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Keywords: mechanical power
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Journal Articles
J Exp Biol (2023) 226 (7): jeb244833.
Published: 5 April 2023
... climbing was predominantly driven by potential energy, with negligible kinetic contributions). Utilizing power as a means of estimating efficiency, we also demonstrate that Australian green tree frogs show total mechanical power costs only slightly above the minimum mechanical power necessary to climb...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (24): jeb191171.
Published: 10 December 2018
... by folding their wings over the body to adopt a ballistic posture. Calypte anna Maximal lift Mechanical power Vertical climbing Ascending flight is commonly used by volant taxa in a diversity of biological contexts, including chases, escapes and mating behavior. Climbing animals must exert...
Includes: Supplementary data
Journal Articles
J Exp Biol (2010) 213 (2): 318–330.
Published: 15 January 2010
...E. F. Hodson-Tole; J. M. Wakeling SUMMARY The ankle extensor muscles of the rat have different mechanical and physiological properties, providing a means of studying how changes in locomotor demands influence muscle fascicle behaviour, force and mechanical power output in different populations...
Journal Articles
J Exp Biol (2007) 210 (19): 3422–3429.
Published: 1 October 2007
..., constituting half of the total pectoral girdle muscle mass,was measured in vitro and used to estimate the muscle mechanical power output during maximal labriform swimming ( P mech ;0.15–0.21 W kg –1 body mass). Respirometry was used to estimate the total metabolic power input ( P total ; 0.95 W kg –1 body mass...
Journal Articles
J Exp Biol (2004) 207 (11): 1925–1939.
Published: 1 May 2004
... measuring mechanical power and efficiency from measured body accelerations and wing kinematics( Pennycuick et al., 2000 ) is generalized and applied to the stickleback data. These measured estimates of power and efficiency are compared to modeled estimates of power and efficiency computed from the blade...
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Journal Articles
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Journal Articles
J Exp Biol (2000) 203 (2): 321–331.
Published: 15 January 2000
.... * Present address: Department of Biology, San Diego State University, San Diego, CA 92182, USA ‡ Author for correspondence (e-mail: lrome@mail.sas.upenn.edu ) 14 09 1999 22 12 1999 © 2000 by Company of Biologists 2000 muscle function fish swimming scup mechanical power...
Journal Articles
J Exp Biol (2000) 203 (2): 333–345.
Published: 15 January 2000
... by Company of Biologists 2000 muscle function scup Stenotomus chrysops mechanical power muscle mechanics work loop temperature effect The power that muscle generates depends on the length change and stimulation pattern that the muscle undergoes as well as its contractile properties...
Journal Articles
J Exp Biol (1999) 202 (1): 67–76.
Published: 1 January 1999
... Trade and Industry, 1–2 Namiki, Tsukuba, Ibaraki 305-8564, Japan 09 10 1998 07 12 1998 © 1999 by Company of Biologists 1999 avian moult aerodynamics flight mechanical power cost of transport manoeuvrability predation risk Moulting in birds is an energetically...
Journal Articles
J Exp Biol (1997) 200 (16): 2177–2188.
Published: 1 August 1997
... ©The Company of Biologists Limited 1997 biomechanics walking running mechanical work mechanical power lizard Coleonyx variegatus Eumeces skiltonianus A variety of legged animals, including mammals, birds and arthropods, use two basic patterns of locomotor mechanics...
Journal Articles
J Exp Biol (1996) 199 (12): 2767–2774.
Published: 1 December 1996
... to change the resonance mechanics of the thorax. In either case, offsets of this magnitude might have a small but significant effect on mechanical power output. In the green crab Carcinus maenas , the work output of the scaphognathite muscle drops by approximately 20 % when the mean oscillatory length...
Journal Articles
J Exp Biol (1993) 185 (1): 195–206.
Published: 1 December 1993
.../BF00238013 Huxley , A. F. and Simmons , R. M. ( 1971 ). Proposed mechanism of force generation in striated muscle . Nature 233 , 533 – 538 . 10.1038/233533a0 Josephson , R. K. ( 1985 ). Mechanical power output from striated muscle during cyclic contraction . J. exp...
Journal Articles
J Exp Biol (1993) 183 (1): 137–147.
Published: 1 October 1993
.... The mechanical power output during a cycle of movement was found by dividing work by the cycle duration. Note that this gives the average mechanical power during one complete cycle of movement, and that this is the net power calculated from the work done by the muscle fibres and any work that may have been done...
Journal Articles
J Exp Biol (1993) 182 (1): 207–227.
Published: 1 September 1993
... have used to estimate the cost of flight in a neotropical nectar-feeding bat Glossophaga soricina (Phyllostomidae), namely the use of kinematic and morphological data and aerodynamic theory to estimate the mechanical power requirements (power output) for hovering and horizontal forward flight. A hot...
Journal Articles
J Exp Biol (1991) 159 (1): 335–357.
Published: 1 September 1991
... or negative vertical force. Estimated effective angles of incidence (α T of the wings averaged 39° during the downstroke and −22° during the upstroke; spanwise variation in α T was greater than the average difference between half-strokes. Total mechanical power requirements of forward flight averaged 12.5 W...
Journal Articles
J Exp Biol (1991) 158 (1): 343–353.
Published: 1 July 1991
...N. A. Curtin; R. C. Woledge ABSTRACT Force and heat production were measured during isovelocity shortening of tetanized white myotomal muscle fibres from the dogfish at 12 °C. For each fibre preparation a range of velocities was used. Mechanical power was calculated from force x velocity...
Journal Articles
Journal Articles
J Exp Biol (1985) 117 (1): 357–368.
Published: 1 July 1985
.... Activating the muscles with brief, tetanizing bursts increases the duration of muscle activity and the mechanical power output per wing cycle above that obtainable with single twitch contractions of the muscle. The mechanical power output was determined for mesothoracic Tcxl muscles undergoing sinusoidal...