and alkylation of the cysteine residues in the network do not change its breaking strain or strength, but greatly...
Journal Articles
Journal Articles
J Exp Biol (1995) 198 (10): 2185–2196.
Published: 1 October 1995
... in tissue structure. The vessels were compliant at low strains, but demonstrated nonlinear elasticity, increasing in stiffness as strains increased; this property could act as protection against artery wall rupture. The vessels of the lamprey, hagfish and lobster are capable of acting as fairly efficient...
Journal Articles
J Exp Biol (1991) 158 (1): 275–289.
Published: 1 July 1991
... that reflect the lower pressure and simpler haemodynamics of the poikilothermic circulation. The aorta is highly distensible, resilient and non-linearly elastic, giving it the requisite properties to act as an effective storage element in the arterial circulation. An abrupt transition from high compliance (low...
Journal Articles
J Exp Biol (1990) 152 (1): 471–484.
Published: 1 September 1990
...R. E. Shadwick; E. K. Nilsson ABSTRACT The passive mechanical properties of the dorsal aorta and the vena cava of Octopus vulgaris were investigated in vitro . Both vessels are highly distensible structures that exhibit non-linear elasticity, but have substantially different material properties...